Scanspeak ring radiator? anyone try them? - Page 3 - 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 24th January 2005, 06:22 PM   #21
KBK is offline KBK  Canada
diyAudio Member
 
Join Date: Dec 2003
Location: The Wilds Of Canada
Boy, that post sure had lots to do with the scanspeak ring radiator. I found it quite informative.
  Reply With Quote
Old 27th January 2005, 06:10 PM   #22
RHosch is offline RHosch  United States
diyAudio Member
 
Join Date: Sep 2003
Location: SouthEast
Quote:
Originally posted by Pan
If a driver could be pushed in and take a minute to return it suggests a leaky box. A sealed box would act as a pure spring and instantly bounce the cone out again.
You're absolutely correct Pan. Once again an example of KBK talking pseudo-tech talk but completely missing the boat on very basic principles of physics and engineering that thousands of people with an IQ of only 100 can understand... let alone someone with KBK's self proclaimed IQ of 200 or so.
  Reply With Quote
Old 27th January 2005, 06:35 PM   #23
diyAudio Member
 
Join Date: Jan 2004
Location: Toronto, ON, Canada
Another possibility is that he meant that the cone keeps oscillating for a long time (which is how I understood it). Maybe I'm wrong. But is that even possible?

Also, a volume of enclosed air (at room temperature and pressure) is basically a perfect spring, as it follows the ideal gas laws. I don't see how it's non-linear.
  Reply With Quote
Old 27th January 2005, 09:29 PM   #24
Pan is offline Pan  Sweden
diyAudio Member
 
Join Date: Sep 2002
"Also, a volume of enclosed air (at room temperature and pressure) is basically a perfect spring, as it follows the ideal gas laws. I don't see how it's non-linear."

Absolutely not. Air has non symmetric behaviour at the compression and rarefaction phase. Remember we are not talking static properties here when we deal with music which is periodic movement of air.

The air adds 2nd order (mainly) harmonics to the soundwave on itīs way from whatever source that makes the sound and this also happens in acoustic suspension designs and to a lesser degree "infinite baffle" designs.

This very fact can be one explanation why some argue that even order harmonic distortion sounds more natural and pleasing than odd order. Nelson Pass used this as an argument when launching the Aleph series of power amps.

I canīt really understand why KBK act as he does. He bring up "off topic" stuff and when someone take up that line it ****es him off..hmm. Guess itīs just to painfull to get the pants pulled down in public... being a pro and all...

/Peter
  Reply With Quote
Old 27th January 2005, 09:34 PM   #25
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Guys, lets keep to the topic, and avoid the personal stuff please.
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 28th January 2005, 02:16 AM   #26
Hans L is offline Hans L  Netherlands
diyAudio Member
 
Hans L's Avatar
 
Join Date: Apr 2004
Location: Planet Earth
Quote:
Originally posted by 5th element
Dont forget about bafflestep in your MTM, if you have 90db drivers you will end up with 90dB after you factor in BS. So a super high efficiency tweeter must likely will not be required.
Just to make sure that message came through...

Quote:
Originally posted by KBK
Boy, that post sure had lots to do with the scanspeak ring radiator. I found it quite informative.
Here's a post about the SS7000: don't use it in a 2-way: it doesn't perform very well if crossed over lowish.

The MDT-33 is a superb choice for an MTM and can be crossed very low. So is the SS9700 crossed at 2KHz or higher (which I prefer over the 9900). Hiquphon is also considered a very good tweeter and for its size (3/4") it handles lowish XO (4th order acoustic @ 2200Hz and up) very well, unlike the overly expensive ringrad. I would also have a look at Accuton. I bought a pair of C23's not too long ago (it's seems like it's going to be a long wait untill the new models are released) and I'm extremely pleased with it. Can also be crossed very low.

What kind of filtering do you have in mind? If low order i very important to you, I would go for the Morel or the Accuton. SS9500 is also a good option for low order slopes (a little better than 9700 in this regard), but the other two sound more accurate, in particular the Accuton. All of them can handle loads of power... I have used all three tweeters, as well as the Hiquphon. The other, I have auditioned in one or two designs.
__________________
In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move. --- Douglas Adams
  Reply With Quote
Old 28th January 2005, 10:57 AM   #27
sbolin is offline sbolin  Thailand
diyAudio Member
 
Join Date: Sep 2004
Location: Bangkok
Hans - excellent post. Have you used or heard the Accuton C2-12 or C2-13 (is it even out yet?)? I would be interested in that.
  Reply With Quote
Old 28th January 2005, 02:34 PM   #28
Hans L is offline Hans L  Netherlands
diyAudio Member
 
Hans L's Avatar
 
Join Date: Apr 2004
Location: Planet Earth
Quote:
Originally posted by sbolin
Hans - excellent post. Have you used or heard the Accuton C2-12 or C2-13 (is it even out yet?)? I would be interested in that.
Thank you. The C12 is also a very fine tweeter. I'm not sure wether there is much difference in treble quality between the C12 and the C23 even if some graphs/plots lokk a little better. I've heard a few ppl say the C12 is better, but haven't personally A-B'd them, only heard them seperate of eachother. The C23 however is much more flexible and very suitable for 2-way for instance. TTBOMK the C13 isn't out yet.
__________________
In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move. --- Douglas Adams
  Reply With Quote
Old 29th January 2005, 12:49 AM   #29
KBK is offline KBK  Canada
diyAudio Member
 
Join Date: Dec 2003
Location: The Wilds Of Canada
OK. thanks for the info on the Accuton, and the like. I definitiely like what I hear in the Morel. Time to increase the size of the 'reject' tweeter pile again! I'll try out some of the tweeters you mention.

What do you guys think about the idea of,hmm..possibly good old conventional LCR filtering/XO'ing of speaker systems (specifically at the high end) becoming a thing of the past? With all thse interesting Digital crossover devices starting to appear, with 192khz I/O (AD/DA)? For example, the DEQX? I'm thinking of grabbing one, and rebuilding it. see what it can really do....

Pan: As for such comments (by people responding to a post of mine), they are usually done with such vitrol, I don't realy have a chance to make a comment furthur ie, respond), without that being pursued as some sort 'point of attack'. Personally, I think it might be nice to speak to people or rather more correctly, converse with them, as opposed to attack. Not everyone has the same mode or style of expression. I tend to speak as the 'muse' affects me, ie, stream of conciousness expressed as conversation. It isn't always right..but when it is.... I accept your mode of expression, please consider that of others?

As for me getting my pants pulled down in public, I've never minded that. But when you are in a business with other people in it, suddenly the marrige prevents you from you being your full self.

As for boxes and seal quality, just about anything we like to call a box... leaks. Any box I've dealt with, that is supposedly sealed in nature, as far less of a seal quality that I'd call 'optimal'. As for furthur explainations, etc.. I was honoured with about 4 phone calls about my presence on this site, and my posts in general.

Enough said.......
  Reply With Quote
Old 29th January 2005, 04:50 AM   #30
diyAudio Member
 
5th element's Avatar
 
Join Date: Oct 2002
Location: England
Completely off topic but I wonder what film this is from

Courtesy of the Goo website.
Attached Images
File Type: jpg just_hi-fi_screen.jpg (23.6 KB, 455 views)
__________________
What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz!
  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
What beats the R2904/7000 ring radiator? smellygas Multi-Way 124 12th August 2011 12:41 AM
Repair r2904 ring radiator - how to? BNK Multi-Way 1 27th March 2009 01:15 AM
DIY JBL 2402H Ring Radiator Cabinets HipoFutura Multi-Way 1 22nd August 2006 03:43 AM
UK: ATC & Scan Ring Radiator Drivers ShinOBIWAN Swap Meet 18 25th October 2005 11:17 PM


New To Site? Need Help?

All times are GMT. The time now is 08:06 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2