Cabinet Plans for Tannoy HPD 385

[cooky]

This comes from the K-series constructor guides from Tannoy.

Already shared this with John but may be of use to others;

For HPD 385 follow 3838 recommendation;



Obviously you'll need to adjust driver cut-out to suit.



Frank

[JohnJo]

Thanks Frank, favourite at the minute is a slight variation on II, an Arden sized cab which would sit on my stands. Probably 800 x 600 x 450 mm using 25mm plywood all round with a 500 x 500 sub baffle to give a recessed look to the driver and a bit more strength at the front. Should give a net volume of around 150L.

Is there any merit going for marine ply over hardwood ply?

My driver is rear mounted to the baffle in my current cabs so I’ll need a new gasket to go between the baffle and the rear of the driver for these new cabs, what’s best for this, industrial compressed paper gasket material or some sort of foam?

[cooky]

Thanks Frank, favourite at the minute is a slight variation on II, an Arden sized cab which would sit on my stands. Probably 800 x 600 x 450 mm using 25mm plywood all round with a 500 x 500 sub baffle to give a recessed look to the driver and a bit more strength at the front. Should give a net volume of around 150L.

Is there any merit going for marine ply over hardwood ply?

My driver is rear mounted to the baffle in my current cabs so I’ll need a new gasket to go between the baffle and the rear of the driver for these new cabs, what’s best for this, industrial compressed paper gasket material or some sort of foam?

This stuff is great;http://www.bluearan.co.uk/index.php?...emode=category

Baltic Birch would be my choice, and glue the driver cut out(s) to the rear panel(old JBL/Yamaha trick). If you can I'd go for the 165L, if not the porting will need a bit of adjustment.

[JohnJo]

Cheers for the gasket link.

Internal dimensions of II are 866x609x318mm=167.7L not sure where Tannoy got 175 from.

My 800x600x450 exterior gives 750x550x400 internal =165L so virtually identical.

I was reckoning on 150L net by the time you subtract a bit for the bracing and the driver basket, is that reasonable?

[cooky]

Cheers for the gasket link.

Internal dimensions of II are 866x609x318mm=167.7L not sure where Tannoy got 175 from.

My 800x600x450 exterior gives 750x550x400 internal =165L so virtually identical.

I was reckoning on 150L net by the time you subtract a bit for the bracing and the driver basket, is that reasonable?

Yeah 175 must be a typo, I got 165L by doing it quickly in my head. You should be fine.

[Marco]

Hi Frank,

Would Macca benefit from this, with the HPDs you sold him?

He still hasn't got any cabs sorted yet.

Marco.

[cooky]

Hi Frank,

Would Macca benefit from this, with the HPDs you sold him?

He still hasn't got any cabs sorted yet.

Marco.

Not really Marco. 3833/36, different drivers so not without different tuning.

[JohnJo]

Can’t be accused of rushing into this, a year and four months later!

Actually the Lockwoods have been sounding rather good of late following a bit of tinkering but I I spied this the other day and had a Baldrick moment.

4F51A456-0A79-4892-B61F-41A42FCD5FCF.jpg

[JohnJo]

A bit of jiggery-pokery turned that into these. Idea is to spend as little as possible to see if it’s worth investing in a proper cabinet build. These are rough as but definitely serviceable. Tomorrow will see install of cross bracing, internal damping and maybe even get the mounting holes drilled and drivers fitted.

No idea why this photo is sideways. Really miss photobucket but there’s no way I’m handing out £90 a year or whatever it is.

B5F102F0-58A2-42AB-8BD5-EDEB965833DB.jpg

[walpurgis]

Try using Imgur.