Good point. The fact it might have been re-coned means they might have seen some abuse!
Yes, I think I'll definitely make enquiries about the Vortex-15s. I have the room to make something that large.
I'll take a look into the Shroeder frequency. Does it usually take much woodwork to create a roundover that large? And given that it's for the benefit of the HF it would have to be smooth, rather than a series of petals or something like that.
I noticed that 'softness' with some Alpha 8as that I have. Gently does it!
I think I want to go for a 15" woofer. I like the idea of a simple design without subs, but if need be I could probably get some of the woofer's sensitivity back if I took the Bass from the coaxials.
#gotclamps?
Looks good Glenn! When you've built them and set them up, could you share a sound demo of them on YouTube (or similar)? It doesn't have to be with a high-precision mic...camera and phone mics can tell us quite a bit about the character of the speakers (like this video from Joseph Crowe, for example).
Yes, sir. I'll borrow Jay's Zoom to record some. It has stereo capsule mics and should give an idea. I'll run a db meter too. Any particular tracks that you like? It may still take a bit to get to that point due to schedule, but I want to get them up and running as soon as I can because I'm dying to hear them jam, myself. Glenn.
There are so many ways to do this, I've drawn an example of one. Cut yourself a trowel out of thin plywood. Laminate some pieces onto the baffle. Backfill them with filler/plaster and rotate the trowel to shape it.
Attachments
There are 4 songs that come to mind, initially:
- Jamiroquai - Space Cowboy
- Jamiroquai - Canned Heat
- Robert Glasper - Afro Blue
- Vulfpeck - Dean Town
They all seem to follow a similar vein in terms of production (70s-style mixing where they're aiming for warmth).
Fingers crossed that your schedule doesn't drive you to insanity!
Fantastic Allen, thanks! For some reason I was thinking that the round-over extended around to the back of the flare (like a Le Cleac'h horn), but I see the concept now - rounding out to the baffle to smooth the transition. Much simpler than what I was thinking!
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My system I use for stereo is is in a 12x17 room that was a computer room then a office with book shelves and file cabinets. Of course there needed to be music so i had a pair of Klipsch KSB 1.1's I bought new online and used my old PL 200 Amp thru a Gemini DJ amp I picked up used.
When I decided to repair my TT I began looking into a Preamp. I was shown a HK Citation 11 which is built like a tank. Multiple In's and outputs. I repaired a pair of Nova 7's and could add a amp so I bought a used HK Citation 12 and went to two amps and four pair of speakers.
Well the bug bit me and I found additional Citation's in various states of need and so I bought em right. I have two sons so why not make two systems.
Shortly after fixing the Nova 7's I found a pair of Boston VR-M50 at a garage sale and they took my offer of $50.00.
Point is within this room these small speakers sound great but none does it all. The Boston's need midrange and the EMI lack good deep base. It's there just not loud at all. Together they sound full no matter which amp i use for what speakers. All the stuff in the room there is no perceivable echo. It sounds like a studio in here. I mostly listen at levels 1/4 to 1/2 volume which reveals any flaws in the recordings. I can go louder but these EMI are only 30-35 watt so no sense in that.
I have another pair of speakers I am working on and the EMI will join the Nova's on a shelf till I get the second system finished.
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Generally, the quotes here and elsewhere seem to suggest that 15 coaxial drivers are favourable, either due to the potential to run them as full-range drivers (or thereabouts), directivity, but also that I've personally enjoyed the 'sound' of 15" drivers more in the past.
It's a good question, though. If the 12" drivers measure somewhat similar (without as much low-end extension), they could be run in conjunction with subs.
I did start thinking about this after Erich replied, but then I also wondered about the Celestion drivers. I'm prepared to change my mind at any time
Erich may have more Vortex-12 drivers listed soon. I’m getting a pair to go with my three Vortex-15 drivers (the 12” vortices are for a friend).
How are you going to cross to a sub at 200Hz? I’m trying to crack this nut with some midbass drivers I have and can’t find a plate amp that will low pass that high. I know there are other options, just curious what you’re thinking.
How are you going to cross to a sub at 200Hz? I’m trying to crack this nut with some midbass drivers I have and can’t find a plate amp that will low pass that high. I know there are other options, just curious what you’re thinking.
Ah, so they're an on-going project? I wonder if he'll list some more Vortex-15s, or if that was a finite project for him.
As for crossing the subs, in the past I've just ran them as the 'bass' part of a multi-way setup on my receiver. If I tried to use the sub channel it only goes up to 160Hz, so I use each sub and stack the rest of the units on top of them. I just make sure that they're correctly placed, and that gives me a clear line of sight for the 'tops'
The whole project was a bust for Erich. He’s getting rid of his inventory of both the Vortex-12 and -15 though I think he’s going to add more of the 12 soon. The 15 may be all sold out though. I know he’s selling these at a loss.
To me its still confusing whats the difference of the Vortex kit and the Eminence Kappalites. The Kappalites are in stock with Parts Express. You just need to choose HF driver. I think PSD2013 is a perfect fit. Eminence even recommend the stock 1,6kHz crossover for this solution. With a variable LPAD that is. 1,6kHz may be a bit high for a 15" though so I have a feeling the 12" would give a more neutral sound with a 1" CD. I think in any case a sub is a good idea. Especially at louder levels where I assume a coax playing full range the sub bass may distort the mids (depending on the music style of course).
Erich did indeed reply and say that the Vortex-15s were all gone, but I asked him how much of a difference he thought there was between that kit and the Vortex-12. He said that there was little difference unless you're looking for more output, and the Vortex-12 could go to 120dB anyway - far more than my ears could handle!
From what I've seen here, the Denovo drivers in the kit have an added flare in the HF channel under the dustcap, which I'd guess improves the HF's path to the woofer cone that's acting as the waveguide.
The cones themselves are a different shape (forming another flare, or at least continuing it for the compression driver), and don't have any ribbing on the cone surface which may interact with high frequencies travelling along the surface of the woofer cone.
I'll still take the look at the Kappalites though. Thanks for the advice - that's a good point regarding the crossover, er, point
Also, the beta(8/10/12)cx drivers seem interesting.
Using coaxial products for DIY monitors and home hi-fi applications
Going from that, it appears that they have a 60 degree conical horn under the dustcap.
In peoples' experience here, are they worth considering? They haven't really been mentioned in this thread, so I was curious why that was
Using coaxial products for DIY monitors and home hi-fi applications
Going from that, it appears that they have a 60 degree conical horn under the dustcap.
In peoples' experience here, are they worth considering? They haven't really been mentioned in this thread, so I was curious why that was