Sub break-in question

[dragonrage 10+ year member]

Elaborate for us all?

If they can't figure out how to keep their spider attached, that's their fault. I've never seen that issue before. I don't run SPL brands like DD. But the subs I do/have run do still have over 20mm peak Xmax, so it's not like I'm in the minor leagues here.

If glue alone isn't enough then they need to put a metal lip that the outside ring of the spider will slip under.

 

[slim2fattycake 10+ year member]

I guess I have never had to deal with a ****** glue job.

 

[Chriszle 10+ year member]

I have personally seen a DD 9515G take 3500RMS @ 30 hz tone (well under box tuning) and it took well over 2 minutes straight to bring it down. And that is after 2 full seasons of competing/demos no recomes. I think they know how to assmble their subs.

 

[slim2fattycake 10+ year member]

you got clamp numbers? if not, your example is worthless.

 

[Chriszle 10+ year member]

If you ever felt a fresh DD 9500 brand new out of the box, you would probably understand why they recommend breaking it in to loosen up the suspension. I also think cooling can become a factor when your pushing a lot of power and the sub is not moving to keep the coil cool.

 

[dragonrage 10+ year member]

Again, I will fully admit that I have not played with DD stuff. It is not my kind of subwoofer. The SPL they can do does impress me, but that's not the goal of my system.

From the pic, I fully believe that DD could do more to prevent that. Like I said, if they were to put a metal lip for the outer ring of the spider to slip on, and also give more surface area to glue, I think that problem would be much less likely to occur.

Yes, it would cost them more, but their stuff already costs a bazillion dollars. They practically owe it to us/you guys who do run their stuff.

 

[Chriszle 10+ year member]

I will look for the actual video of them doing it, but here is a vid of the system. It is David Pate's from Synergy Audio. I'm sure the video of it is around somewhere. He's upgrading to the Z motors, and wanted to see what the 9500s would take.

Synergy Audio (Synergy Audio ~605-886-5104~) on Myspace

 

[slim2fattycake 10+ year member]

I mean I have dealt with the level 5 soft parts on the level 4 motor and i gave it 3k from the get-go and it didn't have a problem. I guess I haven't played with that stiff of subs then.

But the more power you give it to in the right box, it should move more and so cooling comes into play so I don't see the problem besides cheaping out on the soft parts or labor.

 

[Chriszle 10+ year member]

I am sorry I found the video, and my memmory was slighty incorrect. They ran it at full tilt for a minute straight at 20 hz. Then burped them between 20-30 hertz for several minutes.

Synergy Audio | Facebook

I do not feel the need to show you clamped numbers. Their TL scores will show that the power is there, as the truck hits 158s on music.

And, that was only 1 dying out of the 4 after that kind of abuse.

 

[mossberg385t 10+ year member]

That looks like a bad glue job that will bound to happen if you "broke in" the sub or not.

how so? the basket was sanded the spiders were CA'd and covered with 2 ton epoxy

 

---------- Post added at 04:31 PM ---------- Previous post was at 04:30 PM ----------

 

Again, I will fully admit that I have not played with DD stuff. It is not my kind of subwoofer. The SPL they can do does impress me, but that's not the goal of my system.
From the pic, I fully believe that DD could do more to prevent that. Like I said, if they were to put a metal lip for the outer ring of the spider to slip on, and also give more surface area to glue, I think that problem would be much less likely to occur.

Yes, it would cost them more, but their stuff already costs a bazillion dollars. They practically owe it to us/you guys who do run their stuff.

thats not a DD sub *******

 

[Chriszle 10+ year member]

Yeah, thats fine, but the Lvl 5 motor is way stronger (and the SPL version has a tighter gap), and the coils will not stay as cool if the sub is too stiff to move.

 

[mossberg385t 10+ year member]

my sub breaking is entirely my fault 3 stiff spiders not broken in + 4500rms does not result in happy glue joints

 

[dragonrage 10+ year member]

thats not a DD sub *******

Okay, so we're constantly changing the brand we're talking about, then? How am I supposed to know when we're talking about DD and someone just posts a picture of a spider?

Personal attack necessary there? What is it with people on car audio forums and immediately resulting to personal attacks?

 

[Chriszle 10+ year member]

Here is a pic of the amps, so you can be sure that the power is there...

Pictures by clhunt3199 - Photobucket

 

[Phoenix Risen 10+ year member]

he was showing that as an example of why to break in a sub, which is what the topic actually is, especially considering the op isnt running a dd.