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View Full Version : 046ti tweeters off the Le 85 horns ?



dwight8
09-13-2009, 08:02 AM
ok so dont laugh, i have a pair l200 cab and i want to install le15b and le85 drivers and a pair of 046ti tweeters with lx-13 cross overs i will cap the 046ti tweeters off the le85 horns. good idea or not.

hjames
09-13-2009, 08:47 AM
ok so dont laugh, i have a pair l200 cab and i want to install le15b and le85 drivers and a pair of 046ti tweeters with lx-13 cross overs i will cap the 046ti tweeters off the le85 horns. good idea or not.

Most folks toss a pair of 2405 Slot drivers in the L200 cab - building a quasi L300/4333 out of it ... of course, its not perfect because it has the short horn and not the long horn used in the L300/4333, but it can be mighty good.

If you go that route and don't have a crossover, you can build a pair of 3133 crossovers ...

Details on things I've done with mine can be found here ...
http://audioheritage.org/vbulletin/showthread.php?t=15317

http://audioheritage.org/vbulletin/attachment.php?attachmentid=40375&stc=1&d=1245750630[br /]
http://audioheritage.org/vbulletin/attachment.php?attachmentid=26873&stc=1&d=1185738122

Earl K
09-13-2009, 12:50 PM
http://www.bostream.nu/sebackman/TheSystem/Speakers/P%e5%20v%e4ggen%20012.jpg


ok so dont laugh, i have a pair l200 cab and i want to install le15b and le85 drivers and a pair of 046ti tweeters with lx-13 cross overs i will cap the 046ti tweeters off the le85 horns. good idea or not (?)

- It's been done before ( mixing HiFi tweets & SR compression drivers with horns ), by a long time LHF member / with a large measure of satisfaction .

- Read this thread about Sebackman(s)' HT setup . (http://www.audioheritage.org/vbulletin/showthread.php?t=3774)

http://www.bostream.nu/sebackman/TheSystem/Speakers/Mula%20004.jpg

- BTW, since he was running an all active system / he had the ability to level match the tweets to the rest of his components ( even though they are a good 6 db lower in sensitivity than the rest ) .

- JBL themselves have (had ) something similar ( to Sebackman ) in one of their older HT systems ( S1M Synthesis ) .
- It differed in that the mid/tweeter combo ( or the horn ) were switched in & out of the circuit depending on the systems' intended useage ( HT or music playback ) .
- Here's the S1M schematic (http://manuals.harman.com/JBL/HOM/Technical%20Sheet/S1M%20SYNTHESIS%201%20ts.pdf) to look at .

- Sebackmans & JBLs approaches to using HiFi tweeters with HT ( SR ) components are both pretty sophisticated.

- Follow either example for best results .
- ( ie; I'd advise that you avoid your proposed wire-up scheme / you're most likely going to blowup those ( expensive ) tweets /especially if you are thinking that a single cap will suffice as a HT crossover ) .

>< cheers :)

Earl K
09-13-2009, 04:24 PM
dwight8

- If you're going to try using your 046Ti after a passive network, I would suggest that you build something like a 18 db/octave ( 3 element ) filter designed to crossover around 10K . Run signal straight into it from the amp source ( don't pull it from the signal feeding the le85 / this signal feeding the horn driver is attenuated , which you don't want since you'll want every db available to you .

- Making the network a bit of a 3-pole "bump filter",( maybe peaking at 13K ) might help you hear the tweeter working . Maybe someone with LEAP will help you out here with a bit of design prowess .

- To properly design the filter, you need to know the AC impedance of the tweeter in the freq. range that the filters' passives react ( approx. +/- an octave from the F3 point ) .

- 4313B ( Giskard ) posted the AC impedance of this tweeter ages ago / & for the life of me, I can't dig it up using the search function .
- As I recall it was really quite flat ( & was something like 6 ohms ) .
- Does anyone know where to find it ?

>< cheers :)

ps; OTOH, Heathers' practical advice makes the most sense . ;)

dwight8
09-13-2009, 06:19 PM
ok so how about useing a L100 cross over for the 046ti only does any one have a pair jbl N333 or 3133 cross over for sale? i cant even make sence let alone a cross over lolor may be i will just sell the 046tis what do you guys think there worth, there like new

Earl K
09-13-2009, 06:30 PM
ok so how about useing a L100 cross over for the 046ti (?)

- No ! ( that's almost a guaranteed situation that will allow too much signal into the 046Ti / then poof ! ) .


may be i will just sell the 046tis what do you guys think there worth, there like new

- Yea, likely best to sell them and put the money towards something you won't too easily blow up ( like 2405s ) .

- eBay ( as always ) establishes the going rate for these sort of items .

>< cheers :)

dwight8
09-13-2009, 07:23 PM
are the 0465ti worth as much as the 4205?

hjames
09-13-2009, 07:34 PM
are the 0465ti worth as much as the 4205?

Generally not, the 2405 are pro drivers and more robust, but they are usually cheaper than the consumer version of the "slot driver" the 077 which has a clear lucite wedge (from what I've heard, its acoustically no difference).

dwight8
09-18-2009, 07:26 PM
ok i got a pair of L166 for my center channle my mains are custem built s8 do you think i should replaces the tweeters in the L166 with the 046ti tweeters but im still looking to buy a pair of 077 or 2405 tweeters