Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12P
Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12P
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 20th December 2017, 08:35 PM   #31
mkane77g is offline mkane77g  United States
Always Learning
diyAudio Member
 
Join Date: Nov 2014
Location: 100 miles N. of S.F.
Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12P
My experience also with the 10's. I'm using a notch filter.
  Reply With Quote
Old 21st December 2017, 11:41 AM   #32
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12P
I noticed ongoing improvement past the 200hours with my AN15" Super, although not dramatic.
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 24th December 2017, 03:07 AM   #33
silverhairbp is offline silverhairbp  United States
diyAudio Member
 
Join Date: Feb 2011
Quote:
Originally Posted by mkane77g View Post
My experience also with the 10's. I'm using a notch filter.
What freq and how deep?
  Reply With Quote
Old 24th December 2017, 06:52 AM   #34
freddi is offline freddi  United States
diyAudio Member
 
freddi's Avatar
 
Join Date: Aug 2005
Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12P
re: Nirvana - have others experience a large parameter shift from suspension stiffening? Fs went up a half octave on my stamped frame AN8 pair taking Qts up along for the ride. Fs started high on my AN10, raising Qts also. I'v heard Fs can be restored by treating the doped surround with turpentine.
  Reply With Quote
Old 24th December 2017, 07:50 AM   #35
Octavia is offline Octavia  United States
diyAudio Member
 
Join Date: Mar 2008
turpentine? sounds risky
  Reply With Quote
Old 24th December 2017, 12:34 PM   #36
jameshillj is offline jameshillj  Australia
diyAudio Member
 
Join Date: Feb 2005
Location: Melbourne
I had the Classic 8" ferrite tested here (Klippel, etc) and am amazed at the low distortion and high DI of these drivers - after about 300+ hours, the suspension relaxed and Fs went down a little and the freq response both on and off axis flattened out - a truly remarkable driver, particularly when operated from >120Hz on an IEC winged baffle.
  Reply With Quote
Old 24th December 2017, 07:16 PM   #37
Octavia is offline Octavia  United States
diyAudio Member
 
Join Date: Mar 2008
I have the SuperCast 12 and same experience, it greatly improved after 200+ hours. Still not the best speaker for complex crescendo's, i.e. big orchestral and hard rock, but spooky real at less challenging levels. I cross over to subs at 70Hz, and frankly would probably benefit from a super tweeter about 12Khz or so. (sorry didn't mean to steal the thread)
  Reply With Quote
Old 25th December 2017, 12:14 AM   #38
jameshillj is offline jameshillj  Australia
diyAudio Member
 
Join Date: Feb 2005
Location: Melbourne
Yes, those 12s are a bit of a mystery - the box dimensions according to tested specs just don't seem to produce clean bass - it has taken 3 attempts at a compromised design to get a reasonable bass down to 35Hz (included some room gain) and added one of those cheap Fostex horn tweeters - the monster Levinson amp isn't a good match for it and better with a local Weston tube amp - I think the amp allows good results with his preferred classics but the drivers are slightly over damped so maybe this contributes to the better control - it's a bit of a guessing game in this area as the room contributes so much with the way these speakers/drivers radiate - they seem to benefit from quite a lot of diffusers but it gets a bit 'unsightly' and his Mrs went a 'bit spare' when she saw the skylines on the ceiling! (since replaced these with Tim's painted 'leanfusors' that are nearly hidden between the exposed rafter beams)

Seasons Greetings to everyone and Best Wishes for the next year ... james
  Reply With Quote
Old 26th December 2017, 11:00 PM   #39
mkane77g is offline mkane77g  United States
Always Learning
diyAudio Member
 
Join Date: Nov 2014
Location: 100 miles N. of S.F.
Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12P
Quote:
Originally Posted by silverhairbp View Post
What freq and how deep?
Let's see if my answer satisfies this question as I am still in early learning phases of speaker manipulating. Anyhow, I've tried approximately 7 or so different variations and the latest sounds the best so far. Frequency peak to reduce is 2000 Hz & max. damping is 6.0dB. Resistor is 4.8 ohm/33uf cap & .15mH inductor.
  Reply With Quote
Old 2nd January 2018, 11:16 PM   #40
silverhairbp is offline silverhairbp  United States
diyAudio Member
 
Join Date: Feb 2011
After a significant amount of tweaking and twiddling, it doesn't look like the AN 8" Classic will work in the intended application for me. Going back to the Satori 6.5" midwoofer.
  Reply With Quote

Reply


Audio Nirvana Classic 8 Ferrite vs. Mark Audio Alpair 12PHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Audio Nirvana Classic 12 and Classic 15: how new are these? chazdrumzalot Full Range 71 7th September 2018 09:27 PM
Audio Nirvana 15 - Ferrite vs. Alnico Horizons Full Range 14 7th April 2018 12:38 AM
Audio Nirvana ferrite classic full range speaker pair exc stefan wood Swap Meet 3 25th August 2017 01:03 AM
Audio Nirvana Super 10 Ferrite Fullrange Spkrs-Pair Horizons Swap Meet 1 17th April 2017 11:35 PM
Audio Nirvana Classic eventhorizon Full Range 44 3rd January 2015 10:14 PM


New To Site? Need Help?

All times are GMT. The time now is 11:01 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki