Baffel Felt.....

[Big_Bill]

Hello guys! I'm thinking of applying some felt to the front of the baffel, of my 3.5 build to help reduce "jitter", as I havent rebated the drivers (lack of routing skills!). My questions are as follows:

1) How thick should the felt be?

2) What felt material is best suited?

3) How far/shape should the felt extend from the edge of the drivers (as I've seen beard shaped ones!)?

4) What type of adhesive should I use to attatch said felt (Id like an adhesive that could be easily removed from the baffel surface if no noticeable difference is heard)?

Please help!

Bill.

[PeteMcK]

I used some thin felt from the local craft shop around my tweeters, got a nice burgundy colour. Stuck it on with blutack - I'd used a wax finish which made it a bit hard to glue
:-). You might want something a bit thicker if you're trying to hide the edges of the drivers though. At low frequencies it's only cosmetic.

[wintermute]

I'm planning on getting some of this. Apparently the B grade felt is less dense and better for sound absorbtion.

I have flush mounted my tweeters but surface mounted woofers (for time alignment). The woofers are roughly 5mm above the baffle surface so I'm going to use 5mm felt. Will also probably experiment with the star like cuts around the tweeter as seen on some commercial units.

Also considering how to make a grill that meets up with the felt (that is don't make the felt go to the edge of the baffle and have a 5mm thick grill frame that sits flush with the felt)

I'm just planning at the moment not sure how it will turn out so just as interested in any replys to this thread as you will be

Tony.

[planet10]

Best felt is not synthetic... wool or cotton. For outside of a box, wool felt is usually going to have the edge, but the new recycled cotton/denim felt that Bob at CSS is selling (in reasonable quantities) looks interesting for this kind of application.

New Product: Acoustic Insulation

dave

[PeteMcK]

what I've done a couple of times to hide the driver edges (I don't have a routerr) is cut a plywood baffle with holes the outside diameter of the drivers - glue that on the front of the box & it looks like the drivers are recessed. I angle the outside edges at 45deg.
(Router would look better though...)

[Big_Bill]

Hey guys! I thought it all through (as best I could) and just gave it a shot. Here are some pics of the aftermath! What do you think????

P.S. Thats my pal Miller Jackson giving a hand!

[keantoken]

I used PVC electrical tape (which is slightly thicker than electrical tape). Since it's stretchy you can just tape it in a circle and no one will ever know (unless you're not good at taping in circles).

Perhaps not audiophile-grade, I don't know. It was what I had on hand.

- keantoken

[Big_Bill]

Oh, and by the way we used 1/4 inch acrylic felt. It was in a pre packaged bag of felt remnant. It's all I could find at "Michael's" (local craft shop)!

I used this thick clear liquid glue called "Fabri Tack". It claimed to be able to join fabric and wood, and well, it did. It was just a little pricey though, 8 bucks (US) for 4 ounces! Other than that I highly recomend it.

[Big_Bill]

Originally Posted by keantoken

I used PVC electrical tape (which is slightly thicker than electrical tape). Since it's stretchy you can just tape it in a circle and no one will ever know (unless you're not good at taping in circles).

Perhaps not audiophile-grade, I don't know. It was what I had on hand.

- keantoken

Did you notice a big difference in sound quality?

Post Script: Will you post a pic of them?

[Pano]

I've used 2 or 3 layers of thin felt from the fabric store to cover the whole baffle front and edges. Well worth the low cost and a bit of time. Much cleaner sounding.