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About manderson1965

  1. Hi All, I've been going round 'n round with others on what speaker cable AWG is best to use on FOH mains and stage monitors. I've been doing some research in this area, and it seems there are some very divisive schools of thought on the subject. A few I've heard from seem to think that 16 AWG is fine for most all speaker applications (except for really long lengths 50ft +), but others have said that 12AWG copper speaker cabling is probably the best way to connect speakers at any length FOH. Drawback is though, 12AWG cables are more expensive than 14 or 16AWG cables. In my opinion, 16AWG cables are fine for stage monitoring up to 25', and 14 AWG for runs of up to 50' on stage, but I don't feel comfortable using that gauge FOH. With what you guys (or gals) know about Speaker Cabling for a PA system (one which is club size now, but is expected to grow over the next few years), what gauge cables do you feel would be the best investment in the future for FOH usage? I've already invested in all 12AWG cables for my FOH set-up as it stands now, but I plan on adding more JBL speaker cabs and Crown amps (with more power) to my system in the next couple of years. Am I being overly cautious, unnecessarily spending too much money, thinking I have to go all the way with 12AWG cabling?
  2. normally an amp in bridge uses one input, channel one, and the speakers must be attached to the back with the +wire to your speakers attached to the red terminal on channel one and the -- (neg wire) connected to the red terminal of channel 2. This is because when you engage the bridge switch, channel 2 is now out of polarity with channel 1. No I have not let the smoke out of one, but I would not even try to exceed the recommended settings, chicken I guess I dont think it is a gray area based on the specs I see, it may work for a while but it may blow right away. I would not recommend doing it. Yes I think you would be much happier with a "larger" amp. There have been some old micro techs on the web for CHEAP!!! While they are heavy and eat some power, you can just about weld with them, If set up correctly they will run a 1 ohm load !! Seems like great advice! I really don't expect that this amp is a good choice for attempting to run in bridge mono, in a pinch maybe. I would have been better off spending a little more $$$ purchasing a third XTI instead of the XLS. I really like the DSP features in the XTI's. I'll end up using the XLS as a standby amp for my stage monitors. Also, I realized after I initially posted that I had downloaded the wrong version of the XLS user manual for the model I own. After further investigation, comparing my unit to what's advertised on the Crown website, it appears I do own the latest model XLS 402. What is puzzling is that it mentions a "mode switch" that must be engaged when operating in bridge mode. Where is this mode switch located on the amp? I don't see it. Maybe it's only on the 5000?
  3. One more note: I was looking in the .pdf user's manual for the XLS 402D (dated 2004), and under the specs it does read bridge mono at 4 ohms is 1,450 watts. I remember earlier tonight, I checked the manual's specs from Crown's website, and it read bridge mono at 4 ohms - - - (not rated). I think this is odd?
  4. I suspected the first response would be this. Why is it then, that the specs for bridging this amp at 4 ohms are different for those units sold overseas (not here in the U.S)? Were those units that were exported built to different specs? Is it your experience that smoke has come out of this amp while attempting to bridge to a 4 ohm load? I would be quick to agree if you said this is a gray area, and I'd be gambling with the outcome. Also, I read the manual, and in the bridged mono section it states that the levels on both channels must be turned up equally for this amp to work properly in this mode (not just ch 1). And that the polarities at each input must be inverted. Am I correct here? Sounds like great advice, I was thinking along these lines. If I want to go to five or six monitors, then I suppose I'll either have to get a more powerful amp, or get another XLS 402. Thanks.
  5. I purchased a new XLS 402D earlier this year, just before the roll out of the newest XLS series, for DJ and KJ work. Would it be acceptable to use it to drive a couple of JBL MRX 515's in bridge mono? I know that it had been taken off the list for bridge specs, due to certification issues. If I were to set ch 1 and ch 2 levels at between 50-60% (max), do you think I could run it OK for a few hours in BM? I orginally purchased the XLS 402D to drive my JBL JRX 100 stage monitors, but am hoping to use it to drive my mains for small DJ and KJ gigs. I've got an XTI 1000 and 2000 in another rack, but was hoping to use the XLS in my monitor rack (less weight and smaller) for these smaller shows. I'm thinking that I should rearrange my racks to include one of my XTI's to use with my MRX's, but I am curious nonetheless? Also, when using the XLS 402D to drive my monitors, what is the max number of JBL JRX 100's (12" 2-way) I could safely feed from just the one amp? How would you suggest I run the cables to each?