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I was thinking of attempting a build using a Fi IB318 v2 in Infinite Baffle being 5hz-45 and two skar SDR-8s in separate IB being 45-200hz (The rest of the system would be four 6.25's and two 1.5's). Is it possible to phase in any way to achieve a solid sounding slope from 40-60hz with this setup? I really want this 18, but I don't want to give up so much room from 40-60hz with only 6.25s. For a little context it would be a 2001 solara with the 18 (baffle to trunk) where the rear seats are and the 8s on the rear interior panels.
Hey there guys and girls. Im in Sydney Australia. I have a small SUV , a Mitsubishi ASX and done some extensive work in the boot area. Sound deadened the whole area after removing the space saver tyre, trunk lid, side rear panels, made a false floor with some 4x2 timber screwed to the original screw thread points. Liquid nails was applied to additional 4x2 timber to raise the height to accommodate the spare wheel. Additional 2 x 2 inch timber was used to make a frame around the 3/4 inch marine ply which had hinges installed to access the spare wheel. A H frame was added to mount the amplifiers on either side and the top baffle was used to mount the subwoofers firing towards the rear windshield glass. Cardboard was used to create a template to seal the side curved plastic areas and then 5mm mdf was used to cut the shape. The cut outs was then sealed with wadding (dacron) with staples and then I use black automotive carpet to cover the waddings. The cut out on either side was then screwed to the H wood panels. The main wood baffle which originally housed a pair of Rockford Fostgate P215S4 Subwoofers where removed. This top baffle also had wadding around the edges facing the rear so it created a good seal in the boot area.
To install the Boston subwoofers I used a 1/2 inch MDF since I original board was 3/4 inch marine plywood. and screwed the board securely to the to baffle. Before the board was screwed in, I sprayed it with kwick glue and applied black automotive carpet to it. The raised curved baffle created a good impression with the two Boston Acoustics subwoofers. I checked the Bostons FS of 31Hz and the QTS of 0.57 may work for me. I understood from the Boston's speaker manual, they take 1 cu feet sealed boxes but with this specs, I thought I give them a run as they were laying in my garage for a while.
I am running them with a Phoenix gold RX1100.1 amplifier and they are single 4 ohm voice coils. I am feeding them 444rms per woofer and man, this subwoofers POUND!!!!. The minute I powered them up, I noticed the snap bass response which hit hard and was detailed. The Rockford's did not perform the same way being larger subwoofers. I also have a pair of Soundstream old school Rubicon 12's that I may also try out but so far the Boston's are keeping me very impressed. My boot area is specified as 14.9 cubic feet, its not too big but I thought it was still small for a pair of 15 inch subwoofers. So far I am really impressed with these gorgeous subwoofers that many SQ fanatics around the world have heard good reputation for this awesome subwoofer. I do wish that Boston goes back to car audio gear but wishful thinking My other audio gear is a Precision Power PC450 amplifier running Boston Pro 6.4fs, and a pair of Rockford co ax in the rear. I have put pictures of my old system with the Rockford Fosgate subwoofers just to provide an impression. I will add the new pics soon!
Anyway, please feel free to comment
Hey, I got my XS D3100 yesterday and am about to start on my box.
I have a 1986 Pontiac Fiero. It was my first car and I love it, but has been difficult to put subs in. I recently removed the dash, AC, spare tire, jack, and heater. The front trunk is now empty except for the brake cylinder that I cannot remove/relocate. I'll post pictures in a few minutes.
There is a large hole between the front trunk and cabin area. I was considering a few different options:
1. Make a ported box. This would be extremely difficult and time consuming because the space is odly shaped. I would also have to use an external aeroport.
2. Put a baffel where the dash was, leaving the back open to the trunk. This would be the easiest option and I have heard a lot about the sound quality of IB.
3. I think this is a new idea, so I'm not sure it would work... Make an infinite baffel setup and port it with 6" PVC. I could change the length of the pipe inside the trunk and add elbow joints. If I went this way, i would buy a car kit of Q-mat and sound deaden the trunk.
For this build I'll be using my Sundown X-10 powered by my Visonik v4000xd (same board as MA HK4000D). I will be upgrading to two Z4 12's or Ermagerd 12's in about a month or so. I'd really not like to build another box for them.
If you have any IB experience or thoughts on my options, I'd appreciate your help. Thanks!