Question about Bass New Rms 40 Watt Bass Guitar Amplifier

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Rms b80 bass guitar amp has little volume in the low side jack , hi side jack is fine just not as much bass

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The low in side jack has a lower vol. but should only be1/4 less than the high in jack on most amps, --try this,-- plug guitar in high in then take all the treble off and 1/2 mid. range bring up bass range and if you have equauzation bring down 26k 5k 10k about 2 notches or points. See if that give you better bass tone.

Posted on Dec 10, 2013

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Posted on Jan 02, 2017

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I have a Fender Deluxe Active Jazz Bass thats makes this really really loud buzzing earthy sound. It seems to happen spontaneously, in fits and starts, but particularly if the cable input on the bass is...


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There is an inconsistency in your text. You indicate that cables were swapped and problem still existed...
You said:... "i have tried using it on a different amp and still fine".

If you tried it on a different amp and it was still fine then the guitar is probably OK.

THEN your amplifier is in question as the root of your problem.

What is the amp you have? The guitar is the CB-42, but what amp do you have?

MANY intermittent problems with amplifiers are often with the input jack itself. These jacks are easily broken by tripping over a cable plugged into them.

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Also the insert jack contacts that forward the preamp to the power amp if no external FX are used can go bad.

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I just fixed my bass amp with a similar problem last week: the problem is related to a loose connection on the PCB board (likely).
A bass amp is a rough place for circuitry: the low rumble and power shake a bass amp more than a guitar amp.
In my case, the power transistors needed to be re-soldered and then the grounding bolts and screws needed to be removed and cleaned because the connection was bad. Remember that when two different metals needed for an electric connection are toughing, there is the likelyhood that corrosion WILL happen.
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Hope that helps!
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