ACA to PSA conversion?

[chrisaxeman]

Hi,

I just bought an old CE-2 chorus (MIJ it is alledged).I notice that the adaptor spec is an ACA.

What is the difference?I seem to think that the ACA is Barrel negative from memory,the reverse of a PSA.

Can I convert the pedal to centre negative 9vdc?

Cheers

Chris.....

[stinkfoot]

ACA is center negative/barrel positive, the same as PSA. The difference is that ACA is 12 volts unregulated (9v unreg after 1997), while PSA is 9 volts regulated.

If the LED doesn't light up properly with a regulated 9 volt DC supply, you can quite easily modify the pedal to work with 9 volts. If you search the forum, I'm sure you'll find lots of threads discussing this. There are a few ways to get it done - one way is to remove and jumper the resistor/diode combination from the adapter jack's ground to the pcb ground plane. Another involves moving the adapter jack ground wire to connect directly to ground.

However, if you use a daisy chain or non-isolated power supply to power PSA pedals alongside the CE-2, it will most likely receive full power (LED should light up) even without modification (as long as the signal cables are connected as well).

/Andreas

[jplaudio]

http://jpl-audio.com/acapsa.html