What to do with old Audax fiberglass 6.5" and dome tweets - Page 2 - 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 26th September 2012, 03:15 AM   #11
diyAudio Member
 
Moondog55's Avatar
 
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
Hmm Maybe, from the pix I thought break-up was starting higher than 4k
Lower may be sweeter then
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"
  Reply With Quote
Old 27th September 2012, 07:36 PM   #12
todd is offline todd  United States
diyAudio Member
 
Join Date: Nov 2004
Location: Boston, MA
Default baffle step curve confusion and reasonably sized/priced LF driver

I'm a little confused about what the baffle step circuit is doing. So, the F3 freq that you calibrate the circuit at means that if I choose say 800hz or so, then the response will be 3db lower than it otherwise would at 800hz? Does this mean it'd be 6db down at 1600 like a 1st order? Does it level off at 6db all the way up to HF?

On another note, what do y'all think of this reasonably priced Visaton as a LF driver:
Visaton 9067 W250 10" Woofer 8 Ohm 292-586
I was figuring it has specs similar to the peerless 10 that is used OB in the manzanitas so perhaps it'd work as a budget OB alternative, lotta xmax, lowish Fs, decent Qts. This way if I decided to go the OB route it'd work and it'd also make a reasonable vented box woofer as well.
___
/<>/>/>
  Reply With Quote
Old 28th September 2012, 12:28 AM   #13
diyAudio Member
 
Moondog55's Avatar
 
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
It models with a big peak in a 120litre sealed box, can you live with a box that big?
The 12 inch Peerless may do better for not much more money
the 830669 315 SWR
Certainly smoother and lower Fs

http://www.speakercity.com/Merchant2...Code=nomexcone
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"
  Reply With Quote
Old 28th September 2012, 12:52 AM   #14
diyAudio Member
 
Moondog55's Avatar
 
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
The Peerless models much better in a smaller sealed box
Attached Images
File Type: jpg Peerless 830669SWR.jpg (217.1 KB, 24 views)
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"
  Reply With Quote
Old 28th September 2012, 12:59 AM   #15
diyAudio Member
 
Moondog55's Avatar
 
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
And here is the same driver in a much bigger box with a 1st order capacitor at 18 Hz to stop over excursion on subsonics
Attached Images
File Type: jpg Peerless in big box.jpg (223.4 KB, 23 views)
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"
  Reply With Quote
Old 28th September 2012, 07:17 PM   #16
todd is offline todd  United States
diyAudio Member
 
Join Date: Nov 2004
Location: Boston, MA
Ah, my apologies, I meant the visaton 12" in place of the peerless SLS 12" (from the manzanita) for some reason I put the link for the 10"...

They're priced pretty nicely right now at P.E.

What do you think about a goodish baffle step freq. for my 6.5? It starts getting expensive at too low a frequency because the inductors get large. From the audax FR chart I posted about I was thinking 700 or 800, wallet-wise the higher I can get away with the better...
(note that this isn't REALLY a baffle step since I'm just trying to tame the midrange humpyness on the chart and the baffle size for these will be irrelevant)

Does the baffle step just stay constant up thru the high frequencies at whatever attenuation level you set it for? Does it take a 1st order slope when it is "ramping up", like around the F3?
  Reply With Quote
Old 28th September 2012, 08:03 PM   #17
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

Less waffle and some proper modelling will help a lot here.

If you already have some suitable cabinets then clean them up
and use the two drivers, but design the x/o correctly, and here
that is not easy at all, and cannot be "read off" data sheets.

FRD Consortium tools guide

With the driver peak and the baffle step your looking at a lot of
of correction for the bass/mid, and there is no real sign it has
a natural roll-off on axis you can easily exploit, modelling is
the only way to sensibly explore your basic options.

rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
  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
The ubiquitous 1/2"...um....3/4"...er 1" ?? polycarbonate "dome" tweeter River757 Multi-Way 16 8th July 2013 12:45 AM
b/n harman h25-1 1" woven textile soft dome tweets, 4 ohm, neo mag honkyg Swap Meet 0 12th April 2012 03:56 PM
Wanted Dead Audax HD3P gold dome pizzo tweeters spresto9 Swap Meet 0 24th June 2010 08:33 AM
Replacement dome for Audax tweeter JohnL Multi-Way 2 23rd October 2007 11:00 PM
Has any one use the AUDAX TW025A18 1" TITANIUM DOME TWEETERS ? jewilson Multi-Way 3 5th July 2004 09:34 PM


New To Site? Need Help?

All times are GMT. The time now is 08:07 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