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02-12-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 121
Post ID: 9727
Reply to: 9693
A new set of directions with MiniMe
fiogf49gjkf0d

I did not have a lot of time to ply with my new DEQ options. From what I have seen it turned out to much worst then I remember it.  This think make soul-dead sound and I do not think that it shell be used for any purpose. I still have some thoughts about the DEQ as a tool and I might pass them what I have time in the DEQ dedicated thread.

The perspective of MiniMe bothered me more and I was contemplating if I need to start working with JBL LE5 driver more seriously. I have different way of thinking about drivers as I usually recognize the natural driver’s beast capacities and then just let them to be as they are. I do not like drivers, EQ, zobeling, impedance normalization and all the tricks with electrical resonators sitting between driver and amp. They all make the sound hollow – the acoustic pressure is there but useful sound is not. So, I was considering the time I might spend to it I decided do not and to go for another driver.

After some deliberation I make a move toward to Fostex 120A. I have to admit that I do not like Fostex generally. They have no “absolutely tone” and they are all overly glitzy and overly presumptuous. I never hear any harmonically-interesting sounding Fostex driver. From another side I do not look from MiniMe to get “interesting” sound but rather “none annoying” sound.  The Fostex 120A might fill need.

The Fostex 120A has look like similar mounting dimensions as my JBL:

http://www.madisound.com/catalog/product_info.php?products_id=264

and I was proposed what I might do with my smallish MF box to optimize it to use with Fostex 120A. The driver will use with Bud’s patterns and the specials measures will be taken to comfort the mean aluminum dust cap. I outsourced all Fostex 120A drivers cooking ceremony to David from

http://www.planet10-hifi.com/

he looks like have a lot of experience with all trios things, let see how it turn out.

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-13-2009 Post does not mapped to Knowledge Tree
op.9
Planet Earth
Posts 68
Joined on 01-26-2007

Post #: 122
Post ID: 9732
Reply to: 9727
You might hit me...but
fiogf49gjkf0d
I dare you to try....
http://www.lowtherloudspeakers.com/a55DP.html
or the new DX65...
I can testify that they work very well with RAALs, and used from 600hz up 90% of all your Lowther hatred will disappear!
cheers,


everybody used to call me James in my past other-worldly life.
02-13-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 123
Post ID: 9733
Reply to: 9732
Lowther DX65 as MF driver.
fiogf49gjkf0d

James, why shall I hit you? The Lowthers do fine MF drivers if not to stress them into full range. I actually thought about Lowther but what I was looking at them I did not see any interesting 5” contestants.  The new DX65 is 6.5-7 drivers and this is a whole new world with many possible 6.5” and 8” contestants. I am in 4.5-5” universe that surprisingly different drivers all together. It might not be a bad idea to go there and to use 8” driver but it is not how MiniMe was thought out to begin with.

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-13-2009 Post does not mapped to Knowledge Tree
op.9
Planet Earth
Posts 68
Joined on 01-26-2007

Post #: 124
Post ID: 9734
Reply to: 9733
Nearly fits...
fiogf49gjkf0d
Oh i see, DX65 has 140mm diameter cutout - as opposed to 105mm for the JBL.
time to make some more G10 dust with your file?!






everybody used to call me James in my past other-worldly life.
02-13-2009 Post does not mapped to Knowledge Tree
el`Ol
Posts 225
Joined on 10-13-2007

Post #: 125
Post ID: 9735
Reply to: 9733
Veravox 5
fiogf49gjkf0d
Romy,

I find the Veravox 5 drivers are strong contenders when searching for elevated sensitivity 5" drivers. I heard the Veravox 5X in combination with Shindo SET electronics and found it very natural-sounding. Both 5ers have ceramic magnets, however (the X-version a double one, back to back). The 5S can be got from Solen, the 5X currently seems to be sold out (also in Europe).
02-13-2009 Post does not mapped to Knowledge Tree
jessie.dazzle


Paris, France
Posts 456
Joined on 04-23-2006

Post #: 126
Post ID: 9740
Reply to: 8138
Cheating on Madame Macando
fiogf49gjkf0d
Forgive me for being so forward, but I have been holding it in for some time, and am right now, at this very moment, ripe for saying that I see this MiniMe thing as being analogous to an affair with a capricious little mistress bitch on the side. One with whom I think you are destined to become bored and frustrated. She is from another generation; you will simply offend yourself by attempting any interaction beyond the first-degree, the primal and the physical.

While admiring your youthful persistence, I feel the time is right to have that wronchy one-nighter and "get her out of your System".

Yes I too have something on the side; a pair of dirty-little-cheap-whore computer speakers, for which, given their humble origins, I can muster some respect.

Apologies; emotions getting the best of me here! Not to be take too seriously.

jd*




How to short-circuit evolution: Enshrine mediocrity.
02-13-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 127
Post ID: 9744
Reply to: 9740
Agree and disagree
fiogf49gjkf0d

 jessie.dazzle wrote:
Forgive me for being so forward, but I have been holding it in for some time, and am right now, at this very moment, ripe for saying that I see this MiniMe thing as being analogous to an affair with a capricious little mistress bitch on the side. One with whom I think you are destined to become bored and frustrated. She is from another generation; you will simply offend yourself by attempting any interaction beyond the first-degree, the primal and the physical.

While admiring your youthful persistence, I feel the time is right to have that wronchy one-nighter and "get her out of your System".

Yes I too have something on the side; a pair of dirty-little-cheap-whore computer speakers, for which, given their humble origins, I can muster some respect.

Apologies; emotions getting the best of me here! Not to be take too seriously.

There is no need to ask forgiveness – being overly forward is the only one way to communicate that makes sense for me.  I partially agree with you and in some instances I do feel disappointment with the direction where MiniMe have gone. However, I have some retinal that I sell to myself and that makes my actions semi- lucid.

You see, I have no other playbacks in my home besides Macondo. To power up Macondo I need 12 amplifiers, juts think about it. I have a habit to keep Macondo powered all time. Sometimes I keep the Macondo up from Friday afternoon to Sunday night, in many instance I leave home for a couple hours and do not turn amps down. It is hard to explain but when the amps up and Macondo is ready to play then it set some strange feel of comfort and calm in my room. You see, I listen a lot of FM, in many instances I have no idea what will be next and I like the ability of playback to be always on. It is not only music. I am a huge NPR fan and we have heard 2 stations that do NPR broadcasting. You know that feeling of “can’t get out of driveway NPR programming”? I catch it very frequently and I like to keep my playback all time up. Funny, but besides all considerations of perspective use of DHT tube for MF that might not be suitable for all-time-on-type of operation there is a consideration of electricity cost – it is actually tangible.

So, the ides to have a cheap and not demanding substitute for Macondo does not sound too pointless to me. I did bring up some alternative solution but they sounded very annoying even for listening the BBS news, I am not kidding. So, initially the MiniMe was conceived as not-annoying, all time on, alternative amp-driven speaker that will be literally all time on.

Here is where the plot got thicker. I am a bit lost balance where to stop. I thought to make MiniMe imbedded into Macondo’s frame but I realized that I might do better. At that moment I had to abandon any DIY attempts and get a commercial mini monitors. I did not. I think that was a mistake.  However, for the time and the money I have spent on the MiniMe I do not feel comfortable to "get her out of my System" not to mention that I would still need some kind of “all time on pilot system”.

So, in one way of other I will finish the MiniMe and will make it “none-annoyingly” sounding. Was it the best way to go and would I be able to make it by other means – unquestionably there are better ways.  However here is where I am and I need to get beast from the situation I found myself in.

The wonderful think about having an affair with a capricious little bitch on the side is to return back to your THE Woman and to realize how magnificent and how valuable for you your “the woman” is, if she is.  It sound strange but you would be surprise how much I learn about Macondo playing with MiniMe. It is not that I did not know the things about MiniMe – I very much know what I am doing with sound in my room, but I to my surprise realize that that to have a good quality but smallish mini-monitor with it’s mini-monitor in the Macondo’s listening environment is useful for some many perspective.

So, I would like the MiniMe to be finished and operations. I would like the MiniMe’s prose was outsourced all together from beginning but I did not go this way. My mistake but it is what it is.

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-13-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 128
Post ID: 9745
Reply to: 9735
The Cantare drivers and the Foxtex’s bid
fiogf49gjkf0d

 el`Ol wrote:
Romy,

I find the Veravox 5 drivers are strong contenders when searching for elevated sensitivity 5" drivers. I heard the Veravox 5X in combination with Shindo SET electronics and found it very natural-sounding. Both 5ers have ceramic magnets, however (the X-version a double one, back to back). The 5S can be got from Solen, the 5X currently seems to be sold out (also in Europe).


Your lautsprechershop.de looks like have them and they do look like interesting drivers.

http://www.lautsprechershop.de/hifi/index_en.htm?/hifi/cantare_en.htm

I never heard any Cantare drivers. I might herd them in fact but I never care too much about drivers if there were not mounted in horn and if I heard Veravox in any of box speakers before then I might just did not pay attention to them. I do not know a lot about the box speaker as what the time of my audio Age of Enlightenment came I was in the horn universe. I went of Foxtex not because I like them - in fact I do not – but because it might be a “safe bid”. In addition the 120A model will be different from all Foxtex that I heard and the custom cone treatment that will be implemented on my drivers will make them to sound very different than what I know. I have to note that what I said in the previous sentence all is allegations and promises from other people - I have no idea if it would be accurate but it might be “acceptable” in context of MiniMe restricted demands. I had a few interning 5” drivers in my aim but I figure out that Foxtex would be the safest bid and the easiest bid. Let see how wrong I was…

BTW, if I have an easy option to try the 11cm Gorlich drivers then I would gladly do it but to pay $1.4K juts for “trying”, without anybody underwire the result, is too much

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-16-2009 Post does not mapped to Knowledge Tree
floobydust


currently roaming the US
Posts 62
Joined on 01-19-2009

Post #: 129
Post ID: 9778
Reply to: 9727
F120A
fiogf49gjkf0d
 Romy,

 I picked up a pair of FX120 and F120A drivers over two years ago. I initially spent some time with the FX120 in a small 10-liter ported enclosure (similar to Fostex' recommended one but altered dimensions). After many months of listening I decided to swap the F120A in place of the FX120. The result was not subtle... despite the two drivers sharing several components (main difference is in the magnetic assembly), there is a significant improvement with the F120A. It's nothing like the other FE and FF series drivers. My initial posts on AudioCircle resulted in Jim buying a pair and immediately sent them to Bud for treatment (without having listened to them). My initial post is here:

http://www.audiocircle.com/circles/index.php?topic=46749.0

 In short, I've not had any treatments done to them, but they are by far my favorite of the small Fostex drivers and do not suffer from the typical "upper midrange shout" that the other ones do. They do have two limitations: 1- at 89dB sensitivity they don't get very loud with low power SETs. 2- With a 10-watt rating, you need to careful how hard you push them. In any case, within their limitations they are very good.

 Regards, KM


... just because you're paranoid, it doesn't mean they're not after you ...
02-16-2009 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006

Post #: 130
Post ID: 9779
Reply to: 9778
89 dB???
fiogf49gjkf0d
But how does that work with tiny amps?  Is this a case where the thing is used solo, as "FR", or something, or is it part of a starts-at-89dB multi-driver speaker?  I had some Rogers LS35As a long time ago, and they were fun for a while, nearfield, but with 25 WPC, min.  Adding Satterberg woofers changed everything, however.

Are the 120As perhaps "easier to drive" than other 89dB speakers?  How loud will they comfortably get?

Without going back to look, I thought I remembered the M&M tweeter and 2105 at ~93dB?  So the tweeter will get padded down, now?  Add the networks and woofers...  Sounds like a typical power-hungry box to me...

Best regards,
Paul S
02-16-2009 Post does not mapped to Knowledge Tree
floobydust


currently roaming the US
Posts 62
Joined on 01-19-2009

Post #: 131
Post ID: 9780
Reply to: 9779
Nearfield friendly?
fiogf49gjkf0d
 Paul,

 Points well taken. The F120A is listed as a FR driver. In my humble view, it does quite well for it's size, albeit the last two octaves will not be in full force (okay, the last octave is mostly MIA). It's lower sensitivity does not imply it's hard to drive... quite the opposite. It's an easy drive with a zero feedback SET and does not suffer from some of the problems of multi-way systems with complex crossovers being driven by such an amplifier.

 It has a very flat and peak-free response that extends beyond 15KHz, you get the benefit of the single driver concept, but you suffer from the low frequency extension (size does matter at some point). It provides a neutral presentation and delivers well on low-level detail unlike many other (Fostex) FR drivers. You even get the crisp sizzle on cymbals as an example, but none of the typical upper midrange shout common with many of the FE and FF series (which drives me nuts in a short timeframe).

 Due to it's size and sensitivity it could easily make for a nice nearfield monitor with 4- to 8-watts... maybe less. The Alnico magnet assembly (IMHO) is what makes these more unique when compared to the FX120... and the build quality and robustness (for such a small driver) does make this a much better driver (compared to the FE and FF series) but they do cost a lot more. Of all the smaller Fostex drivers, these are by far my favorite. Yes, they have their limitations, but they have their good points as well.

 Regards, KM



... just because you're paranoid, it doesn't mean they're not after you ...
02-16-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 132
Post ID: 9781
Reply to: 9778
The rumors about Fostex 120A
fiogf49gjkf0d

I am glad that you mention your use of 120A. I never heard it (consciously) and I bought it juts due to advice of 3 people, one of them was the guy who sold them. I have no idea what to expect from them but I think they shall not be too bad. I asked people about the 120A’s ability to care the ”absolute tone” about the ability to play loud but they do not comprehended what really I was asking. Well, the only think to get the right answers is figure out myself, I will. It looks like the Budanization treatment shall emptive further the 120A’s sound. I have no personal experience but I think it might work out. The guy from planet10-hifi looks like has a lot of experience with those drivers and he knows what he does. I do not know what his definition of “good sound” and where his reference points are but I do not think that whatever he does with the d rivers would hurt them. He claims a lot of different advancement after his treatment – will why not, it is high possible that he is correct.

My thoughts about the 120A are following. It most likely will be linear but with so typical for those drivers mechanic-like transients with some sense of hyper-resolution. I think that I might trey to battle it witch putting the RAAL driver in the game at HF and unloading the HF from the Fostex dome. It might work or might not – the Fostex might have a self sufficient HF, at least good-enough for the MiniMe objectives.

I do not think that Fostex 120A will play loud and it will most likely compress above 90dB as any other bad drivers. I think the compression will be due to soft cone exertion where the bend of the drivers will minimize the operational surface. People drive it all the way down but I will not and I will cross it relatively high, let say 500Hz and use a smallish box. By thin I will extend the power handling and possible ennoble it to play a bit louder.

Those are all speculation, let see how it goes. Floobydust, if you feel to express any critiques of the direction that I am planning to go with 120A then please do so. The driver will be her in a month or so…

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-17-2009 Post does not mapped to Knowledge Tree
floobydust


currently roaming the US
Posts 62
Joined on 01-19-2009

Post #: 133
Post ID: 9783
Reply to: 9781
More musings around the F120A
fiogf49gjkf0d
 Romy,

 Not sure I can add much more.... you'll find out yourself of course. Overall, I can not comment on the "enabl" treatment beyond what, Dave, Chris and Bud have said (Dave and Chris are the Planet10 guys). I think I would have tried them first before sending them off for treatment (the before and after experience). As for HF response, they do exceptionally well for their size. I don't find them offensive nor do I find them lacking. I also purchased a pair of the Fostex T90A tweeters to supplement them but never got around to adding them in after spending some time with them (F120A). Perhaps I should try and add them in at some point and take another listen. The frequency plot shows them to be exceptionally flat and well extended but they start droping off past 10KHz and another down-step after 15KHz. Still, listen to them before adding the RAAL and see what you think.

 As you're planning to run them in a limited range, I would still go with a larger box so you have options if nothing else. If you really have your heart set on the smaller box, I would be inclined to make it deeper and leave the back open and stuff it with fiberglass or whatever you normally use. I would also keep the frontal surface to a minimum and taper the edges off to reduce diffraction. The laws of physics will certainly limit their SPLs and (dynamic) compression will set in. Running them FR I feel this happens before 90dB, dropping off the LF should extend them a few dB or more. They do have a tight cell foam surround so this may limit their lifespan, depending on what they used.

 In any case, I'll be interested to hear your impressions on them. After spending some time lots of time with them, I picked up a pair of D5nf drivers.... here's some pictures comparing them side-by-side with the F120A. Enjoy.

http://community.webshots.com/album/561454797HMqgje

 Regards, KM


... just because you're paranoid, it doesn't mean they're not after you ...
02-17-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 134
Post ID: 9784
Reply to: 9783
About me, MiniMe, love and anything else.
fiogf49gjkf0d

Well, the points you bring up are valid but as anything else it all highlight problems with people not with equipment. I am not sure that I am glad with my decisiveness and sanity in MiniMe projects. I was trying to rationalize the MiniMe idea in the post above:

http://www.romythecat.com/GetPost.aspx?PostID=9744

… and did it and it sound sensible to me but my clear reasoning of MineMe concept did not bring yet any clear sense of accomplishment or even direction.

When I started the project I was under impression that whatever I will do will work or at least it I will be able to recognize as an acceptable for the given objective. However, if you look at the chain of mini-monitors that I in one way of another used over the few years for “all time all playback” then you see rather a chain of frustrations. The biggest problem is that even most of them are OK from hi-fi perspective but as soon they play classical repertoire (99% of my casual listening) then they begin to throw all imaginable nastiness that annoys me tremendously.  Then there is Macondo that is always a switch away…

If to call any of small speakers that I had in my room as MiniMe then it always well observable difference between Macondo and Macondo’s MiniMe. In trims of association I would call the difference is in perception of love. The Macondo has the perception of Florentino from “Love in the Time of Cholera”. It is idealistic but capable and faithful. The MiniMes are more in the line with Richard Sherman from “The Seven Year Itch” – it is self-delusional, malpracticing, contradictive and destructive. It is very indicative to have them side by side. The idea with my custom MiniMe projects is trying to leverage that sense self- destructiveness by letting MiniMe do not do anything specifically good but at the same time setting a base where MiniMe would not be doing the bad things. Well, it turn out that it is easier to say then to do.

Now I moved to another uncharted territory with F120A driver that would most like force me to use another enclosure for MF section (the bass section will remind as it is very good). I have no idea what I will be getting from F120A and this made me to plug the Planet10 guys into the game. From my experience with JBL LE8 I remember that the aluminum cone needed a lot of work, why do not let somebody else to deal with it who reportedly has this experience? About the “enable” – I do not know. I personally do not have experience, people swear that it helps and I also receive some warning from people that it also hurts. I have no idea how to intermit all of it, not to mention that I never heard anything TOGETHER with the people who support of deny the benefits of “enable” treatment. We can run out mouths on internet for year but until two people are sitting in the same room, demonstrating to each other the witnessable results and correlate own reference points about the heard then it is very difficult to find and subjective common denominator for sound assessments.

As far as I can see it the main benefit to have the Planet10 involve into the F120A’s saga is to have somebody to blame if the drivers will sound like crap. What do you expect – I need to preserve my ego.

Anyhow, let see how F120A will work in band-path. It is possible that it might be good enough (for MiniMe objective) without any tweeter – I will be only welcoming this news. I suspect that I would need to kill the F120A’s “resolution” with a very mind inductor but they are juts speculations at this point. Obviously I will listen to them before adding the RAAL. I wonder how low F120A goes without filter in open baffle or in open box that you proposed? It is can do 3250Hz-300Hz then 600Hz-700Hz might be a good crossover point trying to dive it hard.  The specks for his drive show very low response but I have no idea in which enclosure then measured it.

The caT


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-17-2009 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006

Post #: 135
Post ID: 9786
Reply to: 9784
Another Brain Fart
fiogf49gjkf0d

Perhaps on a given planet it might make sense to use a Tannoy DMT 10 or Sterling HE as the Oops channel AND the Always On Channel, just by swapping or switching the cables, per function?  I mention it because these are two potentially-inoffensive (mid-field) monitors that can actually put out some Music, too (given enough power, of course).  Totally ignoring all efforts and expense in other directions to date, this just might take care of the space issues and the sound concerns simultaneously?  (And perhaps the Smithsonian would be interested in the exotic leftovers...)

Best regards,
Paul S

02-17-2009 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006

Post #: 136
Post ID: 9791
Reply to: 9786
In Passing...
fiogf49gjkf0d
Probably not news, but:

http://www.supravox.fr/anglais/haut_parleurs/135_LB.htm

Another one that at least looks the part.

Paul S
02-19-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 10,160
Joined on 05-28-2004

Post #: 137
Post ID: 9799
Reply to: 9784
How to properly high-pass a full-range driver.
fiogf49gjkf0d
 Paul S wrote:
Probably not news, but: http://www.supravox.fr/anglais/haut_parleurs/135_LB.htm Another one that at least looks the part.
Thanks, Paul. This Supravox 135 LB indeed looks like an interring driver for a project of mine. I have no experience with Supravox drivers, it look like then do not swim over the Atlantic well.
 Romy the Cat wrote:
Anyhow, let see how F120A will work in band-path. It is possible that it might be good enough (for MiniMe objective) without any tweeter – I will be only welcoming this news.
I was thinking about it further: if the Fostex 120A will be able to care HF acceptable enough without annoying me then I might end up to use one driver per monitor. Than begs tow biggest questions: what box to use and how to crossover the driver at the bottom. About the box. Sure I do not what it to be big. The Planetary’s David Dlugos proposed Aperiodic idea and send me information how it might be implements. Good idea but it would still require a slight bigger box then the MiniMe’s MF section is. I was looking at my closet and I have found a box the shape and dimensions I like – I will try to us it. It will be with semi-open back, let see how it goes. The approximate estimate of crossover would be 300-500Hz. I think I will measure how it will response wide open and then will cross is an octave or two above to let it to be stressed with less pain. Now the question how to cut the LF off the driver. If I have 200Hz then I have 100uF cap sitting in series with the driver. Molts likely I will go for my favorite active biasing filtering but I doubt that I like to pass the HF over this thing. I will not be able to use RL filer as it will eat a lot of gain. So, what other options I have to suck LF out of the 120A driver? A bi-amping with line level RL filter? That is a chance but is anything more elegant in there?

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-19-2009 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,658
Joined on 10-12-2006

Post #: 138
Post ID: 9805
Reply to: 9799
Cap and Coil
fiogf49gjkf0d
Romy, I suspect that 200 Hz high-pass will be too low for that driver, even 2nd order, and almost certainly with just 6 dB roll-off.  I think more like 500 Hz with 1st order, and might still require the coil.

Yellow-type drivers take on and amplify the sound of any enclosures.  I don't know about the Fostex 120A, but they often test other, similar drivers in OBs.  For one thing, OB adds ~ 3dB of potentially-interesting "oops", and can be "shaped", via baffle step.  For another thing, no box noise.  I also tried a small sealed box, and it was not so much "bad" as it just ate power.  A driver that small might do with around or even less than 1 cu. ft. box, whether sealed or ported, with minimal interior stuffing, crossed where it makes sense to do so.

I still like the idea of the dual-purpose oops/monitor...

There is supposed to be a Supravox USA, but I could not raise them via e-mail.  But the French are civilized, and easy enough to do business with, and decent prices (without VAT).  There is also an Italian outfit that promotes Supravox pretty heavily, with decent prices (without VAT)

Best regards,
Paul S
02-19-2009 Post does not mapped to Knowledge Tree
serenechaos
lost alamos
Posts 86
Joined on 12-01-2007

Post #: 139
Post ID: 9808
Reply to: 9784
Non annoying monitors
fiogf49gjkf0d
Good luck getting midrange from F120A for non annoying monitors. 
Seems reasonable to expect, many people have been very happy with these drivers... 
I haven't tried this specific driver, but have spent some time trying to get a similar (FE138esr) to "behave" well enough to be used as a "simple, second system." 
Although made by the "yellow driver company," these grey coned, alnico magnet drivers do have a different tone, and don't have the painful (to me) whizzer highs. 
I thought the 138 (later model of 5") would be great for this application.  
The magnisium dust cap was supposed to carry highs out clear to 30k, blah, blah...  

The dust cap made more peaks than whizzersand depending on the key the music was in, it was annoying, unlistenable...  
It did work well with a ribbon though.  
138 crossed below the peaks, first order, ribbon crossed higher, third order (had to futz around with that for a while to get it to integrate nice though). 
Have a slight (2dB) tilt down from 150Hz to 15kHz.  

The box is the on going problem...   
Tried Transmission Line (sounded passable, but a lot bulkier than I really want), sealed box (lost too much tone, sounded "stuffy," compressed), and planet10 bvr (good for firewood if I had a fireplace; sound like heavy felt was placed in front of driver). 

I've heard the planet10 bamboo aperiodic fonkens with enabled yellow drivers... 
I'll say that was enough to know not try that cabinet.  Or as my wife said, "why would anyone waste the time with those?"  They don't even do a girl singing with a guitar, what would they do with music? 
I mean, I know no box is going to sound like a front loaded horn. 
Or have the dynamics, or resolution, or not break-up @ higher volume levels.   duh. 
But I still don't think that "non annoying monitors" should be too big of a goal? 

Oh, and I did hear an extended A / B demo of enabled drivers, in my home. 
A guy brought some over, & I switched them back and forth @ will, with different material playing... 
No doubt about that one, Bud is on to something... 

Robert
02-20-2009 Post does not mapped to Knowledge Tree
floobydust


currently roaming the US
Posts 62
Joined on 01-19-2009

Post #: 140
Post ID: 9816
Reply to: 9808
Comparing apples to oranges
fiogf49gjkf0d
 Robert,

 It's well known that you (and others) had a bad experience with the FE138ESR driver. I've not heard the FE138ESR (yet) and will not comment on it until I do. Likewise, as you've admittedly not heard the F120A, to draw parallels to the FE138ESR and conclude that it's a bad performing driver is simply unrealistic.

 Regards, KM



... just because you're paranoid, it doesn't mean they're not after you ...
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