I spent a fiver on a small HiFi for the CD player from the big rummaging table at our local flea market.
The intention was to tap into the audio before the amp and use it like a separate CD player.
I got it home and obtained a scan of the manual. The manual even shows the block diagrams of the chips. It is a JVC set.
That was when I realised why it began to feel heavy on the way back to the car.
I looked up the audio amp chip and the distortion figure was more like that of a preamp. You bet that was for running the reduced load with the headphone resistors in circuit.
I wired up a 3.5mm plug with 33 ohm resistors hidden in the other end of the lead.
The amp chips are TDA7294. They look the same as the others we are chatting about but with a MOSFET output stage in the same package style.
It pluged and played and the cassette even worked in both directions. It is auto reverse.
The intention was to tap into the audio before the amp and use it like a separate CD player.
I got it home and obtained a scan of the manual. The manual even shows the block diagrams of the chips. It is a JVC set.
That was when I realised why it began to feel heavy on the way back to the car.
I looked up the audio amp chip and the distortion figure was more like that of a preamp. You bet that was for running the reduced load with the headphone resistors in circuit.
I wired up a 3.5mm plug with 33 ohm resistors hidden in the other end of the lead.
The amp chips are TDA7294. They look the same as the others we are chatting about but with a MOSFET output stage in the same package style.
It pluged and played and the cassette even worked in both directions. It is auto reverse.
