Love or hate speaker cabinets I made for Tannoy MG 15's

[Denzil]

Blimey..... you get a whole load of teak veneer from a baulk of timber that size!!!! LOL.

Seriously, what a pleasure to see cabinets made with REAL timber to such a level of quality. I sincerely hope they sound as good as they look.

Well done, beautiful job. . .

Thanks !

[Denzil]

Lovely, nice choice of cloth. Nice doggies too.

Hahaha

[Papa Dee]

As already stated..very little chance of hating them.I love them just for the sheer thought and effort that went into making them.You knew exactly what you wanted and luckily had the skill and resources to make your dream come true..well done..congrats..Dee

[Denzil]

As already stated..very little chance of hating them.I love them just for the sheer thought and effort that went into making them.You knew exactly what you wanted and luckily had the skill and resources to make your dream come true..well done..congrats..Dee

Thank you !

[hornucopia]

I like the picture where one of the guys is INSIDE the box!

[killie99]

Curious how long it took them to make them. I'm guessing in the UK it would take someone several weeks and probably cost north of £5k for the carpenters time plus the material - not even going to hazard a guess as to how much a lump of teak that size would cost in the UK!

[Denzil]

I like the picture where one of the guys is INSIDE the box!

[fatmarley]

Yes, this is actually a work in progress. I was luck to finish building the cabinets just before lockdowns, etc. However whatever further experimental work I was to do has now come to a standstill. I was to remove the port pipes to check how it would sound like as a simple Aperiodic cabinet (with vents but no port tuning). And also as you suggested, check what it sounds like with no shelf felt, to work like a simple ported cabnet. But I haven't had the opportunity to do that due to Covid restrictions. They are heavy, difficult cabinets to handle without sufficient help. I tried what you suggested, plugging one, two and all three ports. The bass reduces but the overall sound quality deteriorated a lot even with one port closed. I'm not sure why. It appears that these speakers really need to breathe. But once I experiment with removing the felt on the shelf. And also later with removing the tuning tubes, I'll let you know my observations. BTW, I'm a complete novice ! I did a couple of months of reading before I decided on this design. But I have no experience with speaker cabinet making whatsoever. I'll try and experiment with all you have suggested, post Covid 19 !

Thanks again for your feedback. Much appreciated.

Denzil

It's well worth experimenting, but it's very difficult to know what's going on without modelling and measuring, as well as listening.

Here's a graph showing the Monitor Gold 15 in a 172ltr ported enclosure. The grey line is with 3 ports 3" diameter x 5" long, the black line is with 2 ports. As you can see you lose a bit in the all important 60hz to 100hz region when you block a port.



Here's the 172ltr enclosure again with the 3 ports (grey line again), The Black line is 116ltr but with only two ports (if you don't block a port the peak just moves up in frequency). You still have the all important 60hz to 200hz but that nasty peak at 40hz is gone.



I can also model aperiodic, but It's only really any good for a high Q driver in a sealed enclosure that needs the bass peak reducing.

[Denzil]

Curious how long it took them to make them. I'm guessing in the UK it would take someone several weeks and probably cost north of £5k for the carpenters time plus the material - not even going to hazard a guess as to how much a lump of teak that size would cost in the UK!

It took us around 60 days from start to finish. We actually used two logs of teak. When we started cutting the log you see in the picture into planks, we found the centre of the log (the hollo core of the trunk of the tree) bigger than expected. So I had to but a second log, not as big as the first one.

Denzil

[fatmarley]

Ok, scrub that lol - Aperiodic seems to work very well at reducing the peak with the ported Tannoy.