My Leach Amp Clone (LEACH 150) - Page 2

panson_hk · 6th July 2007, 08:16 AM

jaycee, thanks for your correction.

Bonsai · 7th July 2007, 02:29 AM

what are you using to do your measuements panson? Are you using a sound card?

destroyer X · 7th July 2007, 01:18 PM

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

panson_hk · 7th July 2007, 02:27 PM

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.

destroyer X · 7th July 2007, 03:28 PM

Good luck with your leach!

regards,

Carlos

zerohead_ak47 · 7th July 2007, 05:30 PM

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

Bonsai · 8th July 2007, 07:33 AM

Panson, can you do a distortion vs frequency analysis with your ap system - typically at 1W or 10W out?

cyril_hk · 8th July 2007, 09:44 AM

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

AndrewT · 8th July 2007, 10:38 AM

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.

panson_hk · 8th July 2007, 10:27 PM

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.

7th July 2007, 02:29 AM	#12
Bonsai diyAudio Member Join Date: Aug 2006 Location: Taipei, Taiwan	what are you using to do your measuements panson? Are you using a sound card? __________________ bonsai Amplifier Design and Construction for MUSIC! http://hifisonix.com/

7th July 2007, 01:18 PM	#13
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	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 __________________ Audiophoolery; http://www.youtube.com/watch?v=m7ERMu825m4; Dx Super Etching; http://www.youtube.com/watch?v=WED3Bvmxepk

7th July 2007, 03:28 PM	#15
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	Already downloaded..thank you Panson Good luck with your leach! regards, Carlos __________________ Audiophoolery; http://www.youtube.com/watch?v=m7ERMu825m4; Dx Super Etching; http://www.youtube.com/watch?v=WED3Bvmxepk

8th July 2007, 07:33 AM	#17
Bonsai diyAudio Member Join Date: Aug 2006 Location: Taipei, Taiwan	Panson, can you do a distortion vs frequency analysis with your ap system - typically at 1W or 10W out? __________________ bonsai Amplifier Design and Construction for MUSIC! http://hifisonix.com/

8th July 2007, 09:44 AM	#18
cyril_hk diyAudio Member Join Date: Jul 2004 Location: south china	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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6th July 2007, 08:16 AM	#11
panson_hk diyAudio Member Join Date: Aug 2005 Blog Entries: 10	jaycee, thanks for your correction.

7th July 2007, 02:27 PM	#14
panson_hk diyAudio Member Join Date: Aug 2005 Blog Entries: 10	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.

8th July 2007, 10:38 AM	#19
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	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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