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Old 11th August 2008, 05:46 PM   #41
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Originally posted by theAnonymous1
I've been playing with the 200ASC modules from YFW and I have to say I'm pleased with my purchase (and glad I got them before the price jumped to $199).
I got four of these... still waiting... glad to hear you were not disapointed.

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Old 11th August 2008, 07:23 PM   #42
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My only disappointment with the modules is the poor thermal design. It would have been nice if they built them in a way the could easily be attached to a heatsink.

They only get slightly warm after playing for awhile, but I haven't pushed them very hard. I can imagine they would heat up a lot more if they were used as a small sub amp that was often pushed to clipping.
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Old 12th August 2008, 01:56 AM   #43
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Maybe for sub amp use they'd be best with a large slow moving fan, like in quiet PCs . .
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Old 12th August 2008, 07:55 AM   #44
Nisbeth is offline Nisbeth  Denmark
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The 200ASCs are used in many commercial speakers/subwoofers without any fans or heatsinks, so if I were you I'd wait a little before I start worrying

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Old 12th August 2008, 12:56 PM   #45
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Originally posted by Nisbeth
The 200ASCs are used in many commercial speakers/subwoofers without any fans or heatsinks, so if I were you I'd wait a little before I start worrying

I didn't say I was worried, I just said it would have been nice if they were built in a way that allowed a heatsink to be attached.

The continuous output power these modules are capable of is a lot less than the devices could handle if properly cooled. The proof of that is in the datasheet
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Old 20th August 2008, 05:34 PM   #46
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Just keep in mind that some of the modules are missing some basic protection circuitry - might or might not matter to you ...

Originally posted by buzz1939
Maybe this is mentioned above but just a reminder, be sure you're clear on whether the modules have any protection against shorts, dc - a little discussion by 2 engineers here (Jack Hidley, formerly of NHT) and here

"I’ve had a lot of experience with the 500A modules and even more with the 500ASP modules. I’ve gained most of experience because of the failure with causes by the lack protection these modules offer, generally caused by customer errors. The only protection the 500A modules offer is under-voltage per B&O; this is why we quit using them on our customers’ product." - EJ Sarmento, Wyred 4 Sound

"I completely agree about the total lack of protection circuitry on the B&O modules. It was very shortsighted of B&O to not include anything and especially dumb to not disclose this for a long time. For both the P2 and P5, we had to build an extra PCB to add all of the normal protection to the amplifier. Shorts, DC, etc. Any power amplifier without these basic protection circuits is just not acceptable." - Jack Hidley, ex NHT
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Old 23rd August 2008, 09:43 PM   #47
gagnou is offline gagnou  Greece
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Anonymous1, I have a question about the central hole of the modules.
Is it for grounding to the case / mains earth?
I bought a pair from the same source but haven't assembled them yet.
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Old 29th August 2008, 06:55 PM   #48
BFNY is offline BFNY  United States
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Originally posted by TNT
Sorry, these modules are only for companies - I was lucky getting hands on a pair.

BR /

You can buy the 1000ASP module from 2 sources - Marchand Electronics,


or this guy


Both sell them for about 500. each, so I would buy from Marchand versus a guy in Taiwan.

FYI, they are blowing out the NHT Power2 for $499. that has 3 B&O modules inside - one 500ASP and 2 500A.
see post 20 -

"The Power2 uses one 500ASP and TWO 500As. The amplifier channel on the 500ASP does nothing. This way both channels have absolutely identical behavior since they use exactly the same amplifier module."

If you buy two Power2s, you have 6 modules.


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Old 30th August 2008, 10:11 AM   #49
Phill is offline Phill  France
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I build a 500A
I doubt on connecting connector JST
the data sheet said something (page 3/16)
and serigraphy said something else
where is the pin 1?
Thanks !

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small handyman
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Old 7th September 2008, 10:13 AM   #50
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Im giving icepower a second chance, bought two 200ACS modules off ebay, i´ll let u know how it goes.
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