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  1. #1

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    Default In Praise of Trey dba "Vr3 Mods"

    When I started my quest for better and better sound from my stereo rig in the late fall of 2011, I had no idea where the Pied Piper of the Polk Forum – aka DarqueKnight – would lead me. I didn’t even know it was a rabbit hole I was facing!

    I had sought and acquired a pair of SDA SRSs, like those I had coveted some 22 years before.

    Then, I went after a bigger, more powerful Perreaux amplifier, like the one I had coveted when I first heard it driving those SRSs in1989.

    After I installed the SRSs and a close approximation of that big Perreaux amplifier, however, I realized that the vintage electronics just weren’t up to driving the SRSs to the level I sought. So, I bought the latest and greatest Perreaux preamp and monoblock amplifiers – NOT COMMON GROUND, I need to emphasize – and I had a big problem!

    And then the fun began: On the advice of Perreaux’s lead engineer, DarqueKnight’s Dreadnought came to the rescue! Building a rudimentary Dreadnought was a challenge even I could manage, given the clear and precise instructions DK provided all of us.

    But, once the Dreadnought solved that frightening mismatching-ground problem, DarqueKnight’s irresistible piping in thread after thread led me to covet ever higher performance and requisite modifications of the SRSs. I had never imagined in my wildest fantasies where vintage Polks could go! Kind of like the Star Trek of the Kingdom of Audiophilia – new worlds where no man – except DarqueKnight himself – had ever gone.

    But DQ is an accomplished Electrical Engineer, and I’m a mere mortal – that is, a retired HR executive – whose last close contact with a soldering iron was when he earned his novice ham radio operator’s license (KN9MXH) in 1958 (or thereabouts) and tried to assemble a Heathkit receiver.

    August 2012: Enter Trey Roseman, doing business as “Vr3 Mods,” best described as the “Equalizer” for technically challenged newbies like me. With trepidation, I contacted Trey about building new crossovers with 21st century capacitors, resistors, and inductors; a Gimpod circuit board, and replacing the SDA inductors and binding posts with contemporary, audiophile-grade components.

    Trey is remarkable to work with. Not only did he give sound advice about the components that should be specified in his projects, he gave me advice in a manner that made me confident that he sincerely had my interests in mind, not how to maximize his profit at my expense! I felt sure that he was in the business because he loves the work he does and wants to improve the sound his customers get from their speakers.

    Furthermore, Trey had the patience and tenacity to give me, a real newbie, clear and concise instructions about how to remove the crossovers and binding post cups and package them for mailing, as well as to make very clear how the wiring harnesses should be labeled to make reassembly easy!

    Of course, the proof of “the pudding is in the eating,” or more precisely the proof of the speaker mods is in the listening. And here Trey’s product exceeded my highest expectations.

    Immediately after installation, the sound reproduction of my system was dramatically improved. Most noticeable from the very beginning was the improved reproduction of the music at significantly lower volume. As my wife and I put more and more hours on the new crossovers and other components, the vintage SRSs opened up like a fine old Burgundy.

    The sound stage was wider, higher, and deeper. Highs were clearer, and transients faster and better defined. Midrange performance was dramatically improved, and bass was tighter and carried the timbre of instruments far more clearly.

    After the necessary “burn-in” time, the performance of the speakers reached a level of realism that I had not expected. As I have noted in other posts, however, I began to hear more distinctly what I called a “muddle in the middle” of complex orchestral music. The question was, “Was this a limitation of the speakers and their new components or of other elements in my system?”

    Since I installed the Vr3 Mods in my SRSs, I have introduced several other changes in my system – including Audioquest Sky interconnects between the preamp and my monoblocks, a Silver Circle Audio Pure Power One 5.0 power conditioner on a dedicated circuit, upgraded power cords on all components. The “muddle in the middle” is virtually gone.

    What does this say about Trey’s Vr3 crossovers and other mods? It says that they were up to the task of carrying their “weight” in rendering the best sound out of my system when these other “supporting” upgrades were added to the mix.

    The strongest endorsement I can offer of Trey and Vr3 Mods is that I sent the crossovers and binding post cups from my SDA 1Cs to him for similar modifications. In the course of modifying them, he ran into a problem with getting the correct inductors. He explained the problem, kept me informed, and completed the work as expeditiously as he could.

    Now, he has given me advice about how to build power cords for my CD player and preamp, including both materials to use (e.g., Supra Rondo Lo Rad 2.5 cable) and how to achieve a 9-AWG equivalent cord with shotgun construction.

    I am not a seasoned audiophile who can call up all the right terms to describe how my speakers were improved by Trey’s fine work, nor am I a technical expert who can provide scientific data to verify the differences in performance that I – and more important, my wife – hear.

    I am, however, a customer and now a friend who has complete confidence in Trey and who appreciates the exceptional work he does with sincere concern for the product he delivers and the experience his customers have throughout the process of modifying their speakers with Vr3 Mods products.

    As Toolfan66 says, “Trey for Polkie of the year!”

    Pictures of a new and old crossover and of the new SDA interconnect cables Trey fabricated with my prototype plywood Dreadnought enclosure and the new SDA inductor installed in one of the SRSs:

    Click image for larger version

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    Last edited by Moose68Bash; 03-15-2013 at 12:05 AM.
    Family Room
    Cambridge Audio Azur 840C CD Player, King Cobra XLRs
    Perreaux SM6P MKII Preamp, AQ Sky XLRs
    Perreaux Prisma 750 Amps, Morrow SP7 Cables
    SDA SRS 1.2as (RD0194s, Dreadnought, Black Hole 5, Acousta-Stuf, Dynamat Extreme, JBWeld. Vr3 Mods: Xovers & Binding Post Cups, SDA Inductors & Interconnect Cables)

    Exercise Room
    Wadia 171i, Supernova 6 Glass Toslink
    CA Azur 840C, AQ King Cobra RCAs
    Perreaux SM6P Preamp & PMF3150 Amp, AQ King Cobra RCAs
    Dreadnought
    SDA 1Cs (Mod'd)

  2. #2

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    Phil,

    It is comments like this that make this worth it.

    Thank you for such kind words and I look forward to our future contact! :)

    I must mention that Phil is a gentleman and a scholar, second to none!

    Thank you sir!
    www.Vr3Mods.com ///// www.Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro

  3. #3

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    Trey,

    You are welcome!

    I apologize for the screwy appearance of the pictures -- that is, the oversized version of probably the least important picture. I have no idea how or why the third picture is huge and the first two are small. I have a lot to learn about this Forum, as well as stereo equipment.

    Phil
    Family Room
    Cambridge Audio Azur 840C CD Player, King Cobra XLRs
    Perreaux SM6P MKII Preamp, AQ Sky XLRs
    Perreaux Prisma 750 Amps, Morrow SP7 Cables
    SDA SRS 1.2as (RD0194s, Dreadnought, Black Hole 5, Acousta-Stuf, Dynamat Extreme, JBWeld. Vr3 Mods: Xovers & Binding Post Cups, SDA Inductors & Interconnect Cables)

    Exercise Room
    Wadia 171i, Supernova 6 Glass Toslink
    CA Azur 840C, AQ King Cobra RCAs
    Perreaux SM6P Preamp & PMF3150 Amp, AQ King Cobra RCAs
    Dreadnought
    SDA 1Cs (Mod'd)

  4. #4

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    Nice write up. Sid the Kid has come a long way.......you have no idea.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

  5. #5

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    Very nice write up!!


    DQ hahaha!!! Now I'm hungry for a blizzard.
    Hot Rodded SDA 1.2TL's, SDA 1C's, SDA CRS+'s...
    Powered By Wyred 4 Sound, STP-SE, SX-1000...
    MIT-Shotgun's ...

  6. #6

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    Very nice piece. Trey keep up the good work.

  7. #7

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    Nice review!
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills, polyswitches removed, Lg Solen inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR binding posts, upgraded IC Cable, Black Hole Damping Sheets (3" strips) installed on back wall behind MW's & Tweeters, interior of cabinets sealed, AI-1 interface with 1000VA transformer

  8. #8

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    Quote Originally Posted by Toolfan66 View Post
    Very nice write up!!


    DQ hahaha!!! Now I'm hungry for a blizzard.
    How many times I went over that piece, and I still missed a typo! I guess I concentrated too much on trying to fix the problem with the pictures.

    DarqueKnight, please accept my apologies.

    On the other hand, I wouldn't mind a DQ Blizzard this morning!

    Cheers!

    PS: Toolfan66 and F1nut, thank you for your kind words. "Sid the Kid?"

  9. #9

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    Quote Originally Posted by F1nut View Post
    Nice write up. Sid the Kid has come a long way.......you have no idea.
    I can remember when Trey first came to C.P. I was also new here. He was about 12-13 yrs. old and had more questions than anybody could ever answer. Borderline "Annoying" He has learned far more than I'll ever know about all things Audio, and taken his passion and turned it into a viable business. I applaud his efforts and his work is second to none.
    SDA CRS+4.1TL's/Modded SDA 1C's/Modded SDA SRS 3.1 TL's/Modded SDA SRS 2.3TL

  10. #10

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    Nice write-up. Thanks for taking the time to share your experience.
    Craig

  11. #11

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    Quote Originally Posted by F1nut View Post
    Nice write up. Sid the Kid has come a long way.......you have no idea.
    I was going to mention something along those lines. We had much entertainment at his expense back when he was what, 12? He grow'd up good!

  12. #12

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    Quote Originally Posted by vcwatkins View Post
    Nice write-up. Thanks for taking the time to share your experience.
    Craig
    You are welcome and thanks for your kind words, Craig.

    And thanks to you guys for clearing up the meaning of the allusion to Sid the Kid!

    Phil

  13. #13

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    I think you made Trey blush!!!

    I too am working with Trey, he is a great guy to work with. I ordered some caps from him a couple of months ago for a crossover upgrade project. I received the order in a timely fashion, but later expressed concerns (buyers remorse) if I made the right decission to go with my original purchase or if I should have gone all-out with the very best that Trey has to offer.

    Trey understood my concerns and after much research (and debating with myself) for a couple of months, I expressed to Trey that I wanted to send the caps back. He kindly offered and gave a prompt refund (I have him working on another speaker related project for me, so I received the cost difference back). The caps were unused. I then went ahead and purchased the best caps that Trey has to offer which I should receive next week.

    Everything that is mentioned in this thread about Trey I totally agree with. He is a true audiophile and is a pleasure to work with while keeping our best interests in mind.
    Statistics show that 98% of us will die at some point in our lifetime.

    The other 2% will work for WalMart.

  14. #14

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    Quote Originally Posted by vcwatkins View Post
    Nice write-up. Thanks for taking the time to share your experience.
    Craig
    Yes, A very good write-up Phil, love it when a plan comes together, makes everything worthwhile. N'joy
    SDA CRS+4.1TL's/Modded SDA 1C's/Modded SDA SRS 3.1 TL's/Modded SDA SRS 2.3TL

  15. #15

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    Nice review on your experience.

  16. #16

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    I'll jump on the Trey love fest. My SDA-1C and RTA-12C sing because of his handy work. Great write up.

  17. #17

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    me too. i have done nothing but ask small questions, ask for a little advice, and bought a few caps and resistors to do my own work.
    prompt emails, prompt shipping, and genuine interest at my progress and needs... besides just being an all around great guy, i think if he had extra time he could teach seminars on what real customer service can and should be.
    Polk RTA 11T ....new Xovers( Gen1 + Mundorf MOX), rewired, damped, Armacell, rings, spikes, RDO-194....
    B&K Ref. 200.2
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  18. #18

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    You guys are just too kind...

    Thank you all so much and I look forward to our future encounters!! :)
    www.Vr3Mods.com ///// www.Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro

  19. #19

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    If you ask real nicely, Trey will even come to your house to install the crossovers (provided that you are within a 10 mile radius from his house). Rick

  20. #20

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    Rick is a gentleman and a scholar... He even provides an audience... Aka... The cats.... Haha

  21. #21

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    I will be writing a review myself soon. Had my LSi15s and LSiC upgraded and it was totally worth it. I wish more companies had customer service as good as Trey, certainly would make life easier haha.

  22. #22

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    Default Update on SDA SRS1.2 Mods

    Today, my wife and I put in a CD that is a bit off the beaten track for us -- David Johansen and the Harry Smiths from Chesky Records. This is their 1999 Chesky recording; frankly, I can't read the title of the disc on the brochure.

    While the music is not our usual fare, the sound reproduction is absolutely extraordinary.

    The SRS are about 12 feet apart, center to center. The "sweet spot" is a virtually perfect apex of an equilateral triangle in front of them.

    The sound stage extends about six feet outside the speakers on each side. The depth sounds and feels like it is about 10 feet with the front edge about six feet in front of the sweet spot, and the height rises about a foot above the top of the speakers.

    The singer is perfectly positioned; he appears virtually right in the middle and in front of the instruments. The instruments are well located with the drums up and behind the singer. The bass is on the left and slightly further back than the singer. Guitars and banjo are right or left and on the same horizontal plane as the singer.

    The timbre of each instrument comes through clearly and accurately. Some of the special sound effects -- electric guitar and percussion -- are profoundly effective. Transients are clean and precise, regardless of the instrument and the frequency range.

    Bass is tight and punchy -- very clear and affective. And I mean "affective," not effective -- my wife and i feel the bass as well as hear it. (It is effective, too!)

    This quality of reproduction is as close to the sound of a live performance as I've ever heard from a stereo system.

    I can't resist comparing the sound of the SRS1.2s to the 1Cs, on which I recently completed comparable mods (with a lot of help from Trey and many other Polkies). At this point, the SRSs seem to produce a softer sound and greater detail at lower volumes; the 1Cs a brighter sound with somewhat more bass emphasis. These are two different systems in two dramatically different location. Both sets of speakers reproduce sound remarkably well -- extraordinarily pleasing over extended listening sessions. I love them both!

    As my wife put it, "This is not a singer we would normally like, but the sound is so good you have to listen to it!"
    Last edited by Moose68Bash; 04-11-2013 at 10:13 PM.
    Family Room
    Cambridge Audio Azur 840C CD Player, King Cobra XLRs
    Perreaux SM6P MKII Preamp, AQ Sky XLRs
    Perreaux Prisma 750 Amps, Morrow SP7 Cables
    SDA SRS 1.2as (RD0194s, Dreadnought, Black Hole 5, Acousta-Stuf, Dynamat Extreme, JBWeld. Vr3 Mods: Xovers & Binding Post Cups, SDA Inductors & Interconnect Cables)

    Exercise Room
    Wadia 171i, Supernova 6 Glass Toslink
    CA Azur 840C, AQ King Cobra RCAs
    Perreaux SM6P Preamp & PMF3150 Amp, AQ King Cobra RCAs
    Dreadnought
    SDA 1Cs (Mod'd)

  23. #23

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    Default List of Mods on These SDA SRS1.2s

    Here is a list of all mods on my SDA SRS1.2s:

    1. Installed RDO 194 Tweeters
    2. Installed Crossover Upgraded by Vr3 Mods
    a. Gimpod Boards
    b. Clarity Caps
    i. Tweeter Network: Clarity Cap ESAs
    ii. Midbass Network: Clarity Cap SAs
    c. Mundorf Mox Resistors
    d. Jantzen Perfect-lay Inductors: Board-mounted & SDA
    3. Custom SDA Interconnect Cables by Vr3 Mods
    a. Supra Rondo 2.5 Cable
    b. Neutrik speakOn NL2FC Male Connectors (Speaker Ends)
    c. Banana Connectors (Dreadnought Ends)
    4. Custom Aluminum Binding-Post Plates by Vr3 Mods
    a. Upgraded Binding Posts
    b. Neutrik speakOn NLJ2MD Female Jack Receptacles for SDA Cables
    5. Dreadnought SDA Amplifier Interface per DarqueKnight’s Design
    a. Avel-Lindberg 1000VA Transformer
    b. Enclosure Designed and Assembled by Myself
    c. Cardas CCGR Binding Posts
    6. “Larry’s Brackets & Rings” by Toolfan66
    a. Brackets for Tweeters
    b. Rings for MWs and PRs
    7. Black Hole 5 Installed behind Tweeters, MWs, and on Sides in Cabinets
    8. Dynamat Xtreme on MW and Passive Radiator Baskets
    9. Acousta Stuf Polyfill to Replace Stock Polyfill
    10. JB Weld on MW Magnets
    11. Custom-cut Gaskets for PRs (1/4” Neoprene Material)
    12. Spikes: Meniscus “Extra Points Set”
    Family Room
    Cambridge Audio Azur 840C CD Player, King Cobra XLRs
    Perreaux SM6P MKII Preamp, AQ Sky XLRs
    Perreaux Prisma 750 Amps, Morrow SP7 Cables
    SDA SRS 1.2as (RD0194s, Dreadnought, Black Hole 5, Acousta-Stuf, Dynamat Extreme, JBWeld. Vr3 Mods: Xovers & Binding Post Cups, SDA Inductors & Interconnect Cables)

    Exercise Room
    Wadia 171i, Supernova 6 Glass Toslink
    CA Azur 840C, AQ King Cobra RCAs
    Perreaux SM6P Preamp & PMF3150 Amp, AQ King Cobra RCAs
    Dreadnought
    SDA 1Cs (Mod'd)

  24. #24

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    It's obvious you went all out and used the best of everything in your speakers. I noticed you used RDO-194 tweeters, which are excellent, but I was just wondering if there was not a way you could do a TL upgrade, using RDO-198 tweeters, on either pair of your speakers?
    SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · Crossover upgrades by westmassguy
    Adcom GTP-450 preamp
    Adcom GFA-555 amp · Upgrades & speaker protection added by OldmanSRS
    Pioneer DV-610AV DVD/CD player
    SDA CRS+ · Hidden away in the closet

  25. #25

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    Quote Originally Posted by TennMan View Post
    It's obvious you went all out and used the best of everything in your speakers. I noticed you used RDO-194 tweeters, which are excellent, but I was just wondering if there was not a way you could do a TL upgrade, using RDO-198 tweeters, on either pair of your speakers?
    As far as I know, there is no path to upgrade the 1Cs to make them 1C TLs. Others on the Forum know far more about this than I do, and perhaps they will confirm my opinion or correct it.

    With respect to my SDA SRS1.2s, if I were to start this process over again, I might try to do the upgrade to the RDO 198s and the TL mod. At the time that I began the upgrades, I was under the impression that taking that route was risky and difficult. Somewhere I had read that changing the inductors to effect that upgrade was not a good idea. Since then, others (e.g., DarqueKnight) have asked the same question and have implicitly indicated that I should have/could have done the TL upgrade.

    I have not heard the SDA SRS1.2 TLs; so, I do not know the sonic improvements achieved by the TL upgrade. The fact that Polk Audio invested a good bit of money in it, however, suggests that it must be significant and probably worth the investment.
    Family Room
    Cambridge Audio Azur 840C CD Player, King Cobra XLRs
    Perreaux SM6P MKII Preamp, AQ Sky XLRs
    Perreaux Prisma 750 Amps, Morrow SP7 Cables
    SDA SRS 1.2as (RD0194s, Dreadnought, Black Hole 5, Acousta-Stuf, Dynamat Extreme, JBWeld. Vr3 Mods: Xovers & Binding Post Cups, SDA Inductors & Interconnect Cables)

    Exercise Room
    Wadia 171i, Supernova 6 Glass Toslink
    CA Azur 840C, AQ King Cobra RCAs
    Perreaux SM6P Preamp & PMF3150 Amp, AQ King Cobra RCAs
    Dreadnought
    SDA 1Cs (Mod'd)

  26. #26

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    Quote Originally Posted by F1nut View Post
    Nice write up. Sid the Kid has come a long way.......you have no idea.
    Hehe...yes he has.

    Tom
    In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

    The best way to enjoy digital music reproduction is to never listen to good analogue reproduction.

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    Very nice write up moose68bash. I am just beginning my mods to my 1.2's. Bought the RDO-198 and it begins. I am so glad to hear your experience was very positive and can not wait till the finished product. Like yourself I ran into the dreaded non common amp issue and will most likely have to install a dreadnaught. If I may ask is yours installed inside the cabinet of the speaker? Also did you build it yourself? I can barely write my name let alone hold a soldering gun. LOL
    Thank you
    MCO

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    Not Moose68Bash, but I can answer your question. Do not install the Dreadnaught inside either speaker cabinet. You want it more or less out in the open away from things affected by a very large transformer or things affecting it.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

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    Quote Originally Posted by VCoak View Post
    Like yourself I ran into the dreaded non common amp issue and will most likely have to install a dreadnaught. If I may ask is yours installed inside the cabinet of the speaker? Also did you build it yourself? I can barely write my name let alone hold a soldering gun. LOL
    Thank you
    MCO
    Here you go: http://www.polkaudio.com/forums/show...t+darqueknight

    A great "how to" by a polk master.
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills, polyswitches removed, Lg Solen inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR binding posts, upgraded IC Cable, Black Hole Damping Sheets (3" strips) installed on back wall behind MW's & Tweeters, interior of cabinets sealed, AI-1 interface with 1000VA transformer

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    great thread to find and read. Thanks

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