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Thread: 4 8" ported bandpass box opinion... |
    
Gold Member Username: Jakeyplaysbass
St. Louis,
MO / ASU
Post Number: 3138
Registered: Jul-05
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| Posted on Friday, July 18, 2008 - 05:25 pm: |
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One of my friends got 6 of the ED 8s when they were on sale and has 4 of them left for his single cab trunk project. Sounds easy enough...right? Wrong.
He wants them ported BUT he doest want to be able to see the subs what so ever so he can put things ontop of the box. I thought downfire but then ive also been looking into 4th order reflex enclosures. So heres my 3 options...
A. A normal ported downfiring box.
B. A three chamber single reflex bandpass 
C. A three chamber Isobaric reflex bandpass
The subs would be clamshelled in C. |
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Bronze Member Username: Beamerboy46350
LaPorte,
IN
United States
Post Number: 68
Registered: Jun-08
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| Posted on Friday, July 18, 2008 - 05:28 pm: |
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Id go with B. because ive had great luck with bandpass boxes that were built right |
Gold Member Username: Jakeyplaysbass
St. Louis,
MO / ASU
Post Number: 3139
Registered: Jul-05
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| Posted on Friday, July 18, 2008 - 05:35 pm: |
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Thanks Keith. The shop is tossing the numbers into winisd right now and it looks if i do a bandpass it will be C. They are reading a ~+3dB jump from 34-39hz and ~+2dB from 40-44hz. Then it evens out until 67hz where it starts to dive. Im worried about the 8s tho i dont know if they can keep up with 30hz beatings all day long.  |
Gold Member Username: Jakeyplaysbass
St. Louis,
MO / ASU
Post Number: 3143
Registered: Jul-05
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| Posted on Saturday, July 19, 2008 - 01:40 pm: |
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Box builders help... Ive never done a bandpass this way so if you have any tips they are welcome! |
Diamond Member Username: Bestmankind
Post Number: 21790
Registered: Oct-05
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| Posted on Saturday, July 19, 2008 - 03:02 pm: |
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trust yourself jake. what does your heart tell you? |
Gold Member Username: Jakeyplaysbass
St. Louis,
MO / ASU
Post Number: 3146
Registered: Jul-05
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| Posted on Saturday, July 19, 2008 - 07:26 pm: |
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My heart tells me to play it safe and do the downfire, saying its not for my car but a friends. However i REALLY want to try the bandpass iso. |
Gold Member Username: Insearchofbass
Post Number: 9949
Registered: Jun-04
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| Posted on Sunday, July 20, 2008 - 04:55 pm: |
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Tell your friend the risks with the possible gain and if he says ok I say do the bandpass and set the crossover to filter out 33 or 34 hz depending how they sound. These are cheap subs anyway he wont lose much if they blow. |
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