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By CandyGang916
First post here at SSA. Looking for some help, I need to build an enclosure for my new sub and am looking for some help on a design. I can give up 34.5w X 20d X 15.5 OD max. I'm looking to get tuned to 32hz @ 2.5 cubes. I am going to be starting this build in the morning any help is greatly appreciated. I can't wait to hear this thing come to life. Just looking to get some help so I can visualize what I'm building. I will mess around with some numbers on Torres and try to post them up.
It will be going in a Toyota Corolla and running off a crescendo s1500.1 so 1500w. Mostly hip hop music is what I listen to.
Also, I work out of my car and have to use my trunk so I have to have my sub facing forward (into the car) to prevent the sub getting damaged. My current port is side firing but I would like to have this one facing forward. I'm open to any recommendations.
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By rmksledhead
Figured I should start a build log since I've gone through so much trial and error in getting this stereo to sound good.
I'm already done with most things but I did take pictures along the way so i'll get that all uploaded when i get photobucket or imgur figured out.
I bought my passat almost a year ago, the weekend after black Friday to be exact, and knew immediately that it needed some love in the bass department.
I had a rockford p-300-12 powered enclosure lying around that i once had mounted in a big self-propelled sprayer that i basically lived in for 3 summers, threw that in along with a rockford loc, rockford rca's, and some ebay 4ga cca to get it powered.
That sounded awesome for the average non-basshead and would suffice until i found a real solution....
Did some searching and found this great place! After searching and reading here for hours I decided on a Fi BL 12 for a sub and a BRZ1200.1 hifonics amp to power it since i'm a poor college student and can't afford a bc, aq or saz lol
I built a vented box for the BL that was 2.68ft^3 tuned to 28.5hz
After I finished the box I had to stuff foam above the headliner near the upper brake light and under the rear deck to stop some rattling. Installed some dampener (dynamat and ebay stuff) to the trunk lid, under the trunk carpet on the floor, and rear deck from inside the trunk. dampener helped a ton.
After the substage I realized that the stock front stage was not going to cut it... I knew that I wanted to fill some of the lacking upper bass frequencies with some volume so I was looking for the biggest components I could get for a decent price. Ended up getting the xr1800p components from Kenwood. They've got a big 7" woofer and an oversized 1 3/16" tweeter with external crossovers. currently the set is being powered by a dusty old pioneer 4-channel amp GM-x524. I'm not perfectly satisfied with the front stage for now since the amp likes to protect at high volumes and I've got some fuzzy distortion from the tweeters in certain frequencies. once i change the amp to the GM-d8604 class d 4-channel from pioneer I think it will get much better as I have the older GM-d9500f version in my s10 that never protects and has no distortion until extreme volume.
also ran another 4ga run of cca to the trunk and a distribution block when I added the second amp.
Also changed out the stock HU for a Pioneer Avh2600bt touchscreen unit which is fantastic for the money.
I decided that the box was tuned too low so I chopped 10.5" off the port giving me a 2.88ft^3 net volume tuned to 32.2hz and was much happier!
Now for the real reason I'm starting this build log.. I'm going to try a 6th order bandpass to keep this 'new to me' low end rumble and get back the awesome upper frequency volume from my mtx square sub in my s10 for when i want to blast the 50hz Flux Pavilion bass cannon!
Much more to follow, including pics for the above^ stuff!
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By rmksledhead
Well after a few months of owning my Bl 12 I've learned that I won't buy a mainstream sub for myself ever again! I also won't ever build a box that isn't as good or better than the one that I built for this beast either!
Its only seen a 1200w rms hifonics amp the time that I've owned it and I feel it could handle 2000w with proper crossover tuning. I ended up building a box which after bracing was really close to 2.45ft^3 and tuned to 30hz give or take a hertz(not sure if the port is "exactly" 2.5x12" and "exactly" 31.25" long). It gets much lower than the system in my s10 that is for sure!
Although I do love the way it sounds down low, I'm missing the volume i had in the upper frequencies(below 55hz). Its so much different that when I listen to rock I can hardly tell that I have a sub in the vehicle where in my s10 you feel every bass drum kick in your chest. I dont want to blame this on the sub since the enclosure is tuned so low and I still have the stock front stage and HU.
I'm in the process of installing some kenwood components (xr1800p) in the doors and powering them with an old pioneer amp i had lying around(gm x524) and I'm replacing the head unit with a AVH2600bt pioneer touchscreen.
I really hope that its the front stage making the biggest difference in the way the upper bass frequencies feel and that I'll love everything about the system in my passat better than the s10. I plan on updating this thread when Its all complete.
I also finally found a method of inputting parameters into Win ISD that works! I won't say that I regret getting the BL but after seeing how it and the Q compare I would get the Q next time around. Here is a comparison of 5 12" subs around the price of the Bl all modeled in my system on an SPL graph.
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By rmksledhead
A graph displaying SPL of 5 different woofers in a 2.5 cu ft box tuned to 30hz. All woofers had a 1200w signal applied.
Parameters are shown for each woofer in the simulation.
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