4344 Project

[saeman]

Here's some pics of my second 4344 cabinet going together. I thought some of you guys might like to see the puzzle pieces going together. I missed the opportunity to get pics on the first cabinet. Thought I'd post these in a separate thread, rather than cluttering up Ian's 4343/4344 thread. If the mods determine that they are better placed in that thread then please move the info there. More when I get them covered with veneer. Rick

[saeman]

4344 pics-2

[saeman]

4344 Pics-3

[saeman]

4344 Pics-4

[saeman]

4344 Pics-5

[jbl4ever]

Hi Rick, looks like your using inch and a quarter P.B. Look better than factory
Do you live in Illinois

[Uncle Paul]

Nice work! What technique did you use to cut out the relief for the horn flange?

[Ian Mackenzie]

Rick,

Outstanding!

I think you should publish a book about building JBL loudspeaker enclosures.

Ian

[saeman]

Rick,

Outstanding!

I think you should publish a book about building JBL loudspeaker enclosures.

Ian

Thanx Ian: If you see enough of them, and I'm sure you have, after a while it's not too hard to figure out how they go together. I just make hand drawings of every cabinet I have the opportunity to see and go from there. Regards - Rick

[saeman]

Nice work! What technique did you use to cut out the relief for the horn flange?

I use plexi templates and a router to cut all of the baffle holes. After the 4 1/4" horn hole is cut thru the baffle I just layed a larger template over the hole on the back and cut the recess for the flange (1/4" deep). JBL did this on all of their monitors that were built with a 1" P.B. baffle - 4340, 4341, 4343, 4344, that I know of.

[jandregg]

The horn in front of the flange on the h91 is only .5 inch deep. Is it longer on the horn your using. From the picture it looks like you left 3/4 inch.

John

[saeman]

The horn in front of the flange on the h91 is only .5 inch deep. Is it longer on the horn your using. From the picture it looks like you left 3/4 inch.

John

Hello John: I'm not sure what kind of H91 you're looking at but 1/2" is less than all that I have seen. The H91,H92, 2307, etc were designed to mount on a 3/4" baffle with no recess (Olympus, Sovereign, 4333's, 4345, 4350, etc.) and when mounted there is usually about 1/16" from the face of the horn to the face of the baffle. That would make the face-flange dimension about 11/16". Mount the same horn in a 1" baffle with no recess and there would be interference with the horn's dispersion. JBL obviously felt this was unsatisfactory or they would not have gone to the trouble to cut the recess. All JBL cabinets that I have seen/measured using a 1" P.B. baffle have the recess cut 1/4" deep with 3/4" material left to support the weight of the horn/driver. Cutting it deeper is a bit risky - hanging a heavy horn/driver on a thin P.B. surface. This problem led to their practice of providing a metal hanger/support bolted between the driver/horn and the cabinet interior (L200, 4345, 4350, others). If anyone has seen something different, please speak up.

Happy Holidays!!!

Rick

[Ian Mackenzie]

You have not told us what your doin for crossovers yet!

[Uncle Paul]

Rick,

Beautiful job! The camel grille cloth was an inspired choice. I wouldn't have thought it would work, but seeing is believing. The rosewood you use in your projects always has beautiful figure and tones. Where do you get your veneer?

[ngccglp]

I use plexi templates and a router to cut all of the baffle holes. After the 4 1/4" horn hole is cut thru the baffle I just layed a larger template over the hole on the back and cut the recess for the flange (1/4" deep). JBL did this on all of their monitors that were built with a 1" P.B. baffle - 4340, 4341, 4343, 4344, that I know of.

Hi, is it poss to post some pictures of the templates and router and how you did it?

Thanks