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Old 29th September 2001, 04:47 AM   #31
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I seem to recall muttering dire warnings elsewhere about what happens to those who inquire too closely into the secrets of the Mothers Guild Braiding Patterns...
You were warned.

Grey
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Old 29th September 2001, 03:53 PM   #32
Super is offline Super  United States
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I guess it is the inductance and fuller midrange I seek, Master. Perhaps when the Meridian monoblocks and I cross paths, I can continue on my journey.
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Old 30th September 2001, 02:50 AM   #33
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Master Po: Ahh, Grasshopper, when you can snatch the capacitor from my hand...you will have learned.
Ahem.
Sorry. That was paraphrased from a TV show way back when.
Amplifiers vary in their ability to handle reactive loads. Once upon a time, Polk came out with some cables that tended to cause certain amplifiers to emit smoke, make gargling noises, and roll over with all four paws in the air. They were, needless to say, braided cables. I watched all this and shook my head. There's no reason to put up with that much capacitance (or inductance, for that matter) in a cable. A cable with that much reactance in it is breaking the basic rule that a cable should be an invisible conductor. Any deviation from that...well there's a technical term for that kind of device:
Tone controls.
If it makes your speakers sound better, then consider carefully what the differences are, and seek speakers that sound that way, rather than use the cables to alter the tonal balance of your speakers.
Confucious: A journey of a thousand miles begins with but a single step.
Obi Wan: Congratulations, you've just taken your first step into a wider world.

...and the cloaked one turned from the door, pulled up his hood against the chill of the night air, and silently passed into the darkness...

Grey
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Old 30th September 2001, 11:10 PM   #34
Super is offline Super  United States
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"Master", a small voice cries out from a distance, "You know so much of your student, but your students know so little of you. What cables, amps, and speakers do you use for faithful reproduction of the musical force? Do you follow a simplistic journey, or is it comprised of snake oil, fairy dust, voltage regulators, and too much silver to account for?..."
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Old 1st October 2001, 12:52 AM   #35
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...It is too late for me, my son...
Darth Vader

Aye, well, snake oil, of course, and far, far too many pieces of silver over the years. (Man, I wish I had some of that money back...)
I don't think Jason had instituted the Intro part of the forums when I joined up, and I never got around to doing the deed afterwards. There is some stuff in the little Profile dingus.
As for my system, it's both simple and complicated. I've long believed that simple circuits are more likely to deliver good sound (after a rather substantial, lengthy, and expensive foray into complicated circuits, getting further and further from what I heard at the concert hall, but I--finally--learned that numbers don't count for much), so the individual units tend to be fairly straight forward, but there are so *many* of the little critters that the sum of them all gets a little crazy.
For the front end and electronics, try the Class A, AB or what thread about half way down the page: Class A, AB or what?....
Speakers were detailed in the 5W Zen for biamp tweeter thread:
5W Zen for biamp tweeter
Since then the water-cooled Aleph 2s have come online (another pair nearly ready), which currently leaves my tube amp pushing the tweeters, Aleph 2 on the mids, Threshold S-500 on woofer panels, and another Threshold S-500 on the subs.
I've got a tube phono stage in the works; spent this weekend assembling two voltage regulators to go with that. The SOZ w/embellishments that I'm reporting on in a dedicated thread elsewhere on this site. Amps and sundry support things to incorporate the subwoofer drivers within the feedback loop. Several possibilities for a new line stage. And, as if that wasn't enough to keep a fellow busy, I've got a number of things I want to do, speaker-wise--not for the big system, but to use up some nice drivers I've got lying around, and possibly test some whacky ideas I've had over the years.
In addition, I try to find time to write stories, go to work, and sleep, perchance to dream...

Grey
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Old 1st October 2001, 01:27 AM   #36
Super is offline Super  United States
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12, 12" drivers... all I have to say about that is... I love it . But I was having trouble convincing the parents with a single sub. Now what are they going to think?! (On a positive note, my father who doubted my subwoofer building capabilites is now eating his words. The rocket launcher scene in "Ronin" awoke him from a sound sleep...)

As for the quad-amping, well, the best I can get away with right now is bi-amping, and I'll have to see how that goes. Depending on how these Meridian monoblocks turn out, I may be able to scale down my "need" for a 30 watt SOZ, which would likely have the designation driving the tweets.

But now, its time for more questions. It's just dawned on me, that when the monoblocks arrive, I will be in need of a Y-cable, since my preamp only has a single set of RCA outputs, which is currently being occupied by the subwoofer. Any suggestions as to how I should construct it? Should there be any problems if I connect 2 conductors instead of 1 to the ground and center pin of the RCA plug? Thanks again.

(I'm thinking of a multi-strand braid using individually insulated, teflon-coated copper wires of approximately 24 ga each, similar to some Kimber interconnects)



[Edited by Super on 09-30-2001 at 09:12 PM]
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Old 1st October 2001, 02:23 AM   #37
paulb is offline paulb  Canada
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Nice going, Grey, you've Turned another one.
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Old 1st October 2001, 03:18 AM   #38
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Paul,
Yes, but the question is: To the Light side or the Dark side?
I see my function as being to feed dreams. In the process of bringing dreams to fruition, learning will occur, whether desired or not.
Acquisition of knowledge is a noble thing.
(And if I can make folks giggle once in a long while, that's no bad thing...especially in these trying times.)
Bryan,
Of a certainty, you can use Y cables, but...
Consider the input impedance of the two amps in question. That input impedance will be in parallel, hence lowering the load seen at the output jacks. Some preamp sections may grow weak in the knees upon seeing such a low impedance. Others will laugh and drive it easily.
Let's assume for the nonce that you'll be able to use a Y cable. Let me know if it clips. (Yes, preamps can clip.) Should that happen, we'll go into cathode/source/emitter followers in order to put some muscle into the thing. (Or you can start working on your Dad for funds for a new preamp project, and we'll just keep this little conversation our secret, okay?) As for the mechanics--yes, two hots to the center and two shields to ground.
This is, in part, why I grafted the input network from the Volksamps onto the Aleph 2s I built. No, I'm not running a Y coming out of the back of my crossover, but you never know what will happen in the future and it's a booger to retrofit something like that down the road.
And...yes...twelve 12" drivers can move air in a manner wonderful to behold. There's a record of organ music where the organist holds a low pedal note. That alone is enough to produce religious ecstacies in some. However, the note travels the length of the cathedral, reflects, comes back to the microphone position in proper phase to augment the original note. Okay, we are now approaching orgiastic levels of pleasure, but we're not done yet. The microphone they chose was possessed of a bump in the response right in that same frequency range. All this is gleefully noted in the liner notes for the album, as they discovered it after the fact, and decided to leave it as a delight for those who have sufficient low frequency capability to display it to best effect.
All I can say is...it's a good way to remove dust from your speaker cones.

Grey

[Edited by GRollins on 09-30-2001 at 10:21 PM]
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Old 1st October 2001, 03:44 PM   #39
paulb is offline paulb  Canada
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Light, dark, who's keeping track?
Sidebar question: have you published any of your fiction? Could it be under a (gasp) pseudonym?
MTFBWY,
Paul
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Old 5th October 2001, 05:28 AM   #40
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Paul,
I've been writing science fiction for over ten years now. My first story saw print back in '89, I think, and I'm up around 30 stories or so. I write under my own name--I get addled enough trying to remember all my user IDs and such for work, so the last thing I need is yet another name to keep up with. So far I've written shorts, novelettes, and novellas, as that's what fits best into my schedule. Recently, I've begun making an effort to broaden out from science fiction; I had an article on how to brew mead in the December 2000 issue of Bee Culture. Recently, I've been spending so much time on electronics and prattling on and on about same on a certain DIY site (ahem) that it pretty much keeps the fiction aspect of my life at bay. I need to take some time and finish a few stories so as to make some spare change. Perhaps I can figure out an angle where audio would fit into a story...

Grey

P.S.: You lost me on the MTFBWY. When I first glanced at it, I thought you'd meant Mean Time Between Failure, and took it to mean that you were anticipating a breakdown of some sort. Sorry, I haven't kept up with all the acronyms. It's as much as I can do to write longhand.

[Edited by GRollins on 10-05-2001 at 12:31 AM]
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