My DMT 15 Cabinets

[Tenson]

How did you select the port size? It's worth doing a simulation to get the best from it, if you haven't.

They do look very well made, you should be proud. Do you plan to veneer?

If you can get a big enough strong plastic bag to hold the speaker, I have a vacuum pump you can borrow to vacuum clamp the things for a really good veneer bond.

 

[Dev]

What are you using to power them Dev?

Must take a look at that Luxman soon.

It's the Luxman driving the DMTs. I'd welcome you to take a look at the Luxman. Let me know when you're free and we can sort something out.

How did you select the port size? It's worth doing a simulation to get the best from it, if you haven't.

They do look very well made, you should be proud. Do you plan to veneer?

If you can get a big enough strong plastic bag to hold the speaker, I have a vacuum pump you can borrow to vacuum clamp the things for a really good veneer bond.

The port size was suggested by Cooky. I don't have the means to do any simulation. Now it may be too late anyway, since it's glued together.

Thanks for your comments. I'm pleased with them. I had a few issues (the most frustrating one was with the T-nuts) but on the whole I like the way they turned out. I don't plan on veneering them. In spring/summer I plan to sand them and stain/varnish them, with mixed feelings, because I quite like the way they look but all other wood furniture in the room (the whole house actually) is dark wood.

 

[Andy 831]

The port size was suggested by Cooky.

Chances are it will be spot on then, there is not much Cooky does not know about Tannoys.

 

[Dev]

Chances are it will be spot on then, there is not much Cooky does not know about Tannoys.

Yup, he's my guiding light.

 

[kennyjackson]

Superb job, they look really nicely braced. I really need to find someone to make me something better to keep my 15" Golds in.

 

[speedy.steve]

Not been here for a while and missed this thread!

Great job there! Look really good.

I enjoyed 12" DMT's many moons ago so 15" must be well worth the effort.

 

[nortonl]

Fantastic job Dev. You are tempting me to make some floor standing cabs for the DMT12s I bought recently...

There will be a gap of about 5mm between the driver and the brace, filled with bluetac (following advice from Cooky1257).

Ahh yes, that's a good idea. My own experiments with cabinets recently has shown that even a rather soft material can transmit the important low frequencies, which is what you want to couple from driver to the brace. Also Rob tells me Spendor use a soft material to couple braces.

The Tannoy DMTs were made like this at the factory. The user manual says when refitting the driver to Locate the piece of damping material which was pressed between the rear of the HF magnet and the cabinet crossbrace during manufacture. Roll it into a ball and press it onto the centre of the cabinet crossbrace. Not sure if they still sell it, but the Tannoy part no. is 1411 0071.