High power professional amp modules or pcb?

rotation · 1st October 2006, 01:59 PM

Hi!
Someone asked me to do a good quality, high power (up to 700w rms), well protected and stable down to 2 ohms amplifier. I would like to get finished modules or at least well teted and known project with pcb available. I prefer d class for this, but it can also be b class.
Searching around i found Hypex, B&O, but they seem to be exopensive if compared to used amps.
I would like to know if it's worth diy and which circuit or module would suit my needs.
Thanks in advance!
Miha

p.s.:I have no info on speakers for now. Only know it will be also used on 2 ohms.

rotation · 3rd October 2006, 11:19 AM

No one can help me out with this?

richie00boy · 3rd October 2006, 12:02 PM

I think that trying to run down to 2 ohms is your problem, it's too low. If you can convince your friend that 4 ohms is good then I would look at UcD700 and ZAPpulse 2.3SE. Coldamp also seem good.

rotation · 3rd October 2006, 12:58 PM

Hmm, PA's are very often demanding power amps capable to run 2ohms. Yes, i checked solutions you mentioned, but they seem to be more expensive in parts than factory made amps. I will suggest QSC amps or something similar. After researche i think diy PA amp is to expensive.
Thanks Miha

djQUAN · 3rd October 2006, 04:09 PM

ESP P68 with enough output transistors can easily do 2 ohms. it doesn't have protection circuitry though.

I have built one that does a little over 500W at 2ohms mono with 5 pairs of output devices. take note this is class B.

ssanmor · 7th October 2006, 07:08 PM

We run our big demonstration PA subwoofer in bridge mode with 2 BP4078. It has 2 8 ohm drivers, but as we connect them in parallel, total is 4 ohm.
So each module sees 2 ohm. With only 2 BP4078 and 1 SPS80 we run it at >1200W with no problem. They just need a bit of forced cooling to run music continuously at that level. So yes, they can run at 2 ohm safely.

rotation · 8th October 2006, 08:51 PM

Ok, thanks for taking your time. I will check this options.
Miha

1st October 2006, 01:59 PM	#1
rotation diyAudio Member Join Date: Oct 2005	High power professional amp modules or pcb? Hi! Someone asked me to do a good quality, high power (up to 700w rms), well protected and stable down to 2 ohms amplifier. I would like to get finished modules or at least well teted and known project with pcb available. I prefer d class for this, but it can also be b class. Searching around i found Hypex, B&O, but they seem to be exopensive if compared to used amps. I would like to know if it's worth diy and which circuit or module would suit my needs. Thanks in advance! Miha p.s.:I have no info on speakers for now. Only know it will be also used on 2 ohms.

3rd October 2006, 12:02 PM	#3
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	I think that trying to run down to 2 ohms is your problem, it's too low. If you can convince your friend that 4 ohms is good then I would look at UcD700 and ZAPpulse 2.3SE. Coldamp also seem good. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Power supply:Universal AC input/ Full range,High Efficiency, and High reliability	hang	Vendor's Bazaar	12	24th July 2009 03:46 AM
Wanted - High Power, High Voltage, Audio Frequency Transformer Manual.	kimbal	Tubes / Valves	4	11th May 2009 08:05 PM
Pro Amps v Kits, High end modules	Nicos	Solid State	57	4th November 2006 02:39 AM
Yamaha 230w 8 ohm professional power amp, cheap as chips	priscared	Swap Meet	14	19th March 2004 12:04 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

3rd October 2006, 11:19 AM	#2
rotation diyAudio Member Join Date: Oct 2005	No one can help me out with this?

3rd October 2006, 12:58 PM	#4
rotation diyAudio Member Join Date: Oct 2005	Hmm, PA's are very often demanding power amps capable to run 2ohms. Yes, i checked solutions you mentioned, but they seem to be more expensive in parts than factory made amps. I will suggest QSC amps or something similar. After researche i think diy PA amp is to expensive. Thanks Miha

3rd October 2006, 04:09 PM	#5
djQUAN diyAudio Member Join Date: May 2004 Location: manila	ESP P68 with enough output transistors can easily do 2 ohms. it doesn't have protection circuitry though. I have built one that does a little over 500W at 2ohms mono with 5 pairs of output devices. take note this is class B.

7th October 2006, 07:08 PM	#6
ssanmor diyAudio Member Join Date: Jan 2002 Location: Madrid	We run our big demonstration PA subwoofer in bridge mode with 2 BP4078. It has 2 8 ohm drivers, but as we connect them in parallel, total is 4 ohm. So each module sees 2 ohm. With only 2 BP4078 and 1 SPS80 we run it at >1200W with no problem. They just need a bit of forced cooling to run music continuously at that level. So yes, they can run at 2 ohm safely.

8th October 2006, 08:51 PM	#7
rotation diyAudio Member Join Date: Oct 2005	Ok, thanks for taking your time. I will check this options. Miha

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)