ML-TL from Clarion car speakers...

[audiocologne]

Hello everyone, I´m from Cologne in Germany and new to this board. I have a Clarion 3-way-system incl. crossover network called SE6372 that was not in use for several years, but in former times it performed pretty good in different cars.
I´d like to have it in some sort of enclosure to use it in my motorhome or maybe at home.
TSP not available but they still have a comparable set called SRP1321S, even woofer size is the same - maybe parameters fit: Fs 75, Qts 1, Vas 4.8 liter. They claim freq. range from 40 Hz which is basically pretty good for music, but Fs is tough. So the ML-TL with a 3-way-setup came to my mind. Size is not relevant apart from width of 7" due to the 5.25" woofer size (framed).

Any suggestions more than welcome

[roger_lew]

Hi and welcome.

Sorry to burst your bubble but transmission lines require low qts drivers. There is also no way of getting to 40 Hz if the fs is 75 Hz. I would consider that 40 Hz spec bunk. I'd look into doing an open baffle or a lossy box with a big cap to smooth out the underdamped response.

Roger

[audiocologne]

Hi Roger, in my opinion the ML-TL is something hybrid between TL and bass reflex, with Fb freq. tuned far below Fs (which you can´t obtain from classic TL enclosures).
This horn construction for example has Fs 105 and Fb down to 50, though Qts is 1,15
Beyma 8AG/N horn or "the Viech"
So it looks one can do something with this set of speakers, best kind of enclosure yet to find. Not much experience from my side, but maybe someone else has suggestions. I´m open for every kind of weird construction

[Flaesh]

srp1321 is 5"
have your 3way 5" woofer??

Originally Posted by audiocologne

..TSP not available ..

let measure..
or put in any box with ~car door volume and enjoy listening...
or copy Beyma 8AG/N horn or "the Viech" , or make it 20cm instead 25.......

[audiocologne]

Originally Posted by Flaesh

srp1321 is 5"
have your 3way 5" woofer??

let measure..

Yep, 5" woofer 50 W / 120 W 4 Ohm. Thanks!

[pkitt]

A low-Qts driver often is far more difficult to get to work at all well in a TL and the opposite "fact" you stated is one of many TL myths. I don't know how well the OP's driver wants to reuse will work in a TL, however, especially with not having reliable TS values to use. I've modeled 100's of TLs, building at least 8 for my personal use, while many others have built ones I modeled for them. From my experience, the best overall responses came from drivers having a Qts above 0.3, and definitely closer to 0.4 or higher (but maybe not much above 0.5).
Paul

Originally Posted by roger_lew

Hi and welcome.

Sorry to burst your bubble but transmission lines require low qts drivers. There is also no way of getting to 40 Hz if the fs is 75 Hz. I would consider that 40 Hz spec bunk. I'd look into doing an open baffle or a lossy box with a big cap to smooth out the underdamped response.

Roger

[audiocologne]

And this is basically why I was asking for ML-TL. Or TQWT, or horn. Though broad freq drivers are used most of the time, why not a woofer that isn´t any better from Fs with a high Qts that could be tuned to a deeper Fb?
Considerung the TSP from the later Clarion system (which I don´t expect to be much different from what I have), maybe someone could suggest a basic cabinet

[roger_lew]

Originally Posted by pkitt

A low-Qts driver often is far more difficult to get to work at all well in a TL and the opposite "fact" you stated is one of many TL myths. I don't know how well the OP's driver wants to reuse will work in a TL, however, especially with not having reliable TS values to use. I've modeled 100's of TLs, building at least 8 for my personal use, while many others have built ones I modeled for them. From my experience, the best overall responses came from drivers having a Qts above 0.3, and definitely closer to 0.4 or higher (but maybe not much above 0.5).
Paul

Yeah, I will concede I was ambiguous and perhaps oversimplifying, but Paul from your last sentence one could argue you are perpetuating the TL myth.

But we agree a driver with QTS of 1.00 is probably too high.

Roger

[roger_lew]

Originally Posted by audiocologne

Hi Roger, in my opinion the ML-TL is something hybrid between TL and bass reflex, with Fb freq. tuned far below Fs (which you can´t obtain from classic TL enclosures).
This horn construction for example has Fs 105 and Fb down to 50, though Qts is 1,15
Beyma 8AG/N horn or "the Viech"
So it looks one can do something with this set of speakers, best kind of enclosure yet to find. Not much experience from my side, but maybe someone else has suggestions. I´m open for every kind of weird construction

Thanks for the link. That horn may be tuned to 50 Hz but note it is down 20 dB at 50 Hz. If you are just looking for something unique (weird) there isn't any reason you can't just empirically test enclosures for your Clarions. Before all this software readily available speaker building was a much more empirical process. The downside is that it is much harder to guarantee the results.

Roger

[Flaesh]

oh mein gott! 5" wooofer!
make ~30 l box. tune it 40hz. play with filling.(black & blue curves)
if box will be high and narrow with port at the bottom - it will be ml-tl
In any case, it will work somehow .