"The Minimus" Project

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  • skrol
    skrol Posts: 3,340
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    Very nice cuts. I see you switch to an oval cut out around the tweeter.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • VR3
    VR3 Posts: 28,052
    edited September 2022
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    Yes, same benefits but without harming the off axis performance
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • skrol
    skrol Posts: 3,340
    edited September 2022
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    I pulled the grills off the my C series Minimus 7 and just siting the pads in place you can really hear how they tame some of the peaks in the highs and seem to have better focus. For grins I tried the other round pieces and they do kind of mess up the sound stage. The oval is the way to go.

    A note on the C series - The tweeter bezel is plastic and thicker than the A or B series that have the metal bezel. The thicker plastic bezel with the pad makes it hard to put the grills in place. I don't know how much market there is for these but may need to thin the pad for the C series.

    I am going to try the pads on my B series later but they definitely improve the sound.

    When my friend said that they had tried using felt pads around the tweeters on the Polk speakers with no improvement, I wonder if it was much thinner felt. These things are fairly thick and may do better on the vintage speakers.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • skrol
    skrol Posts: 3,340
    edited September 2022
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    I pulled the grills off the Minimus 7 C and just have the pads sitting in place. They really do tame some of the peaks in the highs. They are more focused and cleaner sounding. It is kind of surprising the difference with them on vs off. A definite improvement.

    One note for the Minimus 7 C. The tweeters have a thicker plastic bezel compared to the A and B with the thinner metal bezel. The thicker plastic makes it harder to fit the grills with the pads in place. I’ll try the pads on the B set later.

    d8u04vbq3ja6.jpeg
    qqaiev5y56zx.jpeg


    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • skrol
    skrol Posts: 3,340
    edited September 2022
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    I tried them on the B version and the difference seems more subtle than the C version. The C normally is a little brighter than the B in spite of having basically the same tweeter. I was attributing it to possibly capacitor age. The XOs have the same value components but layout is a little different. Another difference is the B has fiberglass fill and the C has Daycron fill, not that it would impact the highs.

    40-2030B with pad
    jy7x1unlvr1o.jpeg

    40-2030B crossover
    xq0thrlijeqv.jpeg

    40-2030C crossover
    q4e7usj567yw.jpeg
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • skrol
    skrol Posts: 3,340
    edited September 2022
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    The pads seem to make the most difference with grills on. I guess this makes sense since there would be reflections off the grill that are apparently absorbed by the anti-diffraction pads.

    Bottom line, they are keepers on the Minimus 7. The best configuration is with the pads in place and the grills off. Which probably also makes sense.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • plastic_avatar
    plastic_avatar Posts: 690
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    Jeezus. VR3... I thought I'd do a $50 mod to my 7's next year, but now...

    How much was the total in new parts fir the pair?
    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 * Ye Olde college stereo in the garage
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  • VR3
    VR3 Posts: 28,052
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    I can't recall exactly but it was around 200ish total in parts. I sold the pair for 280 shipped. Further proof properly done mods add value!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • plastic_avatar
    plastic_avatar Posts: 690
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    "Further proof properly done mods add value!"

    Maybe I will Maximize my Minimus next year...
    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 * Ye Olde college stereo in the garage
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