Archer Mini Amplifier

Glenn E. Herman

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Jul 28, 2001, 3:30:25 PM7/28/01

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Any of you guys remember the small grey archer amps? I remember using
mine with the first TRS 80 Model One voice synthesizer. I was amazed
how much better the speech was than on the Apple II. I sure wish I
knew where to get one of those little amps these days...I lost mine in
1981. Something about them...

Tom Lake

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Jul 28, 2001, 9:42:23 PM7/28/01

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The Radio Shack here in Malone still carries them. The case is a different
style but it's the same size and still gray. Have you looked in an RS
store?

Tom Lake

Walt Fles

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Jul 29, 2001, 10:57:59 PM7/29/01

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It would be easy to make one, aside from the "case work". It would be easy
enough to make a small amp based on an LM386 chip. That's how I made my
"equivalent".

Walt Fles
erie...@hotmail.com

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Mo

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Jul 30, 2001, 2:13:12 AM7/30/01

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I use (stole) my sisters Yamaha amplified stereo speakers off of her dusty
old Dell. With a handy dandy little mono to stereo adapter, I'm playing
Robot Attack in some serious stereo! "GAME OVER PLAYER ONE!!"

Mo

Sylvan Butler

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Jul 30, 2001, 4:21:57 PM7/30/01

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On Mon, 30 Jul 2001 02:57:59 GMT, Walt Fles <erie...@hotmail.com> wrote:
> It would be easy to make one, aside from the "case work". It would be easy
> enough to make a small amp based on an LM386 chip. That's how I made my
> "equivalent".

Or just take a pocket-size transistor radio, open the back, and
figure which terminal on the volume control is the input (tune
between stations and listen for noise as you touch it) and seperate
the trace from that terminal. mount a jack on the case and wire it
to that terminal. Voila! Little amp and speaker. Never could
figure out buying the radio shack version when for half the price
and five minutes work you could turn a radio into the same thing.

sdb

--
| Sylvan Butler | Not speaking for Hewlett-Packard | sbutler-boi.hp.com |
| Watch out for my e-mail address. Thank UCE. #### change ^ to @ #### |
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safety deserve neither liberty nor safety. --Benjamin Franklin, 1759
"Don't Tread On Me!"

Walt Fles

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Jul 30, 2001, 5:16:52 PM7/30/01

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You have much more fun than I do anymore. I remember the "good old days" of
college when I had time to do so.

It was probably a simple push-pull amp in the radio anyway so two
transistors sharing an emitter connection were probably where to look.

Walt
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Canadian CoCo Nut

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Aug 1, 2001, 5:42:44 PM8/1/01

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I took two of these mini amps removed the speaker from one and crammed
the two amp boards into one case the only addon was a power connector
for an external 9VDC power supply. I used two cassette cables with the
modified setup to save and load MC-10 files to and from the CoCo. This
gave me the ability to save MC-10 files to CoCo disks. This also gave
me the ability to load stored MC-10 machine code files from the CoCo
using CLOADM on the MC-10 then doing CSAVEM"filename",start,end,exec
on the CoCo. These will not work if the CoCo has the HD6309 CPU and /
or if the MC-10 has the HD6303 MCU.

Canadian CoCo Nut.

Tom Lake

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Aug 4, 2001, 4:58:47 PM8/4/01

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Radio Shack still carries them! The case is a little different in style
(but still gray) but it's easily recognizable as the same amp.

Tom Lake