I want a technical manual for Tecnics RS-CH550 amplifier

SOURCE: Technics SH-AC300 Connection to Power Amp & Pre-Amp

Hi!
The problem is, that your SH-AC300 needs an amp with 5.1 input (but no decoder). For this purpose technics delivered SA-AX710.
So if you'd like to use your current equipment it would be impossible.
The only option is for you to buy 2 more Power Amps (SE-A900S), so that each of 3 amps would take care for one part of music. (one for FL, FR; one for RL, RR; and one for sub and center).
Another option is for you to buy SA-AX710. Then all the problems would be solved with it.

SOURCE: Denon AVR-4802R automatically shuts off in multi-zone mode

i had the volume of the multi-zone tuned too high and was attenuating it in an external control box. Once i took the multi-zone volume down to -25db, the problem went way. My main zone was operating around -35db so did not have the problem.

SOURCE: I have a technics SU-V2X

The manual states (apologies if you have the manual and are already aware of this):-

The indicator should flash for about 5 seconds then stay on steady.
If it continues to flash then the following may be the cause:-

DC voltage appearing in the output.
A short circuit in the speaker wires (or speakers)

(Manual doesn't specify whether speaker open circuit would give this fault. Perhaps try another set of speakers?)


I would add that this might be too low an impedance speaker or incorrect setting of impedance (see the button on the back of the unit). If in doubt set to lowest impedance then if speakers are higher it shouldn't cause harm.

Regards

SOURCE: I have a Fisher RS-717 stereo receiver, amplifier.

Yes you can use either A or B without a problem. The restriction is when you have both A & B connected. In that case, the speakers MUST be a minimum of 8 Ohm impedence. Using either A or B, you can use speakers of 4 Ohms impedence.

Dan

Testimonial: "Prompt answering, appreciate it very much."

SOURCE: i have a technics amplifier SU G75

I have a technics too, and faced the same problem. The solution is very simple just ensure the +ve and -ve wires are connected correctly for each speaker to the amp. Eg. red wire to the red knob and black wire to the black on both ends. sometimes this arises because the wires are of just one color however there will be some marking on the wire to indicate which is +ve and -ve. This took care of the overload problem.