Need schematic for Electro Voice ZXA1

[The Dude]

As the title says, looking for a schematic for the EV ZXA1. It's a little powered speaker.
I tried EV and was told they only release schematics to authorized service centers.

[Enzo]

Oh and EV used to be so friendly when they were in Buchanan Mich.

[The Dude]

Yep. Things have changed radically since they were bought by Bosch.

I checked as much as I can without paper. Switching supply seems to be working- +&-15 at op amps, +&-66 output rails there, no shorted outputs, signal all the way to master volume control, etc. The amp appears muted- not even hiss from speaker. I need to find out why.

[Enzo]

I assume you have tested the speaker including is wiring all the way to the amp circuit?

[The Dude]

Yes sir. Drivers Tested (horn driver and speaker both good) and wiring. Scope shows no output to the speakers from the amp.

[Enzo]

We got some bord photos? What sort of power amp. Is it perhaps biamped even? power IC or discrete transistors?

[The Dude]

I've already reassembled hoping for schematics. I've got too many repairs in the shop to spend more time on this one at the moment. I'll upload photos when I get back into it. FWIW: I believe it's biamped and has IC driven FET outputs.