Exposure Model Super XV (XX), PCB "15 SUPER" ISSUE 5 (APRIL 1997) - Schematic needed
For troubleshooting and performing various measurements I need a schematic diagram resp. service manual of this integrated amplifier:
Freie Ton- und Bildwerkstatt: Exposure XV super 1997
Exposure XV problems, schematic needed! - pink fish media
unfortunately under
Exposure Electronics
their schematics aren't online available.
For troubleshooting and performing various measurements I need a schematic diagram resp. service manual of this integrated amplifier:
Freie Ton- und Bildwerkstatt: Exposure XV super 1997
Exposure XV problems, schematic needed! - pink fish media
unfortunately under
Exposure Electronics
their schematics aren't online available.
no news?
The topology must be very special.
In the output stage are follow two Exicon MOSFET's in use:
1) EXP002N
2) EXP002P
Idle current through this MOSFET's is only 5mA (1mV about each 0R22 source resistors).
This value is unusual, values above 100mA are usual by the use of MOSFET's.
There is also no possibility for adjusting by a potentiometer.
- maybe a bias servo is in use - go to
Dynamic Bias - Active Bias - Automatic/Self biased - Overview wanted
Additional features I note:
- a second pair of MOSFET's is in use: EXP8N and EXP8P - maybe a voltage regulator
- Pickering Reed Relais "80-2-A-12/1" - go to
http://www.pickeringrelay.com/pdfs/80-85-general-purpose-reed-relays.pdf
which function?
The front-end uses follow small signal transistors:
BC414C or BC560C (OnSemi), ZTX452-552, ZTX214/384 (ZETEX/DIODES)
Sound is good, but a bit crispy by compare to class A amps.
Maybe there are possibilities for enhacement of the sonic quality. therefore schematic needed.
The topology must be very special.
In the output stage are follow two Exicon MOSFET's in use:
1) EXP002N
2) EXP002P
Idle current through this MOSFET's is only 5mA (1mV about each 0R22 source resistors).
This value is unusual, values above 100mA are usual by the use of MOSFET's.
There is also no possibility for adjusting by a potentiometer.
- maybe a bias servo is in use - go to
Dynamic Bias - Active Bias - Automatic/Self biased - Overview wanted
Additional features I note:
- a second pair of MOSFET's is in use: EXP8N and EXP8P - maybe a voltage regulator
- Pickering Reed Relais "80-2-A-12/1" - go to
http://www.pickeringrelay.com/pdfs/80-85-general-purpose-reed-relays.pdf
which function?
The front-end uses follow small signal transistors:
BC414C or BC560C (OnSemi), ZTX452-552, ZTX214/384 (ZETEX/DIODES)
Sound is good, but a bit crispy by compare to class A amps.
Maybe there are possibilities for enhacement of the sonic quality. therefore schematic needed.
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.