1DIFFQC amplifier

[bobfig]

yah i say that attachment from the link earlier you posted. i don't comprehend what its saying. if i had it in a scamatic style drawing i could maybe understand.

[OnAudio]

Hi Bob,

Went window shopping for you. You could bring down the costs by using these options.
Capacitors
You may parallel as you wish
SLPX682M063E7P3 Cornell Dubilier Electronics (CDE) | 338-1651-ND | DigiKey
ECO-S1KP472CA Panasonic Electronic Components | P7372-ND | DigiKey
Transformers
1 * 800VA for stereo Antek - AN-8230
or
2 * 400VA for stereo Antek - AN-4232

[OnAudio]

Originally Posted by bobfig

yah i say that attachment from the link earlier you posted. i don't comprehend what its saying. if i had it in a scamatic style drawing i could maybe understand.

Its the regular power supply represented as functional blocks .

[bobfig]

Originally Posted by OnAudio

Hi Bob,

Went window shopping for you. You could bring down the costs by using these options.
Capacitors
You may parallel as you wish
SLPX682M063E7P3 Cornell Dubilier Electronics (CDE) | 338-1651-ND | DigiKey
ECO-S1KP472CA Panasonic Electronic Components | P7372-ND | DigiKey
Transformers
1 * 800VA for stereo Antek - AN-8230
or
2 * 400VA for stereo Antek - AN-4232

thanks for the help

wow so this is going to need 2 transformers and ima have to get 2 of those blue power supply boards? this thing seems like it dose swing some power. i wasn't expecting it to be so much tho. lol

so you're accepting this layout x2 with duel 400va transformers?



also i notice that on the board there is coil 1 and coil 2 whats the measurement on that?

[OnAudio]

Hi Bob,

Cooking an answer

[bobfig]

i hope its yummy

[OnAudio]

Originally Posted by bobfig

thanks for the help

wow so this is going to need 2 transformers and ima have to get 2 of those blue power supply boards? this thing seems like it dose swing some power. i wasn't expecting it to be so much tho. lol
so you're accepting this layout x2 with duel 400va transformers?

The on amp board 33u/47u capacitors are for the amp board and are part of the amp BOM. For PSU board you could parallel 3*2 = 6 : 6800 caps on the PSU board . Remember to use a line filter on the incoming a/c power line.

You have various options of transformers (assuming a stereo setup and operation with either 8 ohm or 4 ohm speakers (nominal 4 ohm, 2 ohm ), total stereo either 2 ohm or 1 ohm load on transformer). That brings recommended cap size to 20,000u per rail(total 40,000uf) for stereo.
Transformer rating
300VA*2, 400VA*2, 600VA*1, 800VA*1

Originally Posted by bobfig

also i notice that on the board there is coil 1 and coil 2 whats the measurement on that?

Thats the output inductor L1 connection. Its 1uH . The schematic is here http://www.harrisonaudiolabs.com/Amp...QC/1DIFFQC.pdf

[OnAudio]

Originally Posted by bobfig

i hope its yummy

Looking forward to review your choice again

[bobfig]

hmm ok now i just need to slowly start buying parts as this is going to get expensive.

[OnAudio]

Originally Posted by bobfig

hmm ok now i just need to slowly start buying parts as this is going to get expensive.

You could set a budget limit (just like big firms) and work around that ie , 2200u caps * 8 * $2 = $16