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Joe Buck
Dodge Dakota
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2/01/2002
15:41:53
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 Subject: RE: Bandpass or sealed?
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I have four, 1000watt Pioneer premier competition 12's and two 1400watt Legacy amplifiers, all in custom fit indivual (sealed) boxes. I could ask for nothing more. I prefer the sound of sealed boxes, and almost made the mistake of getting a banpass box for each. thank goodness I didn't.
If anyone has any good tips for my system give me some feedback Buckshorty@hotmail.com
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Weasel
Dodge Dakota
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9/25/2002
22:02:49
|  RE: Bandpass or sealed?
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I have the ABP12 Bandpass from Audiobahn, im running a 1600watt BOSS Chaos Series Amp to them and they are extremely loud. i can put 400 to each sub, and they do not top out and last time i tested them in a friends car ( 1998 Honda Accord EX) I hit 157db with the box. Ported boxes do create a huffing noiuse when played to loud, this noise is what occurs when your subs are distorting, you dont hear the distortion because the reflex inside the plexi viewable chamber is canceling it out. I worked for a local Car audio shop and we seen this problem all the time. if you want to reduce the huffing sound, get "Whale" ports, they are huge and will increase your boxes performance. As for Sealed boxes, they work best in trucks. A sealed box creates a deep bass resonance and produces large volumes of Thump. If you want to feel the punch from your woofers in your chest, sealed is the way to go. If you want people to hear you in theory 3 blocks away, then a bandpass will create the booming effect that they will hear. My advice to most of you is to goto Radioshack and get a book on car audio and subwoofers. Everyone seems to have their own opinion on what does what, but from my 5 years of experience in working with subwoofers in bandpasses and sealed inclosures, this is my opinion. Hope this helps Mark- -Weasel
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92Dak
Dodge Dakota
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9/25/2002
22:29:42
| RE: Bandpass or sealed?
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No, you did not hit 157 DB with that setup. Even if you put it in the port. I doubt your amp can even put 400 watts to BOTH subs.
The distortion is not cancelled out. Bandpass boxes just make it less audible. This is the reason why many people overpower subwoofers. Once you hear the distortion in Bandpass boxes, it is too late.
Just getting bigger ports does not increase your boxes performance. Boxes have a thing called tuning frequency. You don't just put bigger ports without calculating the tuning frequency. Huffing is caused by too small of diameter ports. If you put bigger ports, you must also increase the length to maintain the same tune.
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Weasel
Dodge Dakota
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9/26/2002
00:39:06
| RE: Bandpass or sealed?
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Go look at the specs for that amp. And yes i did hit that high. I modified the ports and tuned them as well. It is possible i HAVE done it, and it is recorded by IASCA. So please do not try and tell me what i have, and havent done. Fortunately over the years people have developed their own ways of making things work differently then what they did before. This is yet another one of those post areas, where there is nothing but argues. Therefore, im through with it. Keep your opinions to yourself, im not looking for someone to criticize my post. I know what ive done, and what works. You plain people, look at car audio as, it cant do more than what the manufacturers say. Unfortunately thats wrong, take computers for example, overclocking of CPU's , they werent designed to be OC'd but they are and they work, same principal in car audio. There is always a way to make something work better. Im outta here. later idiots.
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madmaxin22
Dodge Dakota
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9/26/2002
09:55:32
| RE: Bandpass or sealed?
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calm down weasel, remember this is a public forum and whatever you write about, whether its true or not, anyone else has the right to criticize to some extent. I too doubt you hit 157 legal. maybe outlaw w/ the doors open and the mic above the box. audiobahn arent known for being killer spl subs. there are ppl w/ strokers w/ a great setup that can only hit in the 155-158 area(legal of course)and by calling everyone idiots, your BOGUS score will just be criticized more.
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madmaxin22
Dodge Dakota
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9/26/2002
10:03:06
| RE: Bandpass or sealed?
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by the way weasel, i too have had a BP box in my beginner days and you are right, they tend to have a boomy effect that makes ppl think you actually have bigger/better subs. i had 2 12" pioneers in a bp for my first setup and it thumped. but as far as hitting in the chest and being heard far away. my 2 15's sealed crush your chest and can be heard from a LONG LONG ways away(alot more than 3 blocks). not to mention i have set off three car alarms in the last week and i wasnt even playin em loud. and i am only hitting 145-150 legal. and your nice BOSS amp might put out 500 rms if your lucky
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BIGTYMER
Dodge Dakota
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9/26/2002
10:20:19
| RE: Bandpass or sealed?
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Joe, lose the legacy amps. They are a joke. You might be getting 400 watts with each one but even that might be pushing it.
Weasel, I aslo doubt that 157 with that setup. Outlaw, possibly... Port wars, yes, but then that isn't loud. That boss amp isn't one of the good ones. In fact they only have one good one. It's the REV3000D and although it does put out a good 1250 watts they rate it at 3000. So your 1600 watt probably does 700-800. That "huffing" sound is port noise as stated. Bottoming out will make a pop or clack sound. If you don't know enough to run a better amp and are playing with the tuning on a prefab bandpass box you probably don't know what your doing and should have left it alone. I know a bit about doing ports. The port in my old wall was 560 sq inches and tuned the box to 72 hz. Peaked at 76 and sounded like 100 8's playing a kick drum. It was stupid loud. And before you go flaming about it, that was a db drag setup. For daily listening I had another port that slipped inside that one.
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madmaxin22
Dodge Dakota
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9/30/2002
19:12:58
| RE: Bandpass or sealed?
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ya right, 157 w/ this????
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1385275076
hahahaha
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markm
Dodge Dakota
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10/01/2002
00:20:11
| RE: Bandpass or sealed?
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i just had my system tested and it hit 140db. i was having trouble with my alternater at the time it was stock and on its last leg. now i have a 120 amp bad johnnie. do you guys think that that will make any differance in my sound. it made a big differance in the power of the vehicle. i have traded my dakota for a ramcharger the differande in space made a hell of a diffenance in sound. i like it a lot better.
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92Dak
Dodge Dakota
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10/01/2002
23:10:23
| RE: Bandpass or sealed?
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We are not a forum that argues all the time. It's just that 157db is really hard to believe. I mean, I might would trust you, but you talk about porting boxes creating huffing noises when they are distorting. That's not true.
In addition, you tell us to look at the specs for the amp like this is suppose to prove something. I know that after 5 years in car audio, you would realize that BOSS's are overrated. I will say that out of all the really crappy brands, BOSS is not bad. Like BIGTYMERS said, the 3000 will give you a good 1200-1300 watts for $220. But still, thats barely over 1/3 of the rated output.
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Joe E.
Dodge Dakota
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10/02/2002
16:45:37
| RE: Bandpass or sealed?
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Hi guys. Dont jump on me here, Im not a real wiz on this sub stuff. I dont have much expierence with it. I simply need some suggestions on future plans. I have a 1990 Dak CC. I have a sony explod CDX-M630. My amp is a MTX Thunder 2150X. I use a wiring kit with large wires to run big power. ( 4 gauge) I also use a bandpass dual 12s inclosure with 2 12 in subs. Right now cheep Pioneers at 450 W max or something like that. I am looking to get into better quality sound and need advice on speakers and possibly a new box. Thanks.
Oh I also need a new alternator cuz my system drains my truck bad. And info on a compasitor would be nice. Im tired of my headlights dimming onme. Thanks
Joe E.
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MnMeLiTe
Dodge Dakota
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10/03/2002
00:37:22
| RE: Bandpass or sealed?
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Hey whats up guys. I'm just curious.. Everyone asks if you want that heart pounding bass sound, or that loud @ss hear you from 3 blocks away sound. Is there anyway to accomplish both? I mean does more necessarily mean better. Meaning the more subs I get does that mean the more bass and the louder it is? I've got a 2000 CC R/T with 2 10" kicker solo-barics with a 1000W kicker amp wired to the speakers, subs, and tweets, and then a 800W amp wired to a t.v. and some other stuff. It sounds fine, but I'm planning on taking out the back seat and putting in 4 12's and then maybe putting a 10" in the center console, and some 8"s in the doors and then adding a couple more speakers. Will I be able to accomplish that heart pounded bass and at the same time be able to hear words, and at the same time be heard from 3 blocks away? Any input would be appreciated. Some advise, tips, tricks, criticism would be cool too. Just don't be @sses.
Thanks in advance
Mike
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madmaxin22
Dodge Dakota
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10/03/2002
10:17:41
| RE: Bandpass or sealed?
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more subs does not mean anything,,, unless of course they are decent to good subs and in a quality install w/ other quality stuff. i have heard so many systems, one dude had 2 vega 12's and he thought they rocked. he was lucky if he was hitting 120. they were in a sh1tty prefab ported box w/ an oldschool amp. now if he would have had a decent box w/ a better amp it would have sounded BETTER but not great. If you do 4 12's, and give them enough power and room, and they arent crap subs, then that should put you into the 140's at least. heart pounding bass and being heard from blocks away go hand in hand but are also different. i can hear cars drive by my apartment w/ some bass and when they are right in front you can tell its super sh1tty and they prob are running crap. when i drive by my buddies, they know its me, cuz no one else in town (maybe one other dude) has as good a system and loud as mine. not even blasting mine rattles all their windows in their apartments. and when ppl ride w/ me some cant believe how loud it is and they say they can feel it in their chests. I have been in audio for a while and you will find you get used to the bass, thats why everyone gets more and bigger subs. i know my truck gets loud, but to me it isnt chest blasting bass but some it is, it all depends on the person. usually 150-155 or more is when you really feel it in your chest. and alot matters with the freq. of the bass notes, some will be felt more than they are heard. anyways if you do 4 good 12's then you really dont need the 10's or 8's, just some good components to keep up, unless you want to be able to say i have 4 12's, 2 8's and 2 10's. another thing is i doubt your stock alt can support all of those along w/ your highs.
and why does everyone keep posting "dont jump on me" "dont be asses"
one guy was being azz about his setup (cough cough weasel) we called BS and explained why and he disappeared. i wont criticize anyone in audio unless
A. they are running pyramid and jensen subs and think they are god
B. they lie about #'s and you know it
hope this helps bro
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Joe E.
Dodge Dakota
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10/03/2002
17:27:40
| RE: Bandpass or sealed?
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Hey man, thanks for the info in your last post. But I still have a question. I posted a few above you yesterday. Its says what i am starting with. I am looking for a setup that has good bass with a variety of frequency ranges. I am sick of subs hitting hard at one freq., but choaking at another. But I also dont want the brain busting bass that messes with you throat. I just like a good sound, not loud noise. Thanks.
Joe E.
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madmaxin22
Dodge Dakota
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10/03/2002
19:34:47
| RE: Bandpass or sealed?
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well first, i dont know why anyone else isnt chiming in w/ help. but here goes.
if you are looking for a new setup completely, get different amps. stay away from low end gear like legacy,jensen,pyramid, and many more. they are good for a first system. PSSSt, i had a jensen amp myself in my first setup. since you dont want loud bass, i would suggest 2 10's or 12's in a sealed box. sealed boxes hit all of the frequencies and can usually sound good at all of the notes.
for an amp i would suggest a jbl BP series. great power, for decent price but there are plenty of great amps out there
for subs, esp. if you want SQ and not SPL, i would suggest either JL 10w3's or 12w3's. or you could go with the Adire Brahma series. Great SQ but they can get hella loud too. they are more expensive. I have 2 JL 15w3's and they have great sound quality at all the notes and get mad loud also. so if you dont want loud, 2 12's would be sufficient. My first system was 2 12 pioneers IMPP's in a bandpass box, and on certain notes it was loud but had no SQ at all. one out of every 20 songs sounded good. now pretty much everything from rock to rap to country sounds good. anyways if you got any more ?'s just email me. madmaxin22@HOTMAIL.COM
hope this helps
later
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madmaxin22
Dodge Dakota
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10/03/2002
19:38:23
| RE: Bandpass or sealed?
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sorry joe E. i read the joe buck post and thought it was yours. either way, i dont know what ratings that amp has but everything else can apply to you. i have no experience w/ caps and have the same opinion of many car audio enthusiasts. they arent that great. if you want more power and to solve your dimming, look into a bigger alt online, can prob. get one for 200-250 and be able to have another amp or two to run highs and mids.
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Joe E.
Dodge Dakota
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10/04/2002
09:14:10
| RE: Bandpass or sealed?
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Thanks for the info and advice Madmaxin. I know what you mean about the pioneers sounding good on some songs but crapy on others. Nelly is always a good bet for my subs. Korn also as a few good beats on my subs. I listen to everything so I like diversity. Im gonna look into JBLs maybe 2 10 or 12s. In a sealed box.
I though it was funny you were telling me not to buy Pyramid or pile or jensen. They have sh!t for products. My Pioneers subs were a temporary fix. I had spent over a grand on this sound totally pulling out all stock stereo things and replacing them with sony and mtx. However, thanks for the info and Ill look into those Amp ratings and relay the message. Maybe then you could tell me if it has enough power to run 2 JBLs. Thanks again man. Have a nice day. Hellow weekend!
Joe E.
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shane b
Dodge Dakota
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10/19/2002
10:16:43
| RE: Bandpass or sealed?
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i got two kicker solo-baric L7 subs in a custome made box with 2 4" ports and should i get 2 more ports will it sound better
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Wayne
Dodge Dakota
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10/21/2002
12:56:08
| RE: Bandpass or sealed?
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I have a question regarding sealed boxes. Is it alright to have the subwoofer facing up, or is it best to have it on its side? I have 2 ma audio 12" 1000 watt each. and is powered by 2 mobile authority 1200A 2channel amplifier.
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Cali_Daddy30
Dodge Dakota
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11/05/2002
01:03:07
| RE: Bandpass or sealed?
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I have a question for you guys. I have 2-12 inch subwoofers 1200 watts peak and 600 watts rms and I have an 2400 watt amp. I dont know what kind of box to go with a bandpass or a sealed box. If all of you could help me out that would be great. I want to know which on would make them sound better bandpass ot sealed. Thanks.
Michael Richard
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