Please recommend Class D amp for these PSU

mga2009

Member
2015-11-20 10:34 pm
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!
 

mga2009

Member
2015-11-20 10:34 pm
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

Member
2008-01-23 7:54 am
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

Member
2008-01-23 7:54 am
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.
 

mga2009

Member
2015-11-20 10:34 pm
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).
 
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.
 
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.
 
ucd180lp has no preamp and needs 4,5Vrms input. For normal use you need to ad 4,5 times preamp
 

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mga2009

Member
2015-11-20 10:34 pm
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