Fuzzy TL
| - Tweeter Seas TWS 27-6 (without ferrofluid) - Bass driver Mission CP 168 |
Peerless 830657 Qts .46, Vas 31 litres, fs 45 hz possible substitute
vs Mission CP 168 Qts .4, Vas 27 litres, fs 44 hz
https://www.lautsprechershop.de/chassis/main_en.htm
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I wanted to show the thread starter a modern TML with a rather large driver, that performs like the KEF B139 (or better).
So with the TIW250 or a compareable driver, it should do what he memorizes and a little bit more. Memories often get more impressive over the years... The usual small 16cm driver sure is not what he has on his mind.
The nice thing about this "Fuzzy Style", it seems to reduce the usual dips and peaks of the old, straight TML. These made complicated damping neccesary and took away a large part of the theoretical advantages.
Many of the old builds suffered of wrong placed or stuffed damping. The building instructions always closed like: "The damping show is only an example that may not perfectly work in your room. Try different ways of damping, adding or removing material to your taste." Good luck with that!
I know first hand how this sucked. The shown damping never fit the room. In most cases, to get rid of anoying resonances, they got stuffed with so much wool that nothing of the "endless deed, thundering bass" was left. I never heard a TML that meet the huge expectations the designers/ sellers description had created. I often listened to the legendary Quadral "TITAN", a 2 meter high 115kg TML monster. Even today people rave about. It was just a high-low speaker with anything missing in between. The 32cm /13" woofer had to play up to 400Hz, but the damping removed most of this region and only left some low rumble. Nothing a well working ear would ever want to hear. Anyone who had one, origional or clone, was trying to modify it somehow. A tipical TML of the time.
So with the TIW250 or a compareable driver, it should do what he memorizes and a little bit more. Memories often get more impressive over the years... The usual small 16cm driver sure is not what he has on his mind.
The nice thing about this "Fuzzy Style", it seems to reduce the usual dips and peaks of the old, straight TML. These made complicated damping neccesary and took away a large part of the theoretical advantages.
Many of the old builds suffered of wrong placed or stuffed damping. The building instructions always closed like: "The damping show is only an example that may not perfectly work in your room. Try different ways of damping, adding or removing material to your taste." Good luck with that!
I know first hand how this sucked. The shown damping never fit the room. In most cases, to get rid of anoying resonances, they got stuffed with so much wool that nothing of the "endless deed, thundering bass" was left. I never heard a TML that meet the huge expectations the designers/ sellers description had created. I often listened to the legendary Quadral "TITAN", a 2 meter high 115kg TML monster. Even today people rave about. It was just a high-low speaker with anything missing in between. The 32cm /13" woofer had to play up to 400Hz, but the damping removed most of this region and only left some low rumble. Nothing a well working ear would ever want to hear. Anyone who had one, origional or clone, was trying to modify it somehow. A tipical TML of the time.
Thank you, but this is not helpful. Yes, there are many transmission line speaker plans out there. But this is not what I am asking for.
My question remains: Does anyone here have a catalog from Accurate Sound or plans for their Model 7 loudspeakers?
A problem with the vintage TLS is that they get a big dip around 200 Hz. The HH designs reduce that by having the driver 1/5 to 1/3 from the closed end and in some cases also use a interna Helmholz resonator. An other change is that several vintage design had cornerreflectors to smooth the bends, now they are left unsmothed to facilitate the low pass effect of bends.
Can we assume there were published articles on the kit you are looking for in AA magazine of the 70's ?
If so, there is a website selling AA issues from 1970-1979.
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