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In Reply to: RE: Should we send a "representative" to Magnepan? posted by emsquare on October 14, 2011 at 21:45:53
That would be like Emerald physic's dipole dynamic speakers with their modified behringer and the custom settings in it.
It works for them.
But we had that early on with the early Tympani models being sold with ARC crossover and amplification.
These days the dealer would be expected to put that together. Or you would need a daft proof product that the user does not need to adjust after the dealer sets it up.
Follow Ups:
Yes it would be a Magnepan version of that. Perhaps more.
I remember the optional 1st order line level attenuators they made for their Tympani's. There is likely a reason they discontinued those. Probably for the same reason that multi-amping speakers is seldom used anymore. Not exactly plug and play and all too easy to damage something from a simple mistake. Not that I would ever do something like that ... as far as anyone knows.
So you are not telling...
DIY audio was not much of a go since 70s when boomers started having kids so today's audiophile is very finicky and when they pay a gazmillion bucks for a "value" audio setup they don't want to learn any acoustics, electronics, or even geometry. And they don't want to spend time tweaking. If they need a tweak it would have to be ham hand proof.
Besides, boomers are not finding it as easy as it used to be to take out the old solder iron and trying to solder wires and components that seem to never find focus in the graduated multifocal glasses.
OK, I will volunteer one boneheaded move that I made ... Like getting the feed to the drivers reversed. I was mortified when I realized that I was driving the ribbon with the mid-bass amp. It didn't hurt anything but there was a bit of pucker factor there for a minute.
I try to observe the double check axion on such things but didn't catch that one.
You are right, of couse, on your observation on the DIY audio culture. Personally I think it is far more interesting than just throwing money at a rig. Once you start getting some insights into the physics of audio it just keeps getting more interesting. I might not be able to build an F5 with the same distortion figures as First Watt but there is something more satisfying in the exercise. Still working on that one. And it is rather annoying that I cannot focus like I once did. I rarely appreciate being near sighted as opposed to far sighted but for populating or altering circuit boards. I find that to be highly relaxing and enjoyable. And surprising that the alterations work more often than not.
BTW, you were right about the OPA(x)134 op-amps. There were better options available.
Not that I haven't done similar errors, but I do try to be careful. First thing is to start everything from the minimum volume setting at the pre. you are likely to figure out what is going wrong before you blew anything.
That is the point, the audiophile has music listening and component listening as his hobby, he does not need to piggyback the DIY hobby and the science/engineering behind audio. Those are separate hobbies that are far more time consuming and don't provide you with more music per hour.
So what did you use instead of the x134 op amps?
"First thing is to start everything from the minimum volume setting at the pre. you are likely to figure out what is going wrong before you blew anything."Yessir. That's how I caught it. I peg the balance control to one side and slowly bring up the volume to the bass driver to verify. I was puzzled for a bit until I realized what was up. I think I will just say that I was preconditioning the ribbon for maximum joy. Ya... That's the ticket!
"That is the point, the audiophile has music listening and component listening as his hobby, he does not need to piggyback the DIY hobby and the science/engineering behind audio. Those are separate hobbies that are far more time consuming and don't provide you with more music per hour."
And this is fine. Not all things are going to appeal to any given audiophile. If it isn't bringing some joy to your life the what's the point? All too easily can I obsess about the system over what I have it for. I gather a number of ideas from comunities like this that would never have occurred to me otherwise. I hold your Neo-8 array as a highly worthy avenue to explore. It just sounds like fun. I was holding out for them to update their Radia drivers and they have introduced the RadiaPro versions. These use the Kaladex material like the Neo's but aren't quite comparable in performance. At least as far as I know.
As far as the opamps... I really like the LM4562 in the buffer stages and am still using the OPA2134's for the filter stages. I prefer this subjectively to using the LM4562 for everything. I have an interest in trying the current source version of that family but am not sure that the circuit is compatible yet. The Marchand has been the most responsive to modification so far of the electronics that I have. Still, that bring a series of 8 opamps per channel into the chain. Not exactly the elegant minimilist answer that I would like but I have to have something for now.
Edits: 10/19/11
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