Bass solutions in a BMW Z3 convertible
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New member Username: StreamArkansas Post Number: 1 Registered: Sep-04 | Okay guys, I need some help here. I have a 2001 BMW Z3 convertible. I want to migrate my old system from my Jeep Cherokee into the Z3. Here's what's in the Jeep: Alpine 9833 deck Two pairs of Focal 5 1/4 coaxial speakers Two Memphis Audio 10'' subs in a custom ported box Memphis Audio amp on the Focals - not sure of the wattage, but it's appropriate Memphis Audio 500w monoblock amp on the subs I love the deck, and I love the Focals - they're very crisp and clear. However, I'm growing really tired of the ported box sound - it's waaaay too boomy. With the ported box, you get more of the "slam" sensation of bass instead of the actual bass, which I don't like at all. I want tighter, clearer, and more responsive bass. So, I know I should go with a sealed bass enclosure for the Z3. But, it obviously has limited trunk room, so I'm in quite a pickle. Here's what I'm thinking so far. I either want to go with two 8'' sealed subs and hope they both fit, or one of those Bazooka type subs. The only problem with the Bazooka's is that they're ported, which will leave me with the boomy bass that I don't like. Do you guys have any other ideas or thoughts? Thanks in advance! -Jesse |
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Silver Member Username: SymplestilesStockton, CA Usa Post Number: 125 Registered: Aug-04 | exactly how much room is there for the box? |
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Bronze Member Username: Ne0nblakkDes Moines, Iowa USA Post Number: 29 Registered: Aug-04 | If you don't quite have enough room for suggested sealed box size, you could always get one a bit smaller and put in some polyfill. |
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Silver Member Username: Iamduff_87Michigan America! Post Number: 234 Registered: May-04 | if the ported box fits. a sealed box for those subs should fit no problem. ported boxes are usually anywhere from 1.5 - 2.5 x bigger than the req. sealed boxes. |
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seightgt05 Unregistered guest | IMO seeing that you have a Z3,(but that i mean $$$) look at JL and get one of those enclosures that a fit-to-car design they'd work good and give you that tight bass your looking for. PS i dont know if JL makes one of those for a Z3 but it's worth going to their website and looking i guess. |
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New member Username: StreamArkansas Post Number: 2 Registered: Sep-04 | Thanks for the help, everyone. I'll get some dimensions on the trunk later this evening. So basically, any kind of Bazooka (whether actual Bazooka's or another brand) sub is a bad idea, compared to sealed 8's? seightgt05, I checked JL's website, and they don't offer that for the Z3  -Jesse |
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New member Username: StreamArkansas Post Number: 3 Registered: Sep-04 | Okay, the trunk is about 25'' deep, but the part of that which would be useable for subs is only about 18'' deep, since the other 7'' is only about 7 or 8'' high (it's shaped funny). It's about 33'' wide. The useable part is about 16 or 17'' high. -Jesse |
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ThatGuyYouKnow Unregistered guest | sell the Z3 for an M3  more horsepower and trunk room my personal opinion |
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New member Username: StreamArkansas Post Number: 4 Registered: Sep-04 | Baaaah! Never! -Jesse |
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Silver Member Username: SymplestilesStockton, CA Usa Post Number: 127 Registered: Aug-04 | so you pretty much have..18 x 8 x 17 as far as dementions go right? i was wondering (and maybe you more experienced people out there can tell me if this will work) what about down firing the subs in your trunk? this would mean you have 8 inches for the depth of the sub (since the magnet would be facing the top of you trunk) i have no idea how this would sound, but you wouldnt be forced to purchase some 8" subs if you didnt want to. anyone out there have any experience with this method or know how it might sound? |
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Bronze Member Username: SixstarPost Number: 46 Registered: Aug-04 | Koda 8. 0.5 sqft each. Add some polyfill. Go here: http://www.adireaudio.com In the middle window, click "Koda 8 Midbass/Subwoofer Driver now available!", and scroll down to see box specs Image Dynamics ID8 v.3 like 0.45sqft max http://www.cardomain.com/item/IDSID8V3D4 Resonant Engineering RE8 like 0.217 sqft http://www.reaudio.com/flash_index.html All would be much better than the Bazookas. You have a really good deck and Comps in the front, keep it going in the trunk! |
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New member Username: BenjaminrbrownPost Number: 4 Registered: Sep-04 | Along the same lines of thought.... I have a 323 convertible that has a factory 8" sub mounted behind the middle of the back seat (where a shki passthrough could go in other cars)... no enclosure. When I switch out this sub, how important is it to have an enclosure. I seek quality of sound not loudness... my guess is that the enclosure is very important because I have not seen any without.... Thanks, Ben |
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New member Username: StreamArkansas Post Number: 9 Registered: Sep-04 | I read around and found people saying good things about those RE8's. Plus, that 0.217sqft box is nice ;) I could even have two of them at that size. Those RE8's are made to be in sealed boxes, right? Thanks! -Jesse |
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New member Username: StreamArkansas Post Number: 10 Registered: Sep-04 | I read around and found people saying good things about those RE8's. Plus, that 0.217sqft box is nice ;) I could even have two of them at that size. Thanks! -Jesse |
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Bronze Member Username: StreamArkansas Post Number: 12 Registered: Sep-04 | Yeah, I think I'll go down to my local car audio store and have them build me a custom box for 2 RE8's. Should they build one box and have separate chambers for each sub, or should I get two separate boxes? -Jesse |
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