Question about Technics Audio Players & Recorders
This allows you to select the correct amplifier output impedance for the particular speakers you have connected, Proper selection insures the best efficiency, response and prevents potential damage to speakers or the amplifier, Refer to page 17 of this manual:
Posted on Nov 20, 2014
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Posted on Jan 02, 2017
SOURCE: Technics SA-AX730
The very FIRST thing to check is to make certain ALL of your speakers have an IMPEDENCE of 8 OHMS. Virtually all speakers of even modest quality will include this specification on a label on the back of the speaker. You CANNOT run more than (2) TWO speakers with 4 OHMs impedence on ANY amplifier (technical discussion too long!) [NOTE: Even though fused, your receiver has internal overload protection systems to prevent permanent damage. However, you cannot re-set these systems yourself. Your dealer or authorized service center must do this.] But, before you take it in for service, there is one more "test": check for shorted and/or mis-connected/disconnected speaker cables/wires. Visually inspect connections at the receiver and speakers first. You might find something obvious! If everything looks okay, then disconnect ALL of the speakers; and reconnect and test them one at a time (at relatively low volume.) For example, reconnect the left front speaker, test the system; THEN add the right front, test the system,and so on, ADDING one more speaker each time - FIRST MAKING SURE EACH OF THEM HAS AN IMPEDENCE OF AT LEAST 8 OHMS! IF there is a short (or bad speaker) this will help isolate it. Hopefully one of these "fixes" will work for you. GOOD LUCK!
Posted on Jul 18, 2007
SOURCE: Technics SA-GX470
over load means your speakers and its cable----please check it for bad cable or bad speaker------try to insert speaker one by one and test each time to investigate the bad one.--------if every thing is ok and you keep good ventilation around your receiver (no blocking of ventilation holes)and you still have a problem your protection circuit in your receiver needs to be checked by service technician
Posted on Aug 06, 2008
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
Have you checked to see if your fan is still working.....I am having the same issue but I think it's my fan b/c it was doing this when I first got it and for the 1st couple of years.
Posted on Jul 31, 2009
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