Chris Coleman 2 wrote on Mon, 06 March 2006 14:55 |
1) Has anyone here ever made an "active" version of this LAB sub or the Tuba sub ?? This way you could eliminate separate amp racks, add only about 50 pounds to each sub, and simplify your cabling runs by turning it into an active sub, fed with a simple balanced xlr subwoofer signal direct from your driverack or other crossover. What power amp did you mount inside the sub ?? |
Chris Coleman 2 wrote on Mon, 06 March 2006 15:53 |
Mac good point. Couldn't you combine things a bit so that you have each "stack" being fed by (for example) : 1) One thick 60 amp AC power feed.. split up into four 15 Amp circuits.. four subs + four tops per stack, one 15 Amp circuit per sub + top. 2) 0ne subwoofer signal on a balanced xlr.. goes to the subs and is "daisy chains" from one sub to the next. 3) One midrange + 4) ... one tweeter signal. On balanced xlr's.. goes to the tops which have one two-channel amp per box. Daisy chain from box to box in the stack. Chris |
Randy Pence wrote on Mon, 06 March 2006 16:01 |
A lot of meyer users use cable that carries both power and signal in one bundle. Sending both changes things, but there are enough active speakers out there that its not impossible. |
Chris Coleman 2 wrote on Sun, 12 March 2006 18:58 |
Ivan: yeah it said under a half millisecond of latency in the speakerpower dsp, which should make no difference to the sound but you can compensate for it with an external processor by delaying the tops. Don't they have an easy interface for adjusting the dsp programming ?? I guess Behringer is better than them, then! |
Quote: |
Craig: do you think an active tuba would be more of a hot item than an active lab ? |
Mac Kerr wrote on Sun, 12 March 2006 18:36 | ||||||
So Ivan, you've actually used these things, and you're usually on top of specs that don't meet spec, do you have any idea how they get the latency down to 460 Post by: Ivan Beaver on March 12, 2006, 07:56:21 PM Post by: Mac Kerr on March 12, 2006, 08:06:23 PM
Post by: Chris Coleman 2 on March 12, 2006, 08:37:11 PM
Antone: Good point.. so 1000w makes about 11% more voltage than 800w. Is excursion linearly related to voltage.. or to the square root or log of voltage ?? Post by: Antone Atmarama Bajor on March 12, 2006, 11:35:19 PM Ever wonder where that 2.8xx VRMS @ 1 meter comes from. Its supposed to represent 1 W at 1 meter @ 8ohms but a lot of companies try to spec a lower Z driver with the same voltage level to try and pass it off as being more efficient. Antone- Post by: Magnus "Magic" Johansson on March 23, 2006, 08:07:03 AM
This should about do it : 2000W into 4 ohms http://www.cadaudio.dk/pwmaudio_en.htm |