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xschop
xschop Posts: 4,684
in Vintage Speakers
8dt3complmmy.png
Don't take experimental gene therapies from known eugenicists.
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  • treitz3
    treitz3 Posts: 18,316
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    WAAAAAAAAAAAAAAAAAAAA!

    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. ~
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  • mhardy6647
    mhardy6647 Posts: 33,030
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    Diffuser for the Stu Hegeman-designed EICO HFS-2 loudspeaker?

    ojapb2j2m7lp.jpg


    juiqsq8bir6r.jpg

    images from: https://www.audioasylum.com/cgi/vt.mpl?f=vintage&m=176804

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  • [Deleted User]
    [Deleted User] Posts: 10,716
    edited April 2017
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    un-tippable beer glass?
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  • vmaxer
    vmaxer Posts: 5,116
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    DSkip wrote: »
    Tony's hearing aid?

    @tonyb gonna git you fer that un.
    Pio Elete Pro 520
    Panamax 5400-EX
    Sunfire TGP 5
    Micro Seiki DD-40 - Lyra-Dorian and Denon DL-160
    PS Audio GCPH phono pre
    Sunfire CG 200 X 5
    Sunfire CG Sig 405 X 5
    OPPO BDP-83 SE
    SDA SRS 1.2TL Sonicaps and Mills
    Ctr CS1000p
    Sur - FX1000 x 4
    SUB - SVS PB2-Plus

    Workkout room:
    Sony Bravia XBR- 32-Inch 1080p
    Onkyo TX-DS898
    GFA 555
    Yamaha DVD-S1800BL/SACD
    Ft - SDA 1C

    Not being used:
    RTi 38's -4
    RT55i's - 2
    RT25i's -2, using other 2 in shop
    LSI 15's
    CSi40
    PSW 404
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  • Nightfall
    Nightfall Posts: 10,067
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    DSkip wrote: »
    Tony's hearing aid?

    Wasn't he in "The Hobbit" series as one of the dwarfs?

    Oin.jpg
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • TennMan
    TennMan Posts: 1,264
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    A binder clip that has been supersized?

    j9mq10pmm0t0.jpg
    • SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
    • Crossover upgrades by westmassguy
    • Marantz 1504 AVR (front speaker pre-outs to Adcom 555)
    • Adcom GFA-555 amp · Upgrades & speaker protection added by OldmanSRS
    • Pioneer DV-610AV DVD/CD player
    • SDA CRS+ · Hidden away in the closet
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  • westmassguy
    westmassguy Posts: 6,850
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    New Flux Capacitor?
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • xschop
    xschop Posts: 4,684
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    Well, Mhardy kept it in the audio realm. I'll have to rethink my beer mug design however. WMG is the inspiration.
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,684
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    Sorry, no innovative free-energy apparatus to report on. Just a MW side-project to my CRS project. Besides the usual power grab and sound mat addition, I clipped the extra mount tabs with some high torque diagonal cutters which did a splendid job. While doing so I thought some lightweight conical plastic stand-offs for the sound barrier/BH5 would be a nice solution for the CRS similar to what WMG posted about in his CRS build without having to add inner walls/bafles. The 5" dimension would probably be a little too long in a factory set CRS boxes...

    aaay29mqo088.jpg
    u3lmre38gx82.jpg
    Don't take experimental gene therapies from known eugenicists.
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  • westmassguy
    westmassguy Posts: 6,850
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    The baffles were designed to mimic what we do to other SDAs/Monitors from the era, Dacron and BH5, without displacing anymore internal volume than necessary. Not sure how the cones would accomplish that.
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • xschop
    xschop Posts: 4,684
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    I decided not to add extra inner baffles when they were built. 1" HDF and full billet fascia is heavy enough. The cones will displace @ 140cc ea. and the OD of the circular BH5 wont touch the passive.
    Don't take experimental gene therapies from known eugenicists.
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  • F1nut
    F1nut Posts: 49,794
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    I'm trying to understand what benefit there is to clipping off those tabs?
    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

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  • machone
    machone Posts: 1,473
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    It reduces TRR (Tab Related Reflections).
    Mojo Audio Illuminati v3>>Quantum Byte w/LMS>>Rpi/PiCoreplayer>> Starlight 7 USB >> Mojo Audio Mystique v2 SE>>ModWright SWL 9.0 SE Signature>>Hafler DH-500 Amp+ (Musical Concepts Fully Modded)>>
    SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
    1KVA Dreadnought

    Marantz SA 8005
    Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
    Yamaha TX-540 Tuner...Sony BDP-S570
    Sony PS4

    Separate subpanel with four dedicated 20 amp circuits.
    1. Amplification 2. Analog 3. Digital 4. Video

    "All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
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  • heiney9
    heiney9 Posts: 25,079
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    F1nut wrote: »
    I'm trying to understand what benefit there is to clipping off those tabs?

    Me too! It's like taking the caps off the stems of your tires and then saying, it's more aerodynamic.

    I mean they are his to do with what he pleases, but seems like a complete waste of time, or maybe I'm not understanding entirely. The drawing and his explanation (and single photo) don't match up to me.

    H9

    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • xschop
    xschop Posts: 4,684
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    Can't claim an OCD diagnosis. A non-scientific good-old-fashioned explanation... I felt like it.
    It would matter in an F1 car.... Saves a few grams wt. lol.

    Science wise, doesn't the cone push and pull air molecules through the frame?

    Don't take experimental gene therapies from known eugenicists.
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  • F1nut
    F1nut Posts: 49,794
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    Hmmm.....it could be that they have an aerodynamic effect, directing the air flow and perhaps act as a damper for the backwards movement of the cone, kind of like an air brake, if you will. >:)
    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

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  • xschop
    xschop Posts: 4,684
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    Or introducing laminar flow impedance, exacerbating air turbulence.
    Don't take experimental gene therapies from known eugenicists.
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  • F1nut
    F1nut Posts: 49,794
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    That's likely why they put a hole in the tab.
    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

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  • pitdogg2
    pitdogg2 Posts: 24,559
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    shaking my head.....
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  • xschop
    xschop Posts: 4,684
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    ....or the factory just wanted to confound future generations.
    ....or the baskets could be used for dual VC applications and rotated 90 deg.
    ....or positioning in the form for the stamp die....
    ....or.....yada yada
    Don't take experimental gene therapies from known eugenicists.
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  • tonyb
    tonyb Posts: 32,906
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    vmaxer wrote: »
    DSkip wrote: »
    Tony's hearing aid?

    @tonyb gonna git you fer that un.

    Yeah.....funny guy ol' Skip. Least I can walk without tripping over my own toes. lol
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • westmassguy
    westmassguy Posts: 6,850
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    My head hurts
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • ken brydson
    ken brydson Posts: 8,649
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    westmassguy wrote: »
    My head hurts

    Beat me to it...
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  • F1nut
    F1nut Posts: 49,794
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    What.......just a little audio humor.
    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

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  • lightman1
    lightman1 Posts: 10,776
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    Oi! Let the man experiment.
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  • F1nut
    F1nut Posts: 49,794
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    Nobody is stopping him or telling him not to. I was seriously interested in the reasoning.
    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

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  • Nightfall
    Nightfall Posts: 10,067
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    I could be wrong, but I don't think he really has one.

    "Because reasons" is the reason.
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • xschop
    xschop Posts: 4,684
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    This side project is just shadowing what WMG did here. His baffles were 49 sq.in.
    Mine will be 44 sq.in. but circular. Maybe more dia. if the Sonic barrier squeezes thru the MW holes without fuss....


    http://forum.polkaudio.com/discussion/169838/sda-crs-crs-something-different
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,684
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    I changed the 3" dimension that matches the MW magnet base OD.... 2.125"

    Cones are now only displacing 100cc of air and the Aleens is setting the polypropylene perfectly...

    I'll be using 2 pieces of 1/2" thick sound foam with self-adhesive sandwiched together at the base and they wont move....

    90v326hcpast.jpg
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,684
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    Two down, two to go....

    0ia0z6lxelp9.jpg

    onawr98fcxd6.jpg

    Don't take experimental gene therapies from known eugenicists.
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