Can anyone give me a tip on how I can rig up a battery box to run the LEDs on my Series II (without a power supply, that is).
The plan is to run the pickup with the onboard batteries (2 9v), and run the LEDs through the 5 pin jack via external batteries. The problem I'm having is which pin powers the LEDs. Pin 4, 5, or both?
Or can this even be done?
http://club.alembicguitars.net/Images/449/8450.html (http://club.alembicguitars.net/index.php?topic=20768)
Has more info, but I don't know if the LEDs are powered off of the positive or negative or both side(s).
Here's the response from Ron via the Helpdesk inquiry of the same:
On the DS5 diagram posted on the Forum, pis 4 and 5 are labeled as +V and -V respectively. Does the 5 pin power the LEDs and the 4 pin the pickups?
no. power is balanced rail type. the instrument will operate from + 9V on pin 4 and - 9V on pin 5, since the op-amps can adjust over wide voltage ranges.
but the LED's are connected in series and require higher voltage, and for an external battery pack, + 18V on pin 4 and - 18 V on pin 5 will operate fine.
the DS5 power supply give around + 22V on pin 4 and - 22V on pin 5, but the four batteries work great for both LED and the op-amps.
Do I run the battery pack (4 9v batteries in series) to pins 4 and 5? Or run 2 9v (series) to pin 4 and 2 9v (series) to pin 5?
hook 2 9V batteries in series with the negative grounded (to pin 1) and the positive lead to pin 4.
hook another 2 9V batteries in series with the positive grounded (to pin 1) and the negative lead to pin 5.
Thanks so much! This will get me through those long, dark nights on stage until I can get a power supply.