Alpair 10 Gen. MAOP Prototype TW-1 - Page 13 - diyAudio
Go Back   Home > Forums > Commercial Sector > Manufacturers > Markaudio

Markaudio Designers and builders of audiophile grade drivers

Reply
 
Thread Tools Search this Thread
Old 23rd February 2012, 06:04 PM   #121
von Ah is offline von Ah  United States
diyAudio Member
 
von Ah's Avatar
 
Join Date: Feb 2008
Location: Maryland, USA
Quote:
Originally Posted by doorman View Post
+3 on the graphite!
I was thinking Hibachi Mauve , but Graphite works, I guess...
Fantastic work on those! I am eager to listen vicariously.
  Reply With Quote
Old 23rd February 2012, 06:20 PM   #122
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Quote:
Originally Posted by planet10 View Post
I like the white... wnder if they glow in the dark?

dave
Ahhh. The days of blacklights
  Reply With Quote
Old 23rd February 2012, 06:24 PM   #123
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by buzzforb View Post
Ahhh. The days of blacklights
Using one as a nightlight in my office... dug it out to look at Bernie's solid locust cabinets.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 1st March 2012, 10:46 PM   #124
diyAudio Member
 
Join Date: Mar 2008
Any idea when these drivers will be available for purchase?

They look like incredible drivers. I think these will inspire me to build a new pair of speakers.

Thanks,

Nick
  Reply With Quote
Old 2nd March 2012, 01:26 AM   #125
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
I'm gonna guess that Mark will have a queue...

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 5th March 2012, 06:36 AM   #126
diyAudio Member
 
markaudio's Avatar
 
Join Date: Nov 2008
Hi Guys,
Keeping you updated regarding testing. For the first time, I'm revealing some of my cone development tradecraft. Take a look at the attached Substrate deviation graph.

Please DON'T copy, re-post or re-distribute this graph from this post. Its ©Markaudio and must remain in the Markaudio section of this forum.

It illustrates the amount of physical substrate surface deviation from a static position (above mechanical oscillation) between an Alpair 10 standard Anodized cone (red bars) and an MAOP cone (blue bars) while under a given load set.

The test cones were housed in complete drivers using the current components. This includes the current Alpair 10 rectangle coil and the latest Matsubara san spider. Both drivers were measured prior to the deviation test being matched @ +/-0.1bB output anechoic. The input signal in the deviation test was generated from a CD (Naxos) that combined vocal and instrumental in a measured range from 2700Hz to 5750Hz.

So there's no confusion, this is a micro-measurement of part of the mechanical property set (while under load) of each test cone. It is NOT a frequency test. This work is from my own isolation lab.

As expected, the MAOP substrate has an damping effect, reducing the amount of surface deviation. In particular, what's most noticeable is the overall "smoothing" of the output from the MAOP cone compared to the standard version. This is to expected and confirms the feedback coming from Japan:

http://blog.fidelitatem-sound.com/?p=383
http://blogs.yahoo.co.jp/linfof/61108074.html
http://masahi.cool.ne.jp/linfofbbs/j...ickup&num=8514

Now fellas, what does this particular micro-measurement tell us: MAOP cones will deliver a bit flatter response, helping to iron out some of the more "peaky" CD's or digital source music in your collection, or anyone with a "bright" amp also may benefit. If you're into wanting a more "concert like" rendition, the MAOP coned drivers would be an interesting choice.

Certainly from my engineering perspective, MAOP cones are performing much as predicted. As with so many things audio, beauty is in the ears of each individual beholder. If you chose to buy a pair of MAOP drivers, you can be satisfied with the knowledge that each pair of drivers will be personally built and checked by Kita san, Taniguchi san, Evan Yu or myself. Each cone set is matched, along with all the other components. Each driver set will be signed off by the these guys and me for the pairs I make.

Cheers
Mark.
Attached Images
File Type: jpg Alp10-ANO-MAOP-substrate-sml.jpg (141.3 KB, 439 views)

Last edited by markaudio; 5th March 2012 at 07:43 AM.
  Reply With Quote
Old 5th March 2012, 10:05 AM   #127
diyAudio Member
 
simon dart's Avatar
 
Join Date: Mar 2004
Location: Herefordshire
Hi Mark,

So just to understand this a bit better, is the vertical axis a measure of deflection from what would be perfect rigidity?
__________________
Bill Bryson: It is no longer permitted to be stupid and slow. You must choose one or the other.
  Reply With Quote
Old 5th March 2012, 11:50 AM   #128
diyAudio Member
 
markaudio's Avatar
 
Join Date: Nov 2008
Quote:
Originally Posted by simon dart View Post
Hi Mark,

So just to understand this a bit better, is the vertical axis a measure of deflection from what would be perfect rigidity?
Hi Simon,
Ummmmmph, "perfect rigidity", that's rather another design issue, not primarily related to this test as we're in the resonant phase of cones operation in this instance. This vertical axis is a measurement outcome made from the cone's non-excited static position.

The MAOP cone is made using the same Mutliform process and the same base alloy as the standard cone. Effectively, both MAOP and standard cones are the same apart from the application of the surface treatment. Structural base rigidity remains effectively the same for both types of cone.

The purpose of issuing this particular test outcome was it illustrates a measurable difference in the micro-reonant output properties of MAOP when compared to traditional alloy coatings.

Possibly some of the potential confusion is in the understanding and application of a MAOP for mechanical-acoustic transmissive purposes. In the case of MAOP, this particular process chemically converts the boundary surface layer of the cone's alloy into a crystalline structure (see pic). Such a structure exerts a markedly different displacement value on the cone boundary layer to that of traditional coatings. From the pic (MAOP surface layer magnified), you can observe the porous nature of the structure. Effectively, its acting a bit like a sponge, its pores absorbing part of the resonant pattern traveling out across the cone. Thus its influence on the transmissive property of a cone in the resonant phase is measurably different to standard cones.

I haven't had time to measure at lower frequencies where the driver's power-train is mechanically oscillating. I do have rig for this but wey more time consuming and I'm pretty sure the audible differences in the LF region will be markedly less noticeable.

The limitation of this particular test is that it applies to 1 location on the cone and is limited to 1 set of non-linear frequencies. All the same, it is a fair indication of the difference in output from MAOP and standard cones.

I'm pretty much confirming what is intuitively known by many Diyer's, that coatings of various kinds may likely apply what may be best described as a "damping effect" on a cone's output. The really interesting question for me as a driver designer, is how mechanically efficient is MAOP and what losses occur under various loads? Given that MAOP is a conversion process rather than a coating process, how good does it sound compared to other cones? This last question is much in the hands of custom builders and end-users, hence the significant amount of listener input currently happening in Japan with the MAOP genesis pair of drivers.

Thx
Mark.
Attached Images
File Type: jpg MAOP crystaline.jpg (107.7 KB, 413 views)

Last edited by markaudio; 5th March 2012 at 02:09 PM.
  Reply With Quote
Old 29th May 2012, 12:24 AM   #129
diyAudio Member
 
markaudio's Avatar
 
Join Date: Nov 2008
Default Alp 10 MAOP LATEST NEWS

Hi Guys,
Bringing you up to date on MAOP. The first batch were completed last month. Please see the pics of the white and graphite drivers, these illustrate the actual production units.

Paired serial Numbers 0001 to 0026 (26 pairs) were completed by Evan Yu and Jeff Taniguchi san. Each pair was personally built, tested and matched by these 2 engineers. Each pair is personally signed by these 2 engineers. Individual data sheets are printed for each driver and serial number to the matched pairs. The quality produced by these guys is impeccable.

All 26 pairs were pre-sold. The bulk of production (19 pairs) was pre-purchased by the main dealers in Tokyo and Osaka in Japan. 4 pairs were purchased by Tony Wong (Twin Audio) in Hong Kong. The remaining 2 pairs were purchased by private audio collectors on Hong Kong Island and the remaining pair is reserved for a beta tester in Europe.

Plans to make further pairs are likely to go ahead. Possibly we might build another 10 pairs next month. Please contact your dealer, ask them to contact me directly. Any difficulties, please email me: support@markaudio.com

Cheers
Mark.
Attached Images
File Type: jpg Evan-MAOP-1.jpg (151.6 KB, 228 views)
File Type: jpg Jeff-san-MAOP-1.jpg (130.2 KB, 224 views)
File Type: jpg Alp-10_MAOP-White-2.jpg (81.7 KB, 220 views)
File Type: jpg Alp-10-MAOP-white-4-sml.jpg (80.1 KB, 90 views)
File Type: jpg Alp10-MAOP-Graphite-2-sml.jpg (88.8 KB, 97 views)
File Type: jpg Alp10-MAOP-Graphite-4-sml.jpg (90.2 KB, 84 views)
File Type: jpg 0015AB.jpg (151.0 KB, 101 views)

Last edited by markaudio; 29th May 2012 at 12:37 AM.
  Reply With Quote
Old 29th May 2012, 12:34 AM   #130
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
How do we arrange to buy a pair? Also, It stands to reason that the 7.3 may benefit in an even greater way that the 10.2 from this process. Have you considered it as a possible MAOP version?
__________________
...Shape the sound , Man!
  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
Alpair 10 Gen. 2 introduction markaudio Markaudio 185 25th May 2013 05:31 AM
Subwoofer for Alpair 10 Gen.2 Alex_77 Markaudio 1 25th March 2011 06:48 PM
Alpair 6 - Gen 2. - Prototype 1 markaudio Markaudio 53 11th November 2010 04:18 AM
alpair 6 + 10 gen 2, availiable Monday norman bates Full Range 2 18th September 2010 09:46 AM
When is the alpair 10 gen 2 coming out ? norman bates Markaudio 10 1st March 2010 10:22 AM


New To Site? Need Help?

All times are GMT. The time now is 09:22 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