For the device under
SB12-NSD
– SVS
I need a schematic, because of the necessarily of enhancing the gain factor.
According the attached image of the plate amp there are follow PCB's:
1) input board (maybe summing amp, low pass crossover network and line buffer)
2) power amplifier board
3) main board (switch mode power supply)
Because the circuit boards are purchased parts from different far east manufacturers, SVS Sound doesn't have a detailed circuit diagram.
Who know the actually manufacturer of the input- and power amp board ?
Thank you for an advice.
This thread doesn't help:
SVS PB12 NSD driver substitute
SB12-NSD
– SVS
I need a schematic, because of the necessarily of enhancing the gain factor.
According the attached image of the plate amp there are follow PCB's:
1) input board (maybe summing amp, low pass crossover network and line buffer)
2) power amplifier board
3) main board (switch mode power supply)
Because the circuit boards are purchased parts from different far east manufacturers, SVS Sound doesn't have a detailed circuit diagram.
Who know the actually manufacturer of the input- and power amp board ?
Thank you for an advice.
This thread doesn't help:
SVS PB12 NSD driver substitute
Attachments
I do not have the schematic, but adjusting the gain should be possible without.
It is likely that there is a standard gain stage somewhere near the input. Trace the input signal until you find an opamp. Work out if this opamp is wired like a gain stage. If not, continue to the next opamp. If it applies gain, trace the circuit around this opamp. Using this circuit, determine which resistor to swap and for what value. If there is no gain stage, try again on the power amplifier board.
It will be helpful to remove the input board prior to inspection.
It is likely that there is a standard gain stage somewhere near the input. Trace the input signal until you find an opamp. Work out if this opamp is wired like a gain stage. If not, continue to the next opamp. If it applies gain, trace the circuit around this opamp. Using this circuit, determine which resistor to swap and for what value. If there is no gain stage, try again on the power amplifier board.
It will be helpful to remove the input board prior to inspection.
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