Question about Behringer K3000fx 300w 4-channel PA Keyboard Amplifier

2 Answers

Sound is distorted at certain frequency / volume what would cause this?

Posted by on

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

More infornation is required to provide a real answer, but I can give you a few possibilities:

1) There is a problem within the feedback loop that is allowing some frequencies through. This will be more prevelant at higher volume levels.

2) If there is a tube pre-amp section, the tube can be "microphonic". This too is generally more likely at higher volume levels.

3) Defective components in the amp section. These may pass some DC voltages that will sound like distortion.

If you can, please experiment a little to try to find when the problem is most obvious. With more details about when the problem occurs may give us enough info to determine the cause. Otherwise a trip to a service shop that has access to test equipment will be required.

Dan

Posted on May 21, 2011

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

  • Expert
  • 93 Answers

Is the problem noticed at low frequencies only? If so, a rubbing speaker might be the cause.

Posted on Dec 07, 2014

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a peavey renown 400 while playing bar chords at 3 to 4 on volume amp will get loud and distorted on its own never shuts off though. but only happens bar chords 7th fret and above.mind baffling


Could be a few things, most simple the Tubes, and or biasing, I have had a few amps that certain notes or chords would cause harmonic distortion within the tubes, and the tubes where good? Another possibility is the output transformer? Sometimes when they are failing the volume varies... hope this helps?

Mar 04, 2015 | Peavey Music

1 Answer

Marshall MB4410, with low volume gives no real volume,


Guitar amps have preamp sections (think unpowered audio mixer) and power amp sections (Crown rack-mount amp). An excellent way to isolate audio problems if amp is still producing audio is to check the preamp out (line out). Preamp output distorted = preamp failure. Connect MP3 player to "Power Amp In"...sound distorted = power amp failure. In your case the latter is the case as your "line out" is clean. Also test each speaker for clear sound as speaker cone damage from being overpowered is fairly common. At 300w. I'll assume the failure was not from cranking the volume to loud but a shorted speaker or speaker wiring could zap the power amp in an instant.

Jan 06, 2014 | Marshall MB4410 Bass Combo Amplifier

1 Answer

Hi folks...I have a Behringer HA 400 Micro Amp. My question is: as I am a bass player/guitarist. Can I put my bass or guitar through this device. I understand that it will accommodate 1 instrument at a...


You can put just about any instrument through any amp. The difference in sound will be whether or not that amp was designed for the particular frequencies of that instrument. Also whether or not the speakers you are using are designed for those frequencies. When playing bass you need speakers designed to carry low frequencies (40 - 400 hz); mid-ranges and tweeters don't cut it. Set your instrument volume on the guitar at 70 - 90 % to get the most signal from the instrument. Set output volume on the amp at 50 - 70 %, then adjust gain on the amp to get required sound level. You're not likely to blow the amp, but you could blow the speakers if the amp delivers more power than the speakers can handle. With a micro amp check the output rating. It's possible you may not have enough power to get the sound you want and as you turn up the gain the sound will distort.

Nov 04, 2017 | Music

1 Answer

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?

Sep 05, 2013 | Peavey Electronics Peavey Tour Tnt 115...

1 Answer

Hello i have just bought a new fender 212r amp and i have gigged with it for around a month now. I have noticed that the amp keeps cutting out towards the end of the second set which never ever...


Numbers on volume controls mean very little as there are too many things that affect the level. If you are really driving it hard you may be causing the amp to go into thermal limiting. This is a 100 watt amp so there is a limit. The sound level from it probably can easily exceed legal limits. You should get and use a sound meter. If the amp can create 100 Db that is all you need. If you stay in that environment over a few hours, you are a candidate for hearing aids in the future. I know several musicians that are in this condition and now are wrecked. Remember that loud does not equate to QUALITY... Your group should have a sound level meter and with that you can tell if the amp is performing as it should. One thing to be careful of is high frequency feedback, even that above what you can hear that heats up the amp with frequency output you are not using. Make sure your guitar cannot "Hear" the amp. Also be careful of boosting the high frequencies. Also be careful of large bass pulses that you can see drives the speaker cones to the limit. If the cones move too far, the voice coil leaves the active magnetic area causing excess current and amp heating. Make sure there is free airflow around the amp and especially the heat sinks.

May 07, 2011 | Fender Frontman 212R 100W 2x12 Guitar...

1 Answer

I have a jackson dinky DK2. what is happening is that on certain frets, like the 13th, 14th, 15th fret on the 2nd string (B string),when playing with slight drive or distortion, the note does not sound...


The frets MAY be worn or the neck truss rod MAY need adjustment, Neither of these is DIY unless yiu have experience in repoairing guitars. Since this is only on the 2nd string, inspect the frets for wear and the only DIY thing to try is to replace that string... DO that first !!!

Oct 15, 2010 | Jackson Dk2m Dinky Electric Guitar

2 Answers

I just got this bass and am getting speaker pop at low frequencies, any ideas of what is causing this? All other frequencies sound great.


If you are driving the speaker too hard it will pop. This caused when the voice coil is driven mostly beyond the pole pieces of the magnet. Without the magnetic field the back EMF of the voice coil drops off and the current shoots up. The voice coil can't move farther so there is a discontinuity of movement which causes a pop.

200 watts is a lot to put into a 12 inch speaker so you have to be careful to not drive low frequencies at excessive volume. It is both very hard on the amp and doesn't do the speaker any good either.

If you want loud lows, you should get a subwoofer of at least 15 inch speaker to handle the lows.

Aug 04, 2010 | SWR Workingpro 12 200watt 1x12" Bass Combo...

1 Answer

When playing notes on the A string I get a crackeling noise


Just a thought:

If you used the speakers with another amp and they still make noise when you play certain frequencies, then it is obviously a problem with the speakers or the cabinet - it could be a mechanical resonance in some part of a speaker / cabinet, something like a loose screw or a nut, loose protection mesh on the speakers that resonates at certain frequencies, possibly a bad speaker or a speaker membrane...

Also, you might want to check the pickups on your guitar, see if the pickup core slug under the A string is much closer to the string than the other slugs so it is either picking up too much signal and distorting it or the string might be touching the slug when you play it and cause noise, also see if the string is touching something else when it vibrates...

good luck

3rq8 (Triarcuate)

Sep 08, 2009 | Fender Hot Rod Deluxe Guitar Combo...

2 Answers

Alesis SR-16 distorted sounds


The distorted and low volume output plus noise is usually caused by using the wrong power supply adapter. The Alesis SR-16 takes a 9V "A/C" supply not "DC". The A/C supply provides a negative voltage swing which wouldn't exist with a DC supply. So check and make sure you have 9V A/C output supply not DC.

Nov 18, 2008 | Alesis Sr 16 Stereo Drum Machine

Not finding what you are looking for?
Behringer K3000fx 300w 4-channel PA Keyboard Amplifier Logo

166 people viewed this question

Ask a Question

Usually answered in minutes!

Top Behringer Music Experts

Michial Gueffroy

Level 3 Expert

1138 Answers

Ben Armstrong

Level 2 Expert

357 Answers

Are you a Behringer Music Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...