Need help selecting a driver for my 3 way

[8675309]

I am in the process of building a 3-way tower for my house. I am looking for suggestions on an 8 – 10 inch sub with good build quality, decent low end, and good sound in a bass reflex enclosure.

The setup will consist of a simple first order crossover using good parts. Low pass will be in the neighborhood of 200hz to 300hz

The tweeter is a Fountek NeoCD3.0MS
http://www.madisound.com/catalog/pro...oducts_id=8191

The midrange is a Peerless 4. Not my first choice but I got them in a shipment that was wrong. After reviewing them I believe they will work well for me.
http://www.madisound.com/catalog/pro...oducts_id=1607


I have a budget of $300 give or take on the woofer or subwoofer

[Dave Bullet]

Seas L26 (10" - FS 20, Aluminium cone).

[Rojoh]

I'm also interested in the L26 driver. Same situation; 3-way active loudspeaker. A local supplier suggest a 65l BR-cabinet giving a -3dB at 35Hz. Does this sound like a good choice, or would you consider a different size and tuning? I don't want the bass-section to act like a true subwoofer, but would like to get a good compromise between depht and "speed"/tightness with this driver.

Regards
Johan

[Rojoh]

Found this thread:
Seas L26 musical sub

Regards
Johan

[tinitus]

I do not believe its good to mate a polycone mid with a metalcone woofer
And a ribbon mated with a polycone mid might not be very wise either, but might work though

With just 6db electrical you will get in trouble with any of those combinations

[tinitus]

Well, that was a bit grumpy

When you want 6db, you will have to select drivers very carefully ... and to me it is furthermore an indication that you dont know much about xo filter

I would take a different approach

Get a pair of those very nice 12" Fostex FW305, they are on sale now
Fore mids you could use the Fostex FF125K, cost very little
And the Fountec should be ok with this

Low xo point should be more like 500hz or more, and upper xo point well above 3khz, and you should be able to manage a "6db" filter

And think of the nice efficiency

[tinitus]

BTW... the Hivi RT2II "ribbon"(planar) looks very nice too ... neat and very smooth design ... I guess with very little diffraction

With a bit lower SPL it might be a better match ... less attenuation = smaller resistor = better sound

[8675309]

Well you are quick to bash a design and not give any reason what so ever on why you have come to your conclusion.

My slopes I have chosen are 500 and 5000. This may change once the design is built and tested. First order is very useable! I may not be a professional but I have been working with audio and designs for over ten years now. So I suppose that if you want to tell me that I don’t know what I am doing, fine. But if you want to push your opinion, then back it up with some information and facts.
Grumpy? No. Quick to push your opinion and not back up your opinion? Yes
This is why I hate dealing with forums because there is always a prick that knows everything, but never offers experience or dealings with the information they are trying to push.
If you have built a ribbon, poly, metal, and 6 db designs then explain your findings.
Where people fail to analyze speaker, designs is the fact that everything has to be based on what everyone else is doing. This in all aspects of audio is not true. The other aspect is that all people believe that it has to be 100% high fidelity.
I am going to continue with my design using my 1st order design. I will use my RTA and continue to test the design and work with the design. If it fails I will make changes. But I am smart enough not to rule something out before I try it.

Originally posted by tinitus
Well, that was a bit grumpy

When you want 6db, you will have to select drivers very carefully ... and to me it is furthermore an indication that you dont know much about xo filter

I would take a different approach

Get a pair of those very nice 12" Fostex FW305, they are on sale now
Fore mids you could use the Fostex FF125K, cost very little
And the Fountec should be ok with this

Low xo point should be more like 500hz or more, and upper xo point well above 3khz, and you should be able to manage a "6db" filter

And think of the nice efficiency

[tinitus]

My my, that was not well received

Damn, and I felt so good about it ... I will not suggest anything then

Good luck with your project

[Dave Bullet]

I'm also interested in the L26 driver. Same situation; 3-way active loudspeaker. A local supplier suggest a 65l BR-cabinet giving a -3dB at 35Hz. Does this sound like a good choice, or would you consider a different size and tuning? I don't want the bass-section to act like a true subwoofer, but would like to get a good compromise between depht and "speed"/tightness with this driver.

What size room would you play the L26's in?

Be mindful the L26 only has an xmax of 7mm. I'm choosing it because I don't want deep bass and want to see what a stiff aluminium cone can do for bass compared impregnated paper etc....

I still plan to use my sub with the L26 for the bottom octave. I also reckon getting the L26 down to 40Hz shouldn't be a problem for moderate SPL without xmax issues.

Cheers,
David.