150 WAtt amplifier

ali_moinuddin · 19th August 2008, 06:24 AM

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 .

ostripper · 19th August 2008, 02:56 PM

With +/- 30V you have only 60w amp.
What amp is this ??? post schematic....

ali_moinuddin · 20th August 2008, 01:24 AM

Dont have the schematics

russo · 20th August 2008, 01:59 AM

I think that those wires are to tin to handle 5amps or more of current to product the supposed 150w

ali_moinuddin · 20th August 2008, 04:29 PM

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.

ali_moinuddin · 20th August 2008, 04:44 PM

Here is the Picture of the completed assembled UNit

Bone · 20th August 2008, 07:44 PM

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.

ali_moinuddin · 21st August 2008, 05:25 AM

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.

ali_moinuddin · 21st August 2008, 05:28 AM

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!!!!!!

AndrewT · 21st August 2008, 01:12 PM

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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19th August 2008, 02:56 PM	#2
ostripper diyAudio Member Join Date: May 2008 Location: Albany , NY (smallbany)	With +/- 30V you have only 60w amp. What amp is this ??? post schematic....

20th August 2008, 01:24 AM	#3
ali_moinuddin diyAudio Member Join Date: Jun 2007	Dont have the schematics

20th August 2008, 01:59 AM	#4
russo diyAudio Member Join Date: Jan 2008	I think that those wires are to tin to handle 5amps or more of current to product the supposed 150w

20th August 2008, 07:44 PM	#7
Bone diyAudio Member Join Date: Jun 2004 Location: Dorset, UK	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.

21st August 2008, 05:25 AM	#8
ali_moinuddin diyAudio Member Join Date: Jun 2007	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.

21st August 2008, 01:12 PM	#10
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	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.