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Old 28th October 2007, 08:03 PM   #1
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Default ~700w ampifier

Hi i need a schematic for amplifier ~700w rms at AB class.
Help please.
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Old 28th October 2007, 08:14 PM   #2
Donk is offline Donk  Europe
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IMHO it's worth to buy one instead of DIYing. Cheaper (!) and better.

Best regards,
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Old 28th October 2007, 08:17 PM   #3
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What is the load? 4 ohms? 8 ohms?
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Old 29th October 2007, 02:03 AM   #4
Leolabs is offline Leolabs  Malaysia
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And for what purpose???PA??Hi Fi???
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Old 29th October 2007, 08:45 AM   #5
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Default Ahahaha..... Greeks have those needs... they are warriors by nature...ahahahaha

700 watts is not an amplifier...it is more a weapon!

You can "kill" your neighboor's ears with that thing.... and kill speaker.

Aahhaha.... very common that need when the guy is from Greece.

Nice place.... filled with warriors till the top.

Hey Xazopartalos!..... piece brother!!!

By the way.... this 700 watts... is this a stereo?... say 350 plus 350 watts?..... can this be 700 watts over 4 ohms speakers?


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Old 29th October 2007, 11:27 AM   #6
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Why settle for 700, given the number of bridgeable schematics available for free from PA manufacturers such as Crown ?
A loaded HiFiver can pick the X1000(clony)

(Donk's avatar is more a Honk-Honk quality grade)
It doesn't count how one deals with winning, but how to handle a loss (© DjT)
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Old 29th October 2007, 11:29 AM   #7
quasi is offline quasi  Australia
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Hi Carlos,

nothing like brute power to win a battle, but sometimes cunning plans are required also and the Athenians were good at that.

Xazopartalos, here is a design that will do more than 700 watts into a 4 ohm load. This link takes you to a build by a fellow DIYA constructor of one of my designs.


Yiasas (from another Greek)
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Old 29th October 2007, 11:34 AM   #8
sreten is offline sreten  United Kingdom
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Old 29th October 2007, 04:11 PM   #9
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The drawing need in order to I make amplifier-arm <> ¶
and all this in order to play in a friend which has 300w rms in 10x10 room and playing finish thus in order to drazy. ¶
The amplifier I want it has this force in the 8ΩM and ~700 rms to hifi !!!!!!! <> ¶
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Old 29th October 2007, 04:30 PM   #10
Donk is offline Donk  Europe
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Hi Xazopartalos,

OK, so 700W/8Ohm.
Wow! That's 210Vp-p, meaning about +/-120V rails.
I'd rather build 350W/4Ohm amps with about +/-65V rails and would bridge them.

A much effective solution would be to DIY or buy speakers with better SPL. A 95dB rated spk with a 100W amp kills.
I'm sure your friend has some cheap ~85dB speakers - that's why he needs 300W for real loud music.

Best regards,
"The Honk-Honk quality grade"
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