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 Post subject: Box for 6 x 9 drivers
PostPosted: Mon Aug 27, 2018 12:48 pm 
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Joined: Tue Aug 14, 2012 5:15 am
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Location: Sudbury, ON, CA
I have an ancient pair of Infinity Kappa 693i car audio drivers.
I tried them out recently and they still work really well but they sound like ca-ca in those store-bought fuzzy boxes they're in.
I remember when they were installed on the rear parcel shelf on my car. The bass was incredible.
However, that car is long gone. I want to use these drivers at my cottage. So, I need to build some boxes.
I contacted Infinity customer support and Crutchfield, where I bought them.
Nobody seems to know anything about the T/S parameters for these drivers.
Does anyone here have any ideas of what size boxes I'll need to make to make these speakers sound half decent?


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PostPosted: Mon Aug 27, 2018 1:03 pm 
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Joined: Tue May 21, 2013 12:54 pm
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Location: Dodge City, NB, CA
How big was the trunk of your car?. Other than that, no idea.

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Last edited by KJT1 on Mon Aug 27, 2018 4:40 pm, edited 1 time in total.

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PostPosted: Mon Aug 27, 2018 1:13 pm 
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Location: London, ON, CA
Mounting depth 3.125 inches.
Attachment:
Kappa 693i.jpg
Kappa 693i.jpg [ 14.09 KiB | Viewed 288 times ]

Click here for more info on Kappa 693i

Ohms

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PostPosted: Mon Aug 27, 2018 4:30 pm 
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Location: Toronto, ON, CA
Car speakers are almost always high Q and unsuitable for enclosures, with the possible exception of reflex enclosures accompanying a severe loss of low frequency capability. If it's doable, I'd mount them in the wall cavity, or use them in an open baffle arrangement, or build a trunk sized box.

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PostPosted: Tue Aug 28, 2018 12:17 pm 
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Joined: Tue Aug 14, 2012 5:15 am
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Location: Sudbury, ON, CA
Hey guys, thanks for the input. That Thai ad was pretty amusing. I see now I should have added more info.
The car was a Volvo 240. The trunk was not huge.
Weirdly, when I loaded it with luggage or groceries the bass got deeper, tighter and less "Boomy".
The fuzzy carpeted boxes are freebies. They're sealed and they sound fine until they try to produce bass.
They are just big enough to hold the drivers.
I was thinking if I made them 50 percent bigger or even twice as big they might do better in the bass department.
If I see any improvement, I'd drill a hole and add a 2 inch duct and play with the length to see how low they go.
Please understand - this a zero budget project.
I don't need the performance of a high end factory speaker.
I just want something that won't make me nauseous.
And finally, intriguing as it may seem, I don't want 1/4 of a Volvo 240 hanging from the eves of my shack ;-)


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PostPosted: Tue Aug 28, 2018 3:07 pm 
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Location: London, ON, CA
Can you put them in a wall?

stereo3


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PostPosted: Tue Aug 28, 2018 3:13 pm 
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Location: dundas, ON, CA
Mount them in an open baffle system.


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PostPosted: Tue Aug 28, 2018 3:27 pm 
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ve3ews wrote:
I just want something that won't make me nauseous.
And finally, intriguing as it may seem, I don't want 1/4 of a Volvo 240 hanging from the eves of my shack

If these are for outdoor use, just put them in an open back enclosure with loads of stuffing (roxul, fiberglas) covered in mesh to keep nesting critters out. Lot of old school speakers were done this way...even without the stuffing...and didn't sound bad at all. 1/2cuft or larger should be enough.

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PostPosted: Thu Aug 30, 2018 8:14 am 
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Joined: Tue Aug 14, 2012 5:15 am
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Location: Sudbury, ON, CA
That sounds like an interesting idea.
I'd forgotten about that sort of "box".
I think I'll try that.
I want to thank all the participants in this thread for all your help.
Rick.


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