What would you do with these 10 " woofers if you would be me ?

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kanaddict

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Joined 2003
#1
Hi all,

I know that there is very experimented speakers builders who participate to this forum. I would need to have differrent point of view about possible use for two (2) Focal 10L6411. These 10" woofer were made for Hales who used them in the Alexandra (arround $25 000 USD). I will mentiona few possibility here and let you bring some wood to the fire (a way to speak) :

1- Build two subwoofer to be used with my actual B&W P4 or with some DIY monitor I'm planing to build later (monitor on the top of the suwoofer);

2- Build two bass cabinet with passive x-over at arround 300hz. Use this cabinet in a 2.5 ways configuration with my actual B&W P4 and later on, with some DIY monitor I'm planing to build (monitor on the top of the bass cabinet);

3- Build 3 ways speakers ;

4- Build 2.5 ways speakers (only one cabinet this time) ;


The specification of the drivers are :

Nominal power handling 150w
Program power handling 200w Ohm: 4-6
Xmax: 8mm
Fs: 22.41
Re: 5.16
Qms: 9.03
Qes: 0.26
Qts: 0.26
Vas: 210.38
Mms: 42.66
SPL: 91.4
BL: 10.84
L: 1.2


If would like to know if you would do sealed cabinets or vented. I don't know what these drivers can deliver in a sealed box. I know that I'm able to get a f3 of arround 37 hz with a ported cabinet.

If you know some good monitor design that would sound better then my actual B&W P4 (TL floor standing, SPL less then 90), please provide me the address.

Please let me know what you think !

Daniel from Quebec :scratch:
 
#5
Actually something more "possible" than the El-pipo might be to build a "regular" TL enclosure for them. I've only heard good things about TLs and am going to try one to compare to dipole bass one of these days.

P.S. it's nice to see all of these quebecers poping up these days, it seems like most of the canadians here are from BC...
 
#6
hum, Here comes another Quebecer's point of view 😉

Why dont you make Alexandra clones? (if you can find any info on that).

If I had those, I'd probably use them in a 3 way crossed at like 200-300hz ...I just plugged those specs in Winisd for vented and sealed ( by the specs, I think it'd prefer sealed anyway) , awsome stuff.

Yhea, Francois's idea is good, as el-pipos dont cost that much to make, you could try it out, if it turns out good, would be great, and yhea, you would need a "toit cathédrale" 😉
 
#7
JoeBob said:
Actually something more "possible" than the El-pipo might be to build a "regular" TL enclosure for them. I've only heard good things about TLs and am going to try one to compare to dipole bass one of these days.

P.S. it's nice to see all of these quebecers poping up these days, it seems like most of the canadians here are from BC...
Click to expand...


I'm around since a lot of time but not posting often. I spend my time in my garage

😀
 
#8
François said:
Tu vas avoir besoin d'un toit cathédral 🙂
Click to expand...

😱 WOW ! At first I was realy wondering why you mentionned those big subwoofer, but at the end I realised that this could be done on a smaller scale 🙂

I'll keep in mind that it's a possible way to use the Focal drivers. If I decide to take this road, I'll need some help to calculate the exact lenght of the tubes.

Thanks for the link !

Daniel
 
#9
Very easy to build and amazing SPL if you have a big amplifier.

A ruff calculation is to take 1/4 the wavelength of the driver Fs. The Fs should be measured with speakerworkshop for better accuracy. You stuff the line to taste.

I am gonna built one but it will be vertical (behind the cough). I need a 10'' x 9' sonotube.

Let us know.
 
#10
JoeBob said:
Actually something more "possible" than the El-pipo might be to build a "regular" TL enclosure for them. I've only heard good things about TLs and am going to try one to compare to dipole bass one of these days
Click to expand...

Yes, a TL is something I could like to try. My main speakers are B&W P4 and they are TL speakers. For their size, they have great bass.

Do you think that the Focale drivers could work well in a dipole configuration ??

P.S. Nice to see that there is a few DYI'er arround here, :idea: maybe we should think about an association or something like that !
 
#12
Ilianh said:
hum, Here comes another Quebecer's point of view 😉

Why dont you make Alexandra clones? (if you can find any info on that).
Click to expand...

Hi MTL DIY'er 😉

Well, there is no information on the Alexandra speakers and they need 4 10" Focal + they are to big for my little listening room. I do nearfield listening and don't need big speaker....just accurate 😉

If I had those, I'd probably use them in a 3 way crossed at like 200-300hz ...I just plugged those specs in Winisd for vented and sealed ( by the specs, I think it'd prefer sealed anyway) , awsome stuff.
Click to expand...

I'm able to get a f3 of 35 hz with a 91 litres vented box, but Winisd give me a f3 of about 65 hz (vb= 32.9, qtc=0.7) when using the optimum button. Please let me know why you think that they would work better in a sealed box. I have a lot to learn :att'n:

Thanks !
 
#13
François said:
El-Pipo is a regular TL and very simple to build but it is HUGE 🙂
Click to expand...


Yes it is ! If I decide to do this project, I'll build a box just like for the original El-Pipo. I want to face the drivers & see how they look great 😉 + I'll be able to use a tube that won't be the same size as the woofers.

Do you think that the box size is important ?

Regards,
 
#14
François said:
Very easy to build and amazing SPL if you have a big amplifier.
A ruff calculation is to take 1/4 the wavelength of the driver Fs. The Fs should be measured with speakerworkshop for better accuracy. You stuff the line to taste.
Let us know.
Click to expand...

What is the formula to calculate the diameter of the tube I would have to use ?

Thank's !
 
#15
What I meant by regular was the normal style of building a TL enclosure, not builders tube. That way you wouldn't need a really high ceiling, just a box with a folded terminus inside.

As for a dipole you could use a three or four foot wide baffle (probably a folded baffle) with a 6db/octave highpass at 20Hz (to equalize the rolloff, not perfectly but good enough, and then drop off around 100Hz).
 
#18
The tube diameter is related to the parameter Sd of your driver. Normally if you have a 10'' driver, you use a 10'' tube. The base of the tube (your box) can be a bit bigger but the end of the tube should match with the driver Sd. You have to remember that these calculation are very ruff and if you really need a good simulation software you should think about visiting these great web site:

http://www.t-linespeakers.org
http://www.quarter-wave.com
 
#19
sfdoddsy said:
I've been using the Focal 10Ls in a dipole recently, and they sound very nice.

They won't go all the way down at reasonable volumes, not surprisingly, although they are not too bad. I found with a 24dB L/R I could stretch them to 40Hz, using two per side.

Here's a shot of the Hales Alexandra, BTW:
Steve
Click to expand...


Hi Steve,

thank's for the Alexandra picture 🙂

Your dipole look great. Last night I started to think about using the Focal's in TL speakers (with sonotube or not) with an open baffle for mid & HF.

Do you think that using only one Seas mid/bass drivers would be enough ?

How low can go one of your Seas drivers when used on an open baffle ?

Thanks for your answer !
 
#20
The question is not how low they go, but how low loudly.

The twin focals will reach the 20s, but not really with enough volume to run them full range, especially with the active EQ I use, I needed the twin Adire DPL12s for that.

I would say a single Focal might get you to 40Hz if you weren't going especial loud.


Steve
 
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