steenamaroo
Well-known member
- Joined
- Dec 23, 2009
- Messages
- 83
Hi all!
i recently got a lot of troubleshooting help here with some auditronics 110a modules (which are now running beautifully).
I've now come back with my tail between my legs, looking some help with my new ward beck m470a modules
i'm aware of the WBPS forum, but have been waiting for account verification for ages,,,so i thought i'd come here,,
My two modules are racked up and working beautifully, apart from one fault.
I've added my own phantom power, as per a few guides on the wbs site.
This simply provides +48 in and out of a mic/line switch, so that 48 volt is only present on mic selection.
It is then sent (via 2 6.8k resistors) to mic pins 1+2.
This works flawlessly on both units.
The units have a built in pad switch. when this is engaged, one unit is still fine, but the other only provides 12v for phantom power?!??
i've tested the voltage at various points and it seems that 48 volt is still present right the way up to the two resistors before mic pin 1+2, but on the mic side of the resistors i read 12v.
This is with or without a microphone.....
The schematic can be found here, but i think there's no amount of staring at it that's going to help me......
http://wbsps.kuzub.com/PDFs/M470A%20Input%20Module.pdf
can anyone see how this would be possible? or what kind of fault would cause it?
If it's any use the pinout is on page 21 and my phantom works like this.
1 +48 from psu into P2 X
2 with mic selected, +48 comes out of P2 U
3 this is taken, split into two, each fed through 6.8 resistors and sent to p1 w and p1 19.
P1 W AND P1 19 read 48v with no pad, and 12v with pad.
Much thanks in advance everyone!
i recently got a lot of troubleshooting help here with some auditronics 110a modules (which are now running beautifully).
I've now come back with my tail between my legs, looking some help with my new ward beck m470a modules
i'm aware of the WBPS forum, but have been waiting for account verification for ages,,,so i thought i'd come here,,
My two modules are racked up and working beautifully, apart from one fault.
I've added my own phantom power, as per a few guides on the wbs site.
This simply provides +48 in and out of a mic/line switch, so that 48 volt is only present on mic selection.
It is then sent (via 2 6.8k resistors) to mic pins 1+2.
This works flawlessly on both units.
The units have a built in pad switch. when this is engaged, one unit is still fine, but the other only provides 12v for phantom power?!??
i've tested the voltage at various points and it seems that 48 volt is still present right the way up to the two resistors before mic pin 1+2, but on the mic side of the resistors i read 12v.
This is with or without a microphone.....
The schematic can be found here, but i think there's no amount of staring at it that's going to help me......
http://wbsps.kuzub.com/PDFs/M470A%20Input%20Module.pdf
can anyone see how this would be possible? or what kind of fault would cause it?
If it's any use the pinout is on page 21 and my phantom works like this.
1 +48 from psu into P2 X
2 with mic selected, +48 comes out of P2 U
3 this is taken, split into two, each fed through 6.8 resistors and sent to p1 w and p1 19.
P1 W AND P1 19 read 48v with no pad, and 12v with pad.
Much thanks in advance everyone!