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Reviews Categories | Speakers for communications use | Alpha Delta VRC Help

Reviews Summary for Alpha Delta VRC
Alpha Delta VRC Reviews: 10 Average rating: 3.2/5 MSRP: $250.00
Description: Station speaker and Audio Response tailoring circuitry.
Product is in production.
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DXACE1 Rating: 5/5 Feb 6, 2015 11:30 Send this review to a friend
Fantastic Audio Tool  Time owned: more than 12 months
The VRC is one heck of a audio tool -- if you can obtain one on the used market, by all means give it a try, though make sure it does not suffer from aging components or is beyond a cleaning of the switches/buttons. I have two of these and it makes listening to SW (what remains of it) a pleasure.
WR1H Rating: 5/5 Feb 24, 2006 10:23 Send this review to a friend
This is an excellent device  Time owned: more than 12 months
I have owned and used several of these units.

Don't listen to the people below.

This device works and works well. Its a magnitude better than any built in speaker and the filters work very well.

It will not work as an IF nor can it. Most people think that this device will magically "pull in" signals from the noise.

It will not, nor was it designed to that.

It is a good speaker and cabinet, with a good sound and can be augmented to the listeners prefference.

I highly recomend it.

G4OFV Rating: 5/5 May 21, 2004 14:58 Send this review to a friend
Excellent peak filter for CW use.  Time owned: 6 to 12 months
Model VRC

Well what can I say brought one of these from a boot fair for $40 in very very good condition and yep the power switch didnít work.

Iím a CW buff and cant say how good this box is for pulling the signals out of the noise using the peak filter absolutely blinding, also the manual notch is topís.

I running this from a 756p2 which have excellent filters by itís self but when I hear a CW signal deep down in the noise and I use the peak filter it just pulls the signal out of the box, it booms out with no ringing compared to so many other analog filters Iíve tried.

Even the high frequency cut off as you turn it back it has no ringing like other filters Iíve compared against, two other filterís I have at the moment the Datong FL1 & FL3 and this box wins hands down for CW & SSB use, ok it has no auto notch but cant have every thing and you cant use auto notch on CW anyway, but Iím thinking of putting the auto notch from the FL3 into this box for SSB.

I havenít compared this against newer DSP boxís as havenít had the privilege to try but for this sort of price $40 I canít complain.

Goods points

Excellent peak filter without ringing.

Good internal speaker sound compared to couple of other branded speaker boxís I have.

Now the down sides

Looks butt ugly.

No external Speaker socket.

Quit big so stands out against most rigs.

Small speaker audio level pot adjustment, would have liked a control knob the same size as the other controls as you always going back and forth between the rig volume and the box.

Power switch duff


If youíre into CW and need a peak filter this is great, also sounds good as a stand-alone speaker which can be tailored to your listing preferences, unlike a lot of these passive speaker boxís you see around.

I havenít looked inside yet but might be tempted in putting the guts into a smaller box and using it with my favorite speaker.

Bottom line is I like using it a lot and is in line all the time.

KK7WN Rating: 4/5 Aug 29, 2003 13:58 Send this review to a friend
Good performance  Time owned: more than 12 months
I have tested audio equipment for many years. In my estimation this unit is at least the equal of, if not much better than, the speakers containing filters maketed by Kenwood,Yaesu, etc. It was not designed as a noise reduction unit and should not be evaluated as such. It does however provide superior sound reproduction given the quality of the audio input.Unfortunately a few earlier reviewers seemed to miss these points.Teamed up with a good outboard DSP unit this device works extremely well. The principal drawback was its too high new price. However, at a used price below ,say $100, it is a very good value.
W7UIV Rating: 4/5 Jan 10, 2003 02:39 Send this review to a friend
I'm happy  Time owned: 0 to 3 months
When I saw one of these used on eham I jumped over here to read up on it. Not too good but I decided to give it a shot anyway, and since being an old audio buff I figured if they work as bad as some reviews indicate maybe I could fix it. Descriptions are typical of indicating an impedance mismatch or overdriving the input.

At first I thought "oh oh" when I tried the easy way of plugging it into the front phones jack on the rig, and it was just exactly as horrible as described in some reviews here.

Then I decided to drive it with the speaker output, and lo, it came to life. No distortion and no tinny sig anymore. Peak, Notch, Hi and Lo cut controls all work. The peak is smooth and not so deep as to cause ringing. Notch is good too. I don't expect an audio filter to do everything anyway. When it comes to audio filters I just like a little added bias in the direction I'm after. Let the I.F. filters do the real work.

It works fine. Just what I wanted.

K1ZYW Rating: 4/5 Apr 6, 2002 20:50 Send this review to a friend
I LIKE IT  Time owned: more than 12 months
The reviews have all been poor but I beg to differ.

I have had this speaker for several years. The notch and peak filters work very well - are variable from very broad to very sharp. The switch for these filters, however, is low quality mechanically.

The other filters work well too.

The audio quality is fair but for communications (especially CW) I can pull 'em out of the mud. The 'cans' plug in the front and use all the benefits of the filters.

On balance it does just what I needed.

N4LQ Rating: 1/5 Jan 25, 2002 14:12 Send this review to a friend
Don't bother  Time owned: 0 to 3 months
What a waste! I sent mine back. The cabinet resonated at cw frequencies...buzzzzz. For cw get an MFJ-281 ClearTone or mil LS-166.
W7RTY Rating: 0/5 Jun 28, 2001 14:31 Send this review to a friend
What an insult!  Time owned: 0 to 3 months
I played with my new Alpha Delta VRC for a day and found it to be an insult to my ears. If you try to increase the volume, your signal just gets distorted. Alpha Delta, please take this product off the market. It is junk. would make a great boat anchor, but the price would have to come down just a little! Radio Shack speakers work great....(RCA Pro x33, x44, x55 and the x88 mini speakers). Anything would be better than the VRC.
K7FD Rating: 1/5 Jul 10, 2000 17:30 Send this review to a friend
Think Twice about this one...  Time owned: 6 to 12 months
After a year of fiddlin' with the speaker, I can say without hesitation it is probably the worst accessory speaker I have owned in 34 years of hamming. Save yourself some dollars and go to Radio Shack and pick up a better sounding stereo speaker. The VRC is easily overdriven and produces distortion at the drop of a hat. The power switch works 50% of the time after one years use...

Plus the aluminum cast enclosure looks like it was machined in someones basement; definitely hokie looking.

N5CQ Rating: 3/5 Sep 21, 1999 06:25 Send this review to a friend
Very Useful  Time owned: unknown months
A very good speaker console, with useful audio filtering. Much better than internal transceiver speakers. Very good for casual listening in the shack while you are doing something else, and the only speaker I have found acceptable for copying CW. Audio filter in "peak" mode gives effect like an old Drake Q multiplier, and gives real improvement even with "modern" DSP radios. In listening to the lidfest on 3C0R on 14025 I could discriminate between the DX and all but the exact zero beat signals tansmitting on top of him. Solidly built, but a little pricey for what you get.

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