2-way esl

[vmk]

One ugly resonance...

[a.wayne]

X-over Panel @ 200 will eliminate that issue , Did you figure out what the issue was with the impedance curves ?

[vmk]

I got the final kick to put my brewing kit (3 tier) in brewing order... Puck the impedance

Very pleased with the speakers and win amp equalising + subwoofer. Will go trough my music (>800 CDs) and have a few good beers to help me decide what to do next. I really like the lower bass, would hate to cut it out. -> dipole bass...

An example, The Gardigan "Grand Turismo", bass is amazing, every other systems that I have had blurred all the stuff, now it's crystal clear.

Back to the beer and music (and fishing tomorrow )

[chinsettawong]

Would you share with us your woofer system and setup?

Wachara C.

[vmk]

OK, about a 40 trout and a 100 litres of the homebrew later I got my self to build the speakers to the "ready stage". Might still but a wooden strip on the side of the frame to cover the gap between the mdf-sheets.

There was some issues with the 1st setup, the mylar and spacers separated after one of the speaker fell down (too much homebrew...). Also there was a lot of HV-leaking going on because of the poor insulating of the stators. The glue that I used wasn't that good either, so a redo was called. A few more layers of the varnish and this time the HV-testing BEFORE the build

I used a double sided tape this time to attach the mylar to the spacers. A one good thing about the the tape is that I was able to insulate the edges of the perforated sheets with the tape ("rolled over the other side"). There was leaks at the sharp edges that I wasn't able to fix properly with the varnish.

Alignment of the holes was pain though, but after I got idea of using matches to separate the sides while I got the holes in line everything went OK. How are you other tape users doing the alignment? Pretty painful to do at least with out helping hands...

Will do some measurements next time I got the motivation...but they sound pretty good and even the sound level of the pair is identical (judging by the stereo image). That wasn't the case with the previous build...

->Wachara C
The sub ( Image12 ) and just the series capacitor for the ESL's. Not ideal, should really have two subs, dipoles...

I will start a new project after the trout fishing season is over, wire stators and a bigger size.

[Calvin]

Hi,

... You are going to trade one squaller against the other? *lol*
Naaa, just kiddin´

jauu
Calvin

[JonasKarud]

Originally Posted by Calvin

Hi,

... You are going to trade one squaller against the other? *lol*
Naaa, just kiddin´

jauu
Calvin

????????????

Urban Dictionary: Squaller

Vmk, very nice speakers! Keep on building!

[Calvin]

Hi,

squall = loud cry (of childs or babies), squaller = person crying out loudly
Didn´t intend to offend anybody.

jauu
Calvin

[vmk]

Had to add more wire to the transformer primaries. Starting point was 5.7VAC when the transformers were in 230VAC (2*toroidals/ESL). Added a 15 rounds to each transformer to reduce the step up ratio. Still enough of the squall to my ears even with a low power amp. The red curve in the attached picture is the after situation (both measurements with a 1 Ohm series resistor).

My Mylar is not as thigh as I was planning it to be and the resonance is very low. I guess that the tape that I was using to fix the mylar to spacers gave away. Next time I know better.

Still busy with the fishing (as you can see ) so I just "have to" live with this set up for a while. The speakers sound really nice... except the lows, need something to between 50-200Hz, now the transition from ESL's to the sub is awful.

[vmk]

Hello again, tried the impedance measurement again, is it looking the way it should (good enough for LSP-CAD)? It's with out any filtering. Thanks.