bad noise from one of the speakers and ohms question

[jaross]

so there is a bad scraping noise coming from one of the kevlar speakers in my B & Ws. If I push gently on the cone I can feel it rubbing compared to the other one. Is it blown? Is there anything I can do aside from getting a new one?

Also, as far as ohms go; as long as my amp is the same or more then the speakers I shouldn't have a problem, right?

 

[ParadigmDawg]

Yep, woofer is blown. Got to buy a new driver.

If you push any speaker too hard you will have a problem no matter what amp you have and what ohms the speakers are.

 

[Adam]

I can't answer your first question, but:

Also, as far as ohms go; as long as my amp is the same or more then the speakers I shouldn't have a problem, right?

The lower the impedance (in Ohms) of a speaker, the more current an amp has to supply. So, you want the rating in Ohms of your receiver to be the same or lower than that of your speakers. For example, if your speakers are rated at 4 Ohms, then you would want an amp that could handle 4 Ohms or lower (e.g. 2 Ohms) - not an amp that was rated at 8-16 Ohms.

 

[jaross]

I can't answer your first question, but:



The lower the impedance (in Ohms) of a speaker, the more current an amp has to supply. So, you want the rating in Ohms of your receiver to be the same or lower than that of your speakers. For example, if your speakers are rated at 4 Ohms, then you would want an amp that could handle 4 Ohms or lower (e.g. 2 Ohms) - not an amp that was rated at 8-16 Ohms.

so the only danger of running an amp with higher ohms is burning out the amp (not a big deal for the amps which I have) or could I harm the speakers?

 

[Rickster71]

Generally speaking, if you don't listen at high levels, you won't have a problem.
So if your setup is for background music, I wouldn't worry.
Knowing the impedance curve of your speakers would help too.

 

[Seth=L]

The Matrix 804's have a minimum impedance of 4 ohms, nominal 8 ohms according to a spec sheet Adam found on another thread by the OP related to these same speakers.

Yes, your midrange may be damaged. If it is making a bad noise while playing music, it definitely has a problem. It may be possible to have them rebuilt, which could be more cost effective. Where do you live? I'm sure someone here has the resources to find the nearest speaker repair shop in your local area. I would assume that replacing the midrange could be as costly as the tweeter replacements. These speakers might start costing you some money after all.

 

[jaross]

Generally speaking, if you don't listen at high levels, you won't have a problem.
So if your setup is for background music, I wouldn't worry.
Knowing the impedance curve of your speakers would help too.

I would like to listen to them much louder then just background noise.

The Matrix 804's have a minimum impedance of 4 ohms, nominal 8 ohms according to a spec sheet Adam found on another thread by the OP related to these same speakers.

Yes, your midrange may be damaged. If it is making a bad noise while playing music, it definitely has a problem. It may be possible to have them rebuilt, which could be more cost effective. Where do you live? I'm sure someone here has the resources to find the nearest speaker repair shop in your local area. I would assume that replacing the midrange could be as costly as the tweeter replacements. These speakers might start costing you some money after all.

Im in southwest colorado. I always figure if I cant get them up to par I can probably atleast re-sell them for more then I paid.