My Le Cleac'h horn build

[3GGG]

I have had alot of help with this and wish to thank everyone first of all.

I thought it was time to start a dedicated build thread and would love for any advice along the way.

I plan to build a 2/3/4 way system, it will evolve along time.

The first part of the build is finalised and will be a 180hz Le Cleac'h horn, built up of layers of plywood "donuts". This will be driven by the Radian 950PB.
Here is some hornresp info on the horn.

This will coer around 300hz to 1000hz then I will use a TAD 2001 in a 350/400hz Le Cleac'h horn. This horn is yet to be simulated, maybe tonight.

Top end will be a Tad ET 703 with a small Le Cleach horn, but i will try with th 2001 first and see how it goes.

Below 300hz will either be a variant of the Vitavox Bassbin, or possibly a BIG bass horn, similar to those a few french guys have built ontop of their floors, like a stage. I will look at building this into a large "bulkhead" in the ceiling of a custom room, if my plans for a dedicated room ever happen.

[revintage]

Hey Mark,

Doublecheck your figures with Jean-Michels new spreadsheet(No need, just checked it and it is the same). You will see the flare above 180 degrees though. To go beyond will give you somewhat better performance.

Almost certain you can use the horn to 3-4000Hz. Use a 1000Hz LeCleach for the above. Normally a horn is used 3 to 4 octaves.

I have simmed the Vitavox bassbin and it looks no fun at all. Probably because the short horn(half of what it should be) together with the lack of compression. It only goes down to 45Hz at best. I used the 515-8G for simming. The open back is a NoNo, must be a box.

[3GGG]

Thanks Lars

Ill sim a 1000hz horn tonight. Do you have a link for Jean Michels latest spreadsheet?

Regards
Gregg

[3GGG]

Its a baby, the 1000hz horn is 16cm long and 20cm wide.

Cheers for looking at the bass bin, I will rethink below 300hz duties.

[revintage]

Its a baby

It will look even nicer when you remember to choose T=0,8.

[3GGG]

I should know that by now. I read the 100 page plus thread on Jean Michel's horns last night and remember the discussion about this.

Thanks Lars

[revintage]

A "real" 35Hz Hypex basshorn with one 515-8G will not have be more voluminous than the bassbin.

[limono]

Which Vitavox Bass Bin you're talking about, the K-horn type or new Living Voice box?
(my ET-703 ready for storage)

[revintage]

Old CN308. Rw 24 seems to be based on that one but with 2x12" instead of 2x15". Actually the CN308 is close to the same as the Shearer-horn from 1935.

[3GGG]

I was initially thinking of a 350hz horn for the TAD 2001 so I couls play around with the x-over frequencies afair bit.

Is there any disadvantages of usimg a 350hz horn instead of the 1000hz horn on the TAD. I know I shouldnt be concernedd at the looks but that tiny 1000hz horn will look a bit funny above the 1.1 metre horn with the Radian driver.

Limono that horn on the 703 looks fantastic. Can you provide me any details on it.
It is a shame it is going into storage, not into service. :-(