Brahma MKII FI recone problems

[Scoobasteve 10+ year member]

Hi Guys,

I just have a quick question, I recently had my Brahmas reconed by a local installer. I purchased the kits from FI.

Theres a weird popping noise whenever the sub plays above 50hz. If the Lowpass is set at 50 there is no trouble. The sub plays hard below with no noises clipping etc.

As soon as it gets a higher bass hit... say above 50hz the popping or slapping noise starts until i turn it down.

The Setup

Brahma MK2 - in a 2.2cf box ported at 27

Elemental Nine.1

Alpine 9815.

Electrical is fine, Theres a Kinetik HC2400 2 feet from the amp and voltage rarley dips below 13.5.

Any ideas?

Thanks,

Steve

Click to read more...

 

[snoopdan 5,000+ posts]

have you tried to free air it and listen for any irregularities? That would be my first step. If that recone kit you got wasnt the ones with the woven lead spiders then it's highly likely it's just tinsel lead slap (maybe too much slack when it was soldiered on)

 

[NDMstang65 10+ year member]

Dustcap is probably loose..

 

[Scoobasteve 10+ year member]

Thanks Guys,

I've already made sure the dustcap isn't loose, It was recently resealed. I'll try playing the sub free air and report back.

 

[lolumad over 10+ year member]

The problem is that you didn't use an Adire recone. UH DUUUURRRRR.

 

[SPLaudio 5,000+ posts]

my guess is lead slap too or sub isnt sealed to the box. make sure all screws are tight...

 

[lord baccus 10+ year member]

coil breaking loose from Spider ??? i suspect a coil launch in your future