Dual Loaded Table Tuba by a Teenager

[subharmonic]

In the future used a carpenters square on both sides of the straight edge, double checking before you clamp it. Then you will never need the rasp as it will be square before you send it to the tablesaw.

[Bruce Weldy]

You need to build you a circular saw sled for the cross cuts that won't fit on the table saw. Even without a sled, you can clamp down a straight board to run the saw next to.

[bassmonster]

Quick question here, after reading this quote from this thread.

I've had the Recex screws tear out of 1" Arauco ply while tightening them to compress the gasket on a new driver.

That much pressure can bend or even crack a frame. I take the screws tight, let the gasket compress for a half hour or so, then re-torque them before attaching the back, never with more torque than a standard screwdriver will provide. First generation Deltalite II had solid neoprene gaskets that were a PITA, as they'd take forever to fully compress, but those are history. Current Eminence gaskets are either solid cardboard or neoprene faced cardboard and don't take long to settle in.

This worried me a bit, as spinning a hurricane nut or damaging my drivers is one of my greatest fears in building this cab, right next to leaks after closing up the cab. The GTO's "gasket" is made of a hard black rubber, that takes quite a bit of finger pressure to compress even minutely. It doesn't seem like it would hold a perfect seal against the pressures of a horn, but what do I know? Here is a macro shot of the JBL GTO804.



Thankfully, they've included some sort of foam gasketing material.



For those who have used the GTO804 or anything else in the GTO series (Gregory East? Petegt?), did you find the included gasket material to be fine? How did you mount the driver?

[Gregory East]

I think the gasket material is supplied in case you front mount.

Your rubber gasket looks a little different to my 1014D as I recall, being rounded off where I think mine was square profile. It feels hard to the touch but it's really thick, so it squeezes when you wind in the bolts. Opposite idea to a really long rubber band stretching more than a short one of same gauge.

Biggest problem I had was the overall thickness across all the cast alloy and rubber, stretching to reach the nuts with the length of bolts I had.

[bassmonster]

Received the driver mounting hardware kits from Leland today. I have never seen nuts and bolts so impeccably or creatively packaged. Surely simple nuts and bolts don't need packaging protection, but it's all in the name of good business I suppose, and good business it is.

[Harley]

Surely simple nuts and bolts don't need packaging protection

Let me take a guess at this one.

If I send nuts and bolts type inventory to a customer, I package them very well, not to protect the articles but more so to protect the box the the articles are contained in. Boxes get strewn around in courier vans and delivery trucks and small heavy items will easily damage the inside of the box and make their way out if they are not carefully contained.

[bassmonster]

Hmm, good point. The whole thing wasn't really that heavy, not even a pound total I bet, so I assume the box damage would be minimal as long as it wasn't tossed around violently. The box was actually a Colgate toothpaste shipping box, +1 for recycling on SpeakerHardware's part. The packaging protection was recycled shredded paper, another +1 for Speaker Hardware recycling. They were contained in a plastic baggie, of course for the reason you mentioned about the package getting damaged and little hardware falling through the cracks, rips, and tears. Me posting this just proves that even thoughtful packaging process goes a long way with customers.

[Gregory East]

Are your bolts long enough?

[bassmonster]

Are your bolts long enough?

They seem to be. The non-threaded part of the bolt is long enough for the beefy gasket on the JBL driver. The threaded part is about 1/2" to 3/4" long, should be plenty long enough I assume.

[LelandCrooks]

The box was actually a Colgate toothpaste shipping box, +1 for recycling on SpeakerHardware's part.

My wife is a dental hygienist.

The packaging protection was recycled shredded paper, another +1 for Speaker Hardware recycling.

I have 20yrs of paper from my other business to shred. I scavenge everything I get in for packing. If green is cheap, that's me.

[88h88]

What particular version of Colgate does Leland use?

[Harley]

What particular version of Colgate does Leland use?

This is BFM Control to Major Leland
You’ve really made the grade
And the papers want to know whose shirts you wear

[bassmonster]

What particular version of Colgate does Leland use?

According to the box, Colgate Sensitive Pro-Relief.

More progress later today.

[bassmonster]

Got more panels cut today, all using the same rip fence width as recommended. Drew the outline of the driver and its mounting holes on Panel 3, will continue on through this week, though I expect slow progress due to school.

[Tom Smit]

What particular version of Colgate does Leland use?

This is BFM Control to Major Leland
You’ve really made the grade
And the papers want to know whose shirts you wear

Just don't you dare leave the capsule yet!