SA2015 V-MOSFET Builders

[astx]

> 100V/us

 

[thimios]

Just a fitting test.
Excellently!!!!!!!!!
Second picture,the interconnect cable for MCU(Housekeeping) and Backplane Panel connection.

 

[astx]

 

[thimios]

All well fitting but this cable isn't flexible at all.
I wonder if this stresh the connectors and give troubles.
Maybe something like this will be more suitable (flexible) but i don't know where i can find this.

 

[thimios]

Rear panel in position, looking for the best way to wiring.

 

[thimios]

What is the preferable option for speaker return cable 1st or second?
The same for the MCU(housekeeping) star GND.
On the backplane green socket or direct on 0V PSU?

 

[astx]

Second option. Keep the back panel star ground as clean from dirty currents as possible. Wire the RCA ground with a thick cable to the star ground left or right.

Wire the MCU ground with 22R to left star ground and with 22R to right star ground. This is only for DC detection needed.

 

[thimios]

Second option. Keep the back panel star ground as clean from dirty currents as possible. Wire the RCA ground with a thick cable to the star ground left or right.

Wire the MCU ground with 22R to left star ground and with 22R to right star ground. This is only for DC detection needed.

Each channel RCA to each own channel star GND(PSU 0V)?
Starting from where,from RCA GND connector or from amplifier input connector?
This way?
Are you calling star gnd the power supply 0v?

 

[astx]

RCA ground left direct to star ground left on backplane pcb. same again for other channel.
PSU zero/gnd is not the silent ground. Silent ground is on the backplane. Your picture is so far correct if you add the silent grounds near your RCA grounds.

BR, Toni

 

[thimios]

This way?

 

[astx]

looks good so far. maybe better if you wire the 22R mcu ground connection to each channel psu gnd to avoid any extra noise introduced by mcu supply.

 

[thimios]

looks good so far. maybe better if you wire the 22R mcu ground connection to each channel psu gnd to avoid any extra noise introduced by mcu supply.

Ok.
And the speaker return?

 

[astx]

... to the corresponding psu ground.

 

[thimios]

Ok.
The auxiliary power supply.
Backplane wiring for parallel relays.

 

[astx]

Very nice!
Shortcircuit the 2 inner pins of AC1 socket. Use only the pin 1 and 4 of AC2 socket to get 12VAC for backplane relay circuit.

BR Toni

 

[thimios]

Very nice!
Shortcircuit the 2 inner pins of AC1 socket. Use only the pin 1 and 4 of AC2 socket to get 12VAC for backplane relay circuit.

BR Toni

Yes i will do,but the problem is where this auxiliary pcb will be mounted.
A possible position is on the inside of the front panel.

 

[astx]

above toroids between mcu and inrush current limiter?

 

[thimios]

I think there isn't room .

 

[thimios]

I think there isn't room .

 

[thimios]

Looks like i have only one remaining position.
This behind the front panel.
... Many cables for arrangement!