Karaoke Scene's Karaoke Forums
https://mail.karaokescenemagazine.net/forums/

amp or speaker problem
https://mail.karaokescenemagazine.net/forums/viewtopic.php?f=1&t=20760		 Page 1 of 1
Author:  Big Al [ Sat Jan 01, 2011 10:44 am ]
Post subject:  amp or speaker problem
I have a speaker or amp problem with my home system was playing music and singing last night when the sound all of a sudden became very "for lack of better term MUDDY" it seems to have lost all of the top end everything is very muffled especially the vocals and highs. have disconnected everything rebooted the computer checked all connections and now am at a loss.
Author:  letitrip [ Sat Jan 01, 2011 2:32 pm ]
Post subject:  Re: amp or speaker problem
This could be an issue anywhere in your signal chain. Start at one end, probably the computer end and go through each step to try and isolate the problem. From what you describe, my guess would be a bad cable. An amplifier issue is a possibility, so is a blown horn (although only if it just stopped working altogether, which isn't very common). Check the audio coming out of the source first, check your cables, etc.
Author:  mckyj57 [ Sat Jan 01, 2011 2:33 pm ]
Post subject:  Re: amp or speaker problem
Big Al @ Sat Jan 01, 2011 1:44 pm wrote:
I have a speaker or amp problem with my home system was playing music and singing last night when the sound all of a sudden became very "for lack of better term MUDDY" it seems to have lost all of the top end everything is very muffled especially the vocals and highs. have disconnected everything rebooted the computer checked all connections and now am at a loss.

I doubt anyone can help you with that little information to work with. We deal in model numbers, component descriptions, etc.

If it was a home stereo system and you were "pushing" it a bit, you might have blown the speakers like I did on my home stereo. Which is why people here constantly recommend you don't use your home theater system for karaoke vocals.
Author:  Lonman [ Sat Jan 01, 2011 3:22 pm ]
Post subject:  Re: amp or speaker problem
I'd put all my money on a blown tweeter or crossover - very common to blow those singing karaoke using home stereo equipment - start getting into the party mode, volumes tend to get a little higher, then a little bit more, then *POOF*. Not recommended to use home stereo/theater for singing through.
Easy way to check is to take the tweeter out of the speaker box & run the leads to a AA battery (+ to +, - to -), if the speaker makes a pop sound, it's good and the problem lies elsewhere - which then I would check the speakers crossover - possible it has a protection circuit - usually a small light bulb on some systems.
Author:  Bazza [ Sat Jan 01, 2011 3:45 pm ]
Post subject:  Re: amp or speaker problem
Lonman @ Sat Jan 01, 2011 6:22 pm wrote:
I'd put all my money on a blown tweeter or crossover - very common to blow those singing karaoke using home stereo equipme


I would concur. Sounds like Karaoke induced failure to me.
Author:  RLC [ Sat Jan 01, 2011 3:53 pm ]
Post subject:  Re: amp or speaker problem
Bazza @ Sat Jan 01, 2011 5:45 pm wrote:
Lonman @ Sat Jan 01, 2011 6:22 pm wrote:
I'd put all my money on a blown tweeter or crossover - very common to blow those singing karaoke using home stereo equipme


I would concur. Sounds like Karaoke induced failure to me.



Why do you and Lonman assume he was using a home stereo system?

In a previous thread the OP posted he has just came back from GC with 2 mrx 515 jbl speakers and a crown xls 2000

I agree with Letitrips advice on starting from the source and check the whole signal chain first.
Author:  Lonman [ Sat Jan 01, 2011 4:02 pm ]
Post subject:  Re: amp or speaker problem
Yep forgot what he stated he just got in the other thread and assumed home stereo - my bad. Still putting money on the horns (or speakers protection circuitry) myself. Same scenerio, probably (me assuming again) was getting into the moment & turned it up too loud - the amp (really not enough clean power for the speakers rating) most likely went into clipping & popped the driver or crossover. You don't (or at least I have never experienced) an all of a sudden loss in high end and 'muddy' sound from a bad cable - the problem has always been found in the speaker itself. This is where i'd personally start, then work my way back if that is not the problem.
Author:  Big Al [ Sat Jan 01, 2011 4:07 pm ]
Post subject:  Re: amp or speaker problem
sorry about not being specific on the equipment. I am waiting on the mixer to come in for my new system so thanks for noticing the new purchase:). This happened on an older system that I have, Peavy HTC 115 speakers, BMB mixer/amp. We bought this for the house from a radio station, it was originally purchased in 1995 and not used very much. It has been working fine for about a month now, then it started to have "dead" spots when music was playing, then went to the muffled sound totally. You can still hear the music, however it sounds like it is in a tunnel or far off and there are no highs to it. Thanks again for all the help with this.
Author:  Lonman [ Sat Jan 01, 2011 4:16 pm ]
Post subject:  Re: amp or speaker problem
You sure the Peavey model numbers are correct? I can't find any info those models HTC115 nor 115HTC (that you listed in the other thread.
Author:  Big Al [ Sat Jan 01, 2011 4:50 pm ]
Post subject:  Re: amp or speaker problem
looked again, 115HC II is what is on the speakers...
Author:  Big Al [ Sat Jan 01, 2011 4:53 pm ]
Post subject:  Re: amp or speaker problem
ok, update... started with the computer, ran it through different speakers without amp, sounds fine. Ran amp through different speakers , sounds fine. now on the cables. These cables came with this system and were twisted. Can that cause this? We do not have an extra set of wires to switch these out. Is there a way to tell by looking at them?
Author:  Lonman [ Sat Jan 01, 2011 8:04 pm ]
Post subject:  Re: amp or speaker problem
Big Al @ Sat Jan 01, 2011 5:53 pm wrote:
ok, update... started with the computer, ran it through different speakers without amp, sounds fine. Ran amp through different speakers , sounds fine. now on the cables. These cables came with this system and were twisted. Can that cause this? We do not have an extra set of wires to switch these out. Is there a way to tell by looking at them?

Doubt it's the cables. Still staying with the blown high drivers or speakers protection circuitry popped.
Author:  letitrip [ Sun Jan 02, 2011 7:20 am ]
Post subject:  Re: amp or speaker problem
Sorry, based on your equipment purchase I had assumed this was completely different equipment than what it is.

First thing to try is to see if the problem is on one side or both sides of your PA. To do this, pan all mic and input channels on the mixer to first the left side then the right side. See if both sides sound have the same problem.

If you can isolate it to one side, then you can easily determine if its the speaker by swapping the speaker cables at the speaker end. If the problem changes sides when you do this, it's not the speakers that are at issue. To check the speaker wires/cables, swap them entirely between the two sides (at both the amp and the speaker side). Now if the behavior switches sides then you know that the speaker cable is shot (not likely but possible). If the behavior still stays on the same side then the problem is your mixer/amp.

If the problem is on both sides, I'm going to guess it's a speaker issue because you said new speakers sounded fine running through the amp. Did you use different cables for those speakers? If you did not then the cables are definitely fine. It would be odd for two cables to stop working at the same time anyway. Most often you can't tell just by looking at cables if their bad unless something came physically apart at a connector. The easiest way is if you have a cable tester. Otherwise you can use a multi-tester that has a continuity tester and check for continuity across each conductor of the cable.
Page 1 of 1 All times are UTC - 8 hours
Powered by phpBB® Forum Software © phpBB Group
https://www.phpbb.com/