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Junior Varsity
IT8000 Update & Input gain question
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<blockquote data-quote="Tim McCulloch" data-source="post: 23376" data-attributes="member: 67"><p>Re: IT8000 Update & Input gain question</p><p></p><p>I doubt it's an input sensitivity issue, as your previous amp was only about 1 dB more sensitive. I suspect you were making up gain either at the input or outputs of the XR1001.</p><p></p><p>How hard were you driving the desk compared to before? Did you change any drive cabling or other gear?</p><p></p><p>For our VerTec rig, the amp input sensitivity varies between 5.x volts and 6.4v depending on speaker model preset. Since most* of the BEs out there like to see red clippy lights all the fuck over, it works out well. On an analog desk, that mean the VU meter needle is consistently above -4 and frequently hitting the +4 stop. On digital mixers it means we see peaks of -8DBFS, too... but we don't have amp inputs set for 1.4v for FTB, or we'd be buying $700 HF diaphragms and reconing everything else.</p><p></p><p>Based on what we know right now, I'm standing by my guess that your analog crossover was supplying additional gain.</p><p></p><p>Have fun, good luck.</p><p></p><p>Tim Mc</p><p></p><p>* the lone BE who runs his desk "cool" is Frank from Ted Nugent. We brought down system drive levels for the support acts and gave Ready Teddy's show more console headroom, which Frank appreciates and uses to his advantage. Everyone else would have more and brighter red lights if console makers would put them in...</p></blockquote><p></p>
[QUOTE="Tim McCulloch, post: 23376, member: 67"] Re: IT8000 Update & Input gain question I doubt it's an input sensitivity issue, as your previous amp was only about 1 dB more sensitive. I suspect you were making up gain either at the input or outputs of the XR1001. How hard were you driving the desk compared to before? Did you change any drive cabling or other gear? For our VerTec rig, the amp input sensitivity varies between 5.x volts and 6.4v depending on speaker model preset. Since most* of the BEs out there like to see red clippy lights all the fuck over, it works out well. On an analog desk, that mean the VU meter needle is consistently above -4 and frequently hitting the +4 stop. On digital mixers it means we see peaks of -8DBFS, too... but we don't have amp inputs set for 1.4v for FTB, or we'd be buying $700 HF diaphragms and reconing everything else. Based on what we know right now, I'm standing by my guess that your analog crossover was supplying additional gain. Have fun, good luck. Tim Mc * the lone BE who runs his desk "cool" is Frank from Ted Nugent. We brought down system drive levels for the support acts and gave Ready Teddy's show more console headroom, which Frank appreciates and uses to his advantage. Everyone else would have more and brighter red lights if console makers would put them in... [/QUOTE]
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IT8000 Update & Input gain question
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