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Class D Switching Power Amplifiers and Power D/A conversion

Sure TK2050 Bass
Sure TK2050 Bass
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Old 9th May 2012, 09:25 PM   #1
snoopy33 is offline snoopy33  Ajman
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Join Date: Apr 2009
Default Sure TK2050 Bass

First my setup:

Sure 2x Tk2050 revision #2 (1st model with fan, silver power capacitors)
- +ve diodes removed
- input capacitors upgraded

Tannoy 636 Speakers (44Hz-30KHz +-/3db)
Meanwell 350W power supply at 27v


Sound is simply stunning, utterly brilliant BUT there is a lack of bass around the 100-200Hz where the amplifier simply doesn't hit with authority. It's not my speakers. My brother has the same setup but with Tannoy 607's and has the same problem.

I contacted Sure to see if the new revision helps but they said it sounds just the same.

But do all TK2050's have this issue?
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Old 14th May 2012, 08:29 AM   #2
samadhi is offline samadhi
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Join Date: Apr 2012
Location: Sydney
I experienced the same thing with my Dayton DTA-100A which uses TK2050.

The sound is very good but bass performance dropped substantially when switching from my SS amp. Better everywhere else though.
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Old 14th May 2012, 11:18 AM   #3
Saturnus is offline Saturnus  Denmark
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Join Date: Jun 2005
Location: Copenhagen, Denmark
Bass performance depends almost entirely on the output filter coils. Most commercially available TK2050 (or really TC2000 controller chip) based amps have inadequate output filter coils because they are very low cost designs and good filter coils does actually cost a lot of money leading to the assumption by many that the TK2050 can't produce good bass.

Second problem is that most people run them on cheap SMPS that aren't able to provide the current rise times that are needed for peak output. Running a TK2050 on batteries with a capacitor bank makes a huge difference in bass performance.

Last edited by Saturnus; 14th May 2012 at 11:47 AM.
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