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Old 19th November 2011, 03:09 AM   #1
john65b is offline john65b  United States
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Default 41hz.com Amp5 and Amp2 Kits

Hey all,

Just cleaning out some old boxes and found two 41hz kits I bought years ago that were thought to be long lost in a move.

Amp5 - brand new, all parts still in packages. PCB says Rev 1. They sell new at $80. $50 will take it shipped CONUS.

Amp2 - Partially complete - bought from a gentleman on this site years ago and never got to building it. Both chips are installed / soldered onto pcb board. All parts are included, but cannot be sure as I never opened the bag. Instructions are also included. PCB says Amp2 Rev 1. These sell new for $110, so how about $65 shipped CONUS?

Pics if someone asks...
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Last edited by john65b; 19th November 2011 at 03:17 AM.
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Old 24th November 2011, 12:51 AM   #2
john65b is offline john65b  United States
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How about $100 for both Kits?
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Old 24th November 2011, 12:35 PM   #3
john65b is offline john65b  United States
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Amp2 spoken for...Amp 5 still available.
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Old 2nd December 2011, 11:51 AM   #4
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Bump...
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Old 14th December 2011, 02:29 PM   #5
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Bump
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Old 23rd December 2011, 10:41 PM   #6
john65b is offline john65b  United States
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Bumpers - BOTH Amp 5 and Amp 2 kits still available.
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Old 24th December 2011, 03:57 AM   #7
john65b is offline john65b  United States
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Default Pics

As requested - some pics
Attached Images
File Type: jpg P1010017.JPG (660.4 KB, 662 views)
File Type: jpg P1010020.JPG (696.7 KB, 620 views)
File Type: jpg P1010018.JPG (680.2 KB, 592 views)
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Old 27th December 2011, 02:27 AM   #8
mikje is offline mikje  United States
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John,
I see on the 41Hz website that the Amp5 has its own PS on-board. Do you know what size transformer this would need? I am interested, depending how much more it would cost to make a fully operational amp.
Thanks,
Mike
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Old 27th December 2011, 12:33 PM   #9
john65b is offline john65b  United States
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Mike, are you running 4 ohm or 8 ohm speakers?

For 4 ohms, stay lower on voltage - around 18V secondaries, while 8 ohm stay around 24v secondaries. VA rating should be around 250 - 300. I may have one or two trannies...I could throw together a package deal. I don't remember if this version had the onboard PS caps/rectifier...I will check, but I think it does...

Edit - yes, it does have the onboard PS.
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Last edited by john65b; 27th December 2011 at 12:45 PM.
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Old 27th December 2011, 04:03 PM   #10
mikje is offline mikje  United States
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John,
I have a 21 volt transformer (21-0-21) and I know I have another CT transformer in my pile of e-parts, too. so... you can consider the Amp5 sold. You have a PM.
Thanks,
Mike
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