The way I put this together was that I have it built right into my patchbay. My PT outputs normal into my mixer where 10K resistors sum the + and – sides into their respective bus wires. Odd channels sum to the left and even channels sum to the right. The last four channels of my 16 channel mixer are mono. I did this by using 14.3k in place of 10K resistors (incorporating the two resistors into one) to go to both sides.

TNC ACM Chinese Microphone Mod Meta

This is my own mic mod meta for the purposes of consolidating information on the three specific Chinese microphones I bought through the TNC Musicians Workshop “Group Buy.” When all is said and done, there will be this thread containing links and quotes from outside sources and a tread for each of the three microphones I will be addressing (I will try to credit my sources as best I can, but to all those who get snubbed, I apologize). The individual threads will cover my own personal experiences in the mic mod process. I will be updating this post throughout the process.

ACM-1200

The ACM-1200 is a rebrand of the same mic as is the Apex 450, Nady TCM1150, Avantone CV-12 and the Telefunken R-T-F M16. The mods for these mics are vast and well documented. My goals are:

Replace Tubes (Chinese 12AX7B)
Replace Transformers (Chinese Unbranded 10:1)
Remove unnecessary parts (Filter Caps to compensate crap transformer, etc)
Replace important parts (C8, etc)
Remove Cathode Follower (Unnecessary after transformer swap)
Replace multipin cable (Not first priority but definitely needs to happen)
Replace Capsule (Dale’s M7 is what I’m thinking but not ruling out Peluso’s)

Links:

http://studioforums.com/eve/forums/a/tpc/f/1526095781/m/2111089522/p/1
Main Apex thread on StudioForums.com

http://studioforums.com/eve/forums/a/tpc/f/1526095781/m/2111089522?r=4971028262#4971028262
A specific set of mods with schematic

http://www.prodigy-pro.com/diy/index.php?topic=21266
Mic Mod Meta

http://www.prodigy-pro.com/diy/index.php?topic=27793.0
ACM Specific mod thread

http://www.10000cows.com/M7CopyCapsulePhotos.htm
Dale’s Capsule Process

ACM-70

Seems to be an Apex 210 in a slightly different case. It came with a shock mount and case. I overall like the sound of these mics but some mods are going to be needed:

Change transformer
Remove inner headbasket? (Not sure about this one)
Re-Ribbon (I may send them off for that one)

Links:

http://www.hometracked.com/2007/08/17/ribbon-mic-mod-part-1-apex-205/
A ribbon mod how-to thread.

http://www.morphproductions.com/apex210transformermod.htm
Another ribbon mod how-to thread.

http://www.hometracked.com/2007/08/28/ribbon-mic-sag-and-repair/
Ribbon Sag Repair article

http://www.lkmusic.co.nz/ribbonfix.htm
Ribbon Replacement Article

ACM-3

This is an obvious rip-off of a Royer R-121 or a Bang and Olufsen ribbon mic. It sounds a bit dark and wooly as is. I’m looking forward to hearing different transformer options on this.