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SNOM PA1+ with External Amp (alien.top)

submitted 1 year ago by Limeasaurus@alien.top to c/voip@netheads.online

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We have a couple of SNOM PA1+ units using the lineout to an external amp's aux port. Everything is working correctly, except the audio is really quiet (two big PA speakers you can only hear if you are within 20 feet of at max volume).

If I remove the aux cable from the line out of the Snom and place it in my phone it's really loud and clear. I've tried hooking headphones to the Snom's line out and they are medium volume.

The volume is maxed to 15. I don't see an option to increase vol_speaker in the settings. I appreciate any help.

Snom PA1+ too quiet settings

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[–] Chropera@alien.top 1 points 1 year ago

Headset/headphones amplifier levels might vary. You might need external preamplifier. Maybe some cheap LM386 module. Alternatively you can try using speaker ouput as audio source, this might need audio transformer though, class-D audio amplifier in PA-1 is probably full-bridge.