Need to make PA power amp

ATP · 9th February 2006, 01:59 PM

Am ATP from Thailand

Need to make PA power amp but is not have idae.
- Lokking to Crest audio and QSC around 1000w
- PCB layout and Schematic

Thank

AndrewT · 9th February 2006, 07:25 PM

Hi,
look up quasi.
or buy one from Workhorse.

Workhorse · 10th February 2006, 01:53 AM

Hi ATP,

Do you know ALABPRO....they copy QSC, Lab Gruppen amps www.alabpro.com They are also in Thailand....

head_spaz · 10th February 2006, 02:01 AM

Link is busticated.
Try this one... http://www.alab-pro.com/

quasi · 10th February 2006, 02:41 AM

Quote:

Originally posted by AndrewT
Hi,
look up quasi.
or buy one from Workhorse.

Mine won't go to 1000w but the layout here will get to within 3dB(into 4 ohms) http://www.diyaudio.com/forums/showt...022#post797022 read posts #301 and #302.

Look at this chart http://www.diyaudio.com/forums/showt...932#post794932 read post #285

The schematic is here;
http://www.diyaudio.com/forums/showt...662#post818662 read post #325

If you are patient this amp is being developed and will be ready in about 2 months or so. http://www.diyaudio.com/forums/showt...251#post835251

Note; this will be an ambitious project, involving high voltages and very large power supplies. Unless you have many of the parts already and some experience, a unit from Workhorse would be a good idea.

Cheers & Good Luck

ATP · 10th February 2006, 06:38 AM

Thank.
But me need to DIY power amp.

psychosteve · 11th February 2006, 02:46 PM

i dont know if its any good to you but i use a a bridged pair of k8060 velleman kit amps to get about 220 / 250watts rms.

at around 15 / 20 gbp (£) for board, all components exept heatsink and transformer its gotta be worth a look.

when i bridged mine i left off the diodes and used a single rectifier 300va transformer and 62000uf smoothing caps, wired to the on board smoothing caps so that the power share is equal for bridge.

at the input i ran a simpl tl072 twin op amp one side to invert, the other as a buffer to ensure ballanced drive.

with 4 amps, ie,, twin bridge for stereo, that is getting on for 1000wats, or 2 x 250w rms.

hope this is of interest, if not just ignore me, most ppl do..lol.. steve

psychosteve · 11th February 2006, 02:56 PM

and if you realy want to do a total diy buy one and then redesign and reproduce to your hearts content..

or just copy it, but that is against copy rite law. lol..

steve

9th February 2006, 01:59 PM	#1
ATP diyAudio Member Join Date: Dec 2005 Location: pattaya	Need to make PA power amp Am ATP from Thailand Need to make PA power amp but is not have idae. - Lokking to Crest audio and QSC around 1000w - PCB layout and Schematic Thank

10th February 2006, 02:01 AM	#4
head_spaz diyAudio Member Join Date: Mar 2004 Location: Arkansas	Link is busticated. Try this one... http://www.alab-pro.com/ __________________ Writing is good exercize for the texticles!

11th February 2006, 02:46 PM	#7
psychosteve diyAudio Member Join Date: Sep 2004 Location: coventry england	i dont know if its any good to you but i use a a bridged pair of k8060 velleman kit amps to get about 220 / 250watts rms. at around 15 / 20 gbp (£) for board, all components exept heatsink and transformer its gotta be worth a look. when i bridged mine i left off the diodes and used a single rectifier 300va transformer and 62000uf smoothing caps, wired to the on board smoothing caps so that the power share is equal for bridge. at the input i ran a simpl tl072 twin op amp one side to invert, the other as a buffer to ensure ballanced drive. with 4 amps, ie,, twin bridge for stereo, that is getting on for 1000wats, or 2 x 250w rms. hope this is of interest, if not just ignore me, most ppl do..lol.. steve __________________ you all laugh because im different, i laugh because youre all the same.. ..

11th February 2006, 02:56 PM	#8
psychosteve diyAudio Member Join Date: Sep 2004 Location: coventry england	and if you realy want to do a total diy buy one and then redesign and reproduce to your hearts content.. or just copy it, but that is against copy rite law. lol.. steve __________________ you all laugh because im different, i laugh because youre all the same.. ..

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9th February 2006, 07:25 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, look up quasi. or buy one from Workhorse. __________________ regards Andrew T.

10th February 2006, 01:53 AM	#3
Workhorse diyAudio Member Join Date: Dec 2004	Hi ATP, Do you know ALABPRO....they copy QSC, Lab Gruppen amps www.alabpro.com They are also in Thailand.... __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance

10th February 2006, 06:38 AM	#6
ATP diyAudio Member Join Date: Dec 2005 Location: pattaya	Thank. But me need to DIY power amp.

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