Hi, I am currently trying to find the best angle for fitting subwoofers in a 2+2 Zed rear. Given the shape of a Zed's rear cabin, I would like to ask opinions of what the best position and possibly the best angle for overall sound distribution of a Zed subwoofer. I have noticed that many subwoofer installs in a Zed cabin situate the sub facing directly upwards, sending sound into the glass window of the hatch. Is it the best place, so close to glass ? Is it more to do with the Sub-Box ? i.e... I am thinking this angled approach pictured below would be a better placement? A sub fitted in each corner.... The speakers I intend to fit are KFC-XW1300DVC 2000Watt Peakpower @ 1000wattRMS each. The next pic below shows my size and space taken if I were to install in the common Zed Sub location. I think the corner installation is best but would like to ask of other Zedders opinions for sound performance.
Meh i dont think it really matters man just put em where it fits, in a small hatch like ours its gonna be really freaking loud anyway. i had the alpine type x in mine a while back and just plonked it in the back facing backwards, that was just plain stupidly loud.
I am going to be doing as you suggest, but for me it's because I don't want to lose much boot space. I specifically got 8" subs for this reason.
I want to keep ready access for removing the spare wheel easily. I have thought about it and am attempting to utilise as much space as i can. I Have had to discard the false floor and have removed the trim to make a shape.
To determine as much area as possible for the boxes, I have attempted to layer the external dimensions. The interior fitting out will become 3 pieces. The pic below shows what i have found to be the best Subbox and speaker angle for sound whilst retaining bootspace and direct spare tyre access.
I have a booklet for the subs somewhere but cannot find it right now. It has the 2 different box sizes listed suitable. I wont be able to measure sq area until i have made the boxes. In any case with Subboxes area/volume, Does the shape of a box matter ? These boxes and the location will in no way be rectangular. Here is a quick google and paste... T/S parameters depicted in the Data Chart were used to perform computer box simulations. The KFC-XW1300DVC was designed for high SPL performance in small sealed boxes, so I set up LEAP 5 to simulate the woofers operation in a 0.55ft3 and a 1.0ft3 sealed enclosure, each with 50 percent fill material (fiberglass -- note that while fiberglass isn't necessary to damp high frequencies in the box, it does minimize the box Qtc for a given box volume). In the 0.55 cubic foot closed box, the KFC-XW1300DVC produced a low-frequency rolloff of 55.2Hz with a box Qtc of 0.83. The graph curves in Figure 3 show the SPL at 2.83V (blue curves) in half-space, at 2.83V in a small 154-cubic-foot car compartment (black curves), and at the SPL at a power level required to get maximum linear excursion (red curves). The 0.55-cubic-foot sealed box curves are solid lines and the 1-cubic-foot box curves are the dashed curves. Increasing the voltage input to the computer simulation to 56V pushed the woofer excursion to Xmax +15 percent and yielded a respectable 117dB. The larger 1ft3 box simulation had a lower 3dB down frequency of 47.0Hz with a lower box Qtc of 0.69. However, as is always the case, the larger the box the further the driver has to move, so it takes less voltage to achieve the Xmax +15 percent linear excursion maximum. The computer simulation required only 44V to reach a max linear SPL of 115dB, still loud enough to leave you deaf at age 60 if you rock hard for 30 years. Since these numbers are based on steady state (sine wave) analysis, the performance with program material will be at least 2-3dB greater before noticeable distortion. You should also keep in mind that low-frequency distortion is very hard for the human ear to detect. Distortion percentages as high as 15 percent generally are not really detectable except with measuring equipment. At high frequencies where your midrange and tweeters are working, it's an entirely different story.
You have to remember that the sub woofer is taking up a heap of space as well. The shape does not matter to much as long as it is one open space.
brock is right, u have to include the sub in the space taken inside the box otherwise ull blow it to bits thru heat and mech failure. Personally id either have a smaller sub sizewise but not power, and mount it magnet out if i were u and have it angled as u showed in one of the pics. Take it from someone that does it for a living, the idea is right, just dont try to limit ur space too much. if u need any help dimension wise pm me and ill get the boys together at work and ill work out a solution for best spacesave/performance whichever u want.
