Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Group Buys Members group buys

LYNX Power Amplifier Board Group Buy
LYNX Power Amplifier Board Group Buy
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 3rd March 2006, 11:54 AM   #1
fungustchan is offline fungustchan  Singapore
diyAudio Member
 
Join Date: Jun 2004
Location: singapore
Default LYNX Power Amplifier Board Group Buy

Hi,

This is my first post. I hope everything goes well.

I am interested in starting a LYNX amplifier main PCB group buy. Its a sturdy tried and tested class-AB design that seems to perform rather well, even when abused - at least in my tests. It is also rather 'scalable', with the capability to be reconfigured easily for a wide range of power levels - from a small 30watt amplifier(with the driver transistors acting as output transistors) to a 400 watt or more monster. For more details, visit the offical LYNX amplifier page . There are also many informative threads throughout the forum which mention this amplifier.

I am intending to use the gerber file on the page linked above for board production. The boardhouse is a local one (i.e. in Singapore) which only takes, unfortunately, massive production runs in excess of 300 pieces minimum, which is why I started this thread to begin with. Board material would be standard 1.5mm FR4 PCB 1Oz copper with plating and hot-air levelling, green solder mask and white silkscreen.

Estimated price for a 300 board production run using the above parameters works out to be approx SGD$6.00 (USD $3.60) per board, which is an extremely reasonable price in my opinion. Please note that the 'board' just refers to the main pcb, i.e. without main power transistor solder points.

Any comments?

Cheers.
  Reply With Quote
Old 4th March 2006, 06:30 AM   #2
Jan Dupont is offline Jan Dupont  Denmark
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Default fungustchan

Hi,

You may want to hold your horses a week or so, as I will upload a new revised layout with minor corrections
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
  Reply With Quote
Old 4th March 2006, 10:27 AM   #3
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
LYNX Power Amplifier Board Group Buy
Default Re: LYNX Power Amplifier Board Group Buy

Quote:
Originally posted by fungustchan
....Board material would be standard 1.5mm FR4 PCB 1Oz copper with plating and hot-air levelling, green solder mask and white silkscreen.
10 oz copper is 0.35 mm Do you really mean that

2-3 oz is pretty thick.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Group buy: DCT03 DC trap for big toroidal transformers. Sign up for interest HERE. 52 pcb's in order. 31 paid.
  Reply With Quote
Old 4th March 2006, 11:08 AM   #4
richie00boy is offline richie00boy  United Kingdom
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
LYNX Power Amplifier Board Group Buy
Read it again, with your glasses on this time PA
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
  Reply With Quote
Old 4th March 2006, 11:23 AM   #5
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
LYNX Power Amplifier Board Group Buy
Oops but isn't it a good idea to have at least 2 oz. copper?
__________________
/Per-Anders (my first name) or P-A as my friends call me
Group buy: DCT03 DC trap for big toroidal transformers. Sign up for interest HERE. 52 pcb's in order. 31 paid.
  Reply With Quote
Old 7th March 2006, 09:49 PM   #6
bikehorn is offline bikehorn  Canada
diyAudio Member
 
bikehorn's Avatar
 
Join Date: Aug 2004
Location: toronto
i am interested, especially by the high power capability. i had considered a pair of LM4780 gainclones for 120 wpc but all i've read about that SpiKe clipping protection circuitry they've got suggests that they would be less than ideal for my purposes(i.e. loud drunken university parties ). also, i wanted to design and build a monster power supply, which was not really part of the gainclone philosophy.

are you planning on using the basic or extended circuit?
  Reply With Quote

Reply


LYNX Power Amplifier Board Group BuyHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Power Amp PSU Board (for e.g. LYNX Amp) Jan Dupont Group Buys 466 20th May 2017 01:21 PM


New To Site? Need Help?

All times are GMT. The time now is 06:13 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki