Question about Swiss Audio SDX1000 Car Audio Amplifier

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My amp makes the speakers heartbeat and the amp makes a weird squeaky noise. I have reconnected everything with fresh wires and it still does the same. I think it's an internal problem i don't know.

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Sounds like a bad connection, probably the card for the amp, or wiring inside is loose, dirty, or both.

Posted on Mar 11, 2011

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Posted on Jan 02, 2017

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1 Answer

Radio sound low and squeeky, works good in summertime


The volume control on your radio is called a potentiometer, which may be going bad. It works better when its warm because materials expand as they warm up and make tighter contact with each other.

It is also a possible a bad wiring connection exists. Poor contact will cause static, poor audio quality and intermittent output.

Your radio will have plug type connector(s) Your speakers will most likely each have two wires with single female spade connectors of different widths (keeps the polarity correct) the wire with the stripe (of whatever color) will be connected to the negative (-) speaker terminal.

So you need to check all the connections, one is making poor contact.
If both speakers (assuming you have two) sound good or bad... then start with the plug connectors for the radio and any independent black ground wire coming out of the radio.

If one speakers sounds okay check the connections on the other one. You check the connections by carefully pulling the speaker wire off of the speaker and then carefully pushing it back on making sure it feels tight and secure.

PS: If you pull the fuse for the radio, the radio will have no power and will not work. The radio coming on proves the fuse is good.

PSS: Your owners manual should provide lots of information on your sound system components.

Aug 11, 2017 | 2000 Chevrolet Silverado

2 Answers

Whats going on with my Amp????


try one speaker only---might be the reason its a MONO amp

Apr 04, 2012 | Car Audio & Video

1 Answer

My subwoofer powers on, but I get no sound out of speakers or subwoofer and all of connections are correct.


First off....never connect a speaker when the amp is on or vice versa. Second, I would get a tone generator and test that the speakers have not been ruined and check the amp to make sure you did not blow that. Most amps have a protective circuit to prevent damage from over heating or hooking up wrong. Also make sure that you have enough output wattage for the way you have them wired..

Mar 16, 2012 | Aspire Digital AD-150PSC Subwoofer

1 Answer

There's a flashing green and red light when my car is on and the sub attached to the amp is making a heartbeat like noise when the light goes green and then the light goes red right away. everything is...


Check the wires for short circuiting at the car body or speaker wires. Triple check really everything.
Make sure the connectors are 100% connected to the wires. There maybe some resitance if the amp isn't getting enough power from the battery.

Aug 19, 2011 | Jensen JXP680 Car Audio Amplifier

1 Answer

Why is my sub heartbeating and my amp in protection mode


Sounds like a shorted speaker wire. Try disconnecting speaker from amp and see if protection light goes out- if so replace bad speaker wire. Only other issue i can think of from your short description is that you might have a bad ground going to amp or the remote power wire is bad. try running a new ground wire to a clean metallic spot on you cars chassis close to where the amp is located. Good ground = good clean sound

Mar 04, 2011 | Car Audio & Video

1 Answer

My sub stopped working today made a weird noise then cut out i had a 500w amp and 500w 10'' subtube i connected the sub to 3 other amp set ups all the amps work and power other subs but my sub wont make...


did you check the fuse if you have one on it. also u want to have more wattage on your speakers than your amp to protect from blowing your speakers.

Jul 29, 2010 | M-Audio Car Audio & Video

1 Answer

Subwoofer/speakers are hooked up to my amp but making bad noise


it sounds like you have some wires crossed or a bad ground
Hope this helps

Jan 25, 2009 | Kicker CVR12 Car Subwoofer

1 Answer

I have altec lansing speakers AVS500 and have no sound


It sounds like the subwoofer speaker has blown. If you are comfortable working with a soldering iron and speakers then you can open the case and replace the speaker with a replacement subwoofer speaker. A good online store for replacement speakers is PartsExpress.com

Dec 28, 2008 | Altec Lansing AVS 500 Computer Speakers

1 Answer

Thumping speakers - no power light is on - wired correctly


the amp is going into protect mode due to something wrong in the amp or some thing in the wiring to it ooh yea if you are getting 18v power to the amp that is way to high it should not be higher then 15v if the amp is in protect mode it will not play at all.

Nov 02, 2008 | Visonik Dual Bass Box with Amplifier Car...

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Speakers making loud buzzing noise


From your alternator, Make sure none of your RCA's are near a power wire, check your grounds as well.

Jan 09, 2007 | Pioneer TS-D690R Coaxial Car Speaker

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