Baffle mounting 2405 slots?

[robertbartsch]

How do these drivers mount to a baffle?

Are these supposed to use a special mounting bracket or do you use long bolts that are threaded into the slot cover?

Thx...

[hjames]

How do these drivers mount to a baffle?

Are these supposed to use a special mounting bracket or do you use long bolts that are threaded into the slot cover?

Thx...

They have a rounded/square faceplate with 4 threaded holes - you can mount them against the inside of your cabinet and use screws through the baffleboard to hold them tight on the inside face like the 4341 below. That's factory style in all the newer big monitors, and it seems JBL mounts them so the face is flush to the front baffleboard. I think they are beveled-head 8/32 screws if memory serves, but check before assuming I'm right

[toddalin]

Easy way is to just use ~3/4" long wood screws just smaller than the threads and just shorter than the tweeter/baffle and screw them into the baffle from behind leaving no marks on the front.

Certainly makes for the "cleanest" looking installation, (though I'll probably catch he now for not doing it the JBL way).

[John]

OK, Todd you asked for it.

[Rolf]

[macaroonie]

Robert if you check this thread out you should be clearer about the process

http://audioheritage.org/vbulletin/s...d+box+building

From post no. 44 onwards

[toddalin]

Robert if you check this thread out you should be clearer about the process

http://audioheritage.org/vbulletin/s...d+box+building

From post no. 44 onwards

Way too much effort!



Simply use a 3-1/8" diameter hole saw.

[Mr. Widget]

Robert if you check this thread out you should be clearer about the process

http://audioheritage.org/vbulletin/s...d+box+building

From post no. 44 onwards

That is essentially how I do it, except that I've made a larger template to use with my router so that it is easily clamped to the baffle.

The beauty of mounting these with the machine screws through the baffle as JBL has intended is that removal for repair is a snap and the mounting is quite positive.


Widget

[4313B]

That is essentially how I do it, except that I've made a larger template to use with my router so that it is easily clamped to the baffle.

Yep

[toddalin]

Actually, it would appear that JBL has no problem with using wood screws from the back as specified in their own literature.

http://www.lansingheritage.org/image...-c41/page1.jpg

[Mr. Widget]

Actually, it would appear that JBL has no problem with using wood screws from the back as specified in their own literature.

http://www.lansingheritage.org/image...-c41/page1.jpg

I don't think anyone said that wood screws were wrong, they just aren't as good or as convenient as the machine screws.

BTW: The example you showed is for the earlier mounting rings before JBL designed the newer tapped design... but why are we going on about this anyway?


Widget

[toddalin]

I don't think anyone said that wood screws were wrong, they just aren't as good or as convenient as the machine screws.

BTW: The example you showed is for the earlier mounting rings before JBL designed the newer tapped design... but why are we going on about this anyway?


Widget

I know that they were untapped. It's only that it was in fact done by JBL so is an acceptable way to mount the tweeter. (I sure that 4313B is grinding his teeth about now.)

What confuses me is the recommended hole diameter.
JBL specs the tweeter hole at 3-3/16" or 81 mm.

I used a 3-1/8" 79 mm hole saw and the tweeter slides right in with space to spare. It would seem to me that that extra 1/16" is all "slop."

This is valuable info to anyone about to drill this hole and wants a good fit.

[toddalin]

OK, Todd you asked for it.

Someone has got to keep things lively.

[Robh3606]

Call me lazy but I just bring out the 3 1/8 hole saw bit. Just drill a pilot hole to get it started.

Rob

[4313B]

I sure that 4313B is grinding his teeth about now.

Nope, I just feel sorry for you is all.

Call me lazy but I just bring out the 3 1/8 hole saw bit. Just drill a pilot hole to get it started.

Rob

The templates are especially useful on larger baffles and multiple runs. Some of the templates are as big as the baffles themselves and have all the cutouts and bolt holes lined out.

but why are we going on about this anyway?

Boredom? Tied to a chair in front of a keyboard?