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SOLVED : X3600H and Audiosource AMP100

930 Views 4 Replies 3 Participants Last post by  gurutrev
I got an external amp off FB marketplace, was running well when I tested it. Today I hooked it up with the AVR for Zone 2 Pre-Out, the volume knob of the amp is set as 50%, Zone 2 volume level is set as "Variable". Auto/Normal switch is set to Normal on the Amp

I am playing Spotify/TuneIn in Zone II via HEOS

I am facing these two issues

1) the volume is erratic - on HEOS app if the sound drops below 50, there is no sound from the speaker, when I increase above 50 it is playing, but that sound level is a little higher than moderate - there is no variable sound between "No Sound" to the "minimum" volume level I am hearing. I am using volume slider as well as phone buttons for volume control but same case with both, either no sound or the minimum volume that I get is a little higher than I would wish.

2) Sound is clipping intermittently, randomly at times and then sometimes there is no sound unless I crank the volume up.

I have not had any experiences with External Amps so wanted to check if I am doing anything wrong.

EDIT : Solved - after searching some more I found this thread on AVS - AudioSource AMP100VS help while it refers to AMP100VS, I have the older model called AMP100 - I figured that I had hooked it up to incorrect Line IN (LINE IN 1 - which is INTERRUPT instead of LINE IN 2 which is MAIN) - thanks for the help.
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Clipping? How powerful is the amp, and what are the speakers rated for?
Clipping? How powerful is the amp, and what are the speakers rated for?
Amp : 50 watts per channel into 8 ohms (10-30,000 Hz) at 0.2% THD with 2 channels driven
Polk S55 - 8 Ohms, 90 db, 20-200 W
If the amp is turned on, rather than set to automatically turn on with an input signal, it appears that you may have a hardware problem.

You could test the amp by connecting it to a different set of pre-outs. I believe that all of the preouts of the defined speaker channels are active all the time.
If the amp is turned on, rather than set to automatically turn on with an input signal, it appears that you may have a hardware problem.
I had tested it before buying, and there was no issue - I will try different inputs (other than Spotify/TuneIn)

You could test the amp by connecting it to a different set of pre-outs. I believe that all of the preouts of the defined speaker channels are active all the time.
Wil try this too.
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