Question about M-Audio Studiophile BX8a Speaker
Chris Villines 1 day ago BX8a making loud noises when turned on. I have a BX8a that has suddenly started making very loud noises of all frequencies when turned on. This happens even with the volume all the way down and no audio cable connected to it. I am wondering if anyone has ever experienced anything of this nature with a powered speaker before. I am going to attempt to repair it myself but I am hoping someone could direct me where I should start. My best guess as to why this happened is that I was using a power conditioner to power them on and off opposed to using the power switch on the back of the speakers. I have read that this can be damaging to them with the sudden surge of power. Any help would be much appreciated.
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Posted on Jan 02, 2017
SOURCE: Connect BX8A speaker to PC
First, let's start with the BX8a. Those are powered speakers (built-in amplifier in each) so, you do not need a pre-amp. What you need to connect them to your computer is a 3.5mm to XLR cable OR a 3.5mm to 1/4" TRS cable, also known as 3.5mm to two 1/4" mono plugs (the back of the BX8a has inputs that accept either type). Cables are available at most any electronics stores. Make sure you buy a long enough cable to run from the back of the computer to where the speakers will be.
It sounds that you only have one BX8a which means you'll be listening to only one channel of the stereo output. In any case, make sure before connecting the speaker(s) to the computer that speaker power is off and volume control is at minimum. Connect the 3.5mm cable end to Line Out 1 jack of the X-Fi sound card and either the XLT or TRS ends to the speaker(s) input(s). Play some audio content on your computer, turn on speaker(s) and slowly increase volume to a safe level. Everything should work fine.
Let me know how it goes.
Posted on Dec 28, 2007
Hi rocroc, first, check to see that all the screws are tight that hold the speaker drivers, and panels in place are tight. Loose screws can make a monitor rattle. Access to the internals in powered monitors is often by a rear connection plate, or through the from by removing the woofer. A cosmetic band is often used around the woofer to hide the screws. you will need to carefully remove this before you can get to them. If all the screws are tight, then you may have a problem with the driver itself. best way to check is by doing an audio sweep from 20hz to 5khz with it sitting on the benchout of the box. If it has any weird noises, the voice coil assembly may be loose or damaged. If the "pumping" problem happens with no signal, then you may have a problem with the internal circuitry. Check for loose bits first, and get back to me here, happy to talk more about it.
Posted on Mar 07, 2008
it could be a loose connection or the cone is cracked inside , the only way to find out is to open and take a look inside ,check the connections , the 2 wires from box to speaker, ALSO CHECK where the cone meets with the magnet , hope this helps AJ
Posted on May 14, 2008
Your new speakers are BiAmped, and if a woofer is not working then it is probably a fault in the amp or connection for that woofer, or the the woofer itself has a problem. If they are brand new, I suggest you take it back to purchase point to get sorted out. There is nothing that you can do that will NOT void your warranty. If you do not have a warranty, then get back to me here and we can work through the problem. Cheers
Posted on May 25, 2008
SOURCE: M-Audio BX5a Speaker Problem
Not sure i can help with the led problem but i just fixed a hissing problem with one of my BX5a monitors. It developed a hiss when on (both tweeter and bass) and a very loud thump when switched off. I found a slightly swollen power filter capacitor on the internal board. They are the two biggest black capacitors, labelled as 25v 6800uf. Only one of these was bulging. The tops of these should be totally flat. The indented X on top of the caps make any bulge easy to spot. Worth opening it up and having a quick look. I could only find 35v 6800uf caps at my local electronics store but they did the job ($3 each). I swapped both out and it's now working great. An easy DIY fix, just be sure to always have the power cord unplugged before you put your hands anywhere near the guts of the thing. Hope it helps.
Posted on Dec 06, 2008
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