the newbie and the jaguar - Alpair BVR construction

human.bin · 11:34 PM

hi everybody, i thought of starting a new thread about the process of building a BVR for a pair of Alpair 10, since one year ago i tought a BVR cabinet was too difficult for a newbie, so maybe this can be usefull to others newbies as well worried about attemping it.

also (since the design is now on the CSS site) if anyone else have built them or is in the process of, this can be the place to share.

Scottmoose,
since i don't see anyone already around i don't really understand if the design is ready or still needs some fine tuning: i didn't want to bother you directly, so i tought a thread was a clever idea (if it is not, it can be deleted of course).

italynstylion · 4th November 2009, 08:52 PM

I've had the Jaguar plans on the back burner for a while now. I really need to find some time to build these. I've really enjoyed the Lotus^2 BVR's and I'd imagine that the Jaguar's are just that much better.

human.bin · 11th November 2009, 04:48 PM

thanks italynstylion, if you start building, take some pics, i really need to figure out how to stuff the chamber

human.bin · 11th November 2009, 04:53 PM

i've seen the the frugel-horn site has been updated, thanks people, that was one of the first pages i stumbled upon about diy audio and still one of the most inspiring...

regarding the Jaguar:

in this post Spawn of Frugel-Horn Les Winter says the side panels rings too much compromising the performance, is this something i should take care of or the three inside vertical/orizontal panels do already take care of this? if not what can i do from the inside?

do the BVRs gain anything from being on spikes? i see somebody is using them, but then i found no direct comparison on it...

human.bin · 11th November 2009, 05:03 PM

also can i do some aesthetics mods to the design? having the mouth looking like the Riley^2, or would it adversly modify the performance?

i'm attaching a quick photoshop of the original Dave's drawings (sorry Dave for scratching on them

), can any of the three solutions i sketched for a base work, or a combination of them?
i would like the back to look completely detached from the floor... i prefer the third option, which i can also sand making it solid, maybe in combination with a center panel liker per second option...

please let me know before i cut that expensive birch ply

thanks again.

human.bin · 15th November 2009, 08:44 PM

hi people, nearly 300 views not a single input??

is there a reason to that? to silly questions? already answered elsewhere?

or is my avatar guilty of being unpolite and infriged some sort of netetiquete of the community here or in the past? if so then an answer is of most concern to me than the ones regarding the speakers.

hope everything is fine.

rjbond3rd · 16th November 2009, 02:15 AM

Hi Human.bin, those look potentially a little unstable to me, unless the base were made of iron. How about a heavy piece of iron bent into a triangle (but a bigger triangle than shown in #3)?

I'm sure Dave or Chrisby will chime in shortly!

human.bin · 16th November 2009, 02:24 PM

thank you rj,
i was thinking of having the base sand-filled, made directly one piece of side-panels, the dimension is just for sketch also... more than stability my concern is that i don't know what to expect from the mouth of a bvr in terms of vibration and resonance, don't know if it takes special care of this not to mess things up (so that maybe it's ok on the alpair 6, but not on the tuning of the alpair 10). my only need is that the sound their best, the look is just a sur-plus.

also i don't understand if it's fine to continue the mouth down it's diagonal lentgh or if the original shape at the end of the mouth is part of the tuning of the box.

rjbond3rd · 16th November 2009, 03:11 PM

Hi human.bin,

Dave (maybe Scott and Chris too -- not sure) came up with some aesthetically and structurally clever variations for a different Scottmoose double horn, the Maiko. I heard the red one built by Mssr. Phil Townsend -- it had a spine up the back filled with sand. It sounded fantastic and I hope to build one at some point.

Another gentleman, richidoo I believe, built a blue one which looked like a sea creature. Here is the thread, which at the very first post shows some variations. Dave combines additional bracing with interesting bases:

New Maiko cabinet for the Feastrex D5nf

planet10 · 16th November 2009, 06:53 PM

A lot of leading edge aesthetic treatments were first proposed for Maiko...

dave

3rd November 2009, 11:30 PM	#1
human.bin diyAudio Member Join Date: May 2008	the newbie and the jaguar - Alpair BVR construction hi everybody, i thought of starting a new thread about the process of building a BVR for a pair of Alpair 10, since one year ago i tought a BVR cabinet was too difficult for a newbie, so maybe this can be usefull to others newbies as well worried about attemping it. also (since the design is now on the CSS site) if anyone else have built them or is in the process of, this can be the place to share. Scottmoose, since i don't see anyone already around i don't really understand if the design is ready or still needs some fine tuning: i didn't want to bother you directly, so i tought a thread was a clever idea (if it is not, it can be deleted of course). Last edited by human.bin; 3rd November 2009 at 11:34 PM.

16th November 2009, 06:53 PM	#10
planet10 diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	A lot of leading edge aesthetic treatments were first proposed for Maiko... dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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4th November 2009, 08:52 PM	#2
italynstylion diyAudio Member Join Date: Feb 2009 Location: Dallas, Tx.	I've had the Jaguar plans on the back burner for a while now. I really need to find some time to build these. I've really enjoyed the Lotus^2 BVR's and I'd imagine that the Jaguar's are just that much better.

11th November 2009, 04:48 PM	#3
human.bin diyAudio Member Join Date: May 2008	thanks italynstylion, if you start building, take some pics, i really need to figure out how to stuff the chamber

11th November 2009, 04:53 PM	#4
human.bin diyAudio Member Join Date: May 2008	i've seen the the frugel-horn site has been updated, thanks people, that was one of the first pages i stumbled upon about diy audio and still one of the most inspiring... regarding the Jaguar: in this post Spawn of Frugel-Horn Les Winter says the side panels rings too much compromising the performance, is this something i should take care of or the three inside vertical/orizontal panels do already take care of this? if not what can i do from the inside? do the BVRs gain anything from being on spikes? i see somebody is using them, but then i found no direct comparison on it...

15th November 2009, 08:44 PM	#6
human.bin diyAudio Member Join Date: May 2008	hi people, nearly 300 views not a single input?? is there a reason to that? to silly questions? already answered elsewhere? or is my avatar guilty of being unpolite and infriged some sort of netetiquete of the community here or in the past? if so then an answer is of most concern to me than the ones regarding the speakers. hope everything is fine.

16th November 2009, 02:15 AM	#7
rjbond3rd diyAudio Member Join Date: Jan 2007	Hi Human.bin, those look potentially a little unstable to me, unless the base were made of iron. How about a heavy piece of iron bent into a triangle (but a bigger triangle than shown in #3)? I'm sure Dave or Chrisby will chime in shortly!

16th November 2009, 02:24 PM	#8
human.bin diyAudio Member Join Date: May 2008	thank you rj, i was thinking of having the base sand-filled, made directly one piece of side-panels, the dimension is just for sketch also... more than stability my concern is that i don't know what to expect from the mouth of a bvr in terms of vibration and resonance, don't know if it takes special care of this not to mess things up (so that maybe it's ok on the alpair 6, but not on the tuning of the alpair 10). my only need is that the sound their best, the look is just a sur-plus. also i don't understand if it's fine to continue the mouth down it's diagonal lentgh or if the original shape at the end of the mouth is part of the tuning of the box.

16th November 2009, 03:11 PM	#9
rjbond3rd diyAudio Member Join Date: Jan 2007	Hi human.bin, Dave (maybe Scott and Chris too -- not sure) came up with some aesthetically and structurally clever variations for a different Scottmoose double horn, the Maiko. I heard the red one built by Mssr. Phil Townsend -- it had a spine up the back filled with sand. It sounded fantastic and I hope to build one at some point. Another gentleman, richidoo I believe, built a blue one which looked like a sea creature. Here is the thread, which at the very first post shows some variations. Dave combines additional bracing with interesting bases: New Maiko cabinet for the Feastrex D5nf

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