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[Articles Home]  [Add Article]  

Great Station Speaker

Michael S. Higgins (K6AER) on November 27, 2004
View comments about this article!


Very often, I have looked in various communication and ham magazines for what I would call a good Hi-Fi grade communication speaker. Several are offered in the $100 dollar range but generally they are large (12X8X8) in size and as always your desk console space is at a premium. The search continued for something smaller.

While eye surfing at the local Radio Shack store I came across a small book shelf speaker that was only $19.00. Made by RCA, the speaker is under model number PROX33AV, Radio Shack catalog number 40-5000. This eight ohm speaker is designed for 15 watts RMS, 30 watt peak audio and is more then ample for Amateur transceiver duty. The speaker has full rich sound and brings to life SSB and CW audio. I was amazed that an inexpensive book shelf speaker could sound this good. The speaker measures 4X4X6.5 inches and weighs about 2 lbs. Radio shack also has an omni wall mount accessory that attaches to the speaker and allows you to mount to any surface. This mounting accessory enabled me to save more valuable table top real estate and I mounted the speaker to an overhead book shelf.

Give these speakers try and I'll bet you'll be surprised.

Member Comments:
This article has expired. No more comments may be added.
 
Great Station Speaker  
by WA2JJH on November 27, 2004 Mail this to a friend!
Very true. Ever see the dinky speaker in a TS-850?
Wonder why all mil/commercial rigs have a front mounted speaker?

I do not like headphones. A good quality front mount speaker will sometimes allow the humans brain DSP to pick out the signal!
 
RE: Great Station Speaker  
by W7KKK on November 27, 2004 Mail this to a friend!
A number of years ago, I tried a computer speaker I had laying around and was going to throw away.
It worked great! I had many of them and just tried them all until I got what I wanted.
 
Great Station Speaker  
by G0GQK on November 27, 2004 Mail this to a friend!
May I suggest that you buy two speakers, wire them up with one speaker plug and place them at the side or at the rear of your tranceiver about three or four feet apart and you will be amazed, nay, astonished, by the sound quality.

73, Mel
 
RE: Great Station Speaker  
by WA4DOU on November 27, 2004 Mail this to a friend!
You knew someone would say this! I almost never use a speaker, preferring headphones.
 
RE: Great Station Speaker  
by KG4RUL on November 27, 2004 Mail this to a friend!
Great minds think alike. I have been using a similar RS speaker for several years. In virtually all cases, the internal speakers of modern radios are woefully inadequate.

Dennis / KG4RUL
 
RE: Great Station Speaker  
by KC0KBH on November 27, 2004 Mail this to a friend!
I use some old CTX amplified computer speakers, and they sound great! I can hear signals I can't hear with the internal speaker on my IC-765.
 
Great Station Speaker  
by N4ZOU on November 27, 2004 Mail this to a friend!
I found a nice PA type speaker at Radio Shack on clearance (it's not a cell phone), which is just an 8-inch speaker in a very nice wall-mount enclosure that has outstanding audio reproduction properties, which is hanging on the wall right behind my transceiver so no desk space is taken at all. Sweet!
 
RE: Great Station Speaker  
by KF4VGX on November 27, 2004 Mail this to a friend!
Being hard of hearing with hearing only in my left ear with half an ear drum for previous operations. I can appreciate the topic. there are a lot of hams that are hard of hearing that go through the toughest times finding a quality speaker.

Took several trips to electronic stores to find a headset with just the right audio quality that would work for me, never did find one. Found an old set of
Koss K/6alc from a local hamfest that turned out to be the thing for my HF Rig!

You would be surprised the difference it makes.


KF4VGX
 
Great Station Speaker  
by W4MGY on November 27, 2004 Mail this to a friend!
I use an old pair of RS Minimus Pro-7 speakers in the shack at the receiver desk, and a Optimus 7 at my HF operating position. All of them sound great, take up little room, and easily driven by the typical 1-3 watt output on most modern gear.
 
Great Station Speaker  
by K0RFD on November 27, 2004 Mail this to a friend!
computer speakers and a homemade 1/8" male mono to 1/8" female stereo adapter here...
 
RE: Great Station Speaker  
by N9AS on November 27, 2004 Mail this to a friend!
I use the Quincy Jones Speaker. Nothing like it. I believe they are made in Mo.

Fairly new design.

73,

N9AS
 
RE: Great Station Speaker  
by N9AS on November 27, 2004 Mail this to a friend!
I use the Quincy Jones Speaker. Nothing like it. I believe they are made in Mo.

Fairly new design.

73,

N9AS
 
RE: Great Station Speaker  
by N9AS on November 27, 2004 Mail this to a friend!
FYI ...update ... on the SLS speakers....

While they may not be the ultimate speaker they do reproduce better than any other speaker I've found.

The key element in the design of their loudspeakers is their new Push Pull Neodymium Ribbon Driver Technology. These ribbons combined with their proprietary wave guides, woofers, and cabinet designs create loudspeakers with world-class performance. They've developed a way to manufacture loudspeaker drivers with new materials and are able to achieve extremely high output levels with fast transient response and ultra low distortion.

Their high frequency ribbon drivers are capable of producing accurate sound over a wider dynamic range. These design considerations result in loudspeakers that are capable of unprecedented high sound levels with much less listener fatigue.

Unfortunately the HF rigs of today don't fancy such high audio reproduction and therefore don't fully use SLS speakers features.

I would almost bet that Bob Heil is going to work out a system with them in the future.

73,

art N9AS
 
Great Station Speaker  
by WB9YCJ on November 27, 2004 Mail this to a friend!
These speaker suggestions are good. I also use my receiver's (transceiver's) low level "line out" and feed the receive audio to a Graphic Equalizer. Manipulating an EQ can make Ham, SWL and Medium wave station I.D. much easier at times! Try it.
 
RE: Great Station Speaker  
by KO6UJ on November 27, 2004 Mail this to a friend!
Actually, years ago, Radio Shack made a "communications speaker" in a black wood cabinet. The speaker was "shielded" from RF and tuned for 300-3000Hz, which is perfect for HF, etc. I bought two of them and used a Y-connector to run them from the single output of the rig. Perfect. The small footprints delivered a stereo/monoaural sound without taking up much space.

High fidelity speakers are not that good for HF, because they reproduce noise that does not contain intelligence and therefore not needed. So, save the Klipsch for the stereo systems and not in the ham shack.

73
Guy
 
RE: Great Station Speaker  
by VE7VJ on November 27, 2004 Mail this to a friend!
I was lucky enough to find two old PYE radio speakers. Whatever they did back then, they did it right.

 
Great Station Speaker  
by N9WB on November 28, 2004 Mail this to a friend!
I found those DuKane 8-inch speakers that are in the ceilings of stores and restaurants make great radio speakers. They have to be in a baffle of some kind. I disconnect the 70 volt transformer and connect the receiver directly to the speaker terminals.

Vy 73, Walt N9WB
 
Great Station Speaker  
by W2NSF on November 28, 2004 Mail this to a friend!
Yep. I got that very same speaker over a year ago and now I can't operate w/o it. Only thing better is headphones when the QRM gets bad.
 
Great Station Speaker  
by KA7GKN on November 28, 2004 Mail this to a friend!
As long as others are tossing in speaker suggestions here goes:

Behringer Momitor 1-C speakers
they are approximatley 8 7/8 x 5 7/8 x 5 9/16
look great and best of all $39.99 a pair
[retail 49.99] you can buy a pair and share with a friend.

www.behringer.com

see their website for more info and photos

I too often use headphones Sony MDR-v600 series
they are like the MDR v7506...excellent!
I monitor my transmit audio, I like the headphone sound. When you monitor your transmit audio you find yourself speaking slower, clearer, no shouting into the mic, sometimes use better grammer, and often think before you say something


ka7gkn


 
Great Station Speaker  
by K1CJS on November 28, 2004 Mail this to a friend!
I took a clue from the public service vehicles that I sometimes service and looked for the Motorola speakers that used to be (and still are, in some instances) used in some of those vehicles. Those speakers are supposedly made to enhance voice communications, and do work much better than the internal speakers in most instances.

I have one for each of the rigs in my mobile installation and also for the rigs in my shack. They can be gotten for a few dollars at most hamfests, swapmeets, and electronics fleamarkets.

In truth, almost any speaker which is used in place of the internal speakers on most rigs sound better. Even some of the front mounted speakers on the newer rigs leave much to be desired.

The old rigs made with separate speaker housings or even those with the speakers housed in the power supply for the rig was the right idea. If it wasn't for everybody wanting convenience and easy set-up, maybe those older, better ideas wouldn't have been abandoned.

Just my .02. 73!
 
Great Station Speaker  
by WB0AXN on November 28, 2004 Mail this to a friend!
Why not do what I did a long time ago.....go to any auto salvage yard and pick up several high quality speakers from junked autos! Everyone knows how good the sound is in autos, right??
Chances are, you can get the speakers for nothing if they will let you retrieve them youself. I did pay for a pair of nice ones one time when I was in a hurry and paid $5 for the pair. I even got a fantastic radio from a junk car that was six months old, for $45. The same radio a car dealer charges several hundred for!
 
Great Station Speaker  
by K6ILG on November 28, 2004 Mail this to a friend!
I Too Have A Hearing Problem And The Two Speaker System Works Well. Nobody Mentioned The External Speakers like Kenwood, Yaesu, Icom, Well I Found That Two Yaesu SP-6 Speakers With The Bonus Of Mounting A Timewave 59Y Works Well For Me. This Is Only Good If You Have The Space .
 
Great Station Speaker tip.  
by W8KQE on November 28, 2004 Mail this to a friend!
Excellent tip! There are many inexpensive small 2-way audio speakers that blow away the often compromised audio quality emanating from your rig's speaker, or even an external, more expensive ham speaker, like the Icom SP-21, for example. Just like a good audiophile speaker gives you better 'resolving power' to ferret out more detail and 'air' in the music, one can also extract more detail and better audio and tone quality on voice and CW with such a speaker. Just make sure the impedance is a match, or close to it. Taking this to extremes, I know a Ham who hooked up his HF rig to a small integrated amp driving a 'Magneplanar' model MMG (audiophile planar speaker)!!! You have to hear it to believe it!
 
Great Station Speaker  
by WL7CMG on November 28, 2004 Mail this to a friend!
Don't forget to nab the speaker out of that old TV with the blown picture tube before you take it to the dump. They can be fantastic speakers to listen to also. I also agree with using the "low level" line out of the back of the rig into an old stereo head, (mine's an old Pioneer), Then you can do just about anything you want to with your rx audio. 73s...!!!
 
Great Station Speaker  
by N5IHS on November 28, 2004 Mail this to a friend!
Several of the folks commenting have mentioned solutions for those of us that have some hearing disability due to one cause or another. I have found the MFJ-616 Speech Inteligibility Enhancer to be very usefull for me with either headpnones or speakers. Being able to boost or retard selected frequencies in the audio spectrum is useful. The device is a bit pricey, but then most things that work are!
 
RE: Great Station Speaker  
by N6AJR on November 28, 2004 Mail this to a friend!
I use those old stereo speakers left over from old broken stereos sets. I have several, one for each radio, you know the type about a foot tall 8 inches wide and 3 or 4 inches deep, with phoney wood grain over particle board.


these do a couple of things, the naturally drop off some of the high freq hiss from the signal, and the put the sound foward instead of up or down . I too have substantial hearing loss and these do the best job for me, and can be founs at garage sales for a couple bucks.. better than a 2 inch speaker in the rig pointing away from my ears.. YMMV
 
RE: Great Station Speaker  
by N6AJR on November 28, 2004 Mail this to a friend!
I use those old stereo speakers left over from old broken stereos sets. I have several, one for each radio, you know the type about a foot tall 8 inches wide and 3 or 4 inches deep, with phoney wood grain over particle board.


these do a couple of things, the naturally drop off some of the high freq hiss from the signal, and the put the sound foward instead of up or down . I too have substantial hearing loss and these do the best job for me, and can be founs at garage sales for a couple bucks.. better than a 2 inch speaker in the rig pointing away from my ears.. YMMV
 
RE: Great Station Speaker  
by N6AJR on November 28, 2004 Mail this to a friend!
what happend to my spell checker??
 
RE: Great Station Speaker  
by DROLLTROLL on November 28, 2004 Mail this to a friend!
I use a 70 volt audio line transformer with the 8 ohm winding attached to a mono plug and the 70 volt side attached to 2 alligator clips. Clip those onto your earlobes and I guarantee you'll hear the audio like never before! :-(
 
Great Station Speaker  
by W6PMR3 on November 28, 2004 Mail this to a friend!
I've been using line level out on my rigs to a Marantz 2270, a 70's vintage reciever with great audio
and an EQ through the tape monitor position. I then go out to a pair of Polk monitors mounted about a foot away from the edges of my station desk. Great audio at a low price. The EQ is set to bring up the
"Communication" quality by bringing up the midrange a bit and cutting out the extreme highs and lows.
The fellow who said leave the HI-FI speakers out of the Ham shack could not be more wrong! I have been using HI-FI in the shack for years and the sound
is great. Paul.
 
RE: Great Station Speaker  
by KO6UJ on November 28, 2004 Mail this to a friend!
I'm the fellow, who said that high-fidelity is not good for HF.

Why? Because human voice frequencies are what we are trying to reproduce when listening to HF phone, which are from 300-3000Hz. Hi-Fi speakers do an excellent job above and below that range. Why? Because that's what they are designed to do, i.e. reproduce a fuller spectrum of sound. That's exactly opposite to the concept of a communication speaker, which is trying to "contain" a select audio spectrum.

If you are listening for human voice, then above and below the 300-3000Hz range is simply noise. Ever wonder why communication speakers from Collins had a 300-3000Hz spec? I did back in 1969 and asked them, when I lived near the Newport Beach, CA area. That was before Collins Radio was acquired for their avionics division by Rockwell. Shame that . . .

If one is listening for audible frequencies above or below the human voice, then higher fidelity speakers is definitely what the doctor ordered.

I'm a relative newbie (38 yrs) to ham radio. I've only been in the hobby since 1966 at age, 15. Communication speakers, including the Motorola variety that we used with the GE and Zenith heads for VHF back in the 70's, were optimized with an LC circuit to only allow a 300-3000Hz passband. Hmm, maybe that's why they sounded great for communications? Plus, they were shielded for RF.

Again, it depends on the use. If it's for frequencies above or below 300-3000Hz, then running HF audio throught high-fidelity speakers is a great idea. Otherwise, one is simply adding noise without intelligence.

I hope this helps explain my earlier comment. It not a matter of wrong or right. It's about intended use . . . again, for phone ops, use a passband of 300-3000Hz. For high-fidelity Voice Of America, VOA, transmissions (is that possible on HF?) use Apogee or Magnepan speakers with Krell monoblock amps.

A communication speaker passband is a concept worked well for 40 years plus, and . . . it's not my idea . . . it's Motorola's followed by Collins Radio, but hey what did they know, because the Japanese radios kicked their collective butts. :-)

Oh well . . . this is only a hobby. First understand the physics involved, then pay it no attention add that parametric equalizer and turn the bass and treble controls all the way up . . . Woodstock revisited on HF . . . as long as you are having fun.

;-)

73
Guy
 
Great Station Speaker  
by N9WB on November 29, 2004 Mail this to a friend!
I find the best bargains on old stereo and jam box speakers as well as other items around here on Tuesday evenings around 10 PM to midnight. Be sure to use your emergency flashers while stopped along the curb on a busy street so you donít get rear-ended. I take along some rags so I can remove dirt and garbage from the items before placing them into the car. Sometimes I also find a few things early on Wednesday mornings just before the truck arrives.

Dumpsters at apartment buildings are also a very good source of goodies. Apartment dwellers do not have a lot of storage space and get rid of a lot of really good things. If you can find somebody who is moving out, they are often willing to part with a lot of good things.

When my wife and I first got married, she told me she wanted to go to Wall Mart and get a floor lamp for our home. Fortunately it was Tuesday night. We found just what she wanted before we got to Wall Mart, and I saved $17.00!

Vy 73, Walt N9WB
 
RE: Great Station Speaker  
by K5UJ on November 29, 2004 Mail this to a friend!
<<<If you are listening for human voice, then above and below the 300-3000Hz range is simply noise.>>>

Ahh, not exactly. Just about all consonant information is above 3 khz. The S sound that makes the pronunciation of the letter s sound like an s is all above 3 KHz. For example, if you say the word "test" with your audio cut off at 3 khz, it will wind up sounding like "tet" (Tet offensive?). A lousy example but you get what I mean. It is really desirable to have some more high frequency audio in there, at least another 1000 hz or so, to help include the consonant sounds. Below 300 hz, what you get is a low end sound that many hams find adds a pleasing tone of warmth to the audio. The low end isn't particularly necessary, and if overdone, can waste tx energy and make copy difficult, but a station with full balanced audio can be great to copy in a ragchew qso. Instead of using a speaker that removes the option of a wider response alltogether, it makes more sense to do your frequency response limiting in the rig with IF filters (or DSP in the newer transceivers) and use a speaker that handles the highs and lows if you ever want to hear them.
 
RE: Great Station Speaker  
by K3UOD on November 29, 2004 Mail this to a friend!
A 440 Hz note played on a piano sounds way different from a 440 Hz note played on a guitar. The quality that gives each instrument it's characteristic sound is called timbre. Timbre is dependent on the harmonic content of the wave form.

Quality music speakers have a response far above the range of human hearing because the reproduction of the harmonics, which can be way above hearing range, is necessary to preserve the timbre of the instruments.

Likewise, the harmonic content of the human voice is what gives each of us a distinctive sound. A communications speaker does not have to reach as high or as low as a stereo speaker; however, it does have to go above 3000 Hz if you want a natural sound.
 
Great Station Speaker  
by AG8A on November 29, 2004 Mail this to a friend!
I use the Radio Shack speaker and found it to work well. As we talk about the different speakers and what we use, I see that Bob Heil is going into production on the Clear Speech Speaker. This is not a cheap buy being priced at $210 but what is interesting is some of the things he found wrong with the old speaker manufactoring parts. You can find this at his web site: http://www.heilsound.com/amateur/clear_speech_speaker.htm

Look at the new products pull down for his improvements and what he found wrong in the old production such as the poor quality speaker that was being used.

Just a final hint on testing old speakers for polarity.

Take a double AA battery and solder wires to the + and - terminals. place a wire on both speaker connections and watch to see what way the speaker cone moves upon connection. Out = the right hookup.

Randy
AG8A
 
RE: Great Station Speaker  
by KC8VWM on November 29, 2004 Mail this to a friend!

$210 for a speaker?

I like my radio to reproduce the old "BBC radio sound" coming from my radio speaker.

I have played around and modified various speakers including hifi shelf speakers, computer speakers etc., but they could not give me the clarity or frequency response I was looking for.

To achieve that "big" sound I was looking for while maintaining intelligent radio frequency response I finally decided that the speaker should be in a large "box" similar to older floor model SW radio designs.

I finally settled on a design model as my shack communication speaker.

The speaker was rated at 90 - 20,000 hz. I modified the horns with the installation of a variable resistor to tune and minimize "white" noise.

The variable resitor tuning practically eliminates noise from the higher frequencies on your HF rig while giving you a rich lower end sound.

The speaker system is the "cheap" and "miniturized" boombox variety made by "Roadmaster."
It cost me $15.00 at "Family Dollar." It actually sucks as a car stereo speaker, but it does sound great on radio gear.

Here is a photo of what the "communications speaker" looks like: (The "unusual" metal speaker grills even looks like they belong to a piece of radio gear if you ask me...)

http://i14.ebayimg.com/02/i/02/b1/15/5a_1_b.JPG

If you mount the speaker "upside down" on a shelf, or a wall in your shack, it will direct the sound down toward you, the listener.

The wooden "box" frame makes all the difference and everyone on the air now sounds like they are a broadcast station instead of a plastic, squeaky, noisy tinder box sounding station.

73

Charles -KC8VWM
 
RE: Great Station Speaker  
by W6TH on November 29, 2004 Mail this to a friend!



I wanted the best and took this route:

Using the Heathkit A-9C mono High Fi amplifier driving a pair of University model 6200 speakers. Have 20 watts of audio that will rattle your brains.

I can hear cw as it should be, loud and clear.

.: 73 from the dot and dash scientist.

 
Great Station Speaker  
by WA2FAA on November 29, 2004 Mail this to a friend!
Guess I'll put my thoughts out. I am working with a Cambridge Soundworks 3 piece speaker system. Cost $40. Sounds fabulous with 3.5 inch fronts, and an amplified 5 inch sub. So if you listen from 100 to 3K, you would really like this setup. Fellow hams have been blown away with the receive audio from the Icom. Need any info, drop a note.
 
RE: Great Station Speaker  
by K1YDA on November 29, 2004 Mail this to a friend!
Get a Parts Experess catalog go thru the drivers (and there are many) and pick the size with the freq response you want, then build a little box for it. 4 to six inches seems to be about the best to cover the communications passband. The more expensive drivers introduce much less distortion than
the kind of cheap sutff usually found in the communications market. I have akways been amazed at the total lack of attention paid by communications radio engineers to enclosure design --and then jam the power supply in there for good measure--and the price people will pay for a box with a 50 cent speaker which matches their radio box.
 
Great Station Speaker  
by WA2JJH on November 29, 2004 Mail this to a friend!
Strange but true. Open up any new rig. You will see a speaker that is placed in an acousticly bad position.

The very worst is the top of the radio. Yet that is where most internal speakers are.

A nice 3" or larger 4-8 ohm replacement speaker that is facing you, will achieve much more than some DSP!

Your left side of the brain is where speech is processed. A speaker right near your ear will have the brain do all the DSP tricks!
 
Great Station Speaker  
by KC0NPF on November 30, 2004 Mail this to a friend!
Hey, how about a decent pair of bookshelf speakers (bestbuy? $20) that are on my desk anyway, I use them for music mostly. My 12 band EQ has a couple switched inputs, oh here we go, a 100 ohm resisitor from the headphone output (which actually can put out the full speaker level, not good without an attenuator of some sort) straight into the EQ. Sure only 4 out of the 12 sliders have any effect because of the narrow bandwidth, but who cares. Now I've got both speakers cooking, with a little EQ to help me out, and I can pull out lots of weak stuff... maybe a better antenna... more weak stuff

KC0NPF
 
RE: Great Station Speaker  
by ZL2LD on December 1, 2004 Mail this to a friend!
I've tried many different speakers and have recently hit on the best setup I have heard yet. I visited a local stereo shop and looked at all the offerings and finally chose a micro stereo system (JVC in my case but there were plenty to choose from - must have aux input). It is all black, speakers are small (about 8" tall)but solid and the amplifier has no audible hiss or hum. I adjusted the tone controls to cut out most of the bass and some of the treble. I have one speaker each side of my Icom 756 Pro II and it sounds incredible. (and looks great too!) Forget computer speakers they are mostly tinny sounding and the amp in rigs will not drive a decent speaker without distorting badly. I'm coming out the speaker output into the aux input of the amp and have joined both stereo inputs together for mono. Of course I'll probably never play a CD or tape on the unit but at the price (about US$90) who cares - its cheaper than custom "ham radio" speakers and sounds far better. I actually think that having the two speakers each side of the radio has helped with clarity. The real proof is that I'm finding far less need to grab my headphones now when conditions are really bad.
 
RE: Great Station Speaker  
by N0TONE on December 1, 2004 Mail this to a friend!
I built a couple of MTM variations of the old Rogers LS3/5A. Flat response from 110Hz to about 25kHz, and added some passive EQ in it. They're arguably a whole lot higher fidelity than anything to be found in an RS store, ever. I use them if I'm working in the shack, and only idly listening to the radio.

However, when it's time to really hear that QSO, and know that I will hear the BAND and not the "band as modified by room acoustics", then it's time for the headphones. Even el cheapo headphones are superior for intelligibility than the best speakers.

When I hear someone arguing about "who needs these fancy high performance radios", I ask "what kind of headphones are you using?". If he says, "I use a speaker", then I know exactly why he can't tell the difference between a Heathkit and a modern rig.

AM
 
Great Station Speaker  
by WA8MEA on December 1, 2004 Mail this to a friend!
Here's another idea: Go to your local drive-in theater, put a speaker in both the driver's side AND passenger side windows. Now when the movie's over, just accidently forget to put the speakers back on the poles and drive off! You've inherited a pair of high fidelity ham speakers!

Next time, I'll tell you how to put chains around the rear axle of a cop car, so when the cops take off on a call....they'll leave the rear wheels behind 'em!

73, Ron "Richie Cunningham" Howard
 
Great Station Speaker  
by N9GQR on December 3, 2004 Mail this to a friend!
I was in Radio Shack today. These speakers are normally $29.95 and are on a CLOSEOUT at $19.95....If you want to purchase them you best hurry. I picked up the last two at my Radio Shack store.
 
RE: Great Station Speaker  
by KC8VWM on December 3, 2004 Mail this to a friend!
Just a thought for mobile operation. Why not hook up your mobile rig to your car stereo AUX input for that high quality amateur radio mobile experience.

I have also used the cassette tape adapter sold for portable MP3 players and connected it to my mobile speaker output jack. What a difference!

(I only need to find a way to keep my darn wife from ejecting the tape in the middle of a QSO... )

73

Charles - KC8VWM


 
Great Station Speaker  
by W2UIS on December 4, 2004 Mail this to a friend!
Purchased one of these RCA speakers at Radio Shack yesterday. Plugged it into my Kenwood TS130S and the sound is great. Thanks for the tip.
 
RE: Great Station Speaker  
by KE5CYB on December 4, 2004 Mail this to a friend!
I still use my first SWL Radio Shack speaker from 1967. Is is a SP-150, that matches my DX150A and still sounds great.
 
Great Station Speaker  
by K4IQT on December 5, 2004 Mail this to a friend!
I've used a pair of Radio Shack bookshelf speakers for that purpose off and on for about fifteen years now. There is no compromise to communications quality audio if your rig has decent passband control, too.

A prime source for speakers, etc., for free is a local TV repair shop, although this is a vanishing breed of service provider in many locales. Free is good.
 
RE: Great Station Speaker  
by KG4IHJ on December 5, 2004 Mail this to a friend!
After spending almost 6 years studying music/acoustics/sound reinforcement, I can easily say that the design of ham rigs lacks one important thing which would make a speaker produce an adequate sound: a suitable enclosure. The fact is that pretty much all rig manufacturers are trying to produce SMALLER footprint rigs, which is the opposite of what you would need for adequate sound -Not that I would want a 60" tall by 60" wide rig sitting on my desktop. The equivalent is like trying to listen to music through the PC speaker (the one inside your case, not the pair that came with it). Ever see one of those? It's like 2" in diameter and usually has no enclosure. The enclosure must be large enough to allow the speaker to reproduce the correct audio frequencies, which in ham radio is mostly the mid range freqs. The enclosure of a speaker is like the antenna in your transmission setup. If you don't give the antenna something to push off of, like a good ground, you probably won't get out of your back yard. Or if the antenna is tuned for a different band, forget about getting out, and get your credit card ready to buy a new set of finals. You won't have to buy a new set of speakers if you don't tune the enclosure, but you will see a degradation in the reproduction of the frequency response.

Simply using a decent pair of computer speakers will give a marked improvement. If you have a pair of big speakers (you know the ones they were producing in the 80's and 90's for stereo systems), hook them up and see how that sounds, you'll be surprised how much more is there without changing anything else on your setup. The moral of this is that the RS speakers are a great improvement over the built-in "PC speaker" that comes in most rigs. I've tried one and I'm impressed in the overall performance in such a small footprint.
 
RE: Great Station Speaker  
by KO6UJ on December 5, 2004 Mail this to a friend!
K5UJ

Sorry, old man. . . .

"<<<If you are listening for human voice, then above and below the 300-3000Hz range is simply noise.>>>

<<<Ahh, not exactly. Just about all consonant information is above 3 khz.>>>"

Again, it was not my passband. You are taking issue with Collins and Motorola, not me. I have this to ask you though. Where the hell were you, when Collins went out of business. They could have used people like you.

Again . . . 300Hz to 3000Hz was the magic passband. Again, not my idea. Sorry . . . .
 
Great Station Speaker  
by KC2GDS on December 6, 2004 Mail this to a friend!
Hello All,

I have been buying the Radio Shack "close out" speakers for years. They seem to have the sale at least once a year. I aggree - you can't beat the value.

I also enjoy short wave listening, so, the extra audio response is nice to have.

Now for another improvement, I picked up an automotive equalizer/amplifier off of a clearance table at Radio Shack. I have seen them at hamfests also. I wire the left and right stereo inputs together to make one input to accept the speaker output of the radio. Then the front and rear left outputs are wired together to make one left output, and same is done for the right output. You can now drive two of the speakers with plenty of output (room filling audio), and the equalizer gives you some control of the tone. Great for listening to AM SW. Running the 1000Hz control down seems to get rid of most of the atmospheric hiss (red neck DSP?)

A ploblem I ran into is that with all of the loose wiring behind the unit, it picks up RF on transmit. But, this does not affect the signal transmitted. A nice way to clean it up would be to open the lid on the amp/eq, and do all of the wiring inside the box, and have it terminated into RCA jacks on the back of the unit. Then, use shielded RCA plug audio wire for running the signal wiring, and, attach the amp/eq cover to the station ground.

73, KC2GDS
Len S
 
Great Station Speaker  
by KC2GDS on December 6, 2004 Mail this to a friend!
Buy the Way,,

These speakers are apparently glued together from the front. However, the terminal strip on the back is attached with screws. I have opened this up, drilled a hole in the back of the speaker, and then you can wire up a phono or RCA jack. Makes for a clean and RF tight conection. Much easier than trying to use the spring clips for attaching wires.

The metal is pretty thick, you may have to "step drill" the hole. First, drill the hole with a drill the proper size for the jack. Then, use about a 3/8" or 1/2" drill, on slow speed, to auger half the thickness of the back. Then, you should be able to install even small jacks.

73, KC2GDS
Len S
 
RE: Great Station Speaker  
by KL7PB on December 6, 2004 Mail this to a friend!
I bought the RCA Radshak speaker after reading the review in eham.net a couple years ago. It is exc but with my
built in Jupiter speaker it's a draw so using it on other gear. Freq response seems to be different on all radios. The Kenwood 850 loved it. My favorite scanner the RadShak
2006 likes an old used computer speaker best.
 
Great Station Speaker  
by WA2DYA on December 6, 2004 Mail this to a friend!
SSB is anything but but Hi-Fi audio. The best communications speaker I have came from an old Bell Telephone Speakerphone. I bought it for $3 at some hamfest. Best - no ifs ands or buts! Hi, Hi

--- CHAS

 
Great Station Speaker  
by KG6R on December 7, 2004 Mail this to a friend!
Michael ---

I took your advice and bought the speaker. The sound quality is much better than my internal speaker.

Thanks again and 73,

Jim
 
RE: Great Station Speaker  
by K5OFR on December 7, 2004 Mail this to a friend!
Regards the 300 - 3000 pass band, what is the pass band of your transmitter? The older communication rigs, and my old rigs, had a limited audio range to match the limited audio range of the communication speakers. Are these new rigs putting out hi-fi audio or are you using some speach compression? I am deaf in one ear (totally) and very hard of hearing in the other (60 to 80 db loss over the range of 200 to 16,000) so I am going RTTY. I will disconnect the rig speaker as soon as I get the hookup working. In the meantime I am using my Boston sound set with the computer. The audio from the rig is going into the computer sound card.
 
Great Station Speaker  
by N7OO on December 7, 2004 Mail this to a friend!
Review the "High Quality Speaker System" article in the October 2004 QST. Gives plans on a dual amateur/SWL speaker enclosure. Speaker systems are one of the vanishing few projects we can home brew and this article provides links to software that can be fiddled with to customize components and enclosures you may have already in hand.

73 de Jack - N7OO

 
Great Station Speaker  
by W1GFH on December 7, 2004 Mail this to a friend!
This is real hi fi!

http://www.virhistory.com/ham/spkrs/sx28a-R12Speaker.JPG
 
Great Station Speaker  
by VE3MIX on December 10, 2004 Mail this to a friend!
I bought two of the RCA's. I tried one on the IC-V8000 and it does sound great. One thing I might do is plug the bass port on the rear with some foam rubber to reduce the bass response and keep dust out.
 
Great Station Speaker  
by WD9FUM on December 27, 2004 Mail this to a friend!
The old Motorola speakers are the greatest thing since sliced bread.
 
RE: Great Station Speaker  
by K3UOD on January 24, 2005 Mail this to a friend!
WD9FUM - Agree. I use an old Motorola speaker in my mobile.

On another note...I have a Yaesu MK V Field. The built-in speaker is surprisingly good. I also have the matching SP-8 speaker with built-in filters and LL-7 Phone patch. I found that the unmodified speaker was only a slight improvement over the internal speaker until I bought some fiberglass insulation (Home Depot sells a small bag of it) and boxed in the back of the speaker with fiberglass and "Wow! What a difference". The built in filters work pretty well also.
 
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