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In Reply to: RE: My Zilch Z19 Xover pic posted by Cougar on August 12, 2015 at 18:53:31
It runs between the two caps that appear parallel part of the bass unit.
Of course hard to read/picture, but seems to shunt the paired caps.
Follow Ups:
The orange wire would be the woofer + and the green wire would be the woofer - but it needs to be connected to the - from the amplifier.The other end of the coil needs to be connected to the + from the amplifier.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 08/14/15
Tre, you are correct. I still need to add some more terminals for the amp and driver components, plus I still need to connect to the L-pads once I finish the enclosure for the Xover.Here's the layout I followed.
Edits: 08/14/15
Thank you, Cougar!!!
This is an amazing thread :-)
Your parts layout diagram is great!
I have been attempting to build a 2 way crossover modeled after the Altec Model 19's crossover for my 2 way system that uses HF horns ; EV DH1012A 8 ohm and Faital LHT142 elliptical tractrix style lens.
Using standard 2 way crossovers it appears I have encountered the same problem of 'apparent' excessive output in the 1k-3k region and 'shouty' sound. I, too sought to fix the problem with Contour of Notch filters but was not pleased with the results.
After finding some of the online schematics for Klipsch K horns and Cornwall, or Altec models like VOT I noticed the mid compensation circuit in the Model 19 crossover.
I posted a thread about the mid compensation circuit here: http://www.audioasylum.com/cgi/vt.mpl?f=hug&m=173895
How the circuit functions electrically is still puzzling for me but my main interest is how I can incorporate into my 2 way system, that filter using variable L-Pads like these from Parts Express: http://www.parts-express.com/parts-express-speaker-l-pad-attenuator-100w-mono-3-8-shaft-8-ohm--260-262
The system I am working on will be main front speakers as part of a home theater setup. I would use your crossover Z19 but I am not sure it would give the system proper phase to match my center and rear speakers.
My Denon AVR3000 only has 120W per channel so I am experimenting with 1st and 3rd order filters. I will likely go back to a 3rd order HP but right now the 2 way front system has only 1st order LP and HP with a Zobel for the woofer. The HP is only a 10uf 250W metalized cap! This is partly in homage to Jim Thiel and his use of 1st order filters with notch filters and Zobel circuits.
I don't have any way to test the EV horn to see if it needs a series notch filter at it's Fs, which I 'assume :-(' to be somwhere around 400Hz. If anybody has any info on that I would love to hear it.
I am going to try to use a couple of L-Pads to make the HF control section of your Z19 crossover but I am confused about the wiring.
My schematic reading skills are weak in general but the way the L-Pads are wired across the 1, 2, and 3 pins is confusing for me. The parts layout diagram is great. I am going to study it for a while but I may still ask you for some help.
Thanks again for the great thread!!!
"Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck
Does the level matching for the horn seem to function alright for your system?
Does the horn blend well with the MCM woofer?
Are you adjusting by ear or with some form of RTA?
as far as I can tell it matches well. I will need to measure it but the MCM woofer is about the same sensitivity as the GPA 416 of 97-98 dbs
The horn and woofer blend nicely.
The Z19 might work alright with the 414-8B woofer as well.
Since it is a well developed crossover, that might be the way to go if I want to go full range with one amp.
nt.
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