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Re: Using Two Subs
JohnK #228343 11/04/08 04:09 PM
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 Originally Posted By: JohnK


An SPL meter is nice to have for seeing what sound levels that you're actually working with, but for simply calibrating speaker levels the built-in meter in the Yamaha and many other receivers does a fine job, so you might try that first, even as to the two sub calibration.


I hate to hijack this thread, but I'm receiving my second sub today , an EP500 to go along with my EP350. I don't have a SPL meter, but I do have EZset/EQ I can use on my HK 247.

My question is, how would I use that in a two sub calibration? Do I need to have both subs on and set to about 9 o'clock on both of the dials? Or does one need to be set a little more "hot" then the other before hitting the calibrate button?


2 = M60,4 = QS8's,1 = VP150,1 = EP350,1 = EP500
HK247
Optoma HD70,110" DIY screen
Xbox360 & PS3
Re: Using Two Subs
Ascension #228345 11/04/08 04:16 PM
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I think it will be a little difficult to get them both dialed in using an autosetup method. I calibrate each of my subs seperately with the other shut off with my Radio Shack meter, then turn them all on.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Using Two Subs
SirQuack #228346 11/04/08 04:48 PM
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If both subs were the same then I think the autocalibration would be close, as the 2 subs are different, it may have a hard time setting them. I would be shopping around for an SPL meter, they are not expensive and an indispensible tool for an HT enthusiast.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70
Re: Using Two Subs
jakewash #228351 11/04/08 04:54 PM
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Also, if the subs are near each other it would be better, but if you have them across the room from each other, I don't think it will calibrate well.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Using Two Subs
SirQuack #228371 11/04/08 05:54 PM
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Thanks for the advice, I'll go to ratshack and pick up a meter. Both of the subs will be located on my front wall about 10 ft from each other. Thank you for the help guys!


2 = M60,4 = QS8's,1 = VP150,1 = EP350,1 = EP500
HK247
Optoma HD70,110" DIY screen
Xbox360 & PS3
Re: Using Two Subs
Ascension #228387 11/04/08 07:12 PM
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Besides, an spl meter is a critical tool in the audiophile world. You can't be a jedi withouth the light sabre!

Your falling granny avatar kills me every time I see it. \:D Is that what the jedi call collateral dammage?


Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
Re: Using Two Subs
fredk #228388 11/04/08 07:17 PM
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Lol!! Thanks! There's another one I've seen where Obi-Wan is force pushing some goats. It's pretty hilarious!


2 = M60,4 = QS8's,1 = VP150,1 = EP350,1 = EP500
HK247
Optoma HD70,110" DIY screen
Xbox360 & PS3
Re: Using Two Subs
Ascension #228482 11/05/08 03:55 AM
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Sure, it's good to get the SPL meter, but even with different subs well-separated it's possible to auto-calibrate with one sub at a time working, then afterwards reduce each sub by 3dB on the receiver sub trim setting so that the overall balance will be the same with both working.


-----------------------------------

Enjoy the music, not the equipment.


Re: Using Two Subs
JohnK #230540 11/19/08 03:12 PM
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Ok, I did some rearranging in my basement on my subs (EP350 and EP500). I first put them two on the front wall under my projection screen.

I don't have a radio shack spl meter yet because the one here in my town don't have one. So I'm going to have to wait a little bit before I get one.

Anyways, it sounded to my ear good, but not spectacular, after doing numerous eq'ing with my HK ez setup. So I watched the video that Ian provided and decided to set both of my subs on adjacent side walls in my basement, like what Ian suggested. I did the automatic setup from my receiver to get the right db levels from all of my speakers then I manually set my crossover points to what sounds good to me. (80hz on center, surround and back surround. 60hz on my mains)It sounds 10 times better now.

Now onto my question. My EP500 was doing fine for a couple of weeks in it's new position. Then lately( it started last friday ), at certain frequencies, there will be a slight vibration coming from it. I put my ear up to the sub, but I can't tell if it's coming from the driver, or within the cabinet. I don't have any kids or any animals, so I don't think anything got into the port. Any help would be appreciated! Thank you!


2 = M60,4 = QS8's,1 = VP150,1 = EP350,1 = EP500
HK247
Optoma HD70,110" DIY screen
Xbox360 & PS3
Re: Using Two Subs
Ascension #230588 11/19/08 08:40 PM
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Ascension - first things first, you need to update your signature now that the 500 is in. \:\)

On the vibration, sometimes wires come loose inside near the driver. If they hang close to the woofer, they can vibrate when the woofer moves and cause sounds like you are hearing.

If it's bothering you enough that you feel like removing the woofer, it's fairly easy to check to see where the wires are hanging.

Jason


Epic 80-800: HG Cherry
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