bailz Posted May 27, 2009 Share Posted May 27, 2009 guys, just wondering about how to connect twin subs, i have 7.1 90wx7 denon avr789 same as US 1908avr i think, anyway i got a large room i am just using the sub pre out for the 12 i have at the moment what do i have to do to connect another one, I want more rumble[]!!! Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted May 27, 2009 Share Posted May 27, 2009 Just get a y-splitter for your sub out from your receiver. Quote Link to comment Share on other sites More sharing options...
bailz Posted May 28, 2009 Author Share Posted May 28, 2009 its really that simple hey? will i loose any power using 2 subs if its coming out the same port on the amp? Quote Link to comment Share on other sites More sharing options...
Mr. RF62 Posted May 28, 2009 Share Posted May 28, 2009 Thats why there is a volume knob on the sub. In case you find it does, but in most cases it don't seem to. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted May 28, 2009 Share Posted May 28, 2009 its really that simple hey? will i loose any power using 2 subs if its coming out the same port on the amp? All you're doing is splitting the signal. The "power" comes from the built in amps on the subs. Quote Link to comment Share on other sites More sharing options...
bailz Posted May 28, 2009 Author Share Posted May 28, 2009 i see, thanks for your imput guys Quote Link to comment Share on other sites More sharing options...
bailz Posted May 28, 2009 Author Share Posted May 28, 2009 quick question, would i get more satisfaction with 1 better quality, more powerful sub than the 2 sub 12's, if so what one do you guys recomend? Quote Link to comment Share on other sites More sharing options...
Colin Posted May 28, 2009 Share Posted May 28, 2009 Harman white paper on subs: http://www.harman.com/about_harman/technology_leadership.aspx Two subs better than one “Intuition tells us that putting a large number of subwoofers at different locations in a room is likely to excite room modes in a more “balanced” manner, as compared to a single subwoofer.” http://www.harman.com/wp/pdf/multsubs.pdf “Configurations 6 and 10-12 show the best results. Subwoofers at each wall midpoint (#11) shows the lowest Std, Max-Min and Max- Ave. Subwoofers in all four corners (#10) is almost as good and shows a strong low frequency support. “ (The best position for four subs is mid point on the four walls or in the corners. Away from the side walls, but spaced equidistant on the front and backs walls is also good.) Conclusions “For practical number of subwoofers,there appears to be no obviouscorrelation. There is certainly nojustification for using more than four. Four subwoofers are enough to getthe best results of any configurationtried. Two subwoofers is very nearlyas good and has very good lowfrequency support as well. One subwoofer at each wall midpoint is the best in terms ofStd, Max-ave and Max-min but does not support lowfrequencies particularly well. Two subwoofers, at opposingwall midpoints, performs very nearly as well as four at themidpoints and gives a much better LF factor. Onesubwoofer in each corner also has good low frequencysupport, but does not perform quite as well as onesubwoofer at each wall midpoint, in terms of Std, Max-aveand Max-min. If cost and aesthetics are considered,subwoofers at 2 wall midpoints is preferred.” Quote Link to comment Share on other sites More sharing options...
bailz Posted May 29, 2009 Author Share Posted May 29, 2009 thanks heaps colin Quote Link to comment Share on other sites More sharing options...
fab5valentine Posted May 31, 2009 Share Posted May 31, 2009 The above is correct for evening out room responce with multiple subs, However co-location will provide an overall output gain as well. Quote Link to comment Share on other sites More sharing options...
m54 Posted June 11, 2009 Share Posted June 11, 2009 and.... in order to get additional 6 dB of output you have to keep doubling surface area (with double the power assuming the subs are the same model) 1 sub + 1 sub = 6 dB "up" (this is the most economical bang for the buck improvement.) 2 subs + 2 subs = 6 dB "up" 4 subs + 4 subs = 6 dB "up" This was the premise of the ProMedia SWS concept, which not everyone understood. Ultimately, the simple benefit of going from one sub to two is a large advantage gained... "Doesn't everybody have 16 subs??!!" ;-P 1 Quote Link to comment Share on other sites More sharing options...
bailz Posted June 22, 2009 Author Share Posted June 22, 2009 ok yeah, makes sence i just read a little more about that and yeah 6db up is right that good to know hey "Doesn't everybody have 16 subs??!!" not me[:|] i would think that might be too much rumble Quote Link to comment Share on other sites More sharing options...
Islander Posted June 23, 2009 Share Posted June 23, 2009 "Doesn't everybody have 16 subs??!!" Everybody other than TheEAR? He may actually have lost count of how many subs he has... Quote Link to comment Share on other sites More sharing options...
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