I got lucky last week and found out a QRX-777 here in italy with 4 Sansui speakers for only 300€ (about 320$)
I cleaned all the external parts and tested it. Works like a charm, QS, SQ, CD-4 (except someone removed the lamp)
Today I decided to improve separation of QS just moving the internal pots on the F-2088, I already did this on the other QRX-7001 I have.
Somewhere I remembered I had a spare F-2088 board so I decided to swap it and setup that board too. Surprisingly it didn't sound good as the other one, but it works. I took it off the amp and replaced it with the original, but it took me a second to notice a difference on the board. Though they both are F-2088 the PCBs are a little different.
Can you spot the difference?
Top is taken from the 777
Rear PCBs
Sent from my iPhone using Tapatalk
I cleaned all the external parts and tested it. Works like a charm, QS, SQ, CD-4 (except someone removed the lamp)
Today I decided to improve separation of QS just moving the internal pots on the F-2088, I already did this on the other QRX-7001 I have.
Somewhere I remembered I had a spare F-2088 board so I decided to swap it and setup that board too. Surprisingly it didn't sound good as the other one, but it works. I took it off the amp and replaced it with the original, but it took me a second to notice a difference on the board. Though they both are F-2088 the PCBs are a little different.
Can you spot the difference?
Top is taken from the 777
Rear PCBs
Sent from my iPhone using Tapatalk