Thor or Orion - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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
Reply
 
Thread Tools Search this Thread
Old 14th July 2004, 11:22 AM   #1
diyAudio Member
 
Join Date: Feb 2004
Location: Tennessee
Send a message via AIM to bhg41088 Send a message via MSN to bhg41088 Send a message via Yahoo to bhg41088
Default Thor or Orion

http://www.madisound.com/thor.html
or
http://www.linkwitzlab.com/orion_challenge.htm

They are both around the same price.
__________________
-
  Reply With Quote
Old 14th July 2004, 12:02 PM   #2
Banned
 
Join Date: May 2004
Location: New Hampshire
The Thor is a plug and play; the Orion requires a specialized equalization circuit that adds to the complexity of the system. I'd lean towards Thor if you're not comfortable with the custom electronics aspects of the Orion.
  Reply With Quote
Old 14th July 2004, 03:14 PM   #3
AndersP is offline AndersP  Sweden
diyAudio Member
 
Join Date: Aug 2002
Location: Middle Sweden
Hi

I would go for the Orions most definately. I think you are underestimating the system price for the Orions though. They need 8 separate channels of poweramplification.
  Reply With Quote
Old 14th July 2004, 03:37 PM   #4
tktran is offline tktran  Australia
Account Disabled
 
Join Date: Mar 2003
Location: Perth
I am still confused about dipoles in general. Apparently there is less room interaction but I can't get my head around it.

Surely a speaker that fires energy backwards as well as forwards is going to need a room with better acoustics than a monopole speaker.

At the very least the speaker must sit far out from the front wall and and this front wall be heavily draped or have curtains.
  Reply With Quote
Old 14th July 2004, 05:38 PM   #5
diyAudio Member
 
Join Date: Jun 2003
Location: Menlo Park, CA
Quote:
Originally posted by tktran
I am still confused about dipoles in general. Apparently there is less room interaction but I can't get my head around it.

Surely a speaker that fires energy backwards as well as forwards is going to need a room with better acoustics than a monopole speaker.

At the very least the speaker must sit far out from the front wall and and this front wall be heavily draped or have curtains.
You're incorrectly assuming that monopole radiation is forwards. As wave lengths increase beyond baffle width a monopole becomes omnidirectional and monopole/dipole rear output is equal in magnitude. With domestically acceptable baffle widths matching wave lengths several octaves into the midrange, the required front-wall separation for hi-fi applications (meybe 4 feet, reflected path 2X direct path) isn't any different for monopoles and dipoles.

With the same separation to the front wall the dipole works better because its cosine alpha radiation pattern (-1.2dB 30 degrees off-axis, -3dB 45 degrees off axis, -6dB @ 60 degrees, no output at 90 degrees) reduces the magnitude of sidewall and ceiling reflections. Image shift from a single speaker towards the sidewall is significantly less than with a monopole (like well inside the tweeter flange iinstead of outside the speaker).

Total power is also 4.8dB lower for a given on-axis SPL with a dipole instead of a monopole, so the reverberant field is weaker.

You don't want the front-wall draped with curtains because they're going to affect high frequencies more and therefore change the total power response.
  Reply With Quote
Old 16th July 2004, 01:17 PM   #6
diyAudio Member
 
Join Date: Feb 2004
Location: Tennessee
Send a message via AIM to bhg41088 Send a message via MSN to bhg41088 Send a message via Yahoo to bhg41088
i hear "reference quality" alot, is the thor reference quality? seems like a great design.
__________________
-
  Reply With Quote
Old 16th July 2004, 07:03 PM   #7
Jonasz is offline Jonasz  Sweden
diyAudio Member
 
Jonasz's Avatar
 
Join Date: Feb 2003
Location: Kristinehamn
I vote for the Orion!

I have built the Phoenix system myself and I can honestly say that they are the best pair of speakers I've ever heard. The magic with much less room interactions actually works, maybe you have to hear it before believing it?

I'm sure the Orions are more expensive to build though, but it is worth the extra money!
  Reply With Quote
Old 16th July 2004, 07:19 PM   #8
diyAudio Member
 
Join Date: Sep 2002
Location: Australia
I'd also vote for the Orions, although the minimum is six channels of amplification not eight. Depending on your degree of audiophilia nervosa the amps don't have to be expensive. I use the $200 Panasonic XR25 digital receiver with mine and have no complaints at all.

You may also want to check the Arvo Part project at the DIY section of www.htguide.com for a passive dipole solution.

Cheers

Steve
  Reply With Quote
Old 16th July 2004, 07:30 PM   #9
diyAudio Member
 
Join Date: Jun 2003
Location: Menlo Park, CA
Quote:
Originally posted by AndersP

They need 8 separate channels of poweramplification.
6 or 8.

Each woofer has a minimum impedance of 5 Ohms which makes for a 2.5 Ohm minimum impedance when the two are wired in parallel. I use a single Adcom 555ii amplifier for the bass which has no problems with this.
  Reply With Quote
Old 16th July 2004, 09:54 PM   #10
diyAudio Member
 
Join Date: Feb 2004
Location: Tennessee
Send a message via AIM to bhg41088 Send a message via MSN to bhg41088 Send a message via Yahoo to bhg41088
but are these speakers reference quality?
__________________
-
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Orion NT 200 vs Orion 2150 SX Clipped Car Audio 3 12th June 2007 01:55 PM
New Thor TL's greenie512 Multi-Way 5 6th November 2004 09:18 PM
Redesigning the Thor planet10 Multi-Way 14 19th August 2003 07:22 AM
Thor-TL kit Vuamp2 Multi-Way 0 16th April 2003 12:02 AM
Thor with Raven Richard Moon Multi-Way 6 12th February 2003 12:03 PM


New To Site? Need Help?

All times are GMT. The time now is 05:25 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2