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EP500 Novice Question
#291254 02/08/10 03:24 PM
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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.

Re: EP500 Novice Question
SXDT #291257 02/08/10 03:47 PM
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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.


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Re: EP500 Novice Question
ClubNeon #291265 02/08/10 05:27 PM
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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
Re: EP500 Novice Question
obsi #291267 02/08/10 05:32 PM
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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
Re: EP500 Novice Question
ClubNeon #291306 02/08/10 07:56 PM
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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.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
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Re: EP500 Novice Question
SirQuack #291346 02/09/10 02:42 AM
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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
Re: EP500 Novice Question
obsi #291362 02/09/10 04:21 AM
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Axiom has a video on you tube showing the crawl. My 600 would have ruined my recliner. \:\)


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB SonyUBPX800


Re: EP500 Novice Question
SirQuack #291363 02/09/10 04:25 AM
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Your recliner can't hold 103 pounds Randy?


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Re: EP500 Novice Question
RickF #291383 02/09/10 12:26 PM
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 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
Re: EP500 Novice Question
obsi #291390 02/09/10 01:22 PM
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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
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB SonyUBPX800


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