Mikasa, next?

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Clarification:

There is no "offiicial" FE167En by Fostex - the suffix "eN" was unofficially designated a few years ago by Planet10 to identify drivers modified with the EnABL treatment.

Fostex's recent revamping of the FE & FF series resulted in elimination of "7" series of shielded drivers (including the popular FE127E and FE167E), as well as substantial upgrade to FF series - including reformulation of cone materials (now 2 layer paper construction) and new dustcap. FWIW, based on initial listening to both the revised FE126En and FF85WK, I think the wait was worth it.


To the question of handling of large scale orchestral / movie soundtracks etc. - Scott is absolutely right that no small wide band driver in even the most effective horn / manifold design will likely do it all. Woofers / subs will definitely be required - helper tweeters, perhaps not necessarily. My personal recommendation for a space large enough for the required placement considerations would be the rear mouthed Victor for Fostex FE166En, or when fully revised plans available the Silbury / Avebury for Mark Audio Alpair 10.2 and 12.2 respectively.

I've heard the FH3 with several different drivers, as well as Valiant (FE126E) and Victor ( FE166ESR - smoke 'em if you got em kids!) and there's nothing quite like the scale soundstage the biga$$ enclosures can deliver.
 
Thanks guys, round two

Thanks for your exspeedent help guys

Scott, I really like your designs and I have no problem paying out my hard earned money for your plans. You are very passionate about this and should be rewarded financially. I think your rear firing designs will work better given my listening distance and speaker locations (see drawing). The hold up is the left speaker horn will be shooting straight out the door! This would mean me needing to install a pocket door to complete that corner. Lathe and plaster tear out and a new header... augh :crazy: ...is success really on the other side of convinence? Would these designs work better given my listening distance of 8"? Also, can a second driver be installed in that void for bi-polar operation (lots of stuffing, I am sure)? Just a random thought. I can increase my listening distance to 9' but would be right against the back wall, not to good sound wise with past systems. Is there a way to treat the back wall?

Chris, thanks for clearing up the Fostex line-up for me, I was quite lost. You like the FE166. Enabled or not? Have you heard the FE168eZ? You like the Appair 12 over the FE206 or FE208eZ? How are all these drivers in the 1K to 4K area? I like the look of the Sigma drivers. Has anyone dared Eanbled these? I am willing to spend $400 for a pair drivers and can push for $600 if it is REALLY worth it.

So here is where I am at:

A 6-8" driver, more then likely Planet 10 Fostex. The Victor or Hiro cabinet fits better in my room size wise (again due to the traffic passage needed next to the left speaker to the door), but may consider larger 8" model cabinet with super tweeter for more head room. In either case, I will eventually have some kind of sub-woofer (or woofers) for the <60Hz bass.

Thanks again for all the thought provoking inspiration .

P.S. do I need to move this project to a new or more approprate thread?
 

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Artsy:

No, I haven't heard all of the Fostex drivers on your list - of those I have, the FE166 EnABLed would probably be my choice. In the Victor enclosure they could more than fill the space shown in your sketch, although my only concern would be an imbalance in the degree of corner / boundary loading due to the door on left side of room, particularly if it's a standard interior hollow core unit. Replacing that with a solid core door would be my first step in room treatment, regardless of final chosen driver/enclosure.

Only experimenting will tell, but the nook with windows on the right side of the room could come closer to balancing the acoustic and room loading effects of the open archway on the left side than you might think. I'd certainly hold off the more major construction project of installing pocket doors - with modern materials a conventional slider is not particularly structural or provides a lot of soundproofing / boundary loading.


I very much doubt the Victor would need or benefit from rear mounted driver for bipole effect, and from my own experience (or due to 60yr old hearing) the FE166E wouldn't need tweeters.

All that said, I'd also consider the Alpair 12 in a design such as Pensil or when Scott has completed design update, the Avebury. While I haven't personally heard either of those particular combinations, I'd extrapolate on my experience with the driver itself as well as performance of numerous of his designs for smaller Alpairs and Fostex .
 
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Chrisb,

I am running FE166en in BiBs. Top is nice and clear, specially after installing phase plugs, did not feel the need for tweeters. Ears are younger than yours, but condition unknown :D.


I'd be concerned that in this case the required traffic access to door in left corner would conflict with normal corner placement of BIB enclosures, particularly if (while not stated) the door opens into the room.
 
Gychang,

There's a pic of my BIBs on post #45 before the phase plugs:

http://www.diyaudio.com/forums/full-range/183712-newbie-new-fostex-drivers-challenge-cabinets-5.html

Overall sound of the BIB is pretty impressive - I experienced large and open sound stage, good imaging and also plenty of bass when you put them in corners. The Fostex FE166en are 93 dB or more efficient, and even with 3.5 watt/channel I can get high SPLs. The BIBs are a fairly simple build. The only caveat I would say is the size and weight - my ones are over 5 feet tall and 16 inches deep IIRC. There's a monster thread on the forums that was started by Scottmoose on BIBs - you can find more info there too I am sure.

BIBs were my first FR experience and also my first build. They wowed me and now I am hooked.

The phase plugs worked for me with the FE166ens - I feel that they bass tightened up and the treble became clearer. The midrange shout is more tame. For me they were a pus, but YMMV.
 
The door and other ideas

I am sorry, Chris, I got you all mixed up about the door -vs- archway in my room:confused:. I have no intention to ever add doors to the archway on the left wall in this room. You are right, the acoustical balancing of this archway and the Nook of the right wall is excellent, it is one of the acoustically special things this room offers. It is the door on the front wall, behind the left horn in the drawing above, that we are addressing. It is a stardard door jamb that has a solid core door that opens into the room towards the left wall. However, the solid core door is currently in my basement, as I have removed it, because when it is open, it blocks a hot air heating vent and when closed, it messes up the air circulation of this room. These problems can be fixed by rerouting some of the heating duct work, which should be done for optium preformance anyways. Either way, my gut does not like the idea of the door returning. An alternative idea is to reverse the room - see drawings below. The only drawback to this is that the couch sticks out into the doorway more then I would like. What I do like about this set-up is the equal accoustical balance for both horns and how the sound will project into the adjacent rooms (I listen to my main system as background thoughout the whole house).

It looks like this room is a perfect canidate for the Victor system (first drawing).

Also, it appears with this reversed arrangement that we would have a better listening distance for the Hiro system also (second drawing). A wall of bookshelves on the front wall would look good with them, but I get ahead of myself. However, the Hiro set-up would not take advantage of the archway or nook either.

Opps, I got the Left and Right horns labels backwards!

So ultimately do I want the horn mouth to project out of the front or the back? I am guessing front mouth is more directional, disreet, and forward. I am guessing the rear mouth has more depth, scale and width. Which works better sonically with the driver or is it personal taste?

Zman01, thanks for sharing your BIB speakers. Have you given the BIB's to your freind yet? If so, what are listening to/building now? I love the diversity of people and ideas on this forum. You have sold me on the phase plugs, I have always liked how they look too. I will have planet 10 do mine, I have had a few drivers mods go wrong on me due to my own "lack" of expirence in that area. I like the big tall cabinets. Do they project floor to ceiling sound?

If there are any other threads you all would feel would help me clarify this project then feel free to direct me. Thank you very much.
 

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ArtsyAllen,

The BIBs are still with me - need my friend to pick 'em up and free the space :). To my ears the BIBs project a big sound profile; I have not listened to double mouth horns like the Victor, but from what I have read, they are very impressive when it comes to large 3D soundstage presentation and dynamics. More expereinced folks will be able to share their experiences and better use the lexicon when it comes to describing such speakers. I recall folks sharing listening impressions on the Sachiko (another Scottmoose design) in glowing terms.

P10 and Chrisb seem happy with how the Victor has turned out. It's a good looking box and decent sized (as in tall but not very). :)

Now I have Super Pensil 12s (awaiting stuffing adjustment) based on the Markaudio Alpair 12s. Even in the stage they are now, I really like them. I am reserving more comments for listening after getting the tuning right. I have built a Planet10 CHR-Ken also - nice sounding bookshelf speakers indeed.

Currently building the Wessex ML-TL based on 2 EL70s/cabinet. And yes, Lotus^2 parts are all cut, need to find the time and strength to put them together.

diyAudio is addictive! Have fun! :)
 
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Allen:

The flipped room layout has a better feel about it (now your only expense might be a shorter couch :rolleyes:)

Having heard more than a few examples of front and rear single and double mouthed horns, I'd generally opt for the rear mouthed versions, for the reasons you assumed - but as you opined, this is an area that can be very subjective.

This room also is a very good candidate for a BIB - a vastly simpler construction project than Scott's more elaborate manifold / horn designs.

decisions, decisions

I know, build several - that's generally worked for me ;) (just doing some quick comparative listening to some smaller Mark Audio based systems last night, there were 3 pairs in the room, with another 4 in holding area)
 
decisions, decisions

Allen:

The flipped room layout has a better feel about it (now your only expense might be a shorter couch :rolleyes:)

I know, build several - that's generally worked for me ;) (just doing some quick comparative listening to some smaller Mark Audio based systems last night, there were 3 pairs in the room, with another 4 in holding area)

Amen, brother - I could not agree with you more about replacing my ugly couch! I have not had a good enough reason to justify it, until now;). No hurry however.

Now building several cabinets sounds like alot of fun, as I really do enjoy woodworking. I do not have my dream shop yet, but I have the basics.

I have reread the Sachiko threads and like the impressions people feel from them. The only concern I have is the small sweet spot and lack of sound between the speakers nearfield. My keyboard is in the middle of this room (infact that is where I am at now). This is not my critical listening area, but it is my duaghter's favorite spot, as it is where we game together. It appears the rear mouthed horns will work better, and the BIB would be better still (in the nearfield). I need to do more reading on the BIB. My gut is telling me the horns project a bigger sound.

So it looks like I am reversing the room and building either a Victor or Vulcan (now that I have no more traffic to worry about) or a BIB. As far as the Fostex -vs- Alpair - it seems the Fostex are horn loaded 250Hz on down and the Alpairs are mass loaded (BRV) 100Hz on down. I have never liked BR cabinets in the past, but I have not heard BR done BRV so I am still open to the idea. I am guessing the horns have a bigger midrange.

...So Zman01, give us the low down on the sound characteristics of all your current designs. I am guessing the BIB delivered the largest scaled soundstage? What is your favorite so far, or better put, what are your likes and dislikes for your diferent designs?

Keep the ideas coming in guys, I have enjoyed the input.

Thanks, Allen
 
...So Zman01, give us the low down on the sound characteristics of all your current designs. I am guessing the BIB delivered the largest scaled soundstage? What is your favorite so far, or better put, what are your likes and dislikes for your diferent designs?

Thanks, Allen

Allen,

It would be dangerous :) and misleading to call out an outright winner. Each design is based on a different driver and that would also determine the sound. Besides that there is this small (no actually huge :)) matter of room and other component matching.

The Super Pensil 12 is a pretty big speaker and delivers a big sound stage too. The Fostex FE166en has a characteristic sound and some of the music like acoustic stuff does sound magical; their presentation is forward and a bit shouty, but phase plugs and more hours on the driver smooths it out a lot (or your ears get used to it :D). Being 94dB efficient, the Fostex can go really loud with even 3.5 watts. But overall I like the Alpair 12 sound more - I find the driver very smooth, very detailed, but not harsh; the bass is deep and tight, the big cone helps with the dynamics and in the Super Pensil 12 cabinet there is hardly any excursion at the levels I listen too.

Both builds have given me a lot of pleasure.

-Zia

p.s. The Pensils are not BR cabinets.
 
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frugal-phile™
Joined 2001
Paid Member
As far as the Fostex -vs- Alpair - it seems the Fostex are horn loaded 250Hz on down and the Alpairs are mass loaded (BRV) 100Hz on down. I have never liked BR cabinets in the past, but I have not heard BR done BRV so I am still open to the idea.

Topologically, and in basic form, the Woden V-Bomber series (Fostex) & the Megalith series (MA) are the same. The actual development went from a Maeshowe that was modded to accomodate the FE126, thru the larger ones, and then back to the larger MA.

dave
 
Here I go stepping into it: something not yet mentioned is the silly good Castle MT design. These have a very small footprint, yet with the top firing driver they deliver a huge soundstage, easily filling our 400+ sq ft open plan LR/DR/K space to quite acceptable levels. While they don't have the laser sharp head in a vise imaging of some smaller single driver enclosures, that's not something I necessarily consider a deal breaker.




Zia's points on listening distance for integration of front and rear output of the full size rear mouth horns and the forward (some find aggressively so) presentation of the Fostex FE series in smaller rooms are well taken. This is certainly not the case with any of the Alpairs , or in my brief experience to date with the new Fostex FFxxWK drivers


Then there's always the FH3 - a more compact horn designed for smaller drivers, with fewer of the room placement drawbacks of the bigger systems, yet by no means small in performance.

you're welcome :rolleyes:
 
Alpair 12.2 in the running

Allen,

It would be dangerous :) and misleading to call out an outright winner. Each design is based on a different driver and that would also determine the sound. Besides that there is this small (no actually huge :)) matter of room and other component matching.

The Super Pensil 12 is a pretty big speaker and delivers a big sound stage too. The Fostex FE166en has a characteristic sound and some of the music like acoustic stuff does sound magical; their presentation is forward and a bit shouty, but phase plugs and more hours on the driver smooths it out a lot (or your ears get used to it :D). Being 94dB efficient, the Fostex can go really loud with even 3.5 watts. But overall I like the Alpair 12 sound more - I find the driver very smooth, very detailed, but not harsh; the bass is deep and tight, the big cone helps with the dynamics and in the Super Pensil 12 cabinet there is hardly any excursion at the levels I listen too.

Both builds have given me a lot of pleasure.

-Zia

p.s. The Pensils are not BR cabinets.

Nicely written Zia! I feel ya, the Alpair 12.2s are in the running...

So the Pensils are Air Coupers? - I have never heard of that! I am amazed at how Scott and Dave can take the complex and make it simple. Although I really think you are going to like the Lotus!
 
Victor or Avebury it is

Until you sit it side by next to Victor/Vulcan/Silbury/Avebury.

dave

Thanks for coming along on my journey, Dave. Yes, I may have been misestimating the value of the Avebury design for my application. It is also in the running, alongside the Victor. My gut is telling me I am going to prefer the FE166En^2 in Victor over the Fe206En^2 in Vulcan. Has anyone built the Vulcan yet?

Does your EnAbled FE166En help with the "shout" Zia mentioned above?
The Alpair 12.2 EnAbled is in the "Is it REALLY worth it" catagory as far as budget is concerned. It sounds like this is new territory for you, as far as I can read off your website...

P.S. Do we need to move this project to a new thread? The "Mikasa" is being chopped so it is the Victor or Avebury "Next"
 
Opportunity

Everyone, I have read alot of posts tonight, and I feel very inspired.

Of what I can tell:

Hiro and Vulcan have not been built.

Victor has been built once and not tried with the EnAbled drivers.

Avebury (revised) has not been designed or built.

Alpair 12.2 has not been EnAbled?

Opportunity #1 is to build the Victor with the EnAbled driver.

Opportunity #2 - and this is the one that excites me, becuase it has not be done. It is an adventure. It is a win win for us all... ... Why don't I build the first Avebury with the EnAbled Alpair 12.2?

Hey, Scott, Beta tester available. This to me is what diy is all about, exploring new territory. I am an Artist, it is what I am created to do! Come on! Let's go on an adventure together! :grouphug: What do you all say! I am pure emotion now, but I am serious. Are you in?
 
frugal-phile™
Joined 2001
Paid Member
Thanks for coming along on my journey, Dave.

Been lurking all along :)

Does your EnABLed FE166En help with the "shout" Zia mentioned above?

Amoungst other attributes.

The Alpair 12.2 EnABLed is in the "Is it REALLY worth it" catagory as far as budget is concerned. It sounds like this is new territory for you, as far as I can read off your website...

New territory as far as price goes (except for some special orders), Bernie has a pair, a pair in Greece, and i've got 2 pair (and i have a set of copper done up & ready to go -- spare boxes too). These are revealing enuff that a FR rookie visiting from the other side of the country was able to hear the difference in diffraction signature between same driver in full-on miniOnken & CGR variation.

Note that the current gen A12 is a 2nd generation driver.

P.S. Do we need to move this project to a new thread? The "Mikasa" is being chopped so it is the Victor or Avebury "Next"

Or like Niklas' long thread the title could just be changed.

dave
 
A couple of additional thoughts:

-There have been several Hiro builds over the past couple of years -see the attached. One is a DIY build, the other a licenced commercial variation from the defunct CarderSound (Jeff had the misfortune to time his startup right when the bottom fell out of the world finances). From a DIY POV, of the Saburo / Hiro / Sachiko family, it was always the least popular. I don't know why, but I'd speculate that since it isn't physically much smaller than Sachiko, most people built that one instead.

-Vulcan has recieved positive feedback thus far, but since it's very new, for obvious reasons, it doesn't yet have much exposure. Avebury is at a similar status so you'd neet to be quick to have the first. ;)

-EnABL does not really affect the behaviour of a cabinet.
 

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