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Old 28th April 2013, 04:05 AM   #1
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Default Want to try OB-need suggestion for plans

Here's what I have- A receiver, four channel 1000w amp, mini dsp, and an underfloor IB subwoofer system. I want to try OB for music listening. I would have some room challenges, but want to give it a shot. I have REW and a mic to test frequency response. Can somebody suggest pairing of a woofer and mid/tweeter and a baffle plan? Don't want to get too expensive till i experiment to make sure I want to go all the way down the rabbit hole.. thanks gents! Max price for drivers btw, 500 USD for now.
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Old 28th April 2013, 04:15 AM   #2
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Cheap ? Goldwood ! And Zaph Audio....
Beer budget "Version" of $10,000+ Jamo Open Baffles
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Old 28th April 2013, 04:58 AM   #3
mortron is offline mortron  Canada
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Just built four 18" HFrames with a pair of used Visaton B200, and under $1000 with a big pro amp for bass, a chip amp and passive line level crossover.

Martin J King has some interesting projects and served as partial inspiration, but many other members have great projects that don't break the bank and are tops on fun.
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Old 28th April 2013, 05:06 AM   #4
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This definitely looks promising. One hang up would be that these would have to look very nice.I will do some reading then seek further advice. Thanks,
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Old 28th April 2013, 02:19 PM   #5
Pano is offline Pano  United States
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Have you seen my thread?
Fast, fun, Inexpensive OB project

Lot's of good info there and several versions. I highly recommend these as a place to start.
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Old 28th April 2013, 02:30 PM   #6
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Quote:
Originally Posted by Pano View Post
Have you seen my thread?
httop://www.diyaudio.com/forums/mult...b-project.html

Lot's of good info there and several versions. I highly recommend these as a place to start.
Thanks Pano!
Yes, those are at the top of my lust due to the low cost and ease of construction. Pardon the nube question, as I am still learning. Could the tops of the baffles have any amount of curve to change the appearance, or would that drastically affect the sound?
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Old 28th April 2013, 02:39 PM   #7
Pano is offline Pano  United States
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They could certainly be curved or slanted. In some ways that can improve the sound.

You have to be a little careful with a curve, as you don't want an edge that is equal distance to the driver - as you can imagine, that would reinforce any ripple in the response.

I've used the smallest of John's designs (the first one) in a bedroom and a hotel room. Worked just fine. John left some notes in the thread about wall distance. Remember that there is a null at each side of the baffle, so side wall distance is less important than the wall behind the baffle.
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Old 28th April 2013, 03:16 PM   #8
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Good to know. I will read some more. I have some beautiful birds eye maple veneer that was given to me that I may use. Thanks again
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Old 29th April 2013, 12:38 AM   #9
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Here's a kinda general OB question, not necessarily what I am going to do. Is it a possibilty to use both a PA style woofer along with a higher excursion, subwoofer on the same baffle? Or would that cause too much movement?
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Old 29th April 2013, 12:54 AM   #10
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Brilliant idea! The woofer, due to its high power handling, could be left unfiltered ( no high pass ). But problems may arise when chosing the
mid & treble drivers, which has to be mid-hi sensitivity.

The problems with vibrations, and sound mutation induced by them, may find
the solution by suspending the drivers ( not simply hang them )
String mounted dipole
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