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Author Topic: JTR Orbit Shifter ("Live Sound" version)  (Read 11583 times)

Steve Hurt

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #10 on: July 13, 2010, 09:54:12 pm »

Jeff Permanian wrote on Tue, 13 July 2010 16:18

I'm still working out the final details; grill, handles, casters.

I think I'm going to remove the rear bottom corner, install large casters and install handles on the bottom so that when its tipped back someone could help lift them up.


This will make a good box a great box.
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Chris Gruber

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #11 on: July 15, 2010, 01:54:52 am »

What is the driver compliment for the Orbit Shifter?
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-Chris
Arthur Audio

"It never ceases to amaze me how many sound guys think the measure of their work is solely defined by whether or not their subs are capable of sonically vaporizing squirrels from 20 meters."

Ian Coughlin

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #12 on: July 15, 2010, 03:29:12 am »

+1 what are the drivers
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TrevorMilburn

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #13 on: July 15, 2010, 06:20:26 am »

I believe the driver is a custom 18 incher weighing something like 68lbs. Pretty powerful beast, by all accounts.

Trevor
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Steve Hurt

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #14 on: July 15, 2010, 07:22:04 am »

The Orbit Shifter has a single 18" driver.  It's a custom build and 68 lbs is the number I've heard also.  I saw them in Jeff's shop but didn't take a picture.  Pretty interesting looking driver.
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Ian Coughlin

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #15 on: July 15, 2010, 10:19:13 am »

sarcasim\ Hmmm sound great if its 68lbs \sarcasim jk...

Any valuable specs known? Who it's made by? Etc?
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TrevorMilburn

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #16 on: July 15, 2010, 12:26:15 pm »

Link to the JTR forum page: http://jtrspeakers.websitetoolbox.com/post/show_single_post? pid=40071251&postcount=1
and a Home Theatre review of the Orbit Shifter:
http://www.avsforum.com/avs-vb/showthread.php?p=18779521#pos t18779521
No mention as to who makes the driver, but from the pics I have seen, I have a feeling the amp may be by Speaker Power: http://www.speakerpower.net/index.html.
I think I recall a post stating this manufacturers amps are used by Mark Seaton in his range of speakers as well as in other well known   manufacturers products.

Trevor
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Jeff Permanian

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #17 on: July 16, 2010, 12:53:42 pm »

The driver is made in the USA, has 30mm of Xmax (each way) and 50mm of Xmech (each way) Twisted Evil
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Art Welter

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #18 on: July 16, 2010, 02:24:44 pm »

Jeff Permanian wrote on Fri, 16 July 2010 10:53

The driver is made in the USA, has 30mm of Xmax (each way) and 50mm of Xmech (each way) Twisted Evil


Jeff,

30mm is an impressive X max figure !

The 23mm Xmax Growler appears to hit Xmax ( 10% harmonic distortion generated) with a 29 volt 45 Hz sine wave, though at 50 Hz and above can handle 85V with low (around 10% or less) distortion.

The Orbit Shifter, with it’s much longer horn and larger mouth area must go much lower than the Growler before exceeding  Xmax.

Have you done any testing so far to determine the Orbit Shifter's maximum input voltage without exceeding  Xmax  ?

Art Welter
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Jeff Permanian

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Re: JTR Orbit Shifter ("Live Sound" version)
« Reply #19 on: July 16, 2010, 06:56:08 pm »

Art Welter wrote on Fri, 16 July 2010 13:24


Jeff,

30mm is an impressive X max figure !

The 23mm Xmax Growler appears to hit Xmax ( 10% harmonic distortion generated) with a 29 volt 45 Hz sine wave, though at 50 Hz and above can handle 85V with low (around 10% or less) distortion.

The Orbit Shifter, with it’s much longer horn and larger mouth area must go much lower than the Growler before exceeding  Xmax.

Have you done any testing so far to determine the Orbit Shifter's maximum input voltage without exceeding  Xmax  ?

Art Welter


The Growler is no where near its Xmax at 29 volts. The harmonic distortion is due to the driver displacing a large percentage of the rear chamber's volume.
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