New Sure IRS2092 IRFI4020H part # AA-AB32291 - diyAudio
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Old 2nd January 2012, 12:14 AM   #1
HiroPro is offline HiroPro  Canada
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Default New Sure IRS2092 IRFI4020H part # AA-AB32291

Dunno if anyone noticed but Sure Electronics has a new IRS2092 based amp. It's a 4020H design and is best for 8ohm loads.

I'm interested in a 4019H design because I'm concerned about loads at 4 ohm and I know the 4019H performs better in this regard. Also it's easier for me to source a 48V PSU than a 64V one.

Sure do you intend to release a variant using the 4019H MOSFET? I've heard from IRS2092 users that the 4019H also sounds better even though you have less power.

Also is that pot for Self-oscillating frequency or input gain? I would assume being two it's input gain... what is the switching frequency?

Click the image to open in full size.

Sure Electronics IRS2092/4020H AA-AB32291 Amp

Last edited by HiroPro; 2nd January 2012 at 12:25 AM.
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Old 2nd January 2012, 12:17 AM   #2
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You could buy one and swap the mosfets for 4019s.
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Old 2nd January 2012, 12:52 AM   #3
HiroPro is offline HiroPro  Canada
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I'm just a hobbyist and hack/layman and I don't have a proper lab with a scope. I would also have to change values on certain parts no? IE protection etc. I have the IR reference design sheets but I don't have schematic for this board. For 4R 4019H what other parts/values would I need to change?

Also the input stage has a lot less parts than the L15D of ljm's. Connexelectronics also has an IR amp and it looks like it has more MOSFETS in it's design and the 2092 is in a DIP. Has anyone done a comparative review on the IR2092 based amp modules available?

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Old 2nd January 2012, 12:55 AM   #4
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It should be ok to just swap the mosfets.

I have used 4019's with 10r gate resistors and it worked fine.

There are loads of irs2092 based pcbs on ebay.
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Old 2nd January 2012, 01:58 AM   #5
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Quote:
Originally Posted by HiroPro View Post
Dunno if anyone noticed but Sure Electronics has a new IRS2092 based amp. It's a 4020H design and is best for 8ohm loads.
]

Why not get in touch with them and see if they will do special one for you ?
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Old 3rd January 2012, 07:06 AM   #6
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The link didn't work for me but I found it in their ebay store

2 Channel 250Watt Class D Audio Amplifier Board - IRS2092 | eBay

They don't give a lot of confidence in the sound quality:

"... it can be used in many ampplications like Background Music Systems."
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Old 3rd January 2012, 10:50 PM   #7
HiroPro is offline HiroPro  Canada
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LOL

LOST IN TRANSLATION

I wish ljm_ljm followed the IR reference for protection circuits. Other than that I'm mostly leaning to L15D due to the better grounding I can do with it and ability to have odd channel counts in chassis. I want 4019 because my speakers will be 4ohm rated. Hasn't anyone really compared 4020 and 4019 MOSFETS driving 4ohm speakers? All the engineers I've spoke with who have worked with IRS2092 feel 4019 is better for 4R.

Opinions?

Last edited by HiroPro; 3rd January 2012 at 10:53 PM.
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Old 3rd January 2012, 11:55 PM   #8
HiroPro is offline HiroPro  Canada
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I'd love to see a Chinese clone or learnt design from this Teach/Essoteric I-03 ($12,000) receiver's IRS2092 module. It's a 3 parallel push-pull 6 MOSFET design.

Click the image to open in full size.<-- look at the tiny heatsinkage on the 4020Hs !!!

Click the image to open in full size.

It has six MOSFETS and a nice looking custom solid core inductor. Is that device to the left of it another smaller inductor? Teac should sell those modules like B&O does ICE if it's decent enough. It's the first "high end" design house IRS2092 design I know of.

Last edited by HiroPro; 4th January 2012 at 12:09 AM.
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Old 11th June 2012, 04:29 AM   #9
redjr is offline redjr  United States
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I just purchased this same amp module (Sure IRS2092). I intend to power it so that I get the maximum output of 100wpc into 8 ohms. My question is; Can I build a simple, well filtered linear PSU that will supply ~56VDC/rail to power this thing? Or, do Class D amps need to use a SMPS?
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Old 13th June 2012, 08:34 AM   #10
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Quote:
Originally Posted by HiroPro View Post
I'd love to see a Chinese clone or learnt design from this Teach/Essoteric I-03 ($12,000) receiver's IRS2092 module. It's a 3 parallel push-pull 6 MOSFET design.

Click the image to open in full size.<-- look at the tiny heatsinkage on the 4020Hs !!!

Click the image to open in full size.

It has six MOSFETS and a nice looking custom solid core inductor. Is that device to the left of it another smaller inductor? Teac should sell those modules like B&O does ICE if it's decent enough. It's the first "high end" design house IRS2092 design I know of.
300W channel 8 Ohms... just 8000 mmmm!
note the truly masive linear power supply
seems very High End...
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