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Post by Nemesis.ie on Feb 19, 2010 16:21:55 GMT -5
(I was about to have to start mentioning leprechauns!)
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Animo
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Post by Animo on Feb 19, 2010 17:33:23 GMT -5
Well, I had a similar conversation with the guys at eD, because I am toying with the idea of a second A7s-650 build, sometime in the future. Brett told me that just putting a second sub in the room would yield me +3dB, but, if I placed them together (or stacked as some like to say) it would then yield +6dB.
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ntrain42
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Post by ntrain42 on Feb 19, 2010 18:11:13 GMT -5
Well, I had a similar conversation with the guys at eD, because I am toying with the idea of a second A7s-650 build, sometime in the future. Brett told me that just putting a second sub in the room would yield me +3dB, but, if I placed them together (or stacked as some like to say) it would then yield +6dB. You would actually have to double up your drivers and power to gain 6db. Doubling your drivers while using your current amp to power all 4 drivers will gain you 3db.
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Animo
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Post by Animo on Feb 20, 2010 0:33:19 GMT -5
Well, I had a similar conversation with the guys at eD, because I am toying with the idea of a second A7s-650 build, sometime in the future. Brett told me that just putting a second sub in the room would yield me +3dB, but, if I placed them together (or stacked as some like to say) it would then yield +6dB. You would actually have to double up your drivers and power to gain 6db. Doubling your drivers while using your current amp to power all 4 drivers will gain you 3db. That is exactly what I would be doing. Had no plans to daisy chain a slave off my existing sub.
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ntrain42
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Post by ntrain42 on Feb 20, 2010 11:03:14 GMT -5
You would actually have to double up your drivers and power to gain 6db. Doubling your drivers while using your current amp to power all 4 drivers will gain you 3db. That is exactly what I would be doing. Had no plans to daisy chain a slave off my existing sub. No prob..........unless you just don't want to decontruct your current sub, Id still recomend the eD 5.12 12" subs...........the 5.12 eD are about 3db more sensitive, require less than half the power to drive them,run in a smaller sealed box, and can even be run in an IB design(Like if your going to use the closet.). I still think you should sell off your "13" inch drivers and just pick up 4 of em, and run em all off one amp. More cost effective,more efficient, with more design flexibility on top........doing some type of large sealed(And it wouldn't even be that large at only 4-5 cubes) down firing box with 4 of those would be sick for total output and they would be a step up in musicality too.
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Animo
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Post by Animo on Feb 20, 2010 22:09:19 GMT -5
That is exactly what I would be doing. Had no plans to daisy chain a slave off my existing sub. No prob..........unless you just don't want to decontruct your current sub, Id still recomend the eD 5.12 12" subs...........the 5.12 eD are about 3db more sensitive, require less than half the power to drive them,run in a smaller sealed box, and can even be run in an IB design(Like if your going to use the closet.). I still think you should sell off your "13" inch drivers and just pick up 4 of em, and run em all off one amp. More cost effective,more efficient, with more design flexibility on top........doing some type of large sealed(And it wouldn't even be that large at only 4-5 cubes) down firing box with 4 of those would be sick for total output and they would be a step up in musicality too. Discussed this proposal with Brett. He asked me if I was serious. When I asked him why, his answer was that if this arrangement was more efficient, they would be building it. Just because a specific driver may be +3dB more efficient than another, the math, design, and cubes need to be taken into account completely before a total comparison can be made. He assured me that what I have is far more efficient than your proposal, and far more efficient than some of the subs that have been tossed about these forums lately. I appreciate your opinions, but stop trying to make me feel like I built something inferior. I am quite pleased with what I have, as are the dozens of other people that have the same sub as myself. I had also spent a lot of time researching and listening to different subs, before I made my decision. It didn't just happen overnight. And those that I associate with are well qualified in the principles of audio design. For the record, here are subs we built from scratch for a friend's dedicated 2 channel system. Those are 18" drivers for reference. The reason I built eDs for myself is because I couldn't afford to build the subs below, nor have the available real estate to place them in my room. They are quite large!!
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Post by Deleted on Feb 21, 2010 10:23:28 GMT -5
Damn, those must be massive!
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ntrain42
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Post by ntrain42 on Feb 21, 2010 10:49:37 GMT -5
No prob..........unless you just don't want to decontruct your current sub, Id still recomend the eD 5.12 12" subs...........the 5.12 eD are about 3db more sensitive, require less than half the power to drive them,run in a smaller sealed box, and can even be run in an IB design(Like if your going to use the closet.). I still think you should sell off your "13" inch drivers and just pick up 4 of em, and run em all off one amp. More cost effective,more efficient, with more design flexibility on top........doing some type of large sealed(And it wouldn't even be that large at only 4-5 cubes) down firing box with 4 of those would be sick for total output and they would be a step up in musicality too. Discussed this proposal with Brett. He asked me if I was serious. When I asked him why, his answer was that if this arrangement was more efficient, they would be building it. Just because a specific driver may be +3dB more efficient than another, the math, design, and cubes need to be taken into account completely before a total comparison can be made. He assured me that what I have is far more efficient than your proposal, and far more efficient than some of the subs that have been tossed about these forums lately. I appreciate your opinions, but stop trying to make me feel like I built something inferior. I am quite pleased with what I have, as are the dozens of other people that have the same sub as myself. I had also spent a lot of time researching and listening to different subs, before I made my decision. It didn't just happen overnight. And those that I associate with are well qualified in the principles of audio design. For the record, here are subs we built from scratch for a friend's dedicated 2 channel system. Those are 18" drivers for reference. The reason I built eDs for myself is because I couldn't afford to build the subs below, nor have the available real estate to place them in my room. They are quite large!! Well, unless the posted specs eD gives for their subs is wrong and way off, it would clearly back the fact up that the eD5.12's have a number of advantages over those 13's that I stated previously using half the power.
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Post by Nemesis.ie on Feb 21, 2010 11:22:36 GMT -5
They look like someone took washing machines and replaced the drums with drivers. Edit: There might be a market for kitchen units that you an pop in unused "standard appliance spaces" paint them white with white-anodised alu drivers and you might have a winner. Pop in a disc and drown out the noise if the other appliances.
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Animo
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Post by Animo on Feb 23, 2010 17:49:58 GMT -5
Well, unless the posted specs eD gives for their subs is wrong and way off, it would clearly back the fact up that the eD5.12's have a number of advantages over those 13's that I stated previously using half the power. Nothing wrong with the specs. I was simply told that the eD5.12s were of a lesser design than the 13Av.2s in my sub, different motor structures, different magnet weights, different voice coils, different cone material, and of course, far less excursion. Also, don't forget that my 1300 watt amp is there to deliver all that extra power for those frequencies below 20Hz which is where the power is needed and the extra headroom for those occasional explosions!!!
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ntrain42
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Post by ntrain42 on Feb 23, 2010 18:14:21 GMT -5
Well, unless the posted specs eD gives for their subs is wrong and way off, it would clearly back the fact up that the eD5.12's have a number of advantages over those 13's that I stated previously using half the power. Nothing wrong with the specs. I was simply told that the eD5.12s were of a lesser design than the 13Av.2s in my sub, different motor structures, different magnet weights, different voice coils, different cone material, and of course, far less excursion. Also, don't forget that my 1300 watt amp is there to deliver all that extra power for those frequencies below 20Hz which is where the power is needed and the extra headroom for those occasional explosions!!! Your right, different motor structure, magnet size etc, but the xmax of the 13.2 is only about 4mm greater than the 5.12 AND the 5.12 has a slighly lower Fz at 21hz. You need a significantly larger motor structure just to gain a small amount more of linear Xmax, but the Fz suffers slightly(and the 13.2 would need a heavier cone than it already has to drop the Fz to a lower value, lowering efficiency even more). Tellin ya, those 5.12's are the sleepers of eD's driver lineup. Not as sexy looking as the 13.2's but I feel the performance is a tick better, especially for $100 less per driver. Bang for the buck. Get 4 for the price of 3 retail, and only need one single 1300watt(actually its 900 watts at .1% distortion)to drive them properly. Again, not discounting what you have, I'm just looking at a bigger picture.
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Animo
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Post by Animo on Feb 23, 2010 20:01:26 GMT -5
A bigger picture? This sub is already too damn big to fit in a picture.
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Post by Nemesis.ie on Feb 24, 2010 10:35:31 GMT -5
Hmm, my picture is 115" is it still too big to fit? <confused>
<G>
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ntrain42
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Post by ntrain42 on Feb 24, 2010 10:42:15 GMT -5
A bigger picture? This sub is already too damn big to fit in a picture. Hehe, yeah, I know they are, or at least the rear end of em.....
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Animo
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Post by Animo on Feb 26, 2010 21:44:35 GMT -5
I expect a sub to fire rockets and torpedoes..... This is the next sub I am going to put in my room.....
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Post by saginawjuggalo on Feb 28, 2010 13:24:00 GMT -5
I'll keep this simple and only answer the header.
Musically accurate, linear, great extension with plenty tactical feel and power.
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Post by Nemesis.ie on Mar 8, 2010 7:02:39 GMT -5
I expect a sub to fire rockets and torpedoes..... This is the next sub I am going to put in my room..... Was this for real? That's only about $60 in today's money (I am assuming it was from the 50s)? Or was it a sort of fake - made of paper board and designed to just be sat in, not put in the water?
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bootman
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Post by bootman on Mar 8, 2010 7:43:48 GMT -5
What do you expect from a Sub in your home theater? The reason I ask is my A3-300 sub right now just doesn't do it for me during movies. When I turn the gain up on the sub and for music it gives me the sound I desire. But only with music. At lower levels while watching movies I can leave the sub turned up and get what I want out of it to a degree. I had a listen to the tiny Definative Technology Supercube II. ! Now that gives me the bass I am looking for in a movie. Is it so much to ask that my sub hit me in the chest and make certain scenes in a movie make me jump and shake walls of my house? Yes I have it in the optimum position. I have tries just about everything and the A3-300 just doesn't cut it during movies. Maybe for others but not for me. I have a 2.1 channel setup that I use mainly for tv, movies, and music. Back on topic..... Either get another A3-300 or sell it and get a better sub. Look at some tests here. www.hometheatershack.com/forums/subwoofer-tests-archived/6015-index-subwoofer-tests-manufacturer-model.htmlLook at freq response that goes below 20hz for HT.
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ntrain42
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Post by ntrain42 on Mar 8, 2010 10:40:23 GMT -5
Better off getting another A3.............2 together will give you a full 6db more output and lower your in room frequency extension around 5-10hz. That is significant.
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Animo
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Post by Animo on Mar 8, 2010 18:31:32 GMT -5
Better off getting another A3.............2 together will give you a full 6db more output and lower your in room frequency extension around 5-10hz. That is significant. Agreed!!
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