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Old 22nd July 2010, 02:52 PM   #1
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Default Hi there, two designs, one decision. Simple Q'

For those that have BassBox 6 Pro, hopefully some of you, I have a question.

Which of these two designs would you go with, and why?

1. Dayton QT385-4 15" QUATRO in a sealed box with a Vb of 2.98 ft3 and a V(total) of 3.11 ft3.

2. Dayton DCS450-4 18" CLASSIC in a sealed box with a Vb of 2.67 ft3 and a V(total) of 2.962 ft3.

This will go in a car, and the box dimensions are designed to fit into a certain part of the trunk, and believe it or not, will preserve most of the trunk for storage still. This is a Chrysler Concorde with a giant trunk. I want to build a subwoofer which will not leave me with a feeling of something missing. I have settled on either of these two drivers due to cost/performance ratio.

These graphs include the 12db/octave curve optimistically expected.

Please ignore bracing and thickness of material for now.

Thanks!!!

Here are the files:

http://dl.dropbox.com/u/5430178/QT385-4_SEALED_CAR.bb6

http://dl.dropbox.com/u/5430178/DCS450-4_SEALED_CAR.bb6
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Old 22nd July 2010, 08:28 PM   #2
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Copy & paste your BassBox 6 Pro screenprints to Microsoft Paint. Save the pics to your hardrive as .jpg files. Uploaded the pics to a photo storage site like Photobucket. Use the Insert Image function to paste the pics' URL to this thread.
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Old 22nd July 2010, 09:02 PM   #3
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Save the jpgs to your dropbox public folder, just add the url as a picture in your reply.
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Old 23rd July 2010, 01:17 PM   #4
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Here is the normalized amplitude response, with a second plot of the included car acoustic response file of bb6. Obviously the car response is an estimate.

15" Quatro:
Click the image to open in full size.

18" Classic:
Click the image to open in full size.

As you can see I do not run windows, so I am using wine under arch linux. I could not move the graphs or resize them. I do not know if it is due to wine or just a bb6 thing.

Thanks guys!
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Old 23rd July 2010, 01:21 PM   #5
Glowbug is offline Glowbug  United States
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Quote:
Obviously the car response is an estimate.
Understatement of the year

Personally, I'd go with the Quatro. Really liked the one I heard, would be more than enough in a car.
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Old 23rd July 2010, 01:35 PM   #6
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Originally Posted by Glowbug View Post
Understatement of the year

Personally, I'd go with the Quatro. Really liked the one I heard, would be more than enough in a car.
My thoughts also. I don't think it will leave me with a feeling of anything "missing" either.

I plan on using 3/4" MDF with enough bracing, and some jet black cabinet carpet fro PE. I think this build will turn out better than my last (my first) hopefully.

I've been using an ApexJR "Super 8" in a ~ 0.4 ft3 sealed. I used some incredibly crap quality plywood and it chipped everywhere. It is unfinished in the trunk. It is a nice subwoofer and can put out some decent volume wth some surprisingly low response. But, sometimes, I want to turn it just a little louder without hearing unhealthy noises coming from it.

I think I will be able to use the amp I have been using with that on this new driver. Its about 200 watts, but the new one will have a much better sensitivity. I don't think I will want more than 200 watts going to it.
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Old 23rd July 2010, 01:38 PM   #7
Glowbug is offline Glowbug  United States
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Sounds like a good plan
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Old 23rd July 2010, 02:50 PM   #8
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Quote:
Originally Posted by Glowbug View Post
Personally, I'd go with the Quatro.
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