It is an 'instrumentation amplifier' topology but very low noise. The
pin compatible replacements I have found all seem to have ~10x the noise
of the 2017. No -128dB EINs for those!
The factory says there will not be another production run of the part.
This will pose a problem for those mixer/MIC preamp manufacturers and
servicers.
So if anyone has dealt with this issue, please respond
HUH?
I thought the SSM2017 _was_ the recommended replacement part now that
the SSM2016 and SSM2015 had gone away. Don't tell me that it's going
away too now?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Greg:
AFAIK, the SSM2017 is alive and well...although the leadtimes may be
long.
McQ
__
Mark McQuilken
FMR Audio
www.fmraudio.com
(800)343-9976 - US Only
(512)280-6557 Voice
(512)280-8627 Fax
well I'm sure you'd know, or else your heart is pounding faster than an
armadillo crossing the street chased by Fletcher with a baseball bat.
Will it have DI's, and when can I get one?
cheer,
michael ortega
Gantt Kushner
Gizmo Recording Company
Silver Spring, Maryland
>
> I thought the SSM2017 _was_ the recommended replacement part now that
> the SSM2016 and SSM2015 had gone away. Don't tell me that it's going
> away too now?
> --scott
--
Gantt Kushner
Gizmo Recording Company
Silver Spring, Maryland
>Has anyone found a suitable replacement for the discontinued SSM2017?
>
>It is an 'instrumentation amplifier' topology but very low noise. The
>pin compatible replacements I have found all seem to have ~10x the noise
>of the 2017. No -128dB EINs for those!
>
>The factory says there will not be another production run of the part.
>This will pose a problem for those mixer/MIC preamp manufacturers and
>servicers.
>
>So if anyone has dealt with this issue, please respond
>
I wasn't aware that anybody made pin-compatible replacements, but then
again I haven't looked in a long while.
I recall seeing recently an ad from Burr-Brown about a series of
audio-oriented specialty chips, one of them being a low noise mic
pre-amp of the "2017" variety. Don't know if it's pin-compatible, but
you should be able to find info on their web site.
Villem Teder
Toronto
The INA103 is the device you're talking about. It actually sounds
better than the SSM2017 but it's a 16 pin IC, so it isn't pin
compatible. IMHO, the world would be a better place if there were an
INA103 everywhere there's an SSM2017... but I can understand the
annoyance that this will undoubtedly cause manufacturers that use the
2017!
Regards,
Monte McGuire
mcg...@world.std.com
A hand-wired daughter board with an INA103 on it. Perfboard and DIP
headers are your friends.
> well I'm sure you'd know, or else your heart is pounding faster than an
> armadillo crossing the street chased by Fletcher with a baseball bat.
> Will it have DI's, and when can I get one?
The armadillo, or the baseball bat? We know Fletcher doesn't like to
use DIs except for a little touch-up here and there.
--
I'm really Mike Rivers (mri...@d-and-d.com)
>Gantt Mann Kushner <gi...@his.com> wrote:
>>The SSM2015 was the mic/line amp for the old TAC Scorpion. It's
>>discontinued as far as I know (bummer - I have an old Scorpion...) and
>>neither the SSM2016 nor the SSM2017 are pin-for-pim replacements. I've
>>been praying for an upgrade path for my 2015s for years to no avail. Any
>>ideas out there?
>
>A hand-wired daughter board with an INA103 on it. Perfboard and DIP
>headers are your friends.
>--scott
Don't forget the poor cousin to the perfboard... the dead bug.
Mark Plancke
SOUNDTECH RECORDING STUDIOS
Windsor, Ontario, Canada
http://SoundTechRecording.com
I don't know the secret of success, but the secret
of failure is to try to please everybody. --Bill Cosby
I think I first encountered dead bug techniques in some 1970's Popular
Electronics article in which they cut all the pins off of the TTL chips and
glued them all together in a tall stack before tack-soldering hookup wire
between the contacts. It definitely left a bad taste in my mouth and kept
me away from the method for a long time.
That said, I recently saw a piece of avionics gear that had a dead bug
ECO on the board, from the factory. I was a little taken aback but I guess
it meets specs.
The INA103 is also available in a small outline (surface mount)
package, and if you have some PCB software, a layout using the SO16
part might make a better retrofit board to mount on a DIP header. I
tried to hand wire a 103 into an SSM2017 circuit and it was a real
pain in the rear. A good PCB makes it a lot more reliable too.
As far as the upgrade aspects of the 103, the 2015 is a really good
sounding chip. The 103 will be different, but not really all that
much better or worse. I would not feel the need to change out all the
channels unless the 103 really does sound a lot better and off the
cuff, I'm not sure that's the case.
Best of luck,
Monte McGuire
mcg...@world.std.com
Monte P McGuire wrote:
> IMHO, the world would be a better place if there were an
> INA103 everywhere there's an SSM2017...
To help achieve that noble aim, would you or someone else kindly post a
schematic for a "drop-in" 2017-replacement circuit using a INA103?
Thanks,
ken
>That said, I recently saw a piece of avionics gear that had a dead bug
>ECO on the board, from the factory. I was a little taken aback but I guess
>it meets specs.
>--scott
Even my Langevin AM-16's have some dead bug transistors in there...
Not sure why they did it but they made it look neat and cool at the
same time.
Mark
BB will soon release a new audio instrumentation amp, the INA163. The
preliminary specs are similar to the specs of the INA103 (higher maximun
gain, slightly better THD+N, slightly higher offset and power supply
limited to +-18V insteed of 24V), the price is annouced to half the
price of an INA103. So wait and see how it sound but I suspect we will
see an INA163 everywhere there was an SSM2017 in a couple of years.
Christophe
--
*********************************************
* Christophe Vescovi *
* ----------------------------------------- *
* Institut des Sciences Nucleaires *
* 53 Av. des Martyrs - 38026 GRENOBLE Cedex *
* e-mail : ves...@isn.in2p3.fr *
* Tel : (33) 04.76.28.40.88 *
*********************************************
Time for a new board.
db
In article <gizmo-22080...@pm2a-110.his.com>, gi...@his.com
(Gantt Mann Kushner) wrote:
> The SSM2015 was the mic/line amp for the old TAC Scorpion. It's
> discontinued as far as I know (bummer - I have an old Scorpion...) and
> neither the SSM2016 nor the SSM2017 are pin-for-pim replacements. I've
> been praying for an upgrade path for my 2015s for years to no avail. Any
> ideas out there?
>
> Gantt Kushner
> Gizmo Recording Company
> Silver Spring, Maryland
> >
> > I thought the SSM2017 _was_ the recommended replacement part now that
> > the SSM2016 and SSM2015 had gone away. Don't tell me that it's going
> > away too now?
> > --scott
--
David 'db' Butler, Consultant
Acoustics by db
"...all the rest are just brokers"
now on the web at http://www.home.earthlink.net/~ob1db Boston, Mass Phone 617 969-0585 Fax 617 964-1590