CDX reverse engineering

[breizheau]

OK, thx. I saw in a thread the mod to "accelerate" the TR.

 

[breizheau]

To get -/+ 16 V, do the following values look ok for you ? Sorry, i don't want to do any mistake....

R1 : 1K
R2 : 68R
R3 : 150K
R4 : 1M
R5 : 150R

 

[teddy_pardo]

The values seem correct, though it's better to use a value around 250 Ohm for R2 and calculate R1 accordingly.

 

[breizheau]

OK, i will see what i can do.

 

[breizheau]

I have found 121R and 5K6 in stock I will put 2x121R serial to get 240R and 2x5K8 in // to get 2K8.
With these values i will have 15.8V. Seems not too bad.

I still wonder if i will put TR only for the last 2 OPA or to put the TR to power the 6 OPA. In this case, where i have to put the TR ?

Today i have planned to open the CDP to take pictures to let you show mw what to do inside !