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Discussion Starter #1
I'm getting ready to f'glass a custom enclosure in my trunk (form fitted to the side), and thinking about making the switch to a ported design. The IDQ10 however has a wicked long port requirement for this type of setup, I think something like 14" @28Hz for a 3" port. My box can be anywhere from .7-1.2 cubes in the area it, but i definately wouldnt have room for a straight port that size. Any suggestions for weaseling something in there, or should I think about an extension on the enclosure to fit the port ?
 

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I don't know if they still or not, but JL Audio used to sell that flexible port tubing that could be bent into just about any shape.
 

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I'm getting ready to f'glass a custom enclosure in my trunk (form fitted to the side), and thinking about making the switch to a ported design. The IDQ10 however has a wicked long port requirement for this type of setup, I think something like 14" @28Hz for a 3" port. My box can be anywhere from .7-1.2 cubes in the area it, but i definately wouldnt have room for a straight port that size. Any suggestions for weaseling something in there, or should I think about an extension on the enclosure to fit the port ?
Id use the dayton ports, they have angles and you can swing it. Or just go to home depot and grab some pvc and elbow joints. Ported is the way to go with IDQ. Id aim for 1 cuft at least.
 

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Discussion Starter #4
Yeah, I've heard lots of good things about porting them around 1cuft. If I have a non-straight port, does it matter what kind of elbows I get, or if there are minor variances on the inside diameter (ie: if I get a 90* elbow, its likely to have a minor gap between the pieces of pvc).
 

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No, they fit right in nice and snug. Just measure well. Aim for 30 hz and if its a lil bit longer, it wont hurt, would just lower the tuning which inst a bad thing for idqs.
 

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Discussion Starter #6
Is it possible to have too small of a diameter on a port ? WinISD actually says I could get away with 2 1.5" dia ports @ 10" which I could probably fit straight, but I can't say that I've ever seen a box with ports smaller than 2".
 

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Just check the vent mach to make sure you dont end up port noise from turbulence. If its in a sedan, you will probably be ok.
 

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Discussion Starter #8
Yeah, WinISD says the mach is below the threshold for noise, although close (.13). I think that may try going that route, would be easier in the end without any or a lot fewer bends.

On a side note, a second question with this enclosure if anyone else is reading this. I tend to hear most people reccomending a rear, or sometimes front firing sub, but mine will end up firing horizontally across the trunk. I may add a second IDQ10 later on directly opposite the first. Should I care about angling the mount for the driver like 0-45* towards the front or the back, or does it not matter that much ?
 

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side firing or rear firing is usually preferred. Front firing usually results in some loss of output. My sub is side fired in the rear corner like yours.
 
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