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Old 30th June 2015, 03:19 PM   #1
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Default Topping TP21 sounds odd

I own the original Sonic Impact amp, the Dayton equivalent, the DTA-100 and the Topping TP21. The Topping has a 'cupped' sound on vocals the others don't. Has anyone else experienced this?

TIA
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Old 30th June 2015, 06:15 PM   #2
xrk971 is online now xrk971  United States
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What speaker is making the cupped sound (basically muffled HF's)? Is it a singular full range or a multiway with a XO? I have heard a cupped sound from my active 3-way once and it was the HF channel's inductor overheating (bad amp) causing dramatic reduction in power delivered to the tweeter. A bad inductor or cheap output cap on the LC filter can also saturate and cause significant HF power to drop making the cupped sound.
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Old 30th June 2015, 07:03 PM   #3
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The cupped sound is notable in the vocals. It's happening on all of the speakers I've tried - all full / wide range drivers. You know I'm a fullrange fanatic!

It's not terrible, but it's different. I'm wondering if it's because I'm pushing the amp. I think it's less powerful than the others dispite being rated for higher power (except for the DTA-100).
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Old 30th June 2015, 07:42 PM   #4
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Quote:
Originally Posted by Godzilla View Post
The cupped sound is notable in the vocals. It's happening on all of the speakers I've tried - all full / wide range drivers. You know I'm a fullrange fanatic!

It's not terrible, but it's different. I'm wondering if it's because I'm pushing the amp. I think it's less powerful than the others dispite being rated for higher power (except for the DTA-100).
Have you checked the polarity on right/left? Try swapping the polarity on one side and see if it improves? If it's wrong it sounds 'hollow' and fatiguing - just does not sound right.
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