Question about Technics SA-AX730 Receiver
Says "low imp" where a &b speakers are dsplayed
Low imp probably means "Low Impedance". You've got either too many speakers hooked up in parallel on the same binding posts or spring contacts or the single sets of speakers on A & B are low impedance to begin with (i.e. 4ohms).
When you switch between A, B, and A + B, the last setting just puts B in parallel anyway.
Too low an impedance means higher current and the receiver may not be capable of handling it. Check your owner's manual for recommended speaker impedances.
If you test with a single set of speakers, switching the actual cables from A to B should work (even at a nominal 4ohms). If that's the case then you will need a different set or sets or speakers to hook up to B. If it doesn't work at all and still says "low imp", test with a known higher impedance speaker (i.e. ~8ohms).
If none of that works, you're on your own.
Good luck in any case.
Posted on Feb 04, 2009
This is similar to protect mode in that the amp has detected a short in the output and has shutdown to prevent damage. Without seeing the unit, I'm a bit hesatant to suggest repair tips. At this point, I would suggest you get a detailed estimate from a local shop. We should be able to guide you through the actual repair once the results are posted here.
Posted on Feb 04, 2009
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Posted on Jan 02, 2017
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