Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Radio Shack Model 277-1008 Mini Amplifier For Person with Disability: Where To Get Now >
813 views
Skip to first unread message
Bob
Aug 9, 2015, 12:45:59 PM8/9/15
to
Hello,
Hoping someone here might know.
Have been using a Radio Shack Mini Amplifier Model No. 277-1008
for many years to help out a person with a disability.
Really important for them
As no longer a R/S, have been trying to find who might actually
make/made this unit, and/or who might still be carrying them.
Anyone have any ideas where I can purchase a few.
Much hanks,
Bob
Hoping someone here might know.
Have been using a Radio Shack Mini Amplifier Model No. 277-1008
for many years to help out a person with a disability.
Really important for them
As no longer a R/S, have been trying to find who might actually
make/made this unit, and/or who might still be carrying them.
Anyone have any ideas where I can purchase a few.
Much hanks,
Bob
Jeff Liebermann
Aug 9, 2015, 12:53:11 PM8/9/15
to
On Sun, 09 Aug 2015 12:45:55 -0400, Bob <rgs...@notme.invalid> wrote:
>Have been using a Radio Shack Mini Amplifier Model No. 277-1008
>for many years to help out a person with a disability.
>Really important for them
It's still in the catalog:
>Have been using a Radio Shack Mini Amplifier Model No. 277-1008
>for many years to help out a person with a disability.
>Really important for them
<http://comingsoon.radioshack.com/radioshack-mini-audio-amplifier/2771008.html>
>As no longer a R/S, have been trying to find who might actually
>make/made this unit, and/or who might still be carrying them.
stores are still open as is their mail order business.
>Anyone have any ideas where I can purchase a few.
Or eBay at outrageous prices:
<http://www.ebay.com/sch/i.html?_nkw=277-1008>
--
Jeff Liebermann je...@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
Jeff Liebermann
Aug 9, 2015, 12:57:22 PM8/9/15
to
On Sun, 09 Aug 2015 09:53:14 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
>On Sun, 09 Aug 2015 12:45:55 -0400, Bob <rgs...@notme.invalid> wrote:
>
>>Have been using a Radio Shack Mini Amplifier Model No. 277-1008
>>for many years to help out a person with a disability.
>>Really important for them
>
>It's still in the catalog:
><http://comingsoon.radioshack.com/radioshack-mini-audio-amplifier/2771008.html>
>
>>As no longer a R/S, have been trying to find who might actually
>>make/made this unit, and/or who might still be carrying them.
>
>Rumors of Radio Shack's demise have been greatly eggagerated. Many
>stores are still open as is their mail order business.
Oops. Looks like the mail order business isn't there any more.
However, the store search found several stores that allegedly have it
in stock.
wrote:
>On Sun, 09 Aug 2015 12:45:55 -0400, Bob <rgs...@notme.invalid> wrote:
>
>>Have been using a Radio Shack Mini Amplifier Model No. 277-1008
>>for many years to help out a person with a disability.
>>Really important for them
>
>It's still in the catalog:
><http://comingsoon.radioshack.com/radioshack-mini-audio-amplifier/2771008.html>
>
>>As no longer a R/S, have been trying to find who might actually
>>make/made this unit, and/or who might still be carrying them.
>
>Rumors of Radio Shack's demise have been greatly eggagerated. Many
>stores are still open as is their mail order business.
However, the store search found several stores that allegedly have it
in stock.
Klay Anderson
Aug 9, 2015, 1:08:44 PM8/9/15
to
I use these for simple hearing assist. No volume controls but nice. http://www.smokeyamps.com/
Ian Field
Aug 9, 2015, 3:16:14 PM8/9/15
to
"Bob" <rgs...@notme.invalid> wrote in message
news:mq8011$s61$1...@dont-email.me...
too low just add a JFET source follower. You can use the volume pot as rhe
source resistor, then all you need is a gate-leak resistor and input
coupling capacitor.
Most types run off a wall-wart, but you can get them with an internal
battery compartment.
A couple of years back; a columnist in one of the hobby magazines mentioned
a speaker amplifier unit for Walkman style gadgets in the £1 shop - needless
to say, all gone by the time I got there. Apparently the unit had a pair of
small speakers driven by a TDA2822.
Ready made amplifiers aren't exactly rare, back in the 70s - 80s, any number
of component stockists advertised small amplifiers (just a populated PCB)
around the 250mW mark.
An old vest pocket transistor radio is a good candidate for the JFET
modification - but those are often collectibles, such vandalism would
horrify some people.
Dave M
Aug 9, 2015, 3:24:42 PM8/9/15
to
Search for Personal Amplifier on Amazon.com. There are several there that
have builtin microphones, but use earphones instead of a builtin speaker.
Prices are generally under $30.
My dad used one of those amplifiers for several years before his death.
Sorry, but it's long gone now, else I'd be glad to send it to you.
If you're into electronics kits, you might check out the kit at
http://www.bgmicro.com/KITMK136.aspx. Looks interesting, small enough to
put into a small box with a battery and carry in your shirt pocket. And
it's STEREO!!
Cheers,
Dave M
have builtin microphones, but use earphones instead of a builtin speaker.
Prices are generally under $30.
My dad used one of those amplifiers for several years before his death.
Sorry, but it's long gone now, else I'd be glad to send it to you.
If you're into electronics kits, you might check out the kit at
http://www.bgmicro.com/KITMK136.aspx. Looks interesting, small enough to
put into a small box with a battery and carry in your shirt pocket. And
it's STEREO!!
Cheers,
Dave M
Ian Field
Aug 9, 2015, 3:34:56 PM8/9/15
to
"Dave M" <dgmina...@mediacombb.net> wrote in message
news:HpOdnWNPpZJqNVrI...@giganews.com...
> Search for Personal Amplifier on Amazon.com. There are several there that
> have builtin microphones, but use earphones instead of a builtin speaker.
> Prices are generally under $30.
>
> My dad used one of those amplifiers for several years before his death.
> Sorry, but it's long gone now, else I'd be glad to send it to you.
>
> If you're into electronics kits, you might check out the kit at
> http://www.bgmicro.com/KITMK136.aspx. Looks interesting, small enough to
> put into a small box with a battery and carry in your shirt pocket. And
> it's STEREO!!
A stereo unit can be a PITA if you only want mono, but if its a common chip
> have builtin microphones, but use earphones instead of a builtin speaker.
> Prices are generally under $30.
>
> My dad used one of those amplifiers for several years before his death.
> Sorry, but it's long gone now, else I'd be glad to send it to you.
>
> If you're into electronics kits, you might check out the kit at
> http://www.bgmicro.com/KITMK136.aspx. Looks interesting, small enough to
> put into a small box with a battery and carry in your shirt pocket. And
> it's STEREO!!
and not already BTL, most have a sample circuit for a BTL amp included in
the appnote.
Michael Black
Aug 9, 2015, 6:48:23 PM8/9/15
to
big, now everyone with their Walkman, oops iPod, are throwing out their
stereo system and replacing it with a docking station, which is just an
amplifier with speakers in the same box, so stereo separation is virtually
non-existent.
Oddly, there was a period when boomboxes included auxiliary inputs,
because they wanted to be "ready" for CD players that were either not yet
out, or too expensive to build into the thing. So they also have
auxiliary inputs, if they are of the right vintage.
Anything with an amplifier should be useful, just find a way to feed the
audio into it. In the old days it was easy, the top of the volume control
would be the place, a coupling capacitor would make sure all was safe.
But now, the volume control may not be a suitable marker, the control may
not be attenuating the audio signal, but varying a DC voltage to control a
stage that is controlling volume.
Michael
jurb...@gmail.com
Aug 10, 2015, 1:17:39 AM8/10/15
to
>"Anything with an amplifier should be useful, just find a way to feed the
>audio into it. In the old days it was easy, the top of the volume control
>would be the place, a coupling capacitor would make sure all was safe.
>But now, the volume control may not be a suitable marker, the control may
>not be attenuating the audio signal, but varying a DC voltage to control a
>stage that is controlling volume."
Or a rotary encoder going to the microprocessor.
>audio into it. In the old days it was easy, the top of the volume control
>would be the place, a coupling capacitor would make sure all was safe.
>But now, the volume control may not be a suitable marker, the control may
>not be attenuating the audio signal, but varying a DC voltage to control a
>stage that is controlling volume."
MJC
Aug 10, 2015, 5:33:44 AM8/10/15
to
In article <d42bdaa5-2856-4d16...@googlegroups.com>,
jurb...@gmail.com says...
unfortunately was stolen!) causes a motor to turn a nice large volume
control knob, on which a flashing LED shows what setting it has reached.
Much better than a digital display!
I have only recently given up using my Nikko TRM 40LA amplifier which I
bought second hand from an ex-pat colleague on a business trip to NY
City in the early 1970s. Although it was fairly heavy (with of course a
large power transformer) it came back to the UK embedded in my dirty
laundry in my suitcase. Since the instruction booklet included a
schematic I tweaked some circuits as I saw fit...
Mike.
jurb...@gmail.com says...
>
> >But now, the volume control may not be a suitable marker, the control
may
> >not be attenuating the audio signal, but varying a DC voltage to control a
> >stage that is controlling volume."
>
> Or a rotary encoder going to the microprocessor.
I rather like my old JVC hi-fi in which the remote control (which
> >But now, the volume control may not be a suitable marker, the control
may
> >not be attenuating the audio signal, but varying a DC voltage to control a
> >stage that is controlling volume."
>
> Or a rotary encoder going to the microprocessor.
unfortunately was stolen!) causes a motor to turn a nice large volume
control knob, on which a flashing LED shows what setting it has reached.
Much better than a digital display!
I have only recently given up using my Nikko TRM 40LA amplifier which I
bought second hand from an ex-pat colleague on a business trip to NY
City in the early 1970s. Although it was fairly heavy (with of course a
large power transformer) it came back to the UK embedded in my dirty
laundry in my suitcase. Since the instruction booklet included a
schematic I tweaked some circuits as I saw fit...
Mike.
Ian Field
Aug 10, 2015, 12:20:16 PM8/10/15
to
"Michael Black" <et...@ncf.ca> wrote in message
news:alpine.LNX.2.02.1...@darkstar.example.org...
is too low for most signal sources you might want to patch into it.
My solution is to build a JFET source follower onto the input, you can use
the pot as the source resistor, in front of the JFET you only need a
gate-leak resistor and coupling cap.
Tim Schwartz
Aug 11, 2015, 9:37:44 AM8/11/15
to
There happens to be a new one on e-bay right now, for what I think is
too much money:
http://www.ebay.com/itm/Radioshack-Mini-Amplifier-Speaker-277-1008-BRAND-NEW-PA-Presentation-Meetings-/261988051819?hash=item3cffb46b6b
If you watch e-bay and similar sites for a while you may find a few.
Regards,
Tim
0 new messages