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Turntable/subwoofer blues

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Jim Pittsburgh:
I hope the sorbene works, but from my own investigation, have found that the most effective remedy was to build a sandbox.  Sorbene feet can work/ help, but only on tt with a fairly even weight distribution.  If the feet are too squished or not squished enough they become ineffective.

EmperorNorton:
And all the boxes are unpacked?  I'm looking forward to hearing some prime Mcintosh gear,

 and I'm frequently in your general neighborhood.....

Hint, hint.....

MacGeek:
And all the boxes are unpacked?  I'm looking forward to hearing some prime Mcintosh gear,

 and I'm frequently in your general neighborhood....

The boxes are mostly unpacked and the gear operational.  I have some tweaking to do, especially taming a significant plateau between 31 and 50 hz, but that's part of the fun and preferred over remodelling.

Stop in almost anytime.

rikshot:
Try choking off  !/2 of your bass reflex port to change "mechanics" of the bass----Sorbothane is "dense" & is for heavy shock---Try mattress foam, styrofoam or "beach" sand which is rounded grains (not crushed sand that compacts)---dust cover is a reverberation chamber, & if it's bass radiation---turn your sub a little left or right off center---I've never been able to operate a turntable if a speaker is pointed at it---especially if you're tracking under a gram---& the cover causes reverberation----You really need physical separation---or a radiation shield----like a piece of whatever you got---like piece of plywood---or cookie sheet-L-OLOL

MacGeek:
Try choking off  !/2 of your bass reflex port to change "mechanics" of the bass----Sorbothane is "dense" & is for heavy shock---Try mattress foam, styrofoam or "beach" sand which is rounded grains (not crushed sand that compacts)---dust cover is a reverberation chamber, & if it's bass radiation---turn your sub a little left or right off center---I've never been able to operate a turntable if a speaker is pointed at it---especially if you're tracking under a gram---& the cover causes reverberation----You really need physical separation---or a radiation shield----like a piece of whatever you got---like piece of plywood---or cookie sheet-L-OLOL

Thanks for the tips. Things are mostly under control.  No separate sub to deal with; the speakers are full range.  The turntable is on a wall mounted shelf.  I always play it with the cover up (although it doesn't matter when streaming).  I have tried the speaker ports open and plugged and use them whichever way is better.  I measure the room and use 1/3 octave eq to smooth frequency response.

Through all of my moves I have found it usually takes about three iterations of tweaking to get things where I like them; I have a couple to go (tweak, listen, tweak, listen, etc.)  After that, then I leave things alone. 

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