Mids making a slapping noise

[JeffM 10+ year member]

I have a set of Rainbow Germaniums, mounted on a custom MDF baffle with a layer of modeling clay between them. At higher volumes, the mids make a odd slapping like noise. I have the HPF set at 100, with a slope of -6db, And they are only getting ~75 watts of power, so its not due to being over powered. Anyone have any idea whats causing this? Should I remove the modeling clay?

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[TeoTorriatte 10+ year member]

I have a set of Rainbow Germaniums, mounted on a custom MDF baffle with a layer of modeling clay between them. At higher volumes, the mids make a odd slapping like noise. I have the HPF set at 100, with a slope of -6db, And they are only getting ~75 watts of power, so its not due to being over powered. Anyone have any idea whats causing this? Should I remove the modeling clay?

Are you sure it isn't just getting over powered? Is your slope adjustable, or are you stuck at 6 dB? From my experience, a 6 dB/oct HPF just isn't enough for most midbass drivers... I had much better results going with 12 or 18dB.

 

[FoxPro5 5,000+ posts]

Probably tinsel slap. Temporarily e-tape the leads down to the spider and see if the issue is resolved. If so, use something like hot glue or silicone to make permanent.

 

[JeffM 10+ year member]

Probably tinsel slap. Temporarily e-tape the leads down to the spider and see if the issue is resolved. If so, use something like hot glue or silicone to make permanent.

What is tinsel slap? I noticed that the tinsel leads on one of the mids wasnt making complete contact with the cone.

 

[XaznKewLguyX 10+ year member]

What is tinsel slap? I noticed that the tinsel leads on one of the mids wasnt making complete contact with the cone.

its when the tinsel slaps the cone when moving. you can use some hot glue to glue it down

 

[JeffM 10+ year member]

Heres a picture of the the tinsel lead. Would that cause a Tinsel slap?

 

[nismos14 5,000+ posts]

I would definately try a steeper slow, maybe 100hz 12db or 80hz 24 db if you can.

 

[mk_ 10+ year member]

I use modeling clay and it works good, I doubt its that.

 

[JeffM 10+ year member]

My headunit is a premier 780, and I think it only has 2 slopes, 6 or 12 db.

 

[SRim23 5,000+ posts]

are you sure the mid isnt hitting your door panel?

 

[RAM_Designs 5,000+ posts]

judging from that pic, it definitely seems like a tinsel slap issue...those things are long and very close to the cone.