line 6 spider iv direct out to a mixer without losing the sound of the speakers
Its so easy.. when you plug the stereo 1/4" TRS, it will mechanically lift the conector. Thats why it will cut the speaker signal. So you must open the amp (4 + 2 bolt above the speaker), unplug the speaker conector, drag it backward, than you will see the output board.
The output board only have one bolt. unscrew it, and drag backward. flip it, than you will see the 6 pin conector. So just jumper it. Means that you need 3 cable (arrround 2cm each). weld that 3 cable to jumper the connector. so when the connector lifted because you plug the stereo 1/4", it will still connected.
I do this on my line 6 spider iv 30. and have great result. when i jumper it, the signal to speaker is so stable. And before jumpered, the signal is weak because its not weld. I also have stereo clean line level signal out.
Anton