Tuba HT speaker gasket?

[Graphite]

Well, after reading many many and many more pages of build threads, to make sure other people's frustrations didn't bite me...everything is coming together very well. Big big thanks to the detailed builds and wonderful people who shared their experience with us all.

I was looking at myn's Tuba HT build, and noticed the speaker gasket on his sub is HUGE on the face side of the basket. I noticed the gasket on my dayton is non-existant. I was able to find "speaker gasket" material through PE, but noticed it was 1/8" thick. While the speaker myn installed had a gasket of what looks to be about 1/2" thick.

http://www.parts-express.com/pe/showdet ... er=295-468 is the sub recommended for the tuba ht. Notice there is no gasket on the face of the basket.

I understand gasketing is important in keeping the baffle airtight, what are the best ways people are getting this accomplished? Not only that, but is the excursion of the driver going to make contact with the bracing installed without a huge gasket put into place?

Thanks again!

[wounded horse]

I have an omni 2 X 12 bass cab and I couldn't get the fat bottom end I had been expecting. There were bad sounding resonances going on and I suspected leaks. I had looked at the paper gaskets on the 2 3012lf I had fitted and had had my suspicions on the first fitting. They are in 3 sections I think and dovetailed together. What I didn't like was the small amount the gasket protruded over the cast edge of the driver basket - about 2 mm - and I knew the frame was tightening onto the baffle spacer ring. Out they came. I bought for £3 on ebay several sheets of 8mm thick cork sheets. I cut strips on the bandsaw to match the discarded papery things - a touch wider I think - and glued them in with evo stick, . I made new holes with a wood drill bit deliberately tight. The drivers were then re-fitted with a thin bead of clear silicone, building a ring around the 6mm bolts that were nicely held in by the cork as the drivers were offered onto the baffle ring.;I guess vaseline would have done it. The difference? Night and day. Fat, clear bass that projects so far. Now I have to re-do the 8MR mid driver as it sounds honky and thin. I'm bi-amping from a Peavey max pre-amp crossed at 500hz into QSC power amp so there is no crossover or filters and I'm fairly sure the mid driver is compromised on the gasket.

[Bill Fitzmaurice]

Use speaker gasket tape, which PE sells. The plans call for notching the braces where the surround otherwise might contact it. It is odd that the driver doesn't come with a gasket. Many Eminence drivers come with two, just in case.

[Drey Chennells]

I understand gasketing is important in keeping the baffle airtight, what are the best ways people are getting this accomplished? Not only that, but is the excursion of the driver going to make contact with the bracing installed without a huge gasket put into place?

Thanks again!

The gasket is very close to the cast baskets' lip, but once you tighten it down (in a criss cross pattern like an engine head) it's airtight solid. The gasket tape or even a quick bead of silicone around the perimeter (make sure to cure before sealing the chamber), eliminates any question..