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rattling in center speaker = VERY annoying!

mcflyguy
04-24-2009, 03:36 PM
i just got my surround working everything seems right except my center speaker has this rattling type of sound at certain pitches. it's really annoying. should i take it apart and see if i can tighten up anything on the inside or is this going to require a new purchase? thanks for your time in advance!

kamspy
04-24-2009, 04:03 PM
Could be a loose dust cap. Check the seals on them.


What kind of speakers are they?

PFC5
04-25-2009, 01:34 AM
See my response in the other thread you started, but as Kamspy asked, it always helps when you list the brand/model of any device you need help with. It CAN help speed up the process of helping and to give better advice. ;)

mcflyguy
04-25-2009, 09:39 AM
the brand is "digital research". i'm going to take it apart this afternoon and have a look.

PFC5
04-26-2009, 01:09 AM
the brand is "digital research". i'm going to take it apart this afternoon and have a look.

I am sorry to hear that is the brand:

http://www.ripoffreport.com/reports/0/072/RipOff0072397.htm

http://www.google.com/#hl=en&q=digital+research+speakers+white+van+speaker+scam&fp=RgodfiivdiU

This is one of those White Van Speaker ripoff brands unfortunately. I would not even attempt to fix them as they are junk speakers and can possibly harm your receiver or amp if you use them.

I would not send any more good money after bad to try to fix these speakers. I would plan on replacing them ASAP, and just throw them in the trash. The only other alternative is to gut the cabinets of all components and make a project out of buying all new speaker drivers AND replace the crossover electronics that would mate well to the replacement speakers purchased. Do it as a fun project as the only real usefulness of these speakers IMO.

My brother actually got ripped off by this "White Van Speaker" ripoff too, and countless others as well. Consider yourself lucky that you did not blow your receiver with them as some others lost their receivers by trying to use such speakers.

Sorry to be the bearer of the bad news but don't send any good money after bad by trying to fix these.

kamspy
04-26-2009, 01:29 PM
Those cabinets usually need more bracing too.:(

mcflyguy
04-27-2009, 02:26 PM
daaaaaaamn.

mcflyguy
04-27-2009, 08:00 PM
so how can these speakers ruin my receiver because all of them are theater research/digital research

kamspy
04-27-2009, 10:18 PM
so how can these speakers ruin my receiver because all of them are theater research/digital research

There's a chance.

Joe Las Vegas
04-27-2009, 11:57 PM
Some 3M tape should take care of it, it will make them steady and since the tape is thick it will absorb vibrations...
I know the inside is rattling, but my suggestion might alleviate the problem a bit.

kamspy
04-28-2009, 12:52 AM
The electronics in the speaker may pull unstable loads from your receiver.

White van speakers have blown peoples receivers on many occasions.

I'd say your best bet to get SOME use out of them is to hook them up to an old receiver and use as garage/patio speakers.


The cabinets look pretty nice, and there are websites that sell good drivers that you could change out. Crossovers/electronics too.


If you have one of the nicer looking sets, it may be worth the money to put in new drivers and electronics. Wouldn't be very hard.

But the value would depend on what the inside of the cabinet really looks like in terms of bracing/porting and how thick the MDF is. Also depends how much you like DIY stuff.

If I ended up with a set somehow I'd like to see what kind of monster DIY speaker I could make with the cabinets though.

BowerR64
04-28-2009, 09:25 PM
This is just my opinion so take it as you want. If your amp is critical on the Ohms load, you may want to check that first before you go any further. Use a multi meter and check the load across the 2 connectors.

When you start to put more then one speaker in a cabnet they usualy need to be wired right to achieve the 8ohms most home stereos like. Its when you run lower then 8ohms you start to create problems for the amp/receiver. IMO again, over 8 ohms doesnt seem to bother amps as much as going lower. The lower you go on ohms the closer you get to a direct short and some amps just cant handle the load/heat.

Leaks can cause rattle, leaks around screws, gaps between the cabnet and the speaker frame loose dust caps ive seen cause weird unwanted noises. Also if the screws that hold the speakers in are screws in uneven. Some of the voice coils have just a thin channel they ride in and if you screw in the speakers tighter on one side it can deform the basket in a way that can cause the voicecoil to drag on the magnet.

One way you can single out wich speaker has the issue is to tap on the cone in a circle. Sometimes you can tap on it in just the right way that can cause the noise to happen without the sound on.

Its good to know the limits of speakers. I try to adjust my bass knobs so that when its cranked up i dont get extreme movement from the woofers. Some people who have not been around speakers and audio for very long may not know how they work and think its normal for the cone to jump out of the basket 2-3" and not know this is the damage point for speakers.


I dont see how cheap speakers can damage your equipment if your just careful on how you use it. The tricky part might be when they say they are rated for 1000 watts and they are just rated for say 35watts. If they blow and short then they can take out your equipment. IMO those are the only 2 things that can damage your receiver is a blown speaker wich inturn shorts or changes the ohm load or the complete speaker is wired wrong and its running to low of a load to your receiver.

Those epeakers dont look bad though, but its just a picture.

gameguru1360
04-30-2009, 05:00 PM
you can also try using dynamat extreme to get rid of those rattling sounds inside the speaker enclosure. dyanamat extreme is not just for car audio...it can be used for home theater, inside pc cases and even along air ducts if those air ducts for a/c and heating start causing noises!