Reverse Sagg

[jleaman]

Does any one know what causes revers sagg in a speaker ? I know when you build a speaker IE subwoofer and fire the driver down it will sagg in that direction But mine they sit normaly and it is saggin inwards.. Does any one know why this happens. ?

 

[pinkmouse]

What kind of drivers are they? If they are cheap, they likely have weak suspensions, a cost cutting method of getting a low Fs

 

[jleaman]

There not cheap drivers there 125us each. only one did it none of the others.

 

[simon5]

It could be a negative DC offset... or a manufacturing problem.

 

[soongsc]

There not cheap drivers there 125us each. only one did it none of the others.

Swap bwteeen left and right amp channels, if the sagg stays with the driver, then it's a driver coil alignment problem, if the sagg stays with an amp channel, then it's an amp problem.

 

[jleaman]

it's not the amp it's the speaker

http://www.briangt.com/gallery/album04

see

 

[soongsc]

it's not the amp it's the speaker

http://www.briangt.com/gallery/album04

see

Are these used or new? Are you the first hand owner?

 

[jleaman]

second owner but the first owner was very good one. Ive never seen this before either.. Weird.

 

[soongsc]

Is it stuck in that position? Or does it move with the sound? Does it bottom easily?

 

[jleaman]

It stays that way at all times. And it never bottoms out i never really push my speakers.. I dont need sound to be loud i listen at a nice level..

 

[soongsc]

When you push on them, do they feel the same by the finger? (use two fingers to push at the edges of the VC cap, not the middle)

With very low frequencies such as an organ, you won't need much to get them moving.

At the VC end of the cone do both drivers have the rear suspension located at the same location? (can't tell from the pictures)

 

[Bill Fitzpatrick]

It pretty clear to me that the one has had a new surround incorrectly installed.

 

[soongsc]

It pretty clear to me that the one has had a new surround incorrectly installed.

You're right, one does seem to have the rubber rim beneath the cone instead of on top of it.

 

[ScottRHinson]

It stays that way at all times. And it never bottoms out i never really push my speakers.. I dont need sound to be loud i listen at a nice level..

Bill is right, one has a surround installed incorrectly, but I'm not sure which. I don't have any HDS peerless at the moment, but my CSX 7" have the surround on top of the speaker cone, like the woofer on the left.

Question? On the woofer that sags...where did the dent come from? That could easily have something to do with it. It's also the one with the surround under the cone (which I would have thought pulled the cone outward...)

Scott

 

[jleaman]

The dent was a accedent when the boxes were being transported. The driver with the cone on top of the souround is the sag one that is the only one that has the rubber like that all the others are on top.. Im going to replace te\he driver...