commercial high-power transconductance amplifier!

Hello,

I was browsing through the Marchand Electronics page, and I stumbled on this... definitely looks like a high-power transconductance amplifier, and Marchand is an excellent company in regards to electronics.

$950

http://www.marchandelec.com/cl54.html

Would be fun to use with subwoofers as would bypass the issue of thermal compression and other non-linearities...

cheers,

-tal
 

rnrss

Member
2005-07-20 7:41 pm
na

rnrss

Member
2005-07-20 7:41 pm
na
jh6you said:

Constant current source . . . ? ? ?

My understanding is . . .
Transconductance amplifier (current amplifier) means that output current is proportional to input voltage while voltage amplifier means that output voltage is proportional to input voltage . . .


Regards
jH


Your understanding is correct... and it is called a ccs for that reason... The important thing I would point out to you however is that these amps have little or no damping and damping is what stops or reverses a speaker according to the signal put into it to prevent overshooting...

I did a couple of rather crude writeups on this if you woud like to see them, just beware of the elitest hype...
 
Re: Re: commercial high-power transconductance amplifier!

rnrss said:
Actually CCS amp add other nonlinearities, overshoot duu to no damping...

This is only true if the speaker unit has inadequate internal damping -- which describes most speakers available. Fortunately there are some very good drivers with adequate mechanical damping that work best with CCS amps.

dave