Polk Audio SDA SRS Modification Thread Part 2 - The "Ultimate Build"

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Comments

  • VR3VR3 Posts: 24,270
    I wanted to mention I was able to play the SDA SRS with the C Coil (.15 DCR) on a cheap receiver up to about 80-85 DB without any type of issues.
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 24,270
    Little update

    "The speakers sound spectacular. Much more open and detailed than with the original crossovers, and they really open up the music. If they will improve as the new parts get conditioned & burned in there won't be enough superlatives to describe them! To help accelerate the burn-in tomorrow the tuner will be hooked up and kept on when not using the CD player.

    Tomorrow I may try them without the front covers and the internal light dialed up. When seated I may be looking right into the windows.

    You have made a great speaker exceptional and resolved the problems with capacitors at or beyond their life expectancy, and the "old" technology being outdated.

    Thanks for putting this project together. "
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 24,270
    200 hour update -

    A tuner was used to run the stereo system for the past 10 days with little "off" time, passing the 200 hour mark yesterday.

    When now playing the same CD as in the first few hours the soundstage is much broader and deeper, and the richness and detail in the material is substantially increased (at least 30% to 35%).

    The system now shows how many CDs are not recorded with a lot of depth and richness to the material. Those CDs with "depth" to the recording really come to life. The best example is with triangles on one recording where the strike, resonance, and decay of the tone is real and "suspended in air." The tight control over the bass now also brings out nuances that were not even heard with the original crossovers.

    The speakers sound better than anything I've ever experienced! Thanks for making this happen, and for all of your time and effort. Let me know if there I anything I can do to help with your future projects.

    He is using an assortment of high powered Krell gear with a large spacious room :)
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • nooshinjohnnooshinjohn Posts: 23,237
    wow...
    WHen I get around to doing the SRS/M cabinet project, I might want to do something similar.

    Congrats to both of you for raising the bar for the rest of us to follow.
    The Gear... Carver "Statement" Mono-blocks, TriangleArt Reference SE with Pass Labs Xono Phono Preamp, Walker Precision Motor Drive, ClearAudio Goldfinger Statement V2 cartridge and Origin Conqueror Mk3c tonearm, Polk Audio "Signature" Reference Series 1.2TL with complete mods, Pass Labs X0.2 three chassis preamp, PS Audio PerfectWave DAC MkII, Pioneer Elite SC-LX701, Oppo UDP-205 4K Blu-ray player, Sony XBR70x850B 4k, Polk audio AB800 "in-wall" surrounds.

    “Every record has been destroyed or falsified, every book has been rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered…History has stopped. Nothing exists except the endless present in which the party is always right” — George Orwell

    “If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it.”
  • VR3VR3 Posts: 24,270
    Definitely man, I just ask to mix it up how it looks and is constructed. Maybe we can talk up on a cool design for it :)

    Thank you for the compliments! :)
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 24,270
    The speakers at their homej1z297eo2owk.jpg
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • xjghostxjghost Posts: 997
    Wow..... That is so cool!
    HT/2Channel: Emotiva MMC-1, Adcom GFA-555II, Polk SDA 3.1's, Teac TN-300 TT, Polk Center and Sub.

    Bedroom system: Carver CT-24, Parasound HCA-800II, Monitor 10's

    Additional projects: RTA 12c's
  • txcoastal1txcoastal1 Posts: 11,729
    mrbiron wrote: »
    Trey, your work has evolved into something quite awesome.

    He's fooling you, his Transformer robots do all the work while he sleeps

    Nice job

    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC

    erat interfectorem cesar et **** dictatorem dicere a
  • VR3VR3 Posts: 24,270
    Thanks guys!! :-D

    The Transformers do way more work than me... lol (I wish)
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • Awesome!!! I would love to hear them, I can only imagine.
    Yamaha RXA1030, Yamaha CD, Bluesound node 2i, Tidal
    Polk SDA2btl highly modded
    Polk SDA 1C
    Polk CS350 LS x2
    Polk m5jr
    Kimber 8TC
    Sony 55" Bravia
    Wish list SVS sub

  • VR3VR3 Posts: 24,270
    Thank you sir :)
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 24,270
    edited June 2015
    The owner sent me some updated photos!

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    ey2abvc516iv.jpg

    2.jpg 24.4K
    4.jpg 153.6K
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • ptrooperptrooper Posts: 460
    edited August 2015
    Hey Trey
    Would these upgrades change the s/n ratio , sensativety and frequency response etc?
  • VR3VR3 Posts: 24,270
    Technically speaking, no, but you can generally see small differences between stock and modified crossovers. It is within the specifications of the speakers.
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • F1nutF1nut Posts: 45,621
    FYI, speakers do not have a signal to noise ratio spec.
    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 t-u-r-d by the clean end."


    President of Club Polk

  • VR3VR3 Posts: 24,270
    +1 DSkip, I would say the signal to noise ratio on stock crossovers is 100%, It receives a signal and outputs noise... ;) heheheh
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • ptrooperptrooper Posts: 460
    @F1nut good to see your on the ball ,,just testing ya : )
  • Toolfan66Toolfan66 Posts: 14,661
    edited August 2015
    Not sure if anyone else has noticed this but the use of the Clarity MR caps took the longest to settle in comparison to other caps I have used, (Sonic, Solen)..
  • Moose68BashMoose68Bash Posts: 3,760
    Of the four sets of crossovers Vr3 Mods has done for me, the most recent set, using Clarity MRs, took by far the longest to burn in -- over 300 hours. There was significant improvement at the 250 hours point, but somewhere north of 300-325 hours my SDA SRS 1.2TLs really blossomed, opened up. An amazing experience! :)
    Family Room, Innuos Statement streamer with Morrow Audios USB cable to DirectStream DAC w/Bridge II; AQ Sky XLRs, McIntosh MC 220 Tube Pre; AQ Sky XLRs, CAT 600.2 Dualmono Amp, Morrow SP7 Speaker Cables, SDA SRS 1.2tls (RD0198s, Dreadnought, Black Hole 5, Acousta-Stuf, Dynamat Extreme, JBWeld. Vr3 Mods: "The Abbot" Monastery-Level Xovers, Custom Internal Wiring, Binding Post Plates, & SDA ICs).

    Exercise Room, Wadia 171 iPod Dock, PS Audio PerfectWave Transport, Innuos Streamer with Cat 6 cable connection to PS Audio PerfectWave MkII DAC w/Bridge II, AQ Sky XLRs, Perreaux PMF3150 Amp, Dreadnought, Supra Rondo 4x2.5 Speaker Cables, SDA 1Cs (Vr3 Mods Xovers).

    Synology 713+ NAS on Gigabit LAN serving PW MkII DAC & DirectStream DAC.
  • VR3VR3 Posts: 24,270
    I remember when the MR capacitors on my Super Towers were breaking in, me and @lightman1 were here enjoying a few glasses of alcoholic beverages around Thanksgiving. We were going through the paces on the Super Towers and it was like a switch was hit, they simply blossomed into this whole other dimension of insanity.
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 24,270
    VR3 wrote: »
    Ok, after many designs and a lot of thrown away pieces we had to find a handle design that worked. We went with a throw back of the old but more substantial, milled from 1" wide, 1/2" deep aluminum

    This will come together quickly, everything gets painted soon and everything will be pre-wiredxe38273ab06j.jpg
    before it goes on the chassisnhvkj6gg0ua2.jpg

    @xschop example 1
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • xschopxschop Posts: 2,066
    edited October 2020
    So cool, reminds me of a Pass Labs design/look. Nice job again.
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