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Old 1st March 2008, 06:36 AM   #1
Jan Dupont is offline Jan Dupont  Denmark
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Default Official LYNX Power Amp builder’s thread

The original Group Buy thread can be found here: LYNX Group Buy

I would like to point out that my time is limited and that I have NO possibility nor intend to answer questions like “How will the LYNX Amp sound with xx transistors in the VAS” or “Can I use xx Opamp instead?”

Basic information can be found in LYNX Amp “Quick Assembly Guide” here LYNX v3.0 Quick Assembly Guide and I’ll notify you all here each time I up update it.
The Guide contains basic circuit description, BOM (Bill Of Material) and explanations how you calculate some of the resistor values etc.

Please remember that this is a DIY project.

Happy building.

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Old 1st March 2008, 07:31 AM   #2
taj is offline taj  Canada
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Good stuff Jan. I expect this will be a popular DIY project. Your design work is exceptional.

..Todd
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Old 1st March 2008, 12:25 PM   #3
tinitus is offline tinitus  Europe
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Hopefully relevant questions

Picture of board clearly shows 6 x 2watt resistors

So which of 122-125 should be 2watt ?


Another thing

I want to use quality resistors and have trouble finding some of the values
R115 should be 210ohm...will it be ok to use either 200ohm or 220ohm

I take it that 0.5watt instead of 0.6watt will be ok
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Old 1st March 2008, 01:12 PM   #4
Jan Dupont is offline Jan Dupont  Denmark
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tinitus;

You are right. It could have been more specified, however at the bottom on page three, it states "How to calculate R122 and R123 (2W Zener resistors).....

No problems in using either 200R or 220R for R115.

0.5W resistors should be fine,
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Old 1st March 2008, 04:14 PM   #5
Agus Widarto is offline Agus Widarto  Indonesia
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Hai friends from indonesia anyone want to build lynx V3 ? I just want to say I want to build that but i can not join with group buy because i dont have paypal etc,,, so sadnees

let's make indonesian group buy ! he he he

regards
agus
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Old 1st March 2008, 04:46 PM   #6
Jan Dupont is offline Jan Dupont  Denmark
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Updated Quick Assembly Guide

More information on components used and schematic plus PCB layout added.
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Old 1st March 2008, 05:33 PM   #7
Landoctor is offline Landoctor  United States
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Thumbs up Nice Job!

Jan,
That is one of the most professional looking build guides I have seen for any DIY project!
Thanks for taking the time to put that together for us. It should make building this amplifier easy for just about anyone.

Thanks,
Donovan
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Old 1st March 2008, 05:38 PM   #8
Jan Dupont is offline Jan Dupont  Denmark
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Thanks Donavan
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Old 2nd March 2008, 04:59 PM   #9
marcus7601 is offline marcus7601  Sweden
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Hi, and thanks for the groupbuy.

Is there a clear disadvantage to use MJE15030 instead of MJE15032?
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Old 2nd March 2008, 05:25 PM   #10
Jan Dupont is offline Jan Dupont  Denmark
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Only that it's recommended that you keep your Rail Voltages below +/-60 Volts DC
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