Pioneer 8" BOFU BIB

[GM]

Guess I can't see the 'forest for the trees' since this made no sense to me last night and still doesn't after some sleep.

GM

 

[dpaws]

I'm dying to know how the coax mods go, I've been thinking about modding the Feastrex phase plug with one of these...

http://www.focal.tm.fr/catalogue-docs/EN/13/files/1172.pdf

Ok, it's hardly in the original spirit of Frugal but....

 

[planet10]

Re: what about question 1?

what about an iBiB and side mounting the BOFU? don't want the cats to wind up inside the blooming thing top down!

Side mounting is fine, but you may find there isn't enuff room to fit the driver.

dave

 

[nuconz]

Re: Re: what about question 1?

Side mounting is fine, but you may find there isn't enuff room to fit the driver.

dave

isn't there enough room in the inverted BiB - iBiB?

 

[nuconz]

Guess I can't see the 'forest for the trees' since this made no sense to me last night and still doesn't after some sleep.

GM

cats like to climb. dont' want one falling down into the pipe from the top down.

not a problem w/ iBiB - just a question of how to handle the bottom taper when inverted.

 

[nuconz]

what is the BOFU BiB F3?

anybody built a BOFU BiB and measured the low end response (whether scientifically or other)?

 

[Variac]

Coax thread

http://www.diyaudio.com/forums/showthread.php?postid=1675046#post1675046

 

[mightym]

Don't invert them, simply add a frame with some 1/2" hardware cloth stretched across it to the terminus ( could be hidden from view by an added molding around it ). Should be enough to keep even a rotund cat out of the cabinet.

 

[GM]

Or pet resistant screening. It saved me from being mauled by a large Raccoon that took issue with me grabbing the cat food bowl away from him (her?) and the various yard cats (including a ~25 lb Tom) I've had over the decades can climb up it without apparent damage, so not only makes a good vent screen, but is dense enough to act as a mild mids/HF damper depending on how tightly stretched it is.

GM

 

[nuconz]

Don't invert them, simply add a frame with some 1/2" hardware cloth stretched across it to the terminus ( could be hidden from view by an added molding around it ). Should be enough to keep even a rotund cat out of the cabinet.

actually it is best to invert them if side mounting the woofers to woofer the "proper" woofer height. too low on BiB; just right on iBiB.

 

[nuconz]

try it again:

actually it is best to invert them if side mounting the woofers to obtain the "proper" woofer height. too low on BiB; just right on iBiB.

 

[Bluto]

Bad circumstances have kept me away for awhile.

How many guys have built the B20 BIB? Is there a newer thread I'm not finding via search engine? Any posted pics I missed?

Thanks

Bluto

 

[nuconz]

Re: Bofu Bib

This thread is regarding the popular BIB speaker built using the Pioneer full range driver and a tweeter. It really sounds quite good, is full range, and the drivers are about $25 per speaker .

We built a pair out of OSB (oriented strand board ) or as it is sometimes known- flakeboard. With this were able to keep the total cost under $100 a pair. Of course other materials such as plywood
can also be used..

Attached are plans that allow it to be cut from three four by eight sheets.

Mark

i have been intrigued by this design since reading about it. not so crazy about 6' boxes in the room though.

anyone have an opinion on a 48" BOFU?

 

[planet10]

Re: Re: Bofu Bib

anyone have an opinion on a 48" BOFU?

Half Chang?

dave

 

[nuconz]

Re: Re: Re: Bofu Bib

Half Chang?


dave

no, sorry. a 48" BOFU BIB instead of the 75". not as low. should make 35 hz low end. leave the bottom to a SW.

 

[planet10]

Re: Re: Re: Re: Bofu Bib

a 48" BOFU BIB instead of the 75"

I'm no BIB expert but that doesn't sound like all that great an idea... Scott, GM?

dave

 

[Variac]

I don't think that would work , and I don't think that it would go to 35hz. But I'm not an expert.

 

[RKH]

I'm 'buttoning up' a pair of bofu bibs with dayton tweeters this week. I'll post some pics asap. I had some students start the project... it's taken me a while to undo a few of their 'design enhancements'.

more to come...

ryan

 

[loninappleton]

I'm 'buttoning up' a pair of bofu bibs with dayton tweeters this week. I'll post some pics asap. I had some students start the project... it's taken me a while to undo a few of their 'design enhancements'.

more to come...

ryan

What kind of design enhancements? Flames painted on the sides?



The BIB's have had a variety of design enhancements over time.

 

[RKH]

Oh, if that were it, i'd be overjoyed. I failed to catch the fact that some students believe that house framing skills and woodworking skills are synonymous. Needless to say, some of the bits do not fit together so well. These will likely end up with flames or the college mascot painted prominently on the side. I need to somehow cover up the bold felt tipped markers they used to identify parts and draw cut lines (on the 'purty' side of the plywood no less) ...


ryan

NB: that is not to say that they are not both (house framing and woodworking) endeavors that require skill. Only to note that in this case, my students applied not-so-great framing skills to a woodworking project.