Project: monitor-XL reference values - Page 5 - 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 12th August 2011, 08:10 AM   #41
Helmuth is offline Helmuth  Netherlands
diyAudio Member
 
Helmuth's Avatar
 
Join Date: Oct 2008
Location: Winterswijk
One dutch guy asked me that I not could better have used a scan speak woofer. I did look but I could not find a scan speak with the same linearity efficiency as the no nonsense high-performance monacor.

Nice price scanspeak
http://www.scan-speak.dk/datasheet/pdf/26w-8534g00.pdf

or the to expensive ,revelator serie.

http://www.scan-speak.dk/datasheet/pdf/26w-4867t00.pdf

The scan speak have a nice frame a price three times the chassis I used. I think scanspeak understands the diy market. 1Looks are more important than 2specs and 3price performance. Because the average buyer does not understand TS-data and copies a design (as example Tony Gee designs) the only thing he understands are the looks of cast frame to a pressed steel frame. Tony get reduced price on his components like accuton and one hand washes the other so works the commercial world. Its irritates me thats why I mention it. Then better the partexpress diy designs looks less commercial.

The average DIY wants to buy the best for his project and got attracted by looks of the chassis and price to fit his budget.
There is no relation between a nice frame and the performance. If so show me results that aluminium-cast frames always performs better then a pressed-steel one.

There is one good advantage on the scanspeak chassis low RMS value I think that is a important parameter.
__________________
( (( KUGELWELLE )) )
recent projects :OB-mk1 /fatboy / monitor-xl / Horn-AM / dappolito / td124-mk1-rb301 / Hybrid-pse / Vfet

Last edited by Helmuth; 12th August 2011 at 08:34 AM.
  Reply With Quote
Old 16th August 2011, 05:02 PM   #42
Helmuth is offline Helmuth  Netherlands
diyAudio Member
 
Helmuth's Avatar
 
Join Date: Oct 2008
Location: Winterswijk
Yesterday I did see a reaction of some one how thinks that PA drivers are poor transducers. Referring to the design of Earl Geddes the constant directivity is key feature. And you not need good drivers. Earl uses also low distortion hf-driver and mid-woofer, by coincidence he responded and I do not doubt that, but he also came to the conclusion after his research low SPL needs low distortion. And becomes less important at higher sound-pressure levels.

There are made some faults. A good HF-driver like a B&C DE250 or a BSM-pro Beyma or RCF 1" will be good and even better performing than a hifi dome tweeter what distortion is concerned. You have to compere both drivers at same spl not at the 1Watt mode. And with a good horn will create a constant acoutic-resistance and a nice constant SPL.

I did post the second and third harmonic of the monitor XL you see the horn has -20dB lower harmonics level than the hifi woofer witch performs somewhere at medium high level what distortion is concerned.
Click the image to open in full size.
__________________
( (( KUGELWELLE )) )
recent projects :OB-mk1 /fatboy / monitor-xl / Horn-AM / dappolito / td124-mk1-rb301 / Hybrid-pse / Vfet

Last edited by Helmuth; 16th August 2011 at 05:25 PM.
  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
Unflattering, revealing reference monitor designs ChrisCummins Multi-Way 44 15th December 2009 01:36 AM
Scan-Speak Reference Monitor gchrist Multi-Way 37 10th April 2007 10:46 PM
Reference Monitor vs Reference Monitor SE danyele Multi-Way 0 26th January 2007 07:32 AM
Scan Speak Reference Monitor SE andrew01 Multi-Way 6 28th July 2006 12:31 AM
Scan Speak Reference Monitor keyser Multi-Way 7 13th September 2005 04:35 PM


New To Site? Need Help?

All times are GMT. The time now is 10:02 PM.


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