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Sansui au-G90x integrated amplifier connetcted to 4 speakers.The amp shuts off when played low.

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  • Anonymous Jan 11, 2009

    Sansui au-G90x integrated amplifier connetcted to 4 speakers.The amp shuts off when played low.

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Dirth control switches and/or dirty/corroded/worn-out speaker relay.

Posted on Sep 03, 2009

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Looking for an owner's manual for the Sansui Integrated Amplipier AU-D9.


Hi info851163...
Go to the following website and register to download your Owners/User Manual for your Sansui Intergrated Amplipier AU-D9.
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http://www.hifiengine.com/manuals/sansui/au-d9.shtml

Also at this website...for $6.92 Canadian Dollar:
http://www.ioffer.com/i/Sansui-AU-D9-amplifier-Service-manual-79410631

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Off of the top of your head could you tell me what my problem with my sansui AU-717 amps problem could possibly be? When I am playing a cd if the volume is even barely loud the sound will go out then I...


It sounds like one of the following:
> You have an impedance miss-match between your speakers and the amp (speakers have am Ohm rating lower than the amp can handle),
> You have the switch set to both A&B speakers turned on, but have speakers connected to either the A or B set, but not both, or
> You have both A & B (4 speakers) connected, and one or both have an Ohm rating lower than 8 (if two sets are connected, they must be 8 or higher).

My best guess off the top of my head.

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Proper procedure for hook up to Au 719 sansui amp


This is an integrated amplifier so you connect both of your speakers to the speaker outputs making sure that you keep them in phase. Red or plus terminal on speaker to red or plus terminal on Amp and the same with the other channel. Then connect your input devices as they are marked on the rear of the amp. You didn't mention what devices you are trying to connect to it so give additional info if you need more help.

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Pioneer SA100 integrated - low, distorted output


At this point, I would be looking at the main power suply for the final output stage. You may be attempting to drive the output with the driver section rather than the final amp stage. The center pin of the output transistors should have B+/B- on them. Measure that to ground and report the value here.

Dan

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Sansui AU-X410R Amp, at power on, lights on but no sound (surge protection click doesn't occur). Sometimes powers off for no apparent reason.


One thing you could look at is that thing that makes the click, it could be a relay and they do go wacky sometimes (hence why it shuts down). If you are lucky it will tell you (on the relay) everything you need to replace it.

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Amplifier displays "CUR"


Hello anwbrown,

The "CUR" display means that the amp is drawing excessive current and the protection circuit is activating. Too low impedance or shorted speakers will cause the amp to draw excessive current.

The Alpine V12 is a Class D mono amp with only one set of speaker outputs. All versions, M301, M501, and M1001 are only stable to 2ohms. Assuming that all 6 of your connected subwoofers and speakers are 4ohm and they're all connected in parallel, the amp sees a .67 ohm load, far below it's rated impedance.

When brand new, the amp could probably operate at low to moderate volume levels without drawing excessive current. But as electronic components age, their tolerances change and they become less able to withstand excessive current or mismatched impedances.

I'd get a 4-channel amp and drive the 4" speakers off the front channels and the 6X9's off the rear channels. And just power the subs off the V12 making sure that they are connected to show a minimum load of 2ohms.

Hope this helps.

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Sony Xplod Car Audio Amplifier


When the protect mode is activated,always be the audio amplifiers IC's damaged you gotta change them.

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I own a classic Sansui intergrated amplifier (AU-717). It has a short in one channel. At low volume, the sound shorts out. I've had this unit for about 20 years now. Otherwise, it's a great product!


Hi mellemcee


Cool amp mate, and becoming collectable now to. Sansui amps from the era where the best in the world of HiFi. iT may have lost bias control to the offending channel, it may have dirty source switches, tape monitor switch, or even speaker switching. The speaker protection relay may also have a dirty contact, will usually burst back into life with a quick rotation of the vol control. Can you pin the problem down a little more with the info i have given you, try all the controls to see if it impacts on operations, you will need to fix those problems first. Low bias would make that channel sound distorted at low levels also. Is this what is happening to you??

regards
Graeme

Apr 18, 2008 | Audio Players & Recorders

1 Answer

I have a Sansui AU-717 Integrated Amplifier that needs some work done on it. Is there a Sansui service center in Washington State that can work on this?


This company is not like they used to be. You can try the links below to see if you can find authorized service for your set.

Sansui:
http://www.sansui-india.com/

http://www.classicsansui.net/


Historic information about Sansui:
http://en.wikipedia.org/wiki/Sansui


I would personaly suggest to find a service center or a very good local tech who can do audio amplifier and reciever service.


Jerry G.

Apr 13, 2008 | Audio Players & Recorders

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