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My Leach Amp Clone (LEACH 150)
My Leach Amp Clone (LEACH 150)
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Old 6th July 2007, 09:16 AM   #11
panson_hk is offline panson_hk  Hong Kong
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jaycee, thanks for your correction.
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Old 7th July 2007, 03:29 AM   #12
Bonsai is offline Bonsai  Europe
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what are you using to do your measuements panson? Are you using a sound card?
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Old 7th July 2007, 02:18 PM   #13
destroyer X is offline destroyer X  Brazil
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Default Panson...can you provide me, please, the schematic values?


I want to keep this one in my computer...i have some ideas related modified Leach units.

Send me directly if you cannot post here:

panzertoo@yahoo.com

Thanks in advance.

regards,

Carlos
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Old 7th July 2007, 03:27 PM   #14
panson_hk is offline panson_hk  Hong Kong
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Hi Bonsai,

I use Audio Precision System One. It is a PC controlled audio analyzer. You can find its info from www.ap.com

Hi Carlos,

The schematic and BOM are available from

http://www.diyzone.net/images2/LEACH1006SCH-1.pdf
http://www.diyzone.net/images2/LEACH1006BOM.XLS

Let us know your idea.
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Old 7th July 2007, 04:28 PM   #15
destroyer X is offline destroyer X  Brazil
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Default Already downloaded..thank you Panson


Good luck with your leach!

regards,

Carlos
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Old 7th July 2007, 06:30 PM   #16
zerohead_ak47 is offline zerohead_ak47  Turkey
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Default Re: My Leach Amp Clone (LEACH 150)

Quote:
Originally posted by panson_hk
I am finishing my LEACH 150 amp. It is a kit available from DIYZONE in Taiwan. The schematic in pdf can be download from http://www.diyzone.net/images2/LEACH1006SCH-1.pdf. The amp is constructured in mono-block fashion. Each channel has a big toroidal transformer capable of delivering 150 WRMS output.

The figure shows you the assembled PCB and transformers. I will measure the amp using AP System One. I will follow the measurement procedures used in Stereophile equipment review.

Will this clone perform as good as the original LEACH. Some measured data are available from Prof. Leach web site.

The page cannot be found
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Old 8th July 2007, 08:33 AM   #17
Bonsai is offline Bonsai  Europe
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Panson, can you do a distortion vs frequency analysis with your ap system - typically at 1W or 10W out?
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Old 8th July 2007, 10:44 AM   #18
cyril_hk is offline cyril_hk  Hong Kong
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Default those transformers looking good with your great amp...

Hi Panson where do you get your transformers, seem likes some kind of low profile version. Looks really great!
Anyway, I just finished mine right early of May, no current limiter too, with all home made PCBs.
http://hk.geocities.com/cyrilwoo/

Cheers
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Old 8th July 2007, 11:38 AM   #19
AndrewT is offline AndrewT  Scotland
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Hi Zero & Panson,
the link does not work because this site adds a "." to the address.
The poster did not bother to check that his link worked (bad boy).
See post6.

Due to his laziness/oversight your work around is to right click, copy, paste, delete the extra "." at the end of PDF and go.
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Old 8th July 2007, 11:27 PM   #20
panson_hk is offline panson_hk  Hong Kong
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Quote:
Originally posted by Bonsai
Panson, can you do a distortion vs frequency analysis with your ap system - typically at 1W or 10W out?
Hi, I can do later. Here is 50 W, 8 Ohm THD vs freq with different bandwidths.
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File Type: jpg 50 w thd vs freq 8 ohm.jpg (94.2 KB, 1449 views)
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