The large speaker is simply the woofer section that supplements the satellite on top of it. In other words, it's a 3-way system but with the midrange/tweeter in a separate enclosure.Don't want to take this thread off track but curious about the large speakers that are under the speakers you are discussing. Love the look of them and am curious what they are.
I have only used the original C6 crossover.JimPA, When I install the Gefco drivers in my C3L cabinets I'll need to change the crossovers to the C6L design. Do you recommend implementing the design you discussed above?
Just noticed it uses a different gauge and type conductor for the inductor. Is this an off the shelf item?
I have only used the original C6 crossover.
L1 18 gauge air core .35mh
C1 6.8 mfd cap.
Tweeter R1 2 ohms and R2 15 ohms.
Midbass Zobel 2 mfd cap 10 ohm resistor.
I have yet to try the later one Dan Stanley informed me about.
Knowing Shayne it probably sounds very good.
Yes the voice coils have to be wired in parallel.I finally installed the Gefco drivers. The drivers are dual voice coil and I assumed they needed to be connected parallel. I still need to modify the crossover. Audibly, the mid-range is way too prominent.
Jim,Back in 1979 Fried was discontinuing his use of all the Kef drivers.
I have only seen photos of the Kef 8" driver used in the model H subwoofer.
When Fried came out with the B-2 satellites for use with the H subwoofer is when he switched to Dynaudio D-28h for the tweeter.
He also switched the 5.5" driver to the Dalesford.
He also made the H two separate units and used the Dalesford 10" which he called the model T.
I don't know of any source for new old stock anywhere.
Falcon Acoustics is making new Kef B110 units like the ones used in the Ls3/5a.
The price is up there for the new drivers.
I do have plans for the Fried C3L transmission line model which I have built quite a few pairs of.
I also have the crossover plans for using the Silver Flute 6.5" with the Hiquphon tweeters hiquphon.htm if you wanted to build a pair.
Some people claim the Silver Flute 6.5" performs as well as the Vifa P17WJOO 6.5" woofer.
The Vifa driver was renamed after Vifa was bought out by Scan Speak
The C3L plans are on post #19.Jim,
Could I get a copy of C3L Plans? I owned a pair of Qs from back in the day when they were the most I could afford. A few years ago I purchsed a set of Ms which is what I really wanted when I bought the Qs. (I gave the Qs to my daughter who is still enjoying them.) My M's have the original drivers in them and all work great except one tweeter which is a little flakely. The cabinets are starting to show the years in wear & tear, especially the top caps which were fragile to begin with (If anyone has plans for building replacement caps I would to have them.) The Ms may look a bit worn but they sound so good. Just about everything else I have auditioned made me walk away because they just didn't sound like real music like the Ms. I actually had the opportunity to enjoy a lengthly phone call with Bud many years ago. He was easy to talk to and very willling to take time to discuss his speakers and thoughts on design. I have some documentation on the Ms, (crossover schematic, M2 upgrades, although I hear the drivers are almost impossible to find) if anyone is interested.