Documenting: My SDA-1c upgrades from start to finish

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  • F1nut
    F1nut Posts: 50,088
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    You made your bed.
    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

  • Gardenstater
    Gardenstater Posts: 4,281
    edited January 10
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    JMO here but I think the ears are more sensitive to distortions in the time domain vs harmonic distortions, when it comes to bass frequencies. For that Julian could have done impulse response and a Cumulative Spectral Decay (CSD) plot.

    I thought it was interesting in that review though that he said the low harmonic distortion he measured in the ultra low bass frequencies (only 3.2% at 20Hz) were said by Polk to be due to some improvements that they made in the Passive Radiator design.

    Rob can attest to the fact that the suspensions of certain MWs can become very sloppy with usage over time too. It would be interesting to measure the compliances of these drivers in the 1C and compare to their design target when they came off the line. The PRs no doubt get more compliant with usage as well and we don't know what the values were supposed to be when new.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • xschop
    xschop Posts: 4,837
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    Someone found J. Hirsch's original test subjects.... Maybe they can repro his measurements....

    pdiquqdyonkl.png
    Don't take experimental gene therapies from known eugenicists.
  • plastic_avatar
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    Are there any openings to tv shows, with a really good theme song, where there's a shot of someone eating a hotdog? I think I remember one, but can't put my finger on it...

    Oh! Side note:

    Since bumping the bass 1 click past bypass on the pre largely fixed my air pressure gripe with the 1C's new placement, I tried 2 of my EQs to see how they sounded with the current setup. Oof. Did not like. Killed the feeling of air vibrating around instruments. Off to ebay with them! But I'm keeping the Teac with the colored lights for the old Realistic system in the living room ;)
    The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage
  • Astrl55
    Astrl55 Posts: 62
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    Your obsession with hot dogs is disturbing.
  • Viking64
    Viking64 Posts: 6,841
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    Gronk can fit 9 hot dogs in his mouth. That's the equivalent of 27 Tom Brady cocktail wieners.
  • Toolfan66
    Toolfan66 Posts: 17,051
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    .... . / . -. .--- --- -.-- ... / -... ..- -.- -.- .- -.- .
  • pitdogg2
    pitdogg2 Posts: 24,930
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    OH MY GOD.... I'm dying here :D:D:D
  • VR3
    VR3 Posts: 28,310
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    When I joined in 2003... The collective here would roast newbies into submission. The group is waaayyyyyyyyyyyyyyyyy more welcoming than ever before.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • mhardy6647
    mhardy6647 Posts: 33,356
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    VR3 wrote: »
    When I joined in 2003... The collective here would roast newbies into submission. The group is waaayyyyyyyyyyyyyyyyy more welcoming than ever before.

    I guess we only roast weenies now...
    B)

    https://youtu.be/QOLTwt-bqoU?si=dC5Xq901FGvVWwCd
  • Gardenstater
    Gardenstater Posts: 4,281
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    Yeah I guess if being a member since 2009 makes him a ........newbie?
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • plastic_avatar
    plastic_avatar Posts: 694
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    Wow. I just realized I took a break from all this drama and never posted the reply that's sat here in the queue since January.

    Huh.

    Go figure.

    It's nice that there seems to be a slight change in the admin activity here lately. I should get back into things...

    I do enjoy a good hot dog, but I'm more a Hebrew National kind of guy. ... --- / .. / .- -- / .--. .. -.-. -.- -.-- / .-- .... . -. / .. - / -.-. --- -- . ... / - --- / .-- .... .- - / .. / .--. ..- - / .. -. / -- -.-- / -- --- ..- - ....

    [erases unsent response]

    Ah! That's better.


    Brief 1C updates
    • The Daytons continue to do a good job. Before I decide to sell the spare Polk drivers sitting around, I'm going to swap the 194 back in for comparison.
    • For a new test, I'm going to swap the drivers from the M12 into the stereo slots on the 1C. Some people like that swap, and Polk said it was o.k., so why not give it a listen?
    • I started using the parametric EQ on the WiiM Mini last week. Wow. I'm not interested in another EQ debate, so take that somewhere else. What I noticed was, after hours of tweaking, the WiiM Mini's EQ does a better job than my standalone EQs (even when using a mic and pink noise to calibrate). Everything is clear. No muddying. Everything is as it should be, but better. Sharper. Better tone. In lieu of room treatments that are years away, I'll take this surprisingly nice 4 channel parametric as a stopgap until I can go another route.
    • xschop's recent Dreadnaught work has me inspired. I can't afford it right now, but making a Dread and 3D-printing the case is definitely on my list.
    • The remastered version of Holy Diver is fantastic. That CD was one of many that helped get me through 12th grade. It sounds great on the 1C. There's not a lot of SDA goodness, but goodness! It sounds soooo good!
    • To go back to the EQ entry... it really did make a huge difference. The room is unfinished. There's concrete, open ceilings, etc. It eats different frequencies in different places. How much it helped, compensating a little at the source, was a surprise. Pleasant. Very nice.
    The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage
  • skipshot12
    skipshot12 Posts: 1,075
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    I’m obsessed with hot dogs meself.
    Wish someone in Laramie made a good footling chili cheese dog….. along the lines of a Rut’s Hut in jersey.
    No other choice than to make em at home.

    Apologies on the hot dog hi-jack of your thread…..