Hi amigos,
I wonder if someone has already tested this HYY-01 class D amplifier, double Mono board.
This is a 2X250W class D amplifier based on IRS2092 / IRFB4227.
I read some really good opinions on the web about it but I would like to know a bit more.
- what about speakers protection ? Anti Pop @ startup ?
- what is it worth compared to the TPA3255 ?
etc
Maybe someone can help with these pictures :
I wonder if someone has already tested this HYY-01 class D amplifier, double Mono board.
This is a 2X250W class D amplifier based on IRS2092 / IRFB4227.
I read some really good opinions on the web about it but I would like to know a bit more.
- what about speakers protection ? Anti Pop @ startup ?
- what is it worth compared to the TPA3255 ?
etc
Maybe someone can help with these pictures :
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given the answer, I imagine you tested both ?
I have indeed. Many iterations of both.
So what about speakers protection / antipop on the HYY 01?
Can you share your detailed opinion ?
The 2092 does have some protection built in like over current.
However if a mosfet blows you can end up with power rail voltage on your speaker. It shouldnt pop on power up or down.
I designed my own 2092 amp and on power down it would make a loud siren noise for a second then an almighty thump through the speakers !
I asked IR about it and they said I had used too much smoothing capacitance.
I had to add a reset circuit that reset 2092 on power down.
Thanks for this first feedback )
If you had to compare it to the TPA3255 (TI evaluation Board or other quality board). What would you say ?
I havent heard the TPA.
However the 2092 based amps I have designed all sounded very good.
The 2092 amps can be very high power compared to the chip amps.
One of mine was 2000 watts.
I can only judge from your photos as I do not have one of those.
I see a relay (blue) and it is most likely for delayed connection of the speaker and eventually offering some protection in case of faults. Which ones I cannot say.
On the sound quality, I would put a lot of confidence in Nigel's opinion.
I see a relay (blue) and it is most likely for delayed connection of the speaker and eventually offering some protection in case of faults. Which ones I cannot say.
On the sound quality, I would put a lot of confidence in Nigel's opinion.
Thanks,
Another question regarding those IRS2092 Class D amplifiers :
Can we turn on the amplifier without connecting the speakers ? Any risk ?
I made a test this morning with a Sure / Wodom IRS2092 board... and the board has simpy burnt with the appropriate PSU. (SMPS 48V / 500W)
WONDOM AA-AB32321 IRS2092 Module amplificateur stereo class D 2x125W 8Ohms - Audiophonics
Another question regarding those IRS2092 Class D amplifiers :
Can we turn on the amplifier without connecting the speakers ? Any risk ?
I made a test this morning with a Sure / Wodom IRS2092 board... and the board has simpy burnt with the appropriate PSU. (SMPS 48V / 500W)
WONDOM AA-AB32321 IRS2092 Module amplificateur stereo class D 2x125W 8Ohms - Audiophonics
That board required dual rail PSU not 48V single rail one. WONDOM | STORE
WONDOM | STORE Question is how you connected single 48V power to it to burn it. I used these and 2x250W versions at least a dozen of times. havent managed to burn a single one. with or withput load connected.
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Many thanks for this response.
Hummmm... Since I am French, sometimes my English is not perfect. I am sorry again ) Burn was not the appropriate word )
Are you sure it requires a dual rail ?, here what has been suggested to use with this Model WONDOM AA-AB32321 IRS2092 :
SMPS500R Module d'Alimentation a Decoupage 500W / +/-50V - Audiophonics
Spec from official site :
http://store.sure-electronics.com/i...92 AA-AB32321 MidPowerStereoSeries Manual.pdf
Audiophonics recommend it here :
WONDOM AA-AB32321 IRS2092 Module amplificateur stereo class D 2x125W 8Ohms - Audiophonics
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find power connector on amplifier board. Should look like this
See B- G B+ terminals on the right? Power supply should have similar marks. Then take your DMM red lead and touch center terminal of your PSU. black lead on left terminal of your PSU. It should show -47V . Then move red lead to far right terminal it should show + 96V. Lastly move black lead to center terminal. you should get +47V. If all the above is true report back.
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