do I need bracing for a 15L BR? - diyAudio
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Old 1st March 2005, 08:41 PM   #1
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Default do I need bracing for a 15L BR?

I'm planning on building the Fostex FE167e 15L recommended BR box out of scrape .675" MDF for fun. My question is that do I need somekind of bracing for a box this size? If yes, how would I install one and where? What does bracing do anyway? Could I get away with just using thicker boards? TIA...
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Old 1st March 2005, 08:51 PM   #2
joensd is offline joensd  Germany
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Quote:
I'm planning on building the Fostex FE167e 15L recommended BR box out of scrape .675" MDF for fun.
I built exactly this out of 0.75"-MDF and believe me it´s more than "just" fun. It´s a wonderful driver and the sound coming out of this little cabinet is quite pleasing. As it´s just 2 days old I still haven´t played with my sub to integrate with them.
If it works out well I´ll leave them as they are; if not I´ll probably try the FT1600 from Bob Brines.

I´d reckon you won´t need any bracing but that´s IMHO.
If you don´t mind the extra $ use birch plywood or similar which is much more rigid.
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Old 1st March 2005, 09:03 PM   #3
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Quote:
If it works out well I´ll leave them as they are; if not I´ll probably try the FT1600 from Bob Brines.
LOL, right now I have a pair of the FT 1600 but was wondering what all the fuss was about with the FE167e in a BR box. I have all this left over MDF from my kids closet project and will build these just out of curiosity and can compare it to a ML TL. Should be fun. I'll keep everyone posted...
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Old 1st March 2005, 09:20 PM   #4
joensd is offline joensd  Germany
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haha, you gonna do it the other way round?
We´ll see who get´s the bigger surprise .
And yes keep us updated.
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Old 1st March 2005, 10:42 PM   #5
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Cool...
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Old 9th August 2005, 06:32 PM   #6
joensd is offline joensd  Germany
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Hey father of the italian stallion, can you hear me?,
Did you built the recommended already?
Right now I can´t make a decision if I should go 25l similar to the omega-grande-loudspeakers or FT1600.
Which version did you built BTW, there are 2 different up on the website at the moment.

greets
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Old 10th August 2005, 05:00 AM   #7
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Well.... I did build the boxes but never got passed that point and their still sitting in the garage at the moment. I guess I got sidetracked and forgot about them. My finished size came out to be about 17L. Not sure if it would make a difference but thats what I got.

Okay now I have an insentive to complete them or at least give them a quick listening test.

BTW, Bob Brines has some plans for the FE167e in BR. He mentioned that its just as sweet as the FT1600 but will a little less bottom end and recommended a sub to go with them. Come to think of it, maybe this is why I never completed them. I think I had plans to build a sub-woofer first. Never got to that neither... Oh well, at least I can try the BRs without too much more effort or money. Stay tuned...
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Old 10th August 2005, 05:37 PM   #8
gamma is offline gamma  Sweden
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RockysDad: Please tell us about how it sounds...hmm 17 liters..just the same volume I'm intent to build for my FE167E !

I'm intending to tune the box to fs (51,5 Hz).
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Old 10th August 2005, 10:59 PM   #9
joensd is offline joensd  Germany
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Thanks Rocky for some hints to help my undecisive mind.
Think I´m going for the big one...

Quote:
RockysDad: Please tell us about how it sounds...hmm 17 liters..just the same volume I'm intent to build for my FE167E !
17l as is the 15l recommended is sounding very thin without a sub depending on what you listen to and the size of your room.
I just tried it today with my sub and that´s alright although I´d never built the15l again. (that is in a ~30m^2 room and about 2m from the wall)
Have a look at Bob Brines FB-16 or the omega-loudspeakers which have about 20-25l net volume.
Makes crossing over to a sub much easier and in a small room they might play well without one.

greets
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Old 11th August 2005, 03:50 AM   #10
gamma is offline gamma  Sweden
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joensd: Thanks for your advice

My room are just 22 m^2 (concrete in wall, floor and ceiling). So a 20 litre box mayby is the way to go. I just worry about midbass
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