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-   -   power amp and extern supply ? (http://www.diyaudio.com/forums/power-supplies/230427-power-amp-extern-supply.html)

tinitus 20th February 2013 10:17 AM

power amp and extern supply ?
 
any experience with this ?

especially interested to know about connectors etc

photos would be nice too....anything goes :)

Magz 20th February 2013 01:25 PM

3 Attachment(s)
Quote:

Originally Posted by tinitus (Post 3377839)
any experience with this ?

especially interested to know about connectors etc

photos would be nice too....anything goes :)

For preamps I have used Neutrik Speakon pro audio connectors with great success (the metal ones). Voltages up to 400VDC no problem so far, even though they are not rated for such use. The pins on the chassis and cable connectors are large, well spaced and easy to solder to, so I can use 15.5ga. litz wire for my returns with no problems. Nice satisfying "click" when they engage, as well.

Check out the pictures.


The specific parts are:

NEUTRIK NL8MPR-BAG SPEAKON 8 POLE CHASSIS MOUNT
NEUTRIK NLT8FX SPEAKON STX 8P FEMALE CABLE CONNECTOR NICKEL

Available at Parts Express.

Redshift187 20th February 2013 04:44 PM

Here's what I used:

http://www.diyaudio.com/forums/chip-...ml#post2330146

IEC 60320 - Wikipedia, the free encyclopedia

krokkenoster 21st February 2013 07:42 PM

Quote:

Originally Posted by tinitus (Post 3377839)
any experience with this ?

especially interested to know about connectors etc

photos would be nice too....anything goes :)

Tinitus hi!
I used to build pre amplifiers getting their power from the main amp's supply. What we used back then was an octal tube plug and socket this gives eight pins and worked fine back then :D Now to find them

tinitus 24th February 2013 10:38 PM

1 Attachment(s)
great posts, thanks

since its high curent, I might use a 3-pin IEC, also mentioned by redshift/Tyler

but its really a standard for mains voltage, so I have to make sure noone connects it to mains

solution
mains power chassis plug is always a male , and detachable mains cable have female connector
so, power supply could have female chassis plugs as DC output
and power amp mounted with fixed cable having a male connector

using ultra short cable, and angled connector, it could be ok

JMFahey 24th February 2013 11:51 PM

Why not use an Industrial Power connector?
There are tons of them, they are designed for exactly that purpose and NONE is even remotely close to a line power connector, which is the most dangerous design idea in the world.
Here you have a few.
Jones Plugs & Sockets | Mouser

No need to use incompatible XLR/Speakon/Line/etc. connectors which to boot have the high possibility of causing terrible mistakes.

tinitus 25th February 2013 12:42 AM

Quote:

Originally Posted by JMFahey (Post 3384652)
.... and NONE is even remotely close to a line power connector, which is the most dangerous design idea in the world.
Here you have a few.

thanks, I have never seen those

yes its as you say very dangerous and wrong to use AC line power connectors for DC

and the female chassis plug I suggested to use as DC output is designed for AC output chassis plug , yes
but personally I have never seen any
but Im not happy about it either, no
and one reason why I intended to mount a fixed cable on power amp, with male connector...its fits nowhere else

but still looking for the right one

Redshift187 25th February 2013 03:16 AM

2 Attachment(s)
Quote:

Originally Posted by tinitus (Post 3384577)
great posts, thanks

since its high curent, I might use a 3-pin IEC, also mentioned by redshift/Tyler

but its really a standard for mains voltage, so I have to make sure noone connects it to mains

solution
mains power chassis plug is always a male , and detachable mains cable have female connector
so, power supply could have female chassis plugs as DC output
and power amp mounted with fixed cable having a male connector

using ultra short cable, and angled connector, it could be ok

No. Use something that is different than what your mains power is. It's the only safe solution.

IEC comes in a big variety, you don't need to use the same ones as your mains. I didn't.

My mains on the left. My DC cable on the right:

tinitus 25th February 2013 08:28 AM

Quote:

Originally Posted by Redshift187 (Post 3384845)
My mains on the left. My DC cable on the right:

exactly that ;)

additional safety bonus..... the female chassis plug have blinded/closed holes when the connector is pulled


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