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TPA3255 - all about DIY, Discussion, Design etc.
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Old 18th November 2019, 02:19 PM   #1531
Kay Pirinha is offline Kay Pirinha  Germany
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Quote:
Originally Posted by rhing View Post
...a Pono Player...

I'm not sure if any of the characters h or r is missing
Best regards!
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Old 18th November 2019, 02:22 PM   #1532
zek is offline zek
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Quote:
Originally Posted by CowCat View Post
The channel imbalance was actually caused by water .... After removing water ...., I confirmed that there is no apparent channel imbalance in my generic TPA3255 amplifier.
Don't place the amplifier in water.

Before the next test, swap the ears.
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Old 18th November 2019, 02:24 PM   #1533
Kay Pirinha is offline Kay Pirinha  Germany
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Quote:
Originally Posted by CowCat View Post
The channel imbalance was actually caused by water trapped in my left ear.
And how did you measure the imbalance at 1 dBv?
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Old 18th November 2019, 03:09 PM   #1534
FauxFrench is offline FauxFrench  France
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I tend to have the same problem sometimes. Anyway, problem solved!
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Old 18th November 2019, 05:37 PM   #1535
STUNTfingers is offline STUNTfingers  United Kingdom
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Quote:
Originally Posted by rhing View Post
Sorry for chiming in a bit late here, but I use a TI TPA3255EVM amp in PBTL mode powered by the Mean Well LRS-350-48 with a pair of KEF LS50s, and this makes an incredible combination. Your KEFs will really sing with this amount of drive. When I powered my KEF LS50s with the TI amp, I was taken back by the level of control I heard. Bass notes were complete and went deeper than I ever thought a small monitor could produce. The treble sweetened up as the amp burned in. If you want, you can have a pair running in BTL mode as mono blocks which will allow the TI amp modules to drive down to 2-4 ohms easily. Youll need proper speaker cables for this combination, and I highly recommend using a loosely twisted pair of Duelund DCA16GA or DCA12GA Tinned Copper wire with bare wire ends.

With the TI amps connected in differential (balanced) mode with a source with volume control and balanced outputs, you will really be blown away with how transparent these amps can be. I connected a Pono Player with the ESS DACs and Ayre-designed analog output section to the TI amp, and it was shockingly awesome. For other sources, I suggest a very good preamp. The Pass DIY B1 with Korg NuTube Triode preamp offers additional gain along with that holographic triode sound signature. Paired with the TI TPA3255EVM amp, it makes a ridiculously budget-friendly high end amplification system that will compete with many high end audio systems.

Thank you for your reply, this is really useful information and very encouraging! I think based on yours and Turbowatch2s reply Im going to go dual mono. Do you or anyone else have any ideas what would sound better, either use the dedicated mono boards from 3eaudio or run two TI TPA3255s in PBTL mode? Forums tend to suggest the latter sounds better but I havent seen this exact question asked.

Thanks
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Old 18th November 2019, 05:46 PM   #1536
STUNTfingers is offline STUNTfingers  United Kingdom
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Oh I meant to add that I’ve been looking at the Topping D50S to use as a DAC and preamp as it has digital volume control and I wanted to move away from the idea of using a volume pot. I’m not sure if this is a good idea or not though.
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Old Yesterday, 04:15 PM   #1537
daniboun is offline daniboun  France
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Hi amigos,

Question... do you think I can connect a SMPS 300RS 28 V directly to this TP3255 Board ?

Click the image to open in full size.

The original one use a toroidal PSU (28V)

Click the image to open in full size.
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Old Yesterday, 07:46 PM   #1538
zek is offline zek
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Looks like this board has rectifier on it and because of that it needs AC power not DC (SMPS out is DC).
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Old Yesterday, 09:08 PM   #1539
daniboun is offline daniboun  France
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Quote:
Originally Posted by zek View Post
Looks like this board has rectifier on it and because of that it needs AC power not DC (SMPS out is DC).
Hummmm thanks....
Could you suggest me any AC Power Supply that should work with it ? (recommended is 28V)
Or any DC AC converter I could find on Amazon ? Or any other cheap solution ?

Last edited by daniboun; Yesterday at 09:29 PM.
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Old Yesterday, 11:33 PM   #1540
zek is offline zek
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The cheapest solution is to find the right transformer.
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