Re: SPL Meter
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Joined: Oct 2008
Posts: 186
veteran
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OP
veteran
Joined: Oct 2008
Posts: 186 |
Yep know all about that did it with my old sub although it ended up back in the same place. This EP500 is a big bugger and I will be struggling just to get it to my seating position. My main concern will be fine tuning it once it's in it's new home.
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Re: SPL Meter
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Joined: Feb 2008
Posts: 50
buff
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buff
Joined: Feb 2008
Posts: 50 |
I've been wondering; if trying a sub crawl, does it matter which direction the sub is pointing?
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Re: SPL Meter
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Joined: Dec 2007
Posts: 7,786
axiomite
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axiomite
Joined: Dec 2007
Posts: 7,786 |
The direction the sub points can affect in room response. I get a better overall response with my sub firing forward in its current position compared to firing into the center of the room.
Fred
------- Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
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Re: SPL Meter
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Joined: Oct 2008
Posts: 186
veteran
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OP
veteran
Joined: Oct 2008
Posts: 186 |
The direction the sub points can affect in room response. I get a better overall response with my sub firing forward in its current position compared to firing into the center of the room. What is it's current position?
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Re: SPL Meter
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
For the most part the subs frequencies waves come out omnidirectional below 80hz or so, so in my opinion it does not matter much which way the driver is facing. Think of it this way, if you throw a pebble into a pond, watch the ripples expand out in all directions.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: SPL Meter
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Joined: Mar 2008
Posts: 1,378
connoisseur
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connoisseur
Joined: Mar 2008
Posts: 1,378 |
I could be wrong, but...
My understanding of sound is that all sound waves follow the "pebble in the pond" model, not just low frequencies. That is to say, they all emanate from a point, and travel spherically outward.
The difference is human ears. Human ears have trouble pinpointing sound generation points in the low frequency bands.
LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
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Re: SPL Meter
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
Graeme, you say you are not blown away and have set the sub up acorrding to the manual. Is the sub level matched to the speakers with pink noise playing? if so try adding a couple more db to the level for the sub, but the idea for the sub is to not be 'blown away' but it should just be filling in the lower end the speakers are not good at reproducing. You really shouldn't notice a sub is even on during music only during movies.
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: SPL Meter
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Joined: Dec 2007
Posts: 7,786
axiomite
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axiomite
Joined: Dec 2007
Posts: 7,786 |
Currently it is on the right side of the room on the wall facing towards the front of the room. By turning it 90 degrees (shoulda paid attention to that thread) I significantly reduced the 70Hz null and somewhat reduced my ginormous 50somethingHz peak. I can't say it was a night and day audible difference, but it was definately measurable.
Fred
------- Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
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Re: SPL Meter
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Joined: Feb 2008
Posts: 1,898
connoisseur
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connoisseur
Joined: Feb 2008
Posts: 1,898 |
Fred - agreed, the direction makes a difference due to the way the sound reflects when facing different directions in your room (think of a rock in the pond that the ripples bounce off -> move the rock, the reflections come back from a different direction). [Can everyone keep up with my ueber-scientific explantions?) With that said, I've never heard anything close to a night & day difference from changing the direction of the sub either, but when graphing the response of the sub facing forward versus sideways, there are differences. It's worth trying a different direction if you're trying to find the most linear response in a given position, but it is unlikely to cause a huge difference. Jason
Epic 80-800: HG Cherry
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Re: SPL Meter
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Keep in mind that any difference may not be due to the direction that the driver is pointing, as such, but that the distance of the cone from room boundaries will vary because of this and may be the variable that's significant.
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Enjoy the music, not the equipment.
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