TNC ACMP-73 for sale - Fantastic condition....

  • Thread starter Thread starter vicenzajay
  • Start date Start date
Is it still available?

I know this is an old thread, does the TNC ACMP-73 still happen to be for sale, or does anyone else know of one available? Thanks!
 
This was sold - these things are getting hard to find now that folks know about them....I kept one of them and wound up with an ACMP-84 as well. Nice pair of pres with excellent EQs...good luck to you in your search!
 
I want to thank you again Vicenajay. I'm still loven' the TNC ACMP-73 it's a great unit!!!
 
Moresound - AWESOME! These are really great preamps, but what I like the most is the analog EQ circuit....so tweakable without any phase wonkiness.
 
moresound said:
I want to thank you again Vicenajay. I'm still loven' the TNC ACMP-73 it's a great unit!!!
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vicenzajay said:
Moresound - AWESOME! These are really great preamps, but what I like the most is the analog EQ circuit....so tweakable without any phase wonkiness.
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Glad to see another 73 found a good home. I've got 4 of 'em and they are my favorites. My studio is wired for 32 full time channels, so I have to use lots of other pres. I have two of the 73's in my main vocal chains, and two open for extras. But if I had 32 of 'em--everything would go through 'em.
 
32 of 'em hmmmmm ..... now you've got me thinking Whitestrat.
 
Yeah, I have 4 of them.
2 dedicated to drum kit , one to vocal and 1 to bass guitar.
I wished I had picked up a few more.
 
tmix said:
Yeah, I have 4 of them.
2 dedicated to drum kit , one to vocal and 1 to bass guitar.
I wished I had picked up a few more.
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Dang it!!! I saw the thread title and thought some came up for sale.
 
crazydoc said:
The TnC ACMP preamps. The 73, 84 and 81's all have the same gain switching arrangement, which transiently connects the output of the first preamp stage to its input at switch position 7, causing it to oscillate, producing a huge voltage spike which is amplified and can cause the output transistor's emitter resistor to fry, and damage equipment connected downstream.

There are several corrections for this, but they either cause loss of one gain position, or are electromechanically difficult to implement. Make sure the unit you are buying has had this corrected, or that you are willing/able to do it yourself. The easiest fix is described here:

https://homerecording.com/bbs/showpost.php?p=3090921&postcount=12
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I know this thread is years old. You seem very knowledgeable about the TNC ACMP units. I recently purchased one. Did anyone ever figure out any proper solutions to fix the pop on the input gain? Also, have you played around with any modifications for these units? I have the 84.
 
crazydoc said:
To my knowledge there is no "proper fix" commercially available currently, though it is possibly being worked on.

Easiest by far is moving one end of a resistor. This can be done without removing the board from the unit. You lose one gain position, but this is of minimal importance.
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I was trying to visit the link that details the easiest fix you posted...the link isn't active. Or at least it seems that way.
 
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