I recently purchased a used NAD 2140 amplifier (2x40W) but it came without a
manual. On the back are three buttons: "S.L.C."; "Soft Clipping"; and
"Bridged". Does anyone know what the "S.L.C." stands for and what it does?
Does anyone know how the soft clipping is implemented and how it works?
I'm beginning to think this thing is older than I thought, and that it might
start breaking down soon. It would be nice to have some info on it should
that occur. I tried several search engines and found the power rating but
nothing else usefull.

KJM wrote:
I recently purchased a used NAD 2140 amplifier (2x40W) but it came without a
manual. On the back are three buttons: "S.L.C."; "Soft Clipping"; and
"Bridged". Does anyone know what the "S.L.C." stands for and what it does?
Does anyone know how the soft clipping is implemented and how it works?
I'm beginning to think this thing is older than I thought, and that it might
start breaking down soon. It would be nice to have some info on it should
that occur. I tried several search engines and found the power rating but
nothing else usefull.

I had a 2140 back in the 80s - I found it to be a great amplifier.

I don't remember S.L.C. I think there was a "high/low impedance"
switch on the back of mine, though.

The soft clipping feature only operates when a peak reaches the
full-scale output of the amplifier (i.e., when you're playing it
*LOUD*). Instead of abruptly limiting the waveform at (or near)
the power supply voltage (which generates a lot of high frequency
energy and also just plain sounds bad), as most amplifiers do,
it gradually limits the output voltage, rounding the edges.
--
% Randy Yates % "...the answer lies within your soul
%% Fuquay-Varina, NC % 'cause no one knows which side
%%% 919-577-9882 % the coin will fall."
%%%% % 'Big Wheels', *Out of the Blue*, ELO
http://home.earthlink.net/~yatescr

KJM wrote:
I recently purchased a used NAD 2140 amplifier (2x40W) but it came without a
manual. On the back are three buttons: "S.L.C."; "Soft Clipping"; and
"Bridged". Does anyone know what the "S.L.C." stands for and what it does?
Does anyone know how the soft clipping is implemented and how it works?
I'm beginning to think this thing is older than I thought, and that it might
start breaking down soon. It would be nice to have some info on it should
that occur. I tried several search engines and found the power rating but
nothing else usefull.

I had a 2140 back in the 80s - I found it to be a great amplifier.

I don't remember S.L.C. I think there was a "high/low impedance"
switch on the back of mine, though.

The soft clipping feature only operates when a peak reaches the
full-scale output of the amplifier (i.e., when you're playing it
*LOUD*). Instead of abruptly limiting the waveform at (or near)
the power supply voltage (which generates a lot of high frequency
energy and also just plain sounds bad), as most amplifiers do,
it gradually limits the output voltage, rounding the edges.
--
% Randy Yates % "...the answer lies within your soul
%% Fuquay-Varina, NC % 'cause no one knows which side
%%% 919-577-9882 % the coin will fall."
%%%% % 'Big Wheels', *Out of the Blue*, ELO
http://home.earthlink.net/~yatescr

"KJM" wrote in message
news
I recently purchased a used NAD 2140 amplifier (2x40W) but it came without
a
manual. On the back are three buttons: "S.L.C."; "Soft Clipping"; and
"Bridged". Does anyone know what the "S.L.C." stands for and what it does?

SLC is Speaker Load Compensator. I believe it's a system in which it
compensates for lengths of cable to give a more even distribution. Not
exactly sure how it works though....

Snip rest of stuff I'm not sure about

-Tim

"KJM" wrote in message
news
I recently purchased a used NAD 2140 amplifier (2x40W) but it came without
a
manual. On the back are three buttons: "S.L.C."; "Soft Clipping"; and
"Bridged". Does anyone know what the "S.L.C." stands for and what it does?

SLC is Speaker Load Compensator. I believe it's a system in which it
compensates for lengths of cable to give a more even distribution. Not
exactly sure how it works though....

Snip rest of stuff I'm not sure about

-Tim