Porting an IDQ10 in a custom box - Car Audio | DiyMobileAudio.com | Car Stereo Forum

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Old 07-14-2007   #1
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Default Porting an IDQ10 in a custom box

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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Old 07-14-2007   #2
 
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Default Re: Porting an IDQ10 in a custom box

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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Old 07-14-2007   #3
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Default Re: Porting an IDQ10 in a custom box

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Originally Posted by kknack View Post
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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Old 07-14-2007   #4
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Default Re: Porting an IDQ10 in a custom box

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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Old 07-14-2007   #5
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Default Re: Porting an IDQ10 in a custom box

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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Old 07-14-2007   #6
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Default Re: Porting an IDQ10 in a custom box

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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Old 07-14-2007   #7
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Default Re: Porting an IDQ10 in a custom box

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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Old 07-14-2007   #8
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Default Re: Porting an IDQ10 in a custom box

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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Old 07-14-2007   #9
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Default Re: Porting an IDQ10 in a custom box

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.

Subaru Impreza - Pioneer MVH-1400NEX - Zapco Studio 100 - ESB DT 8.25 - Zapco ST-204D SQ - ESB 8.165 - Sundown SD3-10

Jeep Patriot - JBL MS8 - Alpine PDR-F50 - Kenwood KFC-XP6902C (6x9 + 2.75 wideband) - MB Quart P19 tweets - Alpine PDR-M65 - Boston Acoustics g5 10"
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