The air cavity in a BVR is treated just like a bass reflex... line the walls or at least one of each facing wall, do not impinge on the port exit.
dave
dave
Re: Re: Re: Re: olivia
I like it... I like it... 🙂 Perfect for supporting the smaller units. Thanks Greg. I've been a bit remiss over the woofers.
GM said:
I like it... I like it... 🙂 Perfect for supporting the smaller units. Thanks Greg. I've been a bit remiss over the woofers.
BHD said:
Probably like a cross between the BVRs & the longer path boxes. It's still a work in progress at the moment.
Re: Re: Sunrise over BVR Iris
I am a complete nub. My BVR Iris is my first DIY speaker. That said I covered the top, sides, bottom and back up to about 1/2 of the throat with three layers of 'felted' wool sweaters. The total thickness came to about 5/8 of an inch.
loninappleton said:
I am a complete nub. My BVR Iris is my first DIY speaker. That said I covered the top, sides, bottom and back up to about 1/2 of the throat with three layers of 'felted' wool sweaters. The total thickness came to about 5/8 of an inch.
Re: Re: Re: Sunrise over BVR Iris
Okay, so BR chamber plus half of throat area. This makes sense to me to tame the frequency leakage. I'm looking for clear mids and clarity in the LR. There is no 'one note bass' in my BIB, the frequencies can be discerned at the terminus by sticking my (good) ear in there.
What the BVR does is change where the ear hears the LR. My BIB is not in the corner but even so I'm taming that with the felt pennant tweak.
Thanks for the advice. I'll likely transfer this to the Harvey thread closer to completion.
What's your impression of the sound on, say, acoustic guitar? I usually use Martin Taylor to test a new build. Lot's of string decay and things in MT's work.
thoburnse40 said:
Okay, so BR chamber plus half of throat area. This makes sense to me to tame the frequency leakage. I'm looking for clear mids and clarity in the LR. There is no 'one note bass' in my BIB, the frequencies can be discerned at the terminus by sticking my (good) ear in there.
What the BVR does is change where the ear hears the LR. My BIB is not in the corner but even so I'm taming that with the felt pennant tweak.
Thanks for the advice. I'll likely transfer this to the Harvey thread closer to completion.
What's your impression of the sound on, say, acoustic guitar? I usually use Martin Taylor to test a new build. Lot's of string decay and things in MT's work.
Re: Re: Re: Re: Sunrise over BVR Iris
Well, I have not had the pleasure of listening to Martin Taylor. Maybe I should get a CD or two. Which ones do you like?
The Fostex FE167E in my Iris build has about 50 hours of break in. I have used a speaker break-in CD from IsoTek which I found very usefull. It even cleaned up the mids in my Vandersteen 2Ce Signatures. The drivers continue to improve and I have read that they will continue to improve even after 100 hours.
I made some long spiked feet out of stainless steel bolds and t-nuts. I can adjust the back tilt pretty easily. The following may sound unbelievable, but it is the honest true. I measured the distance from my listen spot to the edge of the driver. It is about 13 feet. I found that the right speaker was about 1/2 inch further away that the left. Before moving a speaker I used a plumb bomb to check the back tilt. The blumb bomb indicated that the right speaker was not tilted back the same as the left. After correcting for back tilt the 1/2 difference in distance went away. The result was amazing. Better imaging and a noticeable improvement in clarity in the mids. So, it is my impression that speaker setup is very important.
Side note" my amp and pre-amp are tubes. The CD player is a Linn Genki.
I listen mostly to classical, chamber and violin. I also listen to Jazz and mostly vocalists at that. I find the Iris to out perform my $1,700 Vandersteens in the mid range and they image better. The LF is good enough that I don't miss it much. The Vandersteens are better at LF. The really high stuff may be a bit better in the Vandersteens, but not by much. Over all I am very happy with my Iris build. In fact, the Vandersteens are in the closet.
I have a CD from Chesky called, I think "The World's greatest vocalists". The first track is Rebecca Pidgeon singing "Spanish Harlem". She is acompanied by a string bass. The bass is clear and distinct with no muddiness right down to the lowest string. Rebecca sounds so real you could reach out and touch her.
🙂 🙂 🙂
loninappleton said:
Well, I have not had the pleasure of listening to Martin Taylor. Maybe I should get a CD or two. Which ones do you like?
The Fostex FE167E in my Iris build has about 50 hours of break in. I have used a speaker break-in CD from IsoTek which I found very usefull. It even cleaned up the mids in my Vandersteen 2Ce Signatures. The drivers continue to improve and I have read that they will continue to improve even after 100 hours.
I made some long spiked feet out of stainless steel bolds and t-nuts. I can adjust the back tilt pretty easily. The following may sound unbelievable, but it is the honest true. I measured the distance from my listen spot to the edge of the driver. It is about 13 feet. I found that the right speaker was about 1/2 inch further away that the left. Before moving a speaker I used a plumb bomb to check the back tilt. The blumb bomb indicated that the right speaker was not tilted back the same as the left. After correcting for back tilt the 1/2 difference in distance went away. The result was amazing. Better imaging and a noticeable improvement in clarity in the mids. So, it is my impression that speaker setup is very important.
Side note" my amp and pre-amp are tubes. The CD player is a Linn Genki.
I listen mostly to classical, chamber and violin. I also listen to Jazz and mostly vocalists at that. I find the Iris to out perform my $1,700 Vandersteens in the mid range and they image better. The LF is good enough that I don't miss it much. The Vandersteens are better at LF. The really high stuff may be a bit better in the Vandersteens, but not by much. Over all I am very happy with my Iris build. In fact, the Vandersteens are in the closet.
I have a CD from Chesky called, I think "The World's greatest vocalists". The first track is Rebecca Pidgeon singing "Spanish Harlem". She is acompanied by a string bass. The bass is clear and distinct with no muddiness right down to the lowest string. Rebecca sounds so real you could reach out and touch her.
🙂 🙂 🙂
Re: Re: Re: Re: Re: Sunrise over BVR Iris
Here is the disk.
http://www.chesky.com/core/details.cfm?productcode=SACD323&category=1
thoburnse40 said:
Here is the disk.
http://www.chesky.com/core/details.cfm?productcode=SACD323&category=1
Re: Re: Re: Re: Re: Re: Sunrise over BVR Iris
Most of the Martin Taylor tracks I have are from "Artistry."
Where my other builds like the BIB shine are during an FM broadcast of
international music: Cuban, Brazilian, some African sounds (but no Pygmie chants on there yet.)
Since doing builds, everything is amazing to me and I get by with a
Yamaha RP U100 receiver which is my source for files and dvd. I have not put on broadcast tv in over a decade.
Back to the stuffing-- in the throat area the Harvey is severely tapered.
I'd probably experiment with a way to add/remove from that area to see what happens. With the BIB, the bottom comes off so that one is pretty flexible. Port blockage would appear to pose a problem.
thoburnse40 said:
Most of the Martin Taylor tracks I have are from "Artistry."
Where my other builds like the BIB shine are during an FM broadcast of
international music: Cuban, Brazilian, some African sounds (but no Pygmie chants on there yet.)
Since doing builds, everything is amazing to me and I get by with a
Yamaha RP U100 receiver which is my source for files and dvd. I have not put on broadcast tv in over a decade.
Back to the stuffing-- in the throat area the Harvey is severely tapered.
I'd probably experiment with a way to add/remove from that area to see what happens. With the BIB, the bottom comes off so that one is pretty flexible. Port blockage would appear to pose a problem.
Re: Re: Re: Re: Re: Re: Re: Sunrise over BVR Iris
I think there are several Martin Taylor CDs on the Chesky site. Thanks
I did not put any damping in until the cabinets were done. I used my wife's rotary cutter (its like a pizza cutter, only very much sharper) to cut strips of felted wool sweater to match the width and length of the CC box's surfaces. I then used a large staple gun (like the ones used to hang insulation in a wall) to tack them in place. I was concerned about glueing because there are three layers on each face. The only face that did not receive this is the front.
loninappleton said:
I think there are several Martin Taylor CDs on the Chesky site. Thanks
I did not put any damping in until the cabinets were done. I used my wife's rotary cutter (its like a pizza cutter, only very much sharper) to cut strips of felted wool sweater to match the width and length of the CC box's surfaces. I then used a large staple gun (like the ones used to hang insulation in a wall) to tack them in place. I was concerned about glueing because there are three layers on each face. The only face that did not receive this is the front.
You can find them on Amazon. I saw Martin about 3 years back doing a solo show in a little arts theatre (holds about 60) a few miles from where I live. Very enjoyable & he did a few things which, as he put it himself, the pretentious jazz-police would probably have heart-failure over (which can only be a good thing). Nice light touch & technically superb.
Sachiko Question
Hi,
I'm thinking about building the Sachiko but still undecided on what drivers to use.
Room size is 6.4 x 4.3m (21 x 14 ft) with speakers located along the short wall (4.3m/14ft) and firing down the length of the room.
Ideally I would like to use the FE206ES-R but lack of availability rules them out, would the FE208EZ be too much for a room this size? would the FE206E a better option (perhaps with eN mods)?
Dynamics and scale are a priority, music choice is varied but mainly a mix of rock/indie/jazz.
Any opinions or advice appreciated
Hi,
I'm thinking about building the Sachiko but still undecided on what drivers to use.
Room size is 6.4 x 4.3m (21 x 14 ft) with speakers located along the short wall (4.3m/14ft) and firing down the length of the room.
Ideally I would like to use the FE206ES-R but lack of availability rules them out, would the FE208EZ be too much for a room this size? would the FE206E a better option (perhaps with eN mods)?
Dynamics and scale are a priority, music choice is varied but mainly a mix of rock/indie/jazz.
Any opinions or advice appreciated
Either the FE206eN or FE208ESigma will be fine. I haven't compared the two yet, but I'm fairly certain the former will get close to unmodified Sigmas, though if you tweak up the latter in the same way, it will pull ahead again (so it should). If things get a little over-powerful (Sigma in particularly has massive air & weight in the LF -you'd have to shift to dedicated bass drivers to beat it) just damp it down. Better to have too much than too little. You can always do something about that.
Sachiko, curved front
Hi Scott,
Would a curved front as in the Curvey Chang be applicable to the Sachiko?
Regards and keep up the great work!🙂
Hi Scott,
Would a curved front as in the Curvey Chang be applicable to the Sachiko?
Regards and keep up the great work!🙂
Yes, but it hasn't been designed yet. A curved front option is on the to-do list for all the double horns, apart from 3 early BVRs.
Half-Chili Chang
1st pass of the plans for Half-Chili are done. If anyone would like to be an early builder, email me for the full plans.
Anyone interested in Changs of any flavour should have a look at the visualization... this is the 1st one i've done where i have explicitly added what i would consider the minimum amount of bracing.
dave
1st pass of the plans for Half-Chili are done. If anyone would like to be an early builder, email me for the full plans.
Anyone interested in Changs of any flavour should have a look at the visualization... this is the 1st one i've done where i have explicitly added what i would consider the minimum amount of bracing.
dave
Attachments
Yes I would...
like to look at the plans...
Do you think they could be built for the Feastrex?
Phil
Santa Fe
like to look at the plans...
Do you think they could be built for the Feastrex?
Phil
Santa Fe