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How do all the input and output Jack's work and what do they do on a crate bx80 bass amp

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Terry

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  • Bass Master
  • 11,377 Answers

Unfamiliar with it, but free manual at the link below might be of some assistance. https://www.manualslib.com/manual/32999/Crate-Bx-80.html
Crate BX 80 Owner Manual

Posted on Oct 25, 2018

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5 Related Answers

Michial Gueffroy

  • 1140 Answers

SOURCE: Changing the output Jack on 1985 Peavey Dyna Bass

If this has active circuitry, one of the wires is the cutoff for the power supply from the battery. The other two are black for ground and either white or red for signal.

Posted on Apr 23, 2009

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Fred Yearian

  • 5603 Answers

SOURCE: Peavey 115 Low hum Low volume from input

The preamp section has a problem. It could be anything in the preamp but is OFTEN the input jack itself. They take a lot of abuse.

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

Additional things are circuit board cracks caused by rough handling and also controls that have had the knobs mashed in which can destroy the potentiometers they are connected to.

Posted on Sep 22, 2009

Michial Gueffroy

  • 1140 Answers

SOURCE: Marshall MG100HDFX 100-Watt Amplifier Head. The

You'll have to take it in to get it repaired. From what you described it sounds like you blew the output stage out. You can't run from your speaker output jack into the input jack of another amp. You should go out of the recording out, line out, effects out or in the least case your headphone out. What happens usually is your output transformer short circuits due to a mismatch of impedances. It sounds like you still have a transformer though so you might have gotten lucky. You will need to take it in though. Sorry.

Posted on Nov 26, 2009

Fred Yearian

  • 5603 Answers

SOURCE: Crate bass amp bt220 limit led is flashing

You can reach the limiting IRRESPECTIVE of where the volume control is set when you have a guitar or other source that has HIGH output.

Guitars that have battery in them with internal amplifiers are an example of a high output guitar. Plain inductive pickups may require the volume control to be set at say 70% to reach limiting.

Please NOTE that the volume control is NOT linear, but is an "audio taper".

Limiting means you are probably driving it too hard. Many learn the hard way when speakers and thee power amp fail.

When the cone is driven too far beyond the pole pieces of the magnet, then the IMPEDANCE of the speaker becomes relatively low and can damage the power amp. The limiter tries to prevent this by sensing the current and or voltage and will back off the gain internally. This causes distortion when it happens.

Posted on Dec 14, 2009

Tim Swiercinsky

  • 1126 Answers

SOURCE: Crate Bass Amp B100 - No sound.

Do you happen to have another speaker that you could hook up to speaker output? This would bypass the amps internal speaker and lf you get sound from that setup, it would mean either a jack failure or possible internal speaker problems. Please let me know.

Posted on Jan 24, 2010

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Have you checked the battery? Put a brand new one, if that's not the problem, take it to a reputable tech.

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Looks like Q24 changes the gain at IC4-A from low with no input jack to normal gain with a jack inserted. Since this appears to be a guitar amp that expects a floating input plug any connection at the input to say, a mixer etc may cause a re-grounding via that equipment's circuits, thus negating the auto mute...... eggs & suck :-) If using a moving coil meter it could upset things.... an interesting fault! Sorry I can't be more help - Good luck!

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http://www.crateamps.com/support/index.php

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My double pick up Dean edge quit working while playing. I checked the wiring and all looks good, but three is s a black wire coming from hole to center of body attached to nothing. Looks like it never was....


Make sure you have two wires soldered to the output jack on the bass. having a wire lose is not purposely put like that, for no sound from the bass then that wire is either from the pickups and connects to the pots on the bass or on the output jack. I would suggest taking it to an authorized dean dealer to inspect the wiring.

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The next time it stops, unplug the cable from the guitar and touch the tip of the connector with your finger. If the amp hums, then the amp is still working and the problem is in the guitar. If there is no hum from doing this, then the amp has am intermittent.

Try this before it fails to see what to expect in the way of the hum from this test.

Common problems with the amp are OFTEN with a broken input connector or bad switch on the preamp output jack if it has one.

There are MANY other things and without troubleshooting it is hard to steer you to a fix.

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I have a crate cpb150 amp i want to connect it to my digitech gsp2101 via livewire stp-202 cable what is the correct way?


I can understand your confusion... and a lot depends how you are going to use this. There are some caveats regarding the connections,
If you use the 1/4 outputs on the GSP, there is a speaker modeling like function that is NOT available, that IS available IF you use the XLR outputs.
The STP is an "Insert Snake" which is not really what you want as it is intended to send and receive (audio going both directions in the cable.
If you want that speaker function, then you should get two XLR to 1/4 TRS cables and go from the XLR's on the GSP to the Left and Right inputs on the back of the Crate. Your audio or guitar then is connected to the GSP guitar input.
If you connect the guitar to the crate and then use the STP, Plug the TRS single connector into the Left/Mono/send/rtn on the Crate. The Send cable of the Y should go to the Send jack on the back of the GSP and the return should go to the left return jack of the GSP. This connection I would NOT recommend as it will be noisier and you will lose the stereo effect capabiltiy since the effect is inserted as a mono.

I believe you would be happier with using the XLR's to carry left and right to the Crate and run your inout to the GSP. In short, you have the wrong cable to do the best job.

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1 Answer

Crate Bass Amp B100 - No sound.


Do you happen to have another speaker that you could hook up to speaker output? This would bypass the amps internal speaker and lf you get sound from that setup, it would mean either a jack failure or possible internal speaker problems. Please let me know.

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Run a jack from your guitar to Input R Mono on the pedal.
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