Zenductor

[Ben Mah]

Does the ACP+ do 4Vpk? The 32 Ohm output impedance would be nice to have.

Here some measurements that I did last year. It can do more than 4Vpk.

 

[Michael Rothacher]

Thank you! They should be a good combo. I love the ACP+.

 

[e_fortier]

Jim, do you have a part number for the 12VDC power supply you show in the build guide pics?

Have found the Meanwell GST60A12-P1J - which is a 5Amp unit - I assume this will suffice?

The Meanwell has a 3 prong power cord, you would be better off with an isolated 2 prong power supply like recommended in the BOM. (It prevents ground loop)

Each channel seems to be bias at 0.9Adc (0.5V across 0.56 ohm resistor) so I’d aim for 12Vdc, 2A or 2.5A for each monobloc.

EDIT; Just noticed that the BOM is showing a 12V, 3A power supply.

BR
Eric

 

[Nelson Pass]

Grounding the minus of the supply has the potential for non operation.

 

[Zen Mod]

Grounding the minus of the supply has the potential for non operation.

BigBadaBoom, or at least short sizzzzzzzzle! event



(amp's V- is (0R56*Iq) bellow amps GND)

 

[Monk55]

6L6 at his best

 

[Michael Rothacher]

 

[Nelson Pass]

Zowie!

 

[Michael Rothacher]

 

[Michael Rothacher]

That pic is the first channel lurching to life

 

[generg]

:--))

 

[Zen Mod]

checking startup is for Sissies

we, brave builders, we are just flippin' damn power switch!!

 

[MEGA_amp]

BigBadaBoom, or at least short sizzzzzzzzle! event



(amp's V- is (0R56*Iq) bellow amps GND)

Say you wanted to build a linear supply and a chassis (bigger heatsinks) with an earth gnd, do you just use a bridge/10R resistor to earth for audio ground? And then just leave -V floating?

 

[Zen Mod]

GND is state of mind

though, always best to respect state of mind of Constructor

so, in this case too, you can either short audio gnd to case, or "elevate" through regular ways - be it solo NTC or combined with bridge

-V is -V; negative leg of PSU, which is not declared and used as GND

so, yes, as Pa sez - important is not to use switchers having neg leg shorted to its case, thus resulting in short with chassis/safety GND

 

[Nelson Pass]

It won't break, it just won't bias up.

 

[gary s]

Nelson, do you have a part number for the recommended 12VDC power supply - no part number is mentioned in the BOM in your article.

Want to make sure I get one that is functional with the amp.

 

[Zen Mod]

It won't break, it just won't bias up.

now you realistic ..... lost sense for drama just for a moment .....

 

[Monk55]

Finals

 

[6L6]

Nelson, do you have a part number for the recommended 12VDC power supply - no part number is mentioned in the BOM in your article.

Want to make sure I get one that is functional with the amp.

This is the PSU used in the Amp Camp.

 

[Michael Rothacher]

I think those came from Parts Express, but are available from other sources.