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After seeing that there was 10" and 12" Super Audio Nirvana I was dying to try one in an open baffle. I made a baffle out of birch and flushed it against a 6.5 cubic ft. bass reflex cabinet. with a 15" Eminence driver. I use the 10" Nirvana full range and the bass actively crossed at 75hz. I must say it sounded great right out of the gate. After a month I've still done no tweaking or felt the need.The 10" Super Audio Nirvana needed no super tweeter, no crossover , no eq ,and no special speaker wire. For me, it has sound quality, dynamics , and imaging only rivaled by the Tractrix Front Horn. I would consider this to be a best sound for the buck system. Here is a link to all of my projects.http://gallery.audioasylum.com/cgi/view.mpl?UserImages=33876&session=
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ubidee, ubidee, ubidee... uh, that's all, folks!
without adding a crossover of any kind would be replacing the coupling cap of your amp with a smaller one. Relieving the opts and the driver from the lowest bass should help them to better reproduce the frequencies that don't cancel by the open baffle. I have an idea of doing this at the same frequency that the baffle width creates the roll-off. You would effectively have a second order high pass.Of course if your amp is direct coupled please disregard all of the above!
Thanks for sharing, Les.
I see you've used both.TIA
The 8" requires a super tweeter and the 10" does not.
Hey Les,Nice job--shore is purty. Brace for question barrage!
What wood and finish is that? What are the baffle dimensions?
Dang, no more photos of it on your page. I'd like to see some shots of the back, construction details, etc. Live to serve me! ;)
Is that a curved top on your woofer cabinet--or just a curved faceplate?
Which Eminence driver?
Hmmm... I wonder what are the implications of a wide baffle on a ported bass enclosure? Increased directivity? (Just winging it there.)
Running the FR FR, huh? I wonder if actively filtering the bass out of it wouldn't open it up even more. What sort of music do you listen to?
Okay, okay, I'll stop now.
Good fun! Thanks for posting and congrats.
Best,
George
The wood is 13 layer birch. 48" x 48". Just a curved faceplate. The bass cabinet is the Oris Reference 15 design. Custom Eminence 15 similar to K-33. If you were to put a high pass crossover on the full range , the imaging would be shot to hell. I listen to it all. Last night I listened to Yello , Frank , Vicky Carr , and even Jim Nabors.
No filters of any kind on the FR is a major deal.. I can see why you like it,,I would like to hear that to compare my OB system..the 70hz XO is also impressive,, I have to go to 150hz.. I have seen little on OB systems with the AN 10 or 12, both have good OB specs.. I am sure more people will pile on. You also use a AN drivers in your horns do you not..? I am sure you like the impact of that bass sytem, I would to, but have you considered OB bass.?, it is exteremly fast & very detailed stuff.. as I hear it..
I do use Super Audio Nirvana 6" in my Tractrix front horn. I'm experimenting with a 15" in an OB for bass but I'm no quite there yet.
I'd suggest using a zillion cheap 15" drivers, rather than a single good driver.
That giy that sells those drivers throws the bullshit around so freely I wouldn't believe him if he told me night was dark and day was light.If somebody GAVE me those drivers I'd toss 'em in the garbage unheard.
By the way, has anybody but Kurt ever admitted to a bad sounding OB? I think Berenek's law is going around here like the Black Death.
Tom .... For all your learnedness I'm surprised at your ignorant wrath.
He's a SALESMEN. Doesn't that give you a clue?
So you've never bought a car from one? Guess that means that all cars are crap.
Zene
Well Tom,There is little doubt that Mr. Dicks has a rather eccentric idea of how to market his product lines. Even if absolutely true, the overtly verbose natutre and VOLUME of his claims tend to turn off persons like you, and me. What a potential quandry he puts some of us in because most of the products that he markets can (under the right conditions) live up to his bombastic claims of audible superiority. I think he means well though. I just wish that he would turn it down a bit. I have made such suggestions directly, to no avail.
Well the claims on the website are rather extravagant!
:-D
There are three constants in life: death, taxes, and the inevitability of a (speaker)wire thread being closed -SY
I must say. You audiophiles are just not HAPPY. The real question is, what in the hell are you looking to achieve in you listening. I personally have auditioned everything LES has built.
They all sound great. Now why not try the AN drivers vs. you overpriced British banana pulp drivers. COme on 2500.00 Just for thos arrogant Brits to buid a simple driver. Why can't you people ever be happy. I have myself tried so much crap high end low end you name it. Over priced cables bla bla bla. what i have settled for most of you would cringe on. But just Ask LES he will tell you what this low budget system is capable of. Well happy searching to all of you audiophiles out there. And don't forget your 2500.00 interconnects with magic dust. Peace.
It could be a factor with regards to open baffle. Personally I'd say more for wide/full range drivers. It is nice to not have a crossover but to my ears the compromises are too great.I am trying to be honest with myself about what I hear with open baffle. That is one reason I asked about measuring. When I decided to go in that direction, several months ago, I wasn’t aware it was going to be the “flavor of the month”.
At present, I am only running open baffle from 250 to 1,800 hertz. I find it to have a “spacious” soundstage.
I decided to go open baffle with an active crossover because I felt this approach eliminated two big stumbling blocks for the first time speaker builder. I am only willing to consider pro audio type drivers with bandwidth and power handling in excess of my needs.
Russ
P.S. Did you ever pick up one of the TDM crossovers (or any other brand)? If so I’d like to know how it worked out for you.
Russ---Never bought one. I was gonna tune-up my 605s by bi-amping and then using them in my HT but before I could do that I came across my Model Nineteens which then supplanted my notion of using the 605s. And I think the Nineteens are best used with their own passive crossover because of the EQ in the network.
That seems foolish.
Not even try them? So is one to think your mind is so rigidly
opinionated as to be effectively closed for any new business?Seems like a strategy which eliminates the possibility of learning
and discovery to me.-T.M
TM---It's me that would throw them out not Badman."Seems like a strategy which eliminates the possibility of learning
and discovery to me."I'll get by, it's speakers not The New World. After 58 years I've developed a pretty good sense of when somebody is out to bullshit me and the guy who makes those drivers is out to bullshit us. Just read the outrageous claims on his website, like we're morons or something.
You can't do business with everybody, you have to filter people out and an attempt to treat me like a goddam idiot sets off my filters everytime.
Kind Regards
Why try the bad ones or questionable spec drivers with so many good transducers I dont have time for the poor performing.When one gets to know a bit about drivers its easy to see threw some of the marketing BS without having to buy and try.I am not refering to the drivers Less used just in general.
then not even take a few minutes and hookem up? Come on...
Making a purchasing decision is one thing, just refusing to
listen entirely is more like starched arrogance to me.
Agree?P.S.I know that "Common Sense Audio" guy is full to the brim with
marketing B.S. (just look at how he gushes about those honky damn' FE206's), and I'm totally skeptical of any claims on that site,
and probably will/would never buy from him. BUT...
Les Hudson obviously has experience with MANY quality drivers and
varied cabinet configs --and so why not give a little consider-
ation to his opinion on that basis?I think there are a few clowns here on this forum who just like
to take every opportunity to crap on Les's commentary at every
opportunity --why? I have no idea. But if I see people acting
like immature dicks, I reserve the right to say something.-Tom
I'd rather spite the guy. It's an Irish thing.
???
cool - so its more effective than P-audio 15 - is it going out of the gap much at 75Hz with robust transients? - what slope to super 10? could it be happy on a narrow baffle with not too deep fold-back wings? how does Super 10 sound compared to Ciare CH250?
The driver doesn't seem to be affected by low frequencies. I think that all OB systems have to be large no matter the driver. My first ob was actually too large, it was 60" wide and had a big bump at 100hz. When I went to a 48" baffle it smoothed out the bump and created a linear response.
I've tried every driver that I can get my hands on in the OB and the 10" Super Audio Nirvana sounded best.
B200...?
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