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Old 19th August 2008, 06:24 AM   #1
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Cool 150 WAtt amplifier

Hello friends,

I have two DVD players & one One TV receiver , I wanted to connect them to single Audio Amplifier, so i build a single unit with four line in to a mixer followed by a bass treble circuit and one 150WAtts amplifier.

For amplification purpose i Purchased the amp kit online frm kits-audio.com.

This amp uses +- 30 Volts DC (recomended +-45 volts DC but i dont want to take any chance he he he so i am using only + -30 volts DC)

I was surprised with the performance of the amplifier.

Attached is the picture of the whole unit.

NOw time to listen and enjoy best music .
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File Type: jpg amplifier.jpg (77.4 KB, 592 views)
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Old 19th August 2008, 02:56 PM   #2
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With +/- 30V you have only 60w amp.
What amp is this ??? post schematic....
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Old 20th August 2008, 01:24 AM   #3
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Dont have the schematics
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Old 20th August 2008, 01:59 AM   #4
russo is offline russo  Portugal
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I think that those wires are to tin to handle 5amps or more of current to product the supposed 150w
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Old 20th August 2008, 04:29 PM   #5
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Attached is the Schematic of the Mixer unit

http://www.kits-audio.com/5532_tonectrol.html
and above is the URL of the BAss treble circuit which i used for my Design.

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Old 20th August 2008, 04:44 PM   #6
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Here is the Picture of the completed assembled UNit
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Old 20th August 2008, 07:44 PM   #7
Bone is offline Bone  United Kingdom
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Who and where are Kits-audio.com?
There's not enough information about them on their web site for me to trust my money!

Tony.
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Old 21st August 2008, 05:25 AM   #8
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Hi Tony,

I believe you can find more info on their contact us or about us page.

But i didnt check it . I just placed my order and got it fine.
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Old 21st August 2008, 05:28 AM   #9
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Quote:
Originally posted by russo
I think that those wires are to tin to handle 5amps or more of current to product the supposed 150w


Hi russo,
yes you are right I forgot to change the wires for the power Supply with heavy gauge wires. I was testing with these thin wires and i assembled whole unit.

Feel lazy to remove everything out and change wires.

MAy be some day i will change it . In a hope if it melts i have reason to make a new more powerful amp he he he!!!!!!
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Old 21st August 2008, 01:12 PM   #10
AndrewT is offline AndrewT  Scotland
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I don't like the orientation nor the location of that output device heatsink.
Check operational temperatures until you are sure you are not overheating the outputs.

+-30Vdc supply rails might just about give 40W into 8r0 if the PSU is good.
60W into 8r0 requires 30.98Vpk and that is impossible from +-30Vdc.
150W into 4r0 requires 34.6Vpk into the load and worse needs near 25Apk capability for worst case reactive loading. A properly sized +-40Vdc PSU may just about support 150W into 4r0 but I can't vouch for the ability to play real 4ohm speakers.
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regards Andrew T.
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