Question about 3Com SuperStack II advanced RPS (662705388786) 100-Watt Power Supply

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Feedback from bass amp

This is my problem! my bass overdrive pedal makes my amp feedback! i dont know whats causing! is it something to too with EQ on the amp or gain or level on the overdrive pedal! the amp is a fender bassman 250 and a boss overdrive pedal! help

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Re: Feedback from bass amp - 3Com SuperStack II advanced RPS (662705388786) 100-Watt Power Supply System Power Supplies

First check capeciter in rectifier stage.

Posted on Dec 07, 2007

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Have an electric run pellet fire what size car or truck battery to run for 8 hours 520 watts

You'll need a 600W (Minimum) 12 to 240V Inverter as in the link below.

As for the battery you will need 44Amps of Battery Power for every hour you want to run the equipment (this is without any losses from the inverter on inefficiency from the battery). You would therefore need as a minimum 2 x 200Ah 12V Batteries connected in parallel for something like your 8 hour duty. You'll also need them to be this sort of size so that they can supply the high current for a long duration. i.e. a 44Ah Battery would not supply 44Amps for 1 hour.

Hope this is OK and please leave feedback.



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Got a astec sa302-3505 power supply . . . need to know how do you add a switch to turn it on if its not connected to the motherboard

Simple, Just connect a switch to Green wire and one of black wire.
When the green wire got connected with negative (Black wires are negative) the SMPS Fan starts which is also a visual feedback to you that SMPS starts.

----------------------O /
Grean /

So simple..

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1 Answer

Amp turning off

protection mode,,.amp getting hot? have you got your settings proper on not having the gain cranked? Is it drawing to much from your vehicle electrical.all possibilitys. make sure u have all wires connected correctly and tight.

Sep 20, 2009 | 3Com SuperStack II advanced RPS...

1 Answer

Loud popping sound coming from Bass guitar

if the battery is in the same cavity as the pots and toggles, the battery if not insulated could be grounding out on one of the hot leads or lugs on the pot. i usually cut out a thin piece of foam to cover the electronics from the battery and wrap the batter in electrical tape. that pop is a grounding type noise, there maybe a bad solder joint as well. maybe the tone capacitor is not soldered in well.

Jan 09, 2009 | 3Com SuperStack II advanced RPS...

1 Answer

When I plug in my bass into my bass amp I can't hear it

Your best bet would be to take it to a guitar shop, or guitar center. Its a real ***** to mess with stuff like that when you dont know what the hell your doing. Could also be your instrument cable, try using a different one just to make sure thats not the problem.

Jan 07, 2009 | 3Com SuperStack II advanced RPS...

1 Answer

Bass amp power's on but blows speakers

There is a problem with your power cicuit board that causes high current to pass throught to the speaker's PC Board circuits. Ask a technician to troubleshoot the PCB circuit for defective components.

Nov 09, 2008 | 3Com SuperStack II advanced RPS...

1 Answer

Bass tone problem

Both of your problem amps were made in the '70's or earlier. It is entirely possible that the coupling capacitors are failing. This is an issue for a service center whether it is caps or something else, like failing tubes.

The good news is that installing metalized polypropelene capacitors will make those classic amps sound incredible.

Nov 04, 2008 | 3Com SuperStack II advanced RPS...

6 Answers

Bass amp for guitar?

i say it can! u would get a nice clean sound! acoustic guitar sounds nice through a bass amp!

you probably wouldnt get distortion out of bass amp though! depends on the bass amp! some bass amps have built in effects! e.g distortion

Oct 15, 2007 | 3Com SuperStack II advanced RPS...

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