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| High-end Audio Forum Discussion of high-end audio. (This is where our "Sorry about your wallet" slogan will ring most true.) |
09-21-2008, 10:14 AM
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Headphoneus Supremus 10*2kaiHead-Fi's Most Prolific Poster |
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Join Date: Jan 2004
Location: Oslo, Norway
Posts: 29,773
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Quote:
Originally Posted by Johnny Blue
Do I gather from this current tack that getting a good fart on the Omega II/SR-007 is something to be aimed for? And how does one achieve it (assuming one has a set of the Omegas to begin with!)? (I also assume that, unless one has adopted Birgir's BluTak modification, this farting business is not an issue with the new SR-007 Mk2/A... )
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Guess you can say so. Since a strong and even (on both sides) fart sound mean that you have an air tight connection between the SR-007 and your head.
The lack of air tight connection are said to be part of why the SR-007 MK2 / SR-007A sound different than the SR-007 / SR-007BL.
__________________
:: Feedback ::
MacBook Pro → Isabellina → Signature 30.2 / β22 → K1000
MacBook Pro → Isabellina → Signature 30.2 / β22 → SRD-7 Pro → SR-007BL
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09-21-2008, 10:15 AM
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Headphoneus Supremus
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Join Date: Aug 2002
Location: Reykjavik, Iceland
Posts: 6,341
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The "fart" (I prefer to call it a squeal but each to his own) is a side effect of the airtight seal that the phones produce. All electrostatics can make this noise when pushed against the head (forcing out air) but the SR-007 and SR-001/3 make it in normal use. An airtight seal is always preferred with planar drivers since it cancels out backwave bleed which eats up the bass. The same thing applies to ESL's if you put them on a larger baffle you get more bass output.
Stax did indeed "fix" this issue on the Mk2/A but killed the accurate bass of the Mk1 and SR-Omega. They did the same with my SR-Omega/007 hybrid as can be seen in the pictures I've included and a little blutac had the same effect as on the SR-007A. It's almost as if all the good engineers have quit and we are left with those that don't know what they are doing. A bit like Quad today who really don't know what they are doing by building a time bomb into every speaker....
Quote:
Originally Posted by krmathis
The lack of air tight connection are said to be part of why the SR-007 MK2 / SR-007A sound different than the SR-007 / SR-007BL.
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That affects the bass and the increased height of the earpads screws with the midrange balance. Both are easy to fix though...
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Due to the overwhelming amount of PM's I receive and what little free time I have now, I will only respond to a select few and the rest will go unanswered.
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09-21-2008, 01:39 PM
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Headphoneus Supremus
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Join Date: Apr 2007
Location: NYC
Posts: 2,778
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Quote:
Originally Posted by wualta
StrongFart!
Well? is the sound the most neutral evar, and so on? You can tell us.
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Still listening and need to form an opinion. 
So far so good, sounds nice out of SRM-T1S and SRM-1Mk2 Pro. Unfortunately I do not have a Pro adapter to test it with any of my amps. As far as "most neutral evar", it seems to be flattish similar to LNS but the bass is better and extends forevar 
__________________
Reality is that which, when you stop believing in it, doesn't go away
(c) Philip K. Dick
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09-21-2008, 02:46 PM
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Join Date: Apr 2004
Location: Wisconsin, USA
Posts: 330
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Quote:
Originally Posted by spritzer
A bit like Quad today who really don't know what they are doing by building a time bomb into every speaker....
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OK, I'll bite. How is Quad building a time bomb into every speaker?
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09-21-2008, 04:23 PM
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Headphoneus Supremus
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Join Date: Aug 2002
Location: Reykjavik, Iceland
Posts: 6,341
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Quote:
Originally Posted by WilCox
OK, I'll bite. How is Quad building a time bomb into every speaker?
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Faulty bias supplies will overvolt the panels and destroy them.
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Due to the overwhelming amount of PM's I receive and what little free time I have now, I will only respond to a select few and the rest will go unanswered.
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09-21-2008, 06:00 PM
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Join Date: Apr 2004
Location: Wisconsin, USA
Posts: 330
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Quote:
Originally Posted by spritzer
Faulty bias supplies will overvolt the panels and destroy them.
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That's not good! I've been a planar fan for over two decades now and have been considering the Quads after selling my Maggies. Most of what I've heard about the current Chinese manufactured Quads has been positive. Is the bias problem fixable?
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09-21-2008, 06:08 PM
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Headphoneus Supremus
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Join Date: Aug 2002
Location: Reykjavik, Iceland
Posts: 6,341
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Quote:
Originally Posted by WilCox
That's not good! I've been a planar fan for over two decades now and have been considering the Quads after selling my Maggies. Most of what I've heard about the current Chinese manufactured Quads has been positive. Is the bias problem fixable?
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Just buy a refurbished 57 or 63 like I'm going to do. The build quality of the new units isn't all that good and the restorers do a better job.
The bias issue can be fixed with an after market supply but not by Quad since they are just ignoring it or haven't realized what's going on.
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Due to the overwhelming amount of PM's I receive and what little free time I have now, I will only respond to a select few and the rest will go unanswered.
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09-21-2008, 06:27 PM
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Join Date: Apr 2004
Location: Wisconsin, USA
Posts: 330
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Quote:
Originally Posted by spritzer
Just buy a refurbished 57 or 63 like I'm going to do. The build quality of the new units isn't all that good and the restorers do a better job.
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Great idea! Getting a two pairs of restored 57's and putting together an HQD system would be retro-cool!
(Enough OT!  Now back to STAX!)
Last edited by WilCox; 09-21-2008 at 06:32 PM.
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09-21-2008, 09:57 PM
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Headphoneus Supremus
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Join Date: Apr 2007
Location: NYC
Posts: 2,778
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Quote:
Originally Posted by spritzer
The "fart" (I prefer to call it a squeal but each to his own) is a side effect of the airtight seal that the phones produce.
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How do you position the O2 on your head to achieve airtight seal? I am still playing with positioning and want some pointers 
__________________
Reality is that which, when you stop believing in it, doesn't go away
(c) Philip K. Dick
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09-21-2008, 10:56 PM
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Headphoneus Supremus
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Join Date: Aug 2002
Location: Reykjavik, Iceland
Posts: 6,341
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I have the seam on the earpads pointing forward and about 20-30° upwards towards the temples. The arc assembly slants about 30° forward so it rests above my forehead and not on top of my head.
__________________
Due to the overwhelming amount of PM's I receive and what little free time I have now, I will only respond to a select few and the rest will go unanswered.
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09-21-2008, 11:46 PM
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Headphoneus Supremus
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Join Date: Aug 2007
Location: Rocky Mountains, CO
Posts: 11,663
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Quote:
Originally Posted by spritzer
I have the seam on the earpads pointing forward and about 20-30° upwards towards the temples. The arc assembly slants about 30° forward so it rests above my forehead and not on top of my head.
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Okay, I'll be the first to say we need pics! 
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09-21-2008, 11:52 PM
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100+ Head-Fi'er
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Join Date: Feb 2003
Location: Australia
Posts: 454
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Quote:
Originally Posted by WilCox
Great idea! Getting a two pairs of restored 57's and putting together an HQD system would be retro-cool
(Enough OT! Now back to STAX!) |
Check out the massive Audio Research D150 and Mark Levinson ML2 in the background! I would love to assemble just a stacked pair of Quad 57s - there were instructions for the frame on the net.
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09-22-2008, 12:05 AM
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Headphoneus Supremus
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Join Date: Aug 2002
Location: Reykjavik, Iceland
Posts: 6,341
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Quote:
Originally Posted by HeadphoneAddict
Okay, I'll be the first to say we need pics! |
Nah... I'm fairly sure that Dmitriy will figure it out.
Quote:
Originally Posted by John Buchanan
Check out the massive Audio Research D150 and Mark Levinson ML2 in the background! I would love to assemble just a stacked pair of Quad 57s - there were instructions for the frame on the net.
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Quad released the instructions back in the day but that is the Mark Levinson HQD system which used massive 18" woofers and Decca ribbon tweeters to augment the dual Quads. Today you can get even triple or quadruple stacked 57's if you have pockets deep enough.
__________________
Due to the overwhelming amount of PM's I receive and what little free time I have now, I will only respond to a select few and the rest will go unanswered.
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09-22-2008, 01:22 AM
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100+ Head-Fi'er
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Join Date: Feb 2007
Location: Detroit Area
Posts: 401
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Quote:
Originally Posted by John Buchanan
Check out the massive Audio Research D150 and Mark Levinson ML2 in the background! I would love to assemble just a stacked pair of Quad 57s - there were instructions for the frame on the net.
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Thats not a D150. It's a D79. One of my favorites!!
Last edited by audiod; 09-22-2008 at 01:37 AM.
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09-22-2008, 10:36 AM
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100+ Head-Fi'er
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Join Date: Jan 2007
Location: United Kingdom
Posts: 195
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Quote:
Originally Posted by HeadphoneAddict
Okay, I'll be the first to say we need pics! |
Come on, get real! Birgir can't possibly post pictures of himself wearing Omegas, or anything else for that matter: he doesn't really exist, he is just the product of our collective imaginations. God doesn't exist, so we have to create him! 
__________________
Best wishes,
Johnny Blue
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