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I have a crate Bass amp that is generating a distorted signal from the imput instrument and it will not clear up :what may be causing this condition on this unit?? Cc:Perplexed!!

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Without hearing the distortion, it will be difficult to state with any confidence where in the amp the problem exists. That being said, the most common problem is with the preamp section. Many of these use 4558 chips as the pre-amp section. If hte chip is blown, the sound may still be heard, but it will be distorted. This is easily seen on a scope. The chips can be purchsed in bulk for les than $1, so the parts cost for the repair should be low.
Dan

Posted on Jun 06, 2008

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I have a TNT 115 S that is distorting when i play E string on my bass. What might be causing that?


Please add more information to improve help, does the amp just distorts in that particular note or teh entire sound is distorted? does the amp distorts at low volumes?

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I have 2 kenwood 3011 400 watts rms and 12oowatts peak power each 1 is blown and wonderin about upgrading 2 the Hifonic Olympus OLM1612 would this be a good upgrade even thought i only a 400 watt kicker...


yea for sure thats a good upgrade. You shouldnt havebeen able to blow the kenwoods with 400 watts though-meaning that they probably blew from distortion which causes heat(fast) Check your gain on the amp start it out at 1/4 gain and turn up your deck to the point where you can hear distortion from your mids and highs or to the maximum level that you listen to your music at. If you're jamming out at a level that is causing distortion then you will be sending a distorted signal to the amp as well. The amp then amplifies the distorted signal through the subs which overheat and blow. So find the distortion spot and then turn it down just a little bit till it clears up your sound-then adjust your gain on the amp up slowly until you cant hear it getting any louder. Once you have done that you have reached the limit of CLEAN power that you are going to get.Thats where you want to keep it. Watch the bass boost too if you have the bass up on the deck and then crank up the bass boost on the amp it really f's up the signal too. Good luck

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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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1 Answer

Crate bass amp bt220 limit led is flashing with the volume only at half


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.

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1 Answer

GK 1001 rb speaker overload, is my guess


This problem is not likely to be a volume control problem. There is a transistor inside that is failing (getting noisy) when heated up. If you have no experience with amp repairs, do not attempt this as it is not simple to locate the defective part. Continued use in this condition can cause problems with the speakers. Please have this serviced by a repair shop with experience with GK gear.

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Hi

Go to www.ezrepair.ca and send it to us.
We will diagnose your unit for free and give you an estimate in a 48H maximum period.

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Crate amp blew a house fuse and stopped working. pilot light still works and I can get a distorted signal through the headphones if I play a guitar very loudly through it.


When a piece of equipment causes a fuse to blow or a breaker to trip, it normally means something in the equipment's circuit was shorted. Either because of heat, moisture, a loose screw, loose wire, loose part, a bug, etc. For safety reasons, don't plug it back in and take it to a repair shop.

Hope this helps!

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1 Answer

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check your speakers cables for good condition-no touching between inner wires of each other- after you confirm from good cables condition- try the speakers one by one-make good ventilation around the amp and clean it with air blower-after that if the problem still found contact near service center for help.

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1 Answer

Crate BT50 Bass amp cutting out with high input.


Sometimes an amplifier's preamp can't handle certain signals/frequencies at a high gain, so they cut out. Bass guitars are especially prone to giving such a strong signal.
I bought an older, nonworking bass amp recently and fixed it just to find it had the same problem. Best solution is to put a low ohm resistor at the amps input, but if you turn your guitar down to half volume it'll have the same effect: should prevent it from cutting out.

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