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  1. #1

    Member Sales Rating: (19)

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    Sep 2003
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    Default Turning an Active Sub into a Passive One

    Is there any advantage to taking an existing active sub and making it passive? I am considering removing my plate amp and building a small MDF box to house it.

    The plate amps on active subs get hammered with tremendous vibrations which could affect the sound.

    The cost is negligible, but I'm just wondering if it is worth doing and the potential benefit to be achieved by doing it??? Any ideas?


    BTW, while my driver is in the shop, I also decided to remove the wheels and add a bottom plate similar to the SVS box subs. I've been reluctant to do this due to the weight of the sub (well over 100 lbs.) and the challenges associated with moving it.
    HT/2-channel Rig: Sony 50 LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."

  2. #2

    Member Sales Rating: (19)

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    Sep 2003
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    Default

    I doubt if it makes any audible difference at all, but I removed the plate amp from my sub and built a separate box to house it. I did it just for the helluvit. Looking forward to getting my driver back so I can test it out.

    Also finished working on the bottom plate. I will uninstall the wheels on Monday and prep the sub for installation. This includes drilling holes for the 3" screws and installing tee nuts.
    HT/2-channel Rig: Sony 50 LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."

  3. #3

    Member Sales Rating: (19)

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    Sep 2003
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    Default

    Got my driver back last week. It tested OK. Popped it back into the box and fired her up. Does the passive sub sound any different? Of course not. However, one day I'd love to experiment by powering the sub with a monoblock to see if there's an advantage to using a higher quality amp.
    HT/2-channel Rig: Sony 50 LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."

  4. #4

    Member Sales Rating: (17)

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    Jul 2001
    Location
    Northern Colorado
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    12,073

    Default

    Quote Originally Posted by Early B.
    one day I'd love to experiment by powering the sub with a monoblock to see if there's an advantage to using a higher quality amp.
    There are differences between different amps. Some are tight, some are sloppy, some seem to have a better bass quality than others.
    madmax
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D

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