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#291254 - 02/08/10 10:24 AM EP500 Novice Question
SXDT Offline
newbie

Registered: 02/08/10
Posts: 1
I am an EP500 user for my HT setup. I want to improve the bass in the room, currently the EP500 is sitting on carpet/pad which is over the concrete subfloor. Will raising it off the floor improve bass? Should I put a pad or spikes under it? My ignorance is showing, but if anyone has ideas that worked for them, I would appreciate it.

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#291257 - 02/08/10 10:47 AM Re: EP500 Novice Question [Re: SXDT]
ClubNeon Offline
connoisseur

Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
First, the biggest improvement will come from getting the position of the sub optimized left-to-right, and front-to-back. Try the sub-woofer crawl to help with that.

The EP500 has the cone a pretty good distance from the floor. That'll stop the biggest part of the boundary gain, which also happens when the sub is near walls. While putting the sub in a corner will seem to boost volume, it doesn't do so for every frequency equally, and can lead to boominess.

If you do want try raising the sub off the floor (remember the ideal positioning of a sub is in 3 dimensions, not just 2), you can try a SubDude or two. The ultimate is to place the sub on top of a bass trap, to not only defeat any boundary gain, but absorb the energy which builds up into the floor to ceiling room mode. ASC makes a SubTrap to do this, but it is a little expensive, and you'd need the 22" SubTrap to fit the EP500 on top. So I'd recommend starting with a SubDude, which is relatively inexpensive, to see if it offers any improvement.
_________________________
Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris

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#291265 - 02/08/10 12:27 PM Re: EP500 Novice Question [Re: ClubNeon]
obsi Offline
old hand

Registered: 11/14/09
Posts: 89
Loc: Philippines
Am considering nearfield rear positioned Ep500 on the 1 foot riser (corner) of the 2nd row of seats. anything i should stuff the riser portion that's directly under the ep500? thanks
_________________________
Velo DD18,2xAxiom EP500,2xeD A7-450,2xSVS PB13U,2xSVS SB13P,2xInfinity Kappa12mbm, 2xB&W PCS8

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#291267 - 02/08/10 12:32 PM Re: EP500 Novice Question [Re: obsi]
ClubNeon Offline
connoisseur

Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
If you can bore holes in the sides riser (still can be covered with cloth), you could fill it with mineral wool insulation, and built a DIY bass trap.
_________________________
Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris

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#291306 - 02/08/10 02:56 PM Re: EP500 Novice Question [Re: ClubNeon]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
I just filled my risers with insulation. SXDT, every room is different. Just raising the sub off the floor may/may not improve things. Sub frequencies will vary as you walk around the room, even in 1ft increments. Corner placement can give you the most output, but excite all the peaks/nodes in a room. If your room has openings into other areas of the house, often placing the sub near the corner furthest from those openings can help, but there is no quarantee.

As others have mentioned, the sub crawl might help. Basically, you place the sub in your seated location, or move the chair first. Then crawl around the room as while you play something with good low bass, then just swap positions.
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350
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#291346 - 02/08/10 09:42 PM Re: EP500 Novice Question [Re: SirQuack]
obsi Offline
old hand

Registered: 11/14/09
Posts: 89
Loc: Philippines
Thanks for the replies, I read the audioholics riser/bass trap article, interesting. Regarding the sub crawl, would it be of any benefit if I put the sub ON my listening chair then do the crawl? Also, should it be facing the front or back during the test? Cuz I noticed that if I squat or sit in my listening position, the bass changes a lot. I have my sub a fourth of my sidewall length from my front wall. Corner load gave very deep but boomy, muddy, slow bass.
_________________________
Velo DD18,2xAxiom EP500,2xeD A7-450,2xSVS PB13U,2xSVS SB13P,2xInfinity Kappa12mbm, 2xB&W PCS8

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#291362 - 02/08/10 11:21 PM Re: EP500 Novice Question [Re: obsi]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
Axiom has a video on you tube showing the crawl. My 600 would have ruined my recliner. \:\)
_________________________
M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350
Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB



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#291363 - 02/08/10 11:25 PM Re: EP500 Novice Question [Re: SirQuack]
RickF Offline
axiomite

Registered: 02/26/05
Posts: 5210
Loc: Vero Beach, Florida
Your recliner can't hold 103 pounds Randy?
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Rick
Our Room

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#291383 - 02/09/10 07:26 AM Re: EP500 Novice Question [Re: RickF]
obsi Offline
old hand

Registered: 11/14/09
Posts: 89
Loc: Philippines
 Originally Posted By: RickF
Your recliner can't hold 103 pounds Randy?


\:D
_________________________
Velo DD18,2xAxiom EP500,2xeD A7-450,2xSVS PB13U,2xSVS SB13P,2xInfinity Kappa12mbm, 2xB&W PCS8

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#291390 - 02/09/10 08:22 AM Re: EP500 Novice Question [Re: obsi]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
Yeah my entire family is 102lbs or less. \:\) Actually, it is more about the sub pucturing the leather or trying to figure out how to balance a 600 without it falling over...
_________________________
M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350
Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB



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