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Hi there , I have a question for you and hope you can help me answer. I have a subwoofer that hasn't been switch on for a few years and it is neither connected to the mains outlet nor connected to any electrical device . The only thing the subwoofer is connected to is a pair of satellite speakers and the switch on the subwoofer itself is switched off . What happened is that when i used a electronic multimeter to test the plug ends of one of the speaker cables (a 1/4 inch connector that is meant for the satellite speakers) that is connected to the subwoofer , it shows some currents that averages around 18-22mV and it fluctuates greatly. What I need to know is , if the subwoofer is already at OFF position , why does the multimeter shows some current ? Is there any current generating from the subwoofer at all even if it was switched off for a few years ? The model in question is Yamaha MS50DR .

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Posted on Jan 02, 2017

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SOURCE: Goodmans Amplifier Speakers , Humming, Capacitor wrong way still worked for a year!

Hi, wow...caps of that value usually go boom real quick when fitted back to front. I too am amazed it has functioned that long. Just double check that incorrect screen printing on the board has not tricked you. Have you put your multimeter across the bottom of it to actually see constant reverse DC volts(ignoring the board markings for now). then replace the offending items, just check that the voltage they are being run at is at least 2-3 volts less than 50v rating of the cap. alot of gear runs really close these days and the supply caps fail early, we see alot of it here in Australia where our supply is 240v you see it at the socket alot of the time at 250-255v Hard on gear designed originally for 220v. I would sub the caps out with 63 volters anyway to be sure of some longevity. Good luck, I am interested to know how you go. Let me know please.


Posted on Feb 29, 2008

Agent Jason
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SOURCE: Connecting multiple A/V cables to 1 TV

Hi zantar412,

Yes, there are devices to help you. You should shop for an “RF Modulator.” While the intention of this box is convert an A/V signal to RF for older televisions, many modulators offer multiple inputs which can be chosen with a switch. Be sure to check both the input and output options on the box that you buy to ensure it will be compatible with your components and television.

Thank you,
Go Ahead. Use Us.

Posted on Jun 30, 2008

  • 93 Answers

SOURCE: best hook- up Polk psw10 sub woofer to yamaha rx-v663 receiver

You will not need to y connect your subwoofer, if you have only one RCA sub out on your receiver the other end of the RCA connector cable goes into the left input on most powered subs, there is no loss of signal, the option exist as some receiver do sport a double RCA sub out.

Posted on Feb 12, 2009

  • 1 Answer

SOURCE: need wiring and 9pin connector diagram

Dell (Altec Lansing) A425 Subwoofer Pinouts

This is a standard female DB-9 serial port.
Here are the pinouts.

Pin 1 = Left Speaker Out +

Pin 2 = Left Speaker Out - (Common Ground)

Pin 3 = Left Line In +

Pin 4 = Right Line In +

Pin 5 = Left/Right line In - (Common Ground)

Pin 6 = Right Speaker Out +

Pin 7 = Right Speaker Out - (Common Ground)

Pin 8 = Power A

Pin 9 = Power B

Jumper (short) Power A to B to turn on.
If you want a volume control you need to put one on the inputs. You will buy buy a stereo volume control or potentiometer.
Here is some info on how to do this.


Posted on Mar 24, 2009

  • 1 Answer

SOURCE: Want to use only subwoofer of HK695

The problem is that you need the satallite speakers , they have the volume control on them which thats why you only hear the subwoofer.. yes , i tried other speakers to it and no sound either.So you will need the satellite speakers it come with.. good luck!!

Posted on May 09, 2009

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