Question about M-Audio StudioPro 4 Main / Stereo Speaker

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M-Audio StudioPhile DX4 4'' Woofer

Woofer sounds to be "blown" but there is no visible sign of damage. When I push it in slightly (while off), I notice some distortion where as with the other speaker there is no noise (as it should be). It's almost as if the woofer has come apart from whatever is centered behind it or maybe rubbing against something else? Any thoughts, tips or even location of replacement woofer would be greatly appreciated! Thank you

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  • jsabers Nov 25, 2007

    having the same problem anyone know how to replace the fuses on some of these bad boys



    thanks

  • Anonymous Jun 02, 2008

    I need to replace the 4" studiophile speaker on one of my dx4 monitors. but I can't find repalcement parts anywhere

  • mortenjohs Sep 21, 2008

    Same problem here, I'm afraid...

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  • 71 Answers

The "voice coil" inside the woofer must be rubbing against the "yolk" plate. Meaning = it is mechanically blown(damaged) to a point but electrically intact.
My sugesstion is to take out the damaged woofer and "google" for a mew woofer with the correct impendance and size and mounting holes. If you dont know thw impendance, then you should go with at least 8 ohms. More ohms = less risk of overloading the amp. whick can cause a fire!

Good Luck!!

Posted on Jun 11, 2009

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Posted on Jan 02, 2017

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1 Answer

How to take the big speaker out of a studiophile BX8 speaker


As you can see, there are 8 screws holding the woofer in. Remove them, lift the speaker up, but before you disconnect it....Mark + and - onto the wires...red + and black -. .http://i46.tinypic.com/14l3j0z.jpg

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No sound out of 15 speaker and only about half the sound out of horn


1. Confirm the woofer is not blown. Remove it and test it by using an AA battery and wire from the battery to the woofer terminals. When connected, the cone should jump. Alternately, if you have a meter, you can measure impedance. Infinity (or no jump with the battery method) means the coil is open and the speaker needs to be reconed.

2. If the woofer tests good, inspect the connections and wires from the input. Ensure there are no breaks. If the crossover includes a PC board, check for cracks or solder breaks and blown fuses / thermal damage. Repair as necessary.

If the woofer tests good and the wiring and connections are sound, reinstall and test. If there is still no sound from the woofer, test it by conecting it directly to the amp. If there is audio coming through the woofer, the issue lies within the cabinet. Consider replacing all internal cabinet componentry, including inputs. If the input is a 1/4" jack, it is likely thae contacts are bent out, away from the connector. Bend them back to center slightly, and clean them with alcohol or "deoxit".



"Half" the sound from the horn seems normal, as it is not intended to produce bass. If you mean half-volume, that is dependent on settings and measurements and is difficult to diagnose. clmrt5000_1.jpg

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Speaker lesson here. For space and time, I'll not get into certain nomenclature. Working from top to bottom, you have the cone, rubber surround, basket, spider, voic coil former, voice coil, and the magnet. The binding posts are connected to the tensil leads which connect to the spider and the voice coil. As the woofer is positively + and negatively - charged, it creates a magnetic field which moves the woofer up and down. There is a small gap between the magnet and the voice coil and former that's called a magnetic gap. This gap is what helps the speaker to move up and down, and creates the Xmax. The Xmax of the woofer is the maximum linear excursion the woofer can travel without causing permanent damage. With a blown speaker, normally the voice coil and voice coil former have been pushed out of the correct magnetic gap, usually around the top of the magnet. That means that the only way to fix it is to take the woofer completely apart. My suggestion is to just go and spend the money. A blown speaker is a sign of abuse, and voids warranties from the majority of companies out there to include Kicker.

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1 Answer

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Does the tweeter keep playing when the woofer cuts out?

It is rare for a speaker to cut in and out, check all wiring connections and if possible connect it to a different amp to test, the amp can cut in and out just like a speaker. Try switching it with another speaker and see if it cuts out aswell.

Hope this helps!

Thanks

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Hi David

The fault may be the bass driver itself or the Low Frequency power amp built into the speaker box. hard to determine which it is because it is intermittent. There are a couple of things to try. when the fault occurs.
  1. just lightly touch the cone on the bass driver see what happens. If it fires up again, it has failed soldering on the spider wire connections from the terminals to the cone. This can be repaired by a decent sound guy the does speakers, or a specialist near you that can be found easily enough. A new replacement driver is also an immediate option if you don't mind spending the bucks.
  2. if the above didn't work, to prove to yourself where the problem may lay, you could swap the bass drivers from one box to the other and see if the fault follows the driver, or remains with the speaker box. If the electronics are faulty, unless you have some decent experience with soldering and fault finding, you may be best to get it to a repair guy,
If you cant get it sorted, please provide me with your location(not address:)) and I will be able to locate a decent guy that knows what he is doing for you. Cheers

regards
robotek

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1 Answer

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Hi ermo

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

regards
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1 Answer

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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

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Sounds to me like the voice coil is damaged. But without hearing it I wouldnt be able to tell you. If the voice coil is damaged there is no way to fix it.

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1 Answer

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You will need to REPLACE THE WOOFER / DRIVER on this unit. Cost for a new driver is about $80.

- DJPA

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2 Answers

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If your monitor is crackling and fizzing, that is not a fuse issue, unless the fuse you have installed is underrated. It sounds like you have a bad driver/woofer, and need to get it replaced. CLICK HERE FOR THE REPLACEMENT DRIVER for this model.

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