Recent content by Lambda

I had thought this thread was dead and buried. No, I never built the system, it did not get approved by the department (and at this point I'm no longer even affiliated with that facility). With my design you'll be able to use the LEDs and cat5 and daisy-chain the boxes like you describe, just...

I highly recomend multiplay, I've used it for years. About cue numbering, I know it has a "renumber cues" feature. When you delete a cue, the numbering of the others does not change unless you use this feature to restore sequential numbering. Or you can change any cue's number manually. I've...

Now the real question is, was the capacitor defective, or did some other problem cause it to be pushed way past its safe operating voltage?

A higher wattage lamp consumes more current, and therefore has a lower resistance. A lower wattage lamp would have higher resistance since it consumes less current. Inserting a higher-resistance load into a series circuit will increase the resistance of the whole circuit. Therefore, less current...

If you're going to be connecting/disconnecting often, a self-contained plug like the speakon or TS would be ideal. My vote is for speakon, it's locking, durable, and can't confused with signal like TS can. What... Really? That's just... wow.

We use two Comets in our theater. They've worked OK for us, but one complaint I have is that the tracking isn't always smooth (on ours, at least). You can move it smooth a few degrees in either direction, and then encounter a great deal more resistance which makes for a noticeably bumpy movement...

I can tell you two things to watch out for, because they are two things that were done wrong in our theater. Placement of ducts, for one. The way our HVAC system is installed, a meter-square duct runs right through the middle of the flyspace, rendering that entire area unusable in terms of...

I don't think there's any insulation to speak of. I think it's (from bottom up) just the concrete, then tar, then crushed stone.

I suspect the roof. I've not been up there proper myself, but I've looked out at it when inspecting the smoke hatches (that's another one of my threads), and it looks like the drainpipe hole is actually a couple inches raised from the level of the roof. Which would cause water to accumulate up...

So the principal had somebody from a construction company come today to look at it. He said it was indeed spalling, caused by a combination of rusting rebar and the rebar having been put too close to the bottom of the form in that spot during construction. He does not believe there is any risk...

Today I spoke with the principal, showing pictures of the damage and general information about concrete spalling. He's ordered the stage upstage of the main curtain blocked off until an engineer comes and assesses the ceiling. Tonight's talent show was re-structured a little bit so that no acts...

Is it possible to set up a raceway (like used for LAN cables) on the ceiling or wall?

Well, I'd definitely cordon off the stage if I had the authority to. I do not. I'm not willing to incur the wrath of the administration by getting the media involved, that's just crazy, and might cause there to be some "problems" with my graduation. What I am going to do is talk to the...

It's a relief to know that the whole building isn't about to fall down. So all that needs to be done, according to that pdf, is to remove the loose concrete, coat the steel with anti-corrosion coating, and apply mortar over that area?

The fixture thing was but an ironic joke, of course. We can always replace a fixture -- but not a person. I'd like to keep people off the stage, but we have a talent show tomorrow, and a music concert next week. Neither the student council nor the music director is going to cancel either of...