Sealed monitors, group delay/time domain?

  • Thread starter Thread starter xyrium
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darrin_h2000 said:
$3000 is pretty impractical for most levels of recording engineers south of the bigger commercial studios...what materials are going into them?
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You hafta remember these are "no holds barred," state of the art monitors. Power amp distortion is typically 0.05%!! And there are 3 power amps in each box. I didn't even think about the price until after they were built. I learned a valuable lesson during my 8 years at JBL: "There's always room at the top!" You must also remember that while I do a lot of posting here in HomeRecording, my background is mainly in professional studio work.

I do have plans for lower cost monitors that will be great for smaller studios - and I'll possibly do some mastering speakers.

As for how I designed them, you'll hafta wait till they're unveiled at AES nest week.
 
I guess Ill have to wait for Behringer to backward engineer them to get a pair.:p
 
They had better...I just emailed this thread to Ho Chi Min himself.
 
Harvey Gerst said:
I think I've found a solution, but I'll let the engineers at AES tell me if I finally got it right.
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Ummm, come on Harvey!!! Share the secrets!!! Ok, ok, we'l wait until you return, and patent it, etc. However, if it resolves the group delay issues associated with vented designs, I'll pay!!!
 
xyrium said:
Ummm, come on Harvey!!! Share the secrets!!! Ok, ok, we'll wait until you return, and patent it, etc. However, if it resolves the group delay issues associated with vented designs, I'll pay!!!
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One of the problem with ported designs is that the speaker is essentially unloaded below the port tuning, resulting in sloppy bass response.
 
SouthSIDE Glen said:
So, yeah, if you're into speaker building as a vocation or avocation, then it's great to talk about design. But, IME/IMHO, when it comes to selecting a speaker on which to actually do your own personal listening or mixing, forget about the design and let your ears be your guide.
G.
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Answers to my inquiry puts me in the balpark of what i want to hear from monitors. I expect that a specific design characteristic will yield certain results, and emit certain flaws as well. It narrows the list of contenders, then I go and listen.

If I am in the market for a car that's fast, I start looking at cars designed for horsepower and torque. Meanwhile, those same cars will probably not be very comfortable to do long hauls in, or carry my gear. So, again, I start looking at Porsche, Ferrari, etc...with that in mind, instead of looking at every single automotive brand out there. That's the point in seeking specific design characteristics, because they provide you with the basis for the results you'd like to achieve.

I'm only a hobbyist here, so I'm certain that you guys know far more than me. However, I'm confident that every engineer worth his salt has several monitors, because each has strengths and weaknesses, some of which cannot be compensated for by ear, because some of the results are masked by the monitor desiign (compromise), so you don't even know that the effects exist, thus your recording ends up missing that certain something. You hear it when guys get it right, the timing is seemingly perfect. Who knows, I'm probably searching for something that will never exist, based on my own subjective needs.
 
Here's an article on improving group delay for ported speakers, if you haven't seen it:

http://www.geocities.com/cc00541/group_delay.html

have you ever tried any speakers with TL enclosures... PCM?
I've built a few but was never satisfied, though I never really put that much effort into them.

as far as my designs they just take the best aspects of all the speakers I've heard over the years chose the compromises I deemed acceptable and refined, refined the best, some of the technology wasn't around till a few years ago. I'm in the final phases of cnc'ing the front baffle molds now, don't know if I'll offer a kit or a built system.
Oh, they are mastering speakers by the way.
 
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ds21 said:
Here's an article on improving group delay for ported speakers, if you haven't seen it:

http://www.geocities.com/cc00541/group_delay.html

have you ever tried any speakers with TL enclosures... PCM?
I've built a few but was never satisfied, though I never really put that much effort into them.

as far as my designs they just take the best aspects of all the speakers I've heard over the years chose the compromises I deemed acceptable and refined, refined the best, some of the technology wasn't around till a few years ago. I'm in the final phases of cnc'ing the front baffle molds now, don't know if I'll offer a kit or a built system.
Oh, they are mastering speakers by the way.
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Ahh, nice article. I suppose lower tuning rectifies some of the issues. Thanks!

Yes, I believe I've heard one or two TLs in my time. About 10-15 years ago I was auditioning passive speakers, some Frieds and Thiels. I believe they were both transmission line models. I remember them sounding fantastic on everything we threw at them, but so did many of the other contenders.

It must be nice to have access to a CNC machine. My friend's brother does cabinetry, and guitars. I've seen some of the stuff he does with that thing. Once it's programmed, it's astounding. I'd love to see where you're heading with your latest idea though. Are you using active xovers?
 
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