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In the Forum: Horn-Loaded Speakers
In the Thread: Jessie Dazzle Project
Post Subject: Life at speaker-level (+ Photos)Posted by jessie.dazzle on: 7/16/2008
Quotes from Romy in blue:
"...Anyhow, I do not know at which stage your project is what I think you are somewhere in a process of integrating the drivers..."
I would like to stabilize the system, and listen to the existing horns, while starting work on the mid-bass horns. Why the rush? Simple: Summer is here and I need to get the fiberglass and resin going now, otherwise I'll be freezing my butt off with the windows open this winter (can't afford to breath any more toxic fumes!).
For the past couple of weeks, I've been working with crossovers, as well as some final details (like replacing the bits of scrap wire I've been using between drivers, with new wire).
"...Do not forget that any audio project is a wonderful opportunity to buy another set of stupid audio tools – your case is not an exception..."
Man I'm right there with you on that one... On top of that, I have a major weakness for well-made boat anchors! One day I will post a photo of all my stupid audio tools...
I like the idea of the Poineer crossover... Regarding digital units; just looking at the face plate on the one from Behringer scares me (perfectly intuitive for someone "from the other side", which means it would take me two weeks to understand), but it is surely a very capable unit. It is no accident that I live right next to a shop selling really nice coils, and pretty decent caps; I don't mind the work of swapping components... It was just difficult to get things to move in the right direction with mic placed in the listening position.
"...when you use the crossover prototyping tools you do not listening the actual sound of channel. Instead you practice the target listening – try to hear exactly what you need. I found it is self-educational..."
I'll keep this in mind.
"...Still, the fixed coils and caps might do – you can always parallel of serialize them…"
Yes, I have been.
If I were you I would not think at this point about DSET. The DSET has own complexities and before trying to assess those complexities you need to have a references how your acoustic system shell perform before it will be enriched or screwed by DSET. Your Lamm ML2.0 shall do wonderful job to drive your thing…
I am not for the moment thinking about DSET amps for myself, but looking at the RTA curves and trying to get what I want from the various drivers does tend to underline the advantages of this aproach. For example, killing the output from my upper-bass horn above 700Hz... Every time I stick a coil on the driver (any of the drivers I've tried in that horn), I end up pulling it back off let it go full-range.
Back in your "full-range amp/speaker-level crossover days", you wrote that a coil used with the upper-bass horn, tends to "talk" with the S2s... In my case, I don't know if this is what's happening... Need to do some target listening. I keep telling myself that I MUST use a coil with this horn... I mean, I have a lower-mid horn etc... But the system just sounds better with the upper-bass horns running full range.
In any case, again, I'd like to get the existing system to a stable state... Sort of a foundation to which I can add the mid-bass horns.
BTW, here are some photos showing one frame loaded with horns and drivers :
There is space, and the frames are strong enough to support an additional load, but for the moment, I don't imagine adding anything.
jd*
PS : I will most likely be going with a hyperbolic/exponential profile for the mid-bass horns... Anyone know of a good Hypex profile generator? Also, yes, I've sort of started to admit that rectangular horns are probably the way to go... Believe it or not, they will be more difficult and require more tooling than round horns. No matter, they offer the advantage of preserving access the kitchen.
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