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Old 6th August 2013, 04:01 PM   #1
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Default Class D for Zaph SR71


I am planning on building the zaph SR71 for my apartment (the room is approx. 4 m x 5 m) and I am looking for an amp to go along with it.

I'd like to try a class D amp but I am not able to choose alone between the existing boards. So far, I am stuck between those three amps :

ucd180 from Hypex
TA3020 v3b from Connexelectronic
IRS2092 from Connexelectronic (then again I don't know what to choose between the CxD250, the CxD300, the IRS2092 Modular amplifier, ...)

Anyone can advise me on the amp to choose ?
Feel free to propose something not listed above
Please note that my budget is around 500 $ - 350 € for two channels boards and a psu.

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Old 9th August 2013, 12:45 PM   #2
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Old 9th August 2013, 02:03 PM   #3
luka is offline luka  Slovenia
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ucd would I guess be the most +1 amp of all listed
myself I would go for 3020, then ucd (because of less power and high price) and IRS as last (but very cheap)

I have both used IRS as 3020, I like 3020 more then IRS, both are great amps
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Old 11th August 2013, 08:21 AM   #4
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Thanks for your input !

I was myself leaning toward this one. UCD seems great but a little bit expensive in comparison with connexlectronic boards.
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Old 14th August 2013, 09:18 AM   #5
Juhazi is offline Juhazi  Finland
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How about using B&O ICEpower 50ASX2 or 125ASX2 modules from ebay. You need also the spesific connectors, but one module/speaker is spot-on! AC transformer onboard, only AC switch, casing and connectors to make - too easy?
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Old 14th August 2013, 09:42 AM   #6
AP2 is offline AP2  Italy
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Have a look at Amp F3 AudioPower. amplifier is a well-studied for the audiophile and is complete, only three connectors to listen.
Of course, I have cooperation with this company, but my advice is dispassionate, it is an excellent product, well done on offer at 50% of real value... if available.

Last edited by AP2; 14th August 2013 at 09:48 AM.
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Old 14th August 2013, 04:30 PM   #7
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I've got an Icepower 125ASX2 connected to my SR71's.
Great low end but a bit harsh on the highs. I plan on modifying the stock Xover this autumn as per the suggestion by the designer.
But overall i'm very pleased.
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Old 18th August 2013, 11:58 AM   #8
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Thanks for your answers.
Finally I went for the TA3020 v3b with a SMPS.

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