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Old 1st October 2006, 01:59 PM   #1
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Default 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.
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Old 3rd October 2006, 11:19 AM   #2
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No one can help me out with this?
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Old 3rd October 2006, 12:02 PM   #3
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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.
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Old 3rd October 2006, 12:58 PM   #4
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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
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Old 3rd October 2006, 04:09 PM   #5
djQUAN is offline djQUAN  Philippines
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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.
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Old 7th October 2006, 07:08 PM   #6
ssanmor is offline ssanmor  Spain
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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.
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Old 8th October 2006, 08:51 PM   #7
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Ok, thanks for taking your time. I will check this options.
Miha
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