Please recommend Class D amp for these PSU

[mga2009]

Hi to you all,

Because I made a couple of buying mistakes, I now have 2 power supplies that I want to use for something. So, what class D amplifier can I use with these power supplies? I don't care the wattage, mono or stereo, nothing... just that it is sort of cheap (under USD$40ish) and that it sounds good enough.

The power supplies are these:

1-. Meanwell LRS-200-48
200W single output @48V

2-. 500W +/-45V amplifier dual-voltage PSU audio amp switching power supply board
Bough from this link: 500W +/-45V amplifier dual-voltage PSU audio amp switching power supply board | eBay

For these last PSU I think i will try the HypeX UcD180OEM, but other recommendations are welcomed!

Cheers!

 

[Koifarm]

For power supply 1 : WONDOM | STORE

Limit amp to 2 x 100Watt.

For puwer supply 2 : 2 x UCD400

 

[mga2009]

For power supply 1 : WONDOM | STORE

Limit amp to 2 x 100Watt.

For puwer supply 2 : 2 x UCD400

Thanks for your reply!

The Sure AA-AB32313 looks good, but it seems a little overpriced compared to the TPA3255 from 3e-audio (or even the cheap chinese builds).

The UcD400 is way over my budget for now

 

[Victorinox]

45V is not optimal for UCD 400 anyway. Perfect for UCD 180. Do that or sell it to me for $20. Or I can sell you UCD 180 HG with power boards. I have a pair I don’t see myself using. Genuine bought from hypex.

 

[mga2009]

45V is not optimal for UCD 400 anyway. Perfect for UCD 180. Do that or sell it to me for $20.

According to UcD180OEM spec sheet, the typical voltage supplied is 45v with a max of 50v (shuts down at 56v).

Yep, the UcD400 requieres more voltage for typical usage, and the minimum is 45v (with a reduced performance).

How much for the UcD180 with the PS?

 

[Victorinox]

Imho tpa 3255 is garbage. From whoever implemented it. I’ve heard 5 different versions and disliked all 5.

 

[mga2009]

Imho tpa 3255 is garbage. From whoever implemented it. I’ve heard 5 different versions and disliked all 5.

So you would recommend to steer away from the TPA3255?

Also, I think the ICEpower 250A works with a single output 48v PSU... so I might build a SW mono amp...

 

[Victorinox]

According to UcD180OEM spec sheet, the typical voltage supplied is 45v with a max of 50v (shuts down at 56v).

Yep, the UcD400 requieres more voltage for typical usage, and the minimum is 45v (with a reduced performance).

How much for the UcD180 with the PS?

I made a few dozens UCD based amplifiers. 45 for 400 is way low. If you want to talk prices for ucd180 send me a message.

 

[Victorinox]

So you would recommend to steer away from the TPA3255?



Also, I think the ICEpower 250A works with a single output 48v PSU... so I might build a SW mono amp...

I dislike 3255. You mileage may vary. Imho hypex Ucd is better than ice. Noire without doubt. Modules I have currently sold by hypex for 100 Euro a piece plus shipping. Message me your address I’ll give you accurate quote.

 

[Koifarm]

UCD400oem delivers same power as UCD180oem at +/- 45v but has lower output resistance and better bas controll. It is only €10,- more expensive.

Sure AA-AB32313 is best value for the money. There is a complete thread about it in this forum.

 

[mga2009]

I dislike 3255. You mileage may vary. Imho hypex Ucd is better than ice. Noire without doubt. Modules I have currently sold by hypex for 100 Euro a piece plus shipping. Message me your address I’ll give you accurate quote.

The Meanwell PSU cant run the HypeX, because it's single output, thats why I thought it might work with the ICE 250A, as I think it needs single 48v line.

For the dual +/-45 PSU I have, yes I will try the UcD180OEM from HypeX.- as it is the cheapest I can get here locally (around USD$30 ea).

 

[xrk971]

Imho tpa 3255 is garbage. From whoever implemented it. I’ve heard 5 different versions and disliked all 5.

The eBay/Aliexpress blue TPA3255 circa $55 to $60 has layout errors. Don't judge the chip based on flawed implementations.

Implementations by folks on DIYA, seem to fare better. DrMorde, 3E, and myself included. It's one of the best sounding Class D amps I have heard. Very quiet and very powerful. Even has a nice harmonic distortion profile.

 

[Victorinox]

The Meanwell PSU cant run the HypeX, because it's single output, thats why I thought it might work with the ICE 250A, as I think it needs single 48v line.

For the dual +/-45 PSU I have, yes I will try the UcD180OEM from HypeX.- as it is the cheapest I can get here locally (around USD$30 ea).

$30 a piece? Where? I’ll tAke 100.

 

[Victorinox]

The eBay/Aliexpress blue TPA3255 circa $55 to $60 has layout errors. Don't judge the chip based on flawed implementations.



Implementations by folks on DIYA, seem to fare better. DrMorde, 3E, and myself included. It's one of the best sounding Class D amps I have heard. Very quiet and very powerful. Even has a nice harmonic distortion profile.

I’ll take irs 2092 based over 3255. Imho 3251 sounds better. I lost interest in tpa chips then. Even evaluation board from manufacturer sounded meh.

 

[mga2009]

$30 a piece? Where? I’ll tAke 100.

I can get them locally, but here you have:

Hypex UCD180LP OEM amp module--used modules--tested and verified working units | eBay

It's the UcD180LP thou.

 

[Koifarm]

ucd180lp has no preamp and needs 4,5Vrms input. For normal use you need to ad 4,5 times preamp

 

[Victorinox]

ucd180lp has no preamp and needs 4,5Vrms input. For normal use you need to ad 4,5 times preamp

Yeah what he said. They also has no t shaped heatsink. Voltage stabilization and at least twice as cheap Those pins pita to deal with. Good luck.

 

[mga2009]

ucd180lp has no preamp and needs 4,5Vrms input. For normal use you need to ad 4,5 times preamp

Yeah what he said. They also has no t shaped heatsink. Voltage stabilization and at least twice as cheap Those pins pita to deal with. Good luck.

Any suggestion for a cheap pre amp for this amp?? Would a single ended to balanced converter with gain be enough??

Would this be enough?
Unbalanced to balanced driver board w/ buffer input low distortion 0.006% PCB ! | eBay

 

[drMordor]

Imho tpa 3255 is garbage. From whoever implemented it. I’ve heard 5 different versions and disliked all 5.

Every man to his taste. : D
My TPA3251 amp very fine sound.

 

[mga2009]

Every man to his taste. : D
My TPA3251 amp very fine sound.

The TPA3251 can run in a single 48v output?