Which Tannoys, folks?

[Reffc]

"The Gloucester".

Doesn't quite have the same ring as "Cantebury", "York", or "Lancaster"!

What seems to suit it better is "Bismark"!

[Marco]

Looking good, Paul!

I'm going to add a small brass plate with the name of the loudspeaker at the back. trouble is, I haven't thought of a name yet....could this be an AoS competition I feel coming on?

Great idea - if you want, we could run with that

Marco.

[Tarzan]

Updated pics of the internal sloping base and bracing now completed for one of the cabinets.





Got the other one to do then the back panels will be glued into place. I'll be sealing and painting the rear panels rather than veneering. They'll be finished in a high gloss piano black finish. I'm going to add a small brass plate with the name of the loudspeaker at the back. trouble is, I haven't thought of a name yet....could this be an AoS competition I feel coming on?

Tannoy - Dagenham and Redbridge?



On a more serious note will these be available commercially Paul?

[Macca]

Doesn't quite have the same ring as "Cantebury", "York", or "Lancaster"!

What seems to suit it better is "Bismark"!

You could have a whole range named after WWII German warships - Graf Spee, Tirpitz, Prinz Eugen. Except none of them came to very good endings.

Seriously though I am really enjoying following this build. I guess I am not the only one whose lack of a workshop and the necessary skills preclude me from doing something similar. Particularly like the measurements being used to match the speakers to the room they will live in. That really is the optimum way to do it IMO.

[jandl100]

So - a seriously poorly back and recent surgery ... and your building a pair of 75Kg speakers which will inevitably need a lot of moving around ...

A name? Hmmm .... how about "The Dursley Dreadnought" or "Spinal Suicide"

[Reffc]

Thanks for all the feedback folks. To answer a few questions:

On a more serious note will these be available commercially Paul?

If they work really well, then it would be a good thing to offer others the chance to own a similar pair, but they'll have to perform well. I wont offer them if performance is anything short of excellent.

Looking good, Paul!

Quote:
I'm going to add a small brass plate with the name of the loudspeaker at the back. trouble is, I haven't thought of a name yet....could this be an AoS competition I feel coming on?
Great idea - if you want, we could run with that

Marco.
Yesterday 21:33

Thanks Marco, appreciated. I like the idea that after so much work, they deserve to be named! I'm currently looking into musical associations which haven't all been done before (like "Concerto" for example). If they work in harmony with the room, then "Reference Harmony" would be apt if a little twee!

Having a few tuning issues at the minute and now tempted to reduce the ports to a single port but have a few available for in room running at EBS 28Hz (F6 response) and 32 Hz F3 tuning. Seems the sensible way forward rather than use the twin ports which model quite peaky at the Alex Garner suggested tuning.

[Reffc]

Some more progress. Back panels completed and glued in, panel painted in black and two coats 90 sheen lacquer applied. Cut out at base is where the removable panel for the crossover and binding posts goes.




Same detail, other cabinet:



Spent part of this afternoon lengthening the ports for EBS tuning by using some PVC pipe couplers glued to the ends then used a heat gun and a plastic handle from a hand tool to form flares on the entry into the ports. Once completed, the rest of the afternoon was spent priming the inside of each cabinet for the bitumen sheeting. A particularly smelly and messy job! Insides now sealed:



A picture of yours truly standing next to one of the cabs to give a little scale!



Tomorrow will be spent fitting out the internals. The front baffles are now laminated and veneered. If I get time, they'll be cut for the drivers and ports tomorrow. Looking good for completion of the cabinets next week.

[walpurgis]

They're beginning to look very posh Paul!

[Reffc]

Some more progress. Spend the entire day getting the internal damping in place. Fitting the bitumen sheeting was a filthy job. Went belts and braces and used 10mm industrial staples in case it ever thought about peeling itself off again!

Used 12mm dense wool felt around driver chamber, top and bottom panel (on top of the bitumen), then 40mm acoustic foam and finally, a 35mm layer of Monacor lambswool/BAFF around just the central area where the driver will be. This wont impede airflow to the vents which will be located below:

Fitting out the central chamber:



Damping sheeting all in and wool felt glued into place:




Close up of damping layers:




Central chamber fitted out with lambswool/BAFF:



Front baffles now veneered but unfortunately the magnets (6nr) can be quite clearly seen beneath the veneer which is a shame. As these have been bookmatched and I dont have enough veneer to re-do them, I'll just leave as-is. Holes for driver (rebated hole) and ports have yet to be cut. The underside of this 24mm slab of ply has been laminated with 6mm MDF with cut outs for the braces:



Should have the speakers completed by Wednesday.

[anthonyTD]

Excellent workmanship!
Cab profile look very similar to some of the later Kef designs.
A...