pix of my latest

jsalk · 26th June 2003, 11:20 AM

Just thought I'd share a picture of my latest project.

The design was six months in the making and combines the W18EX with a G2 ribbon. The crossover was designed by Dennis Murphy.

I've built many quality DIY designs (never one I didn't like), but these are the most detailed, open and transparent of them all. Imaging is spectacular.

Next its on to phase 2 - an actively crossed woofer/subwoofer to plumb the depths. A center channel using essentially the same drivers is also nearing completion.

Later...

- Jim

The Paulinator · 26th June 2003, 03:56 PM

[QUOTE A center channel using essentially the same drivers is also nearing completion.

[/QUOTE]

Those look amazing! What kind of wood is that?

May I make a recommendation? I noticed you said you are making a center channel with ESSENTIALLY the same drivers. I would strongly recommend using the EXACT same drivers, same size same configuration on the baffle. Basically, just a third of the two you already have. I have never heard a center channel using either the same drivers in a different configuration or nearly the same drivers (smaller woofers in an MTM for example) that sounded timbrally identical to the left and right. I know it might not look as good, and may sit a bit high on your tv, but it's WELL worth it.

I'll add also that using the same drivers in the same configuration but on a different baffle (a wide, center channel-type baffle for example) does not work either.

Save your system and use 3 IDENTICAL speakers in the front.

JOE DIRT® · 26th June 2003, 04:02 PM

nice looking speakers!!...well done

DIRT®

Variac · 26th June 2003, 04:14 PM

Those are an intrigueing driver choice.
I'm sure they work well together. What freq do they cross at?

7V · 26th June 2003, 04:32 PM

They look really good, Jim, and I wish you health to listen to them for a few enjoyable years - not too many as I wouldn't want to deprive you of the fun of building the next model.

Some questions ...

I'm interested in the crossover frequency too.

Also, I notice that they are supported (for the photo) on what looks like a marble plinth. How do you support them when you listen, to achieve the levels of detail, openness and transparency that you do? Are they on spiked stands?

Well done
Steve

jsalk · 26th June 2003, 04:37 PM

I will be producing many pairs so I will have a chance to audition both the center channel and another of the same as a center channel.

By the way, the center channel I am working on will use a pair of W18Ex's, the G2 ribbon and a W15 mid in a sealed cabinet.

The cross on these is around 2500 Hz. Dennis Murphy did the crossover and I don't know exactly what he settled on, but it was somewhere in this area. As usual, he did a beautiful job...totally seemless transition.

As for the driver combination, I can't conceive of one that would provide more detail from the mids on up. They are about as tranparent as I have ever heard and I've worked in recording studios for over 35 years (of course, I'm biased).

jsalk · 26th June 2003, 04:45 PM

Yes, they are currently supported on 28" spiked stands.

The woofer/subwoofer cabinets I am building will eventually support the left and right mains (they will be 28" tall as well). They will be actively crossed (frequency to be determined) to insure flat response and essentially be aligned with the acoustic centers of the mains. Hopefully, the result will be a system that can scale the heights and plumb the depths with smooth transitions throughout.

jsalk · 26th June 2003, 04:52 PM

Sorry, I forgot the answer your question in regard to the wood. It is waterfall bubinga (from Africa). When I put that much work into a project, I tend to use exotic veneers. I figure they should look as beautiful as they sound.

king30 · 26th June 2003, 05:45 PM

Jim,
will you be publishing the design for these?

jsalk · 26th June 2003, 05:57 PM

Actually I will not be publishing the design at this time. These speakers were designed as part of a system for my home theater design/installation business.

I will be custom-producing these for customers at this time. At some point, I may also offer the design as a kit.

That said, if you are interested in building a pair, I would be more than happy to work with you.

26th June 2003, 11:20 AM	#1
jsalk diyAudio Member Join Date: Mar 2003 Location: Michigan	pix of my latest Just thought I'd share a picture of my latest project. The design was six months in the making and combines the W18EX with a G2 ribbon. The crossover was designed by Dennis Murphy. I've built many quality DIY designs (never one I didn't like), but these are the most detailed, open and transparent of them all. Imaging is spectacular. Next its on to phase 2 - an actively crossed woofer/subwoofer to plumb the depths. A center channel using essentially the same drivers is also nearing completion. Later... - Jim

26th June 2003, 03:56 PM	#2
The Paulinator diyAudio Member Join Date: Jan 2002 Location: Spfld, OR	Re: pix of my latest [QUOTE A center channel using essentially the same drivers is also nearing completion. [/QUOTE] Those look amazing! What kind of wood is that? May I make a recommendation? I noticed you said you are making a center channel with ESSENTIALLY the same drivers. I would strongly recommend using the EXACT same drivers, same size same configuration on the baffle. Basically, just a third of the two you already have. I have never heard a center channel using either the same drivers in a different configuration or nearly the same drivers (smaller woofers in an MTM for example) that sounded timbrally identical to the left and right. I know it might not look as good, and may sit a bit high on your tv, but it's WELL worth it. I'll add also that using the same drivers in the same configuration but on a different baffle (a wide, center channel-type baffle for example) does not work either. Save your system and use 3 IDENTICAL speakers in the front.

26th June 2003, 04:14 PM	#4
Variac diyAudio Editor Join Date: Dec 2001 Location: San Francisco, USA	Those are an intrigueing driver choice. I'm sure they work well together. What freq do they cross at? __________________ 2013 Burning Amp Festival announced: Sunday, October 6th in S.F. We need Volunteers & sign-up's for what you're bringing!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
my latest box he he he	sakis	Solid State	4	12th March 2008 07:54 AM
My Latest Speakers	angsuman	Multi-Way	25	26th July 2007 06:46 PM
My latest	Andrewbee	Full Range	14	7th December 2005 03:14 AM
My Latest	ir	Chip Amps	9	12th February 2004 04:17 PM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

26th June 2003, 04:02 PM	#3
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	nice looking speakers!!...well done DIRT®

26th June 2003, 04:32 PM	#5
7V diyAudio Member Join Date: Feb 2003 Location: North London	They look really good, Jim, and I wish you health to listen to them for a few enjoyable years - not too many as I wouldn't want to deprive you of the fun of building the next model. Some questions ... I'm interested in the crossover frequency too. Also, I notice that they are supported (for the photo) on what looks like a marble plinth. How do you support them when you listen, to achieve the levels of detail, openness and transparency that you do? Are they on spiked stands? Well done Steve

26th June 2003, 04:37 PM	#6
jsalk diyAudio Member Join Date: Mar 2003 Location: Michigan	I will be producing many pairs so I will have a chance to audition both the center channel and another of the same as a center channel. By the way, the center channel I am working on will use a pair of W18Ex's, the G2 ribbon and a W15 mid in a sealed cabinet. The cross on these is around 2500 Hz. Dennis Murphy did the crossover and I don't know exactly what he settled on, but it was somewhere in this area. As usual, he did a beautiful job...totally seemless transition. As for the driver combination, I can't conceive of one that would provide more detail from the mids on up. They are about as tranparent as I have ever heard and I've worked in recording studios for over 35 years (of course, I'm biased).

26th June 2003, 04:45 PM	#7
jsalk diyAudio Member Join Date: Mar 2003 Location: Michigan	Yes, they are currently supported on 28" spiked stands. The woofer/subwoofer cabinets I am building will eventually support the left and right mains (they will be 28" tall as well). They will be actively crossed (frequency to be determined) to insure flat response and essentially be aligned with the acoustic centers of the mains. Hopefully, the result will be a system that can scale the heights and plumb the depths with smooth transitions throughout.

26th June 2003, 04:52 PM	#8
jsalk diyAudio Member Join Date: Mar 2003 Location: Michigan	Sorry, I forgot the answer your question in regard to the wood. It is waterfall bubinga (from Africa). When I put that much work into a project, I tend to use exotic veneers. I figure they should look as beautiful as they sound.

26th June 2003, 05:45 PM	#9
king30 diyAudio Member Join Date: Sep 2002 Location: Blue Bell, Pa	Jim, will you be publishing the design for these?

26th June 2003, 05:57 PM	#10
jsalk diyAudio Member Join Date: Mar 2003 Location: Michigan	Actually I will not be publishing the design at this time. These speakers were designed as part of a system for my home theater design/installation business. I will be custom-producing these for customers at this time. At some point, I may also offer the design as a kit. That said, if you are interested in building a pair, I would be more than happy to work with you.

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read