Creative CT1975-SAM pinout or equivalent?

N

N_Cook

Guest
No info found on these 11 pin audio output devices except
"Creative used these amplifiers in the previous generation speaker systems,
like FPS-1000 and FPS-1500."

Here used on one channel in a 2001 Cambridge soundworks desktop theater
DTT2200, other numbers on the chassis EAX CSW 4300
 
N_Cook <diverse@tcp.co.uk> wrote in message
news:hj96cp$ks1$1@news.eternal-september.org...
No info found on these 11 pin audio output devices except
"Creative used these amplifiers in the previous generation speaker
systems,
like FPS-1000 and FPS-1500."

Here used on one channel in a 2001 Cambridge soundworks desktop theater
DTT2200, other numbers on the chassis EAX CSW 4300
Click to expand...

looks like failure in data-known ICs TDA7372 or M51132, not CT1975
For 2 known good CT1975 , DC V, no load
pins 1 to 11
0.8(ch2 in), *, 0,8,0.8(ch1 in),0(gnd),8,8(op1),16 (sup), 8(op2),12.3

* is 2 V on one used as 2 separate channels
and varies (no pcb connection to that pin) 0 to 0.6V floating presumably, on
one probably set in bridge configuration driving the sub-woofer.

Anyone have a more complete pinout/full data, JIC ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm
 
N_Cook <diverse@tcp.co.uk> wrote in message
news:hj9h9o$i72$1@news.eternal-september.org...
N_Cook <diverse@tcp.co.uk> wrote in message
news:hj96cp$ks1$1@news.eternal-september.org...
No info found on these 11 pin audio output devices except
"Creative used these amplifiers in the previous generation speaker
systems,
like FPS-1000 and FPS-1500."

Here used on one channel in a 2001 Cambridge soundworks desktop theater
DTT2200, other numbers on the chassis EAX CSW 4300




looks like failure in data-known ICs TDA7372 or M51132, not CT1975
For 2 known good CT1975 , DC V, no load
pins 1 to 11
0.8(ch2 in), *, 0,8,0.8(ch1 in),0(gnd),8,8(op1),16 (sup), 8(op2),12.3

* is 2 V on one used as 2 separate channels
and varies (no pcb connection to that pin) 0 to 0.6V floating presumably,
on
one probably set in bridge configuration driving the sub-woofer.

Anyone have a more complete pinout/full data, JIC ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm
Click to expand...
pin11 is standby
pin3 connected to ground

any guesses on the next 2
p7
in normal amp 100uF cap to ground
subwoofer amp 220nF to ground

p2 on the CT1975 where there is a connection to p2
100K to ground and also to the base of a TO92 via an r,

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm
 
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