Was pretty excited to come across this mixer at an auction recently, especially given the good condition this old box was in. Since there doesn’t seem to be much information on the internet regarding these units (although there is a fair bit on the more famous DJ mixer, the Bozak CMA 10-2DL) I figured I would post some info and photos of the unit I have.
Bozak CMA 10-2 stereo mixer. 10 channels of transformer isolated mic pres. Each of the 10 channels can either be mono or stereo (mono is pin 3 hot, stereo is left channel pin 3 and right channel pin 2). Each channel has only an XLR input, gain control, mono/stereo switch and a pan switch (for hard left, hard right or center). From here the signal goes straight to 2 x unbalanced stereo tape outs (pre EQ and pre master gain) on ¼” connections (looking at photos on the internet, these also were sometimes RCA connections). There are also 2 x XLR (unbalanced) master outputs which are post the high/low shelving EQ and post L and R master gain control.
Reading up on some history of Bozak mixers, the first models were the CMA 6-1 and CMA 10-1 which were mono 6 and 10 channel ‘orchestral’ mixers developed in the 50’s. The CMA10-2 came after these but before the famous DJ mixer, the CMA 10-2DL which first came about in the early 70’s. Based on this, I would have a guess that this mixer was made sometime in the late 60’s.
Unfortunately, the mixer didn’t come with any documentation in the way of manuals or brochures. Interesting to know if anyone else has come across these mixers?
Bozak CMA 10-2 stereo mixer. 10 channels of transformer isolated mic pres. Each of the 10 channels can either be mono or stereo (mono is pin 3 hot, stereo is left channel pin 3 and right channel pin 2). Each channel has only an XLR input, gain control, mono/stereo switch and a pan switch (for hard left, hard right or center). From here the signal goes straight to 2 x unbalanced stereo tape outs (pre EQ and pre master gain) on ¼” connections (looking at photos on the internet, these also were sometimes RCA connections). There are also 2 x XLR (unbalanced) master outputs which are post the high/low shelving EQ and post L and R master gain control.
Reading up on some history of Bozak mixers, the first models were the CMA 6-1 and CMA 10-1 which were mono 6 and 10 channel ‘orchestral’ mixers developed in the 50’s. The CMA10-2 came after these but before the famous DJ mixer, the CMA 10-2DL which first came about in the early 70’s. Based on this, I would have a guess that this mixer was made sometime in the late 60’s.
Unfortunately, the mixer didn’t come with any documentation in the way of manuals or brochures. Interesting to know if anyone else has come across these mixers?