1/4wave t-line box for two 8in subs - Car Audio Classifieds!
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  #1  
Old 01-17-2014, 05:08 PM
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Default 1/4wave t-line box for two 8in subs

this box is for a pair of Massive Audio "Hippos" 8in

heres what i got so far.

any changes that need to be made??

subs are in about 0.6cu with 51sqin of port and port is 78in long and the tune is the fs of 41hz






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Old 01-18-2014, 10:18 PM
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4x8ft sheet of mdf


tools laid out


lines made


panels cut


mock-up


pre-drilling holes


all glued and sealed off with port painted black


testing location of led in port


led glued down and led wires ran


green led board i made screwed on and wires glued and ran in corner
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Old 01-18-2014, 10:20 PM
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will try to get off work early tomorrow to finish the speaker holes, speaker wires run, 45s, glue top on.
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Old 01-19-2014, 02:00 PM
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good work so far man
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Old 01-19-2014, 02:33 PM
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needs moar 45s!
good work so far.
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Old 01-19-2014, 02:39 PM
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looking good, interested to see how this works.
I keep looking at those hippo 8's......gonna click "buy" one of these times
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Old 01-19-2014, 04:55 PM
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Thanks guys. Look like I wont be getting off early today so tomorrow ill have to get this done.

I have 1 hippo in a 6th order and it sounds ok but I think a 4th will sound better for these.
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Old 01-20-2014, 09:29 PM
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cut out speaker holes


test fitting in my car (damn it was a tight ass fit!!)


wanted the port to be faceing the rear but it was hitting the back of the car so i have it firing forward.


now im going to break in the speakers till this weekend and drop the 45s in and glue and seal the top off
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Old 01-20-2014, 09:39 PM
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did a quick pounding with the box and its tuned a bit higher than im used to but i have to remember that these are 8in sub and not 12s or 15s.

but in my opinion so far this is sounding pretty damn good and most important LOUD.
it pounds at the tune point (41hz) and gets pretty low (25hz) and sounds good at that low but i think because the port is firing forward the low note dont have time to travel b4 it gets to me, so i think the lows COULD sound alot better if i flip the box to fire the port back.


but i know the 45s in there should make a difference in the sound and sealing off the top.


so stay tuned more to come plus videos too.
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Old 01-20-2014, 09:40 PM
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oh and this is the amp im using wired to 1ohm. (600wrms)
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