Looking for info about BBC AM9/16B/121 and AM22/9/1

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andre tchmil

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Looking for  info about BBC AM9/16B/121 and AM22/9/1

AM9 is a dual preamp
AM22 is a dual eq.

found some info in the BBC technical papers but not for these specific type numbers ( btw I guess the last number is production sn or so ? )

Would like to have pinout / schematics.

Thanks in advance
 
Here is a scrap of info about the AM9/6 - perhaps it will help?  BEWARE - It is Copied from the Internet and UNTESTED!

"The AM9/6 pinout is as follows for each of the two connectors:

  1 -
  2 -
  3 -
  4 - I/P SIGNAL GND
  5 - I/P + @ 600 ohm
  6 - I/P -
  7 - I/P + @ 60 ohm
  8 - I/P -
  9 - 24v  -ve
10 - 24v +ve GND
11 -
12 -
13 - O/P (unbal, 600 ohm)
14 - O/P SIGNAL GND
15 - CHASSIS GND

(Pins 6 & 8 are linked at the connector.)


Note that on the right-hand connector (when looking at the back of the module) for AMP. A, pin 1 is at the bottom. On the left-hand connector, for AMP. B, pin 1 is at the top."
 
Thanks but I already checked and the connections seems to be different.
I'm mostly interested in the power section.


mjrippe said:
Here is a scrap of info about the AM9/6 - perhaps it will help?  BEWARE - It is Copied from the Internet and UNTESTED!

"The AM9/6 pinout is as follows for each of the two connectors:

  1 -
  2 -
  3 -
  4 - I/P SIGNAL GND
  5 - I/P + @ 600 ohm
  6 - I/P -
  7 - I/P + @ 60 ohm
  8 - I/P -
  9 - 24v  -ve
10 - 24v +ve GND
11 -
12 -
13 - O/P (unbal, 600 ohm)
14 - O/P SIGNAL GND
15 - CHASSIS GND

(Pins 6 & 8 are linked at the connector.)


Note that on the right-hand connector (when looking at the back of the module) for AMP. A, pin 1 is at the bottom. On the left-hand connector, for AMP. B, pin 1 is at the top."
 
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