Stupid question: How to attach 075 to C38?

[toddalin]

toddalin, terrific, fantastic advice!

The mounting plate is only 3/8" thick, so 3/4" plywood makes much more sense. Do you agree?

RE: woofer mounting kit, clamp set ? ? ?
There had to be a way to attached 15" woofers without drilling. There are 4 holes on the outside of the 15" cutout with T-nuts and 5/16" bolts. So I'd bet my life savings that Madoff is carefully investing for me, that JBL had some type of "clamp" set. Good call, toddalin.

The big questions is: where can I find 8 of these "clamps".
Do you have a creative solution that might work?
I would rather not drill holes into the baffle board. I typically drink 3-5 double espressos before lunch. Then it's martini time.

This is what you are looking for (MA-15). Perhaps someone can tell you where to get them.

[BMWCCA]

The big questions is: where can I find 8 of these "clamps".
Do you have a creative solution that might work?
I would rather not drill holes into the baffle board..

It looks like the holes might already be there, maybe the gasket is what came with the clamp kit:

MA15 Loudspeaker Mounting Kit
The MA15 simplifies front mounting of JBL
380 mm (15 in) loudspeakers and permits
a degree of latitude in the diameter of the
mounting cutout. The kit consists of seal-
ing gaskets, four cast clamps and four
mounting screws with T-nuts.

There are always some on Ebay if you can't find them locally:
http://ebayitem.com/310112807219

I can't vouch for this guy's parts and the ones I've seen use a large Phillips-head bolt, not the Allens his kits have. The clamps appear to be the same though.



These from LH forum member Kenji (Japan) appear to be the real-deal:



Member here, Saeman, might also be able to supply you or give JBL pro a call. I don't know the part number and "MA15" doesn't show up on the parts lists I can find on the JBLPro site.

[grumpy]

you could still order screws, t-nuts, and clamps from jblpro, last I checked.

See part numbers (pg 2):

http://www.jblproservice.com/pdf/Sou...ries/4745A.pdf

clamps -were- less than $3/ea, but that may have changed.

Ah.... and the clamps were no longer painted black... raw metal finish.

[Mr. Widget]

Call JBL Parts (818) 894-8850


I have ordered them with these part numbers before... grumpy's numbers are different, but are the same parts, so you should check out both sets of numbers.

Clamps part #60958
bolts are #73522
T-nuts are #834-44011-00

If they are in stock they will sell you as many as you like... I am not sure what the current price is, but they are quite reasonable... since they are no longer sold painted, shoot them with a can of Krylon Semi-Flat Black like the eBay fellow is doing and you are in business.


Widget

[EddieJ]

I'll call JBL tomorrow and order the clamps. Once I get the drivers mounted, I should probably address the original circa 1960 N2600. I'm afraid to ask: recap or leave alone?

By the time I get these speakers up and running I'll need to bring them with me to the nursing home.

Thanks for all your help. I truly, absolutely, positively appreciate all your suggestions and advice.

[BMWCCA]

I'll call JBL tomorrow and order the clamps. Once I get the drivers mounted, I should probably address the original circa 1960 N2600. I'm afraid to ask: recap or leave alone?

Put 'em together and have a listen. It'll probably sound fine. If you like it, recap 'em later. If you don't, don't waste the time. My N2400s still seem to be working fine but then understand I know nothing about JBLs.

[JBL Dog]

The big questions is: where can I find 8 of these "clamps".

I have 8 clamps with t-nuts, JBL issue. Send a PM if you're still looking. Gaskets are likely available from JBL.

[BMWCCA]

Gaskets are likely available from JBL.

If I just wanted to get them together to hear them, I'd be tempted to just use a removable strip caulk, available locally to most as a 3M product from automobile paint & body-shop supply houses. Some call it "dum-dum".

[EddieJ]

Finally, the 030 system is up and running. Right now I'm listening to Andre Segovia and the speakers sound good.

I want to be sure everything works before I refinish the cabinets, get legs, etc. Tomorrow, I'll gradually crank up the volume and try a range of music, perhaps Wes Montgomery, Cheap Trick and Foo Fighters.

Thanks JBL Dog for the offer, however I ordered clamps from JBL right away. The clamps from JBL arrived today, and they don't look too bad unpainted. I may leave them as is.

The 3 1/8" hole saw was a great idea for the 075. I couldn't find a 3 1/8" hole saw at any of the hardware stores in town. My next door neighbor works with wood and he didn't have that size. A friend who builds homes didn't have that size either, but he gave me a great idea that worked. I bought a 3" hole saw kit and with a rasp make a 3 1/8" hole.

I want to thank all of you for your patience, your suggestions and helping me get my first JBL speakers working.

[BMWCCA]

Right now I'm listening to Andre Segovia and the speakers sound good.

Now try some 'cello!

[EddieJ]

Classical music is quite new to me. How about Bach The Complete Brandenburg Concerti, Otto Klemperer, on vinyl? Any cello in there?

Or Bach: Mass in B Minor. I've got both albums here and haven't given them a spin yet.

Can you suggest a specific album that should sound excellent on these ol' JBLs?

[MikeBrewster77]

Not necessarily cello specific, but quite a few forum members have weighed in on their favorite classical pieces to listen to (on their JBL's, of course ) over at this thread:

http://www.audioheritage.org/vbullet...ead.php?t=8260

Enjoy the music!

Best,
- Mike

Classical music is quite new to me...

Can you suggest a specific album that should sound excellent on these ol' JBLs?