Leaflock

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  1. In addition to some of the typical ribbon cable problems, which I've alleviated by securing with zip ties as suggested on these forums a while ago, I frequently experience arbitrary changes in output level. This is mostly noticeable with recorded music. I'll have everything set, then suddenly the material gets louder. It proceeds to go back to where it was, then the cycle repeats. This has occured with 2 separate mixing boards, a variety of connectors, and in different venues (and consequently different power supplies). This problem has also been noticed with live sound through a microphone. Any obvious things I should look for, or does the amp need taken in?
  2. I am also very interested to hear what comes of all of this. I run bridged into a 4 ohms and have noticed going straight from -20 to clip (limiter set to -3), although it definitely reads -10 on occasion, so perhaps the peaks are so quick/hot that I just don't notice, or the meters are slower than the signal? The power issue is what I'm really interested in. For the most part, I've been very pleased with my XTi 1000, with the exception being that it seems to clip too suddenly on occasion (see above). As far as gain staging goes, capping the signal at 0 my MAckie 1402VLZ is simply not practical, especially if a band has their own sound guys, but even for myself. The mixer is made to handle signals above that (it doesn't light yellow until +10, red +28. I've found I have the best, least worrisome performance capping output on the mixer meters between +7 and +10, which requires the attenuators on the amp to be near/just past half-way. Much more than that and it will light red way too much. (I am running the inputs mono-sum). I do wish there was a scale on the attenuators so I would have some idea of how much adjusting I am doing. I'm going to hook up System Architect soon and check out how things look in there. Concrete info would be good, though, as I'm hoping to get a pair of subs and an XTi2000 soon, and would probably be using the amp DSP until I can afford an outboard processor. If that'd only bring up more issues, though, I'd naturally refrain and look elsewhere.
  3. I've started noticing this problem on my XTi 1000 recently as well. Ch2 will show a signal when it isn't receiving one.
  4. Or in my case, more speakers and bigger amp for more volume. I have JRX115's that have a peak RMS of 1000watts getting 700w each from my bridged XTi1000, so I don't think any more amp would be too good for them.
  5. This is what I don't understand. I have a Mackie 1402VLZ mixer. I use the XLR-outs on it, which, according to Mackie'specs have a max output of +4dbu. Even just playing a cd, if I had everything at unity gain, the amp would report clipping constantly if I had the attenuators all the way up. During normal use, the clip light flashes occasionally with the limiter set to -3, with the mixer's output meters peaking near +4 dbu, and the knobs just barely over half way. This doesn't make sense to me given your post above. My setup is mics -> mixer -> amp -> speakers... no processors or anything. 3947[/snapback] The confusing thing here is that db is a relative term. Relative in that the term db is always referenced to something. The db on the mixer's meter is referenced to a selected output of "0" were "0" represents the best/optimal output of the mixer. The +/- db markings above and below the meter's "0" tell you how far above or below this optimal output you are driving the mixer. The +4db on the meter would than mean the mixer's output signal is 4db above the optimal 0VU not that it is a +4dbu output. However at the meter's "0" the output of the mixer is a +4dbu output referenced to a voltage across a particular load. So, if you are driving the mixer to +4db by the meters you would be overdriving the input to the amp by at least 4db, not counting the peaks in the signal source the mixer's meter isn't even showing. 3948[/snapback] Thanks! I'll work with this in mind, and be sad my setup is too small for the room I use. :-)
  6. This is what I don't understand. I have a Mackie 1402VLZ mixer. I use the XLR-outs on it, which, according to Mackie'specs have a max output of +4dbu. Even just playing a cd, if I had everything at unity gain, the amp would report clipping constantly if I had the attenuators all the way up. During normal use, the clip light flashes occasionally with the limiter set to -3, with the mixer's output meters peaking near +4 dbu, and the knobs just barely over half way. This doesn't make sense to me given your post above. My setup is mics -> mixer -> amp -> speakers... no processors or anything.
  7. Thanks for the update. I'm glad I've been so pleased with the amp, because I feel like I bought a new computer game rather than a $500 piece of professional equipment, with it being released incomplete and waiting for updates.
  8. You probably already did, but just in case, make sure that you're summing the inputs. ch1+ch2 in the Y options on the front panel. If you lost anything by going mono, that will fix it (just without channel separation, of course.)
  9. I've only used the XTi, so I can't really answer your question, but I'm running it with a Mackie board, through JBL JRX115's. I've mic'd horns, guitars (electric and acoustic), run samplers through it, and done a full range of vocals and it sounds excellent. I've been very pleased.
  10. Get an Xti1000. 500W per channel at 4ohms, plus other fun goodies you can read about on the Crown home page.
  11. What's the impedance of the speaker cabinets? What are there power ratings? Do they have parallel inputs on them so you can daisy chain them?
  12. I'm looking forward to system architect being updated so I can do this to my xti1000. At least I hope I can. I'm very pleased with it so far, but it just doesn't seem as loud or worry free as I think it should be. I'm running it bridged through 2 jrx115's.
  13. You beat me to it! It's too bad they put these on the market without the software updated. Otherwise, it seems like a great amp. I got the 1000. I particularly want the software to make sure I'm locking in the clip limiter right, as I was getting some audible distortion from screaming (think hardcore or Thursday type stuff).