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Junior Varsity
IT8000 Update & Input gain question
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<blockquote data-quote="Vinny D&#039;Agostino" data-source="post: 23628" data-attributes="member: 112"><p>Re: IT8000 Update & Input gain question</p><p></p><p>Okay, I had a chance to play around a little bit tonight and I think I am getting closer......I think </p><p></p><p>I ended up changing the input sensitivity to: 2.8v</p><p>The Input gain stayed at 33.3 db</p><p>The Input range also stayed at +15dbu</p><p>(the Gain & Range are defaulted to there at that input sensitivity that I selected, they can be changed but I figured that amplifier is smarter then me at this point!)</p><p></p><p>With this change I can get the MixWiz output meters to hit the second yellow LED which is +6db without making the input clip, a little more output from the MixWiz and it would slightly hit the input peak/clip indicator.</p><p>I will normally hit the +6 LED on the MW when I am mixing a live band.</p><p>So to me this setting seems like I am close to were I want to be.....</p><p></p><p>I then had to change the Bandpass gain on the channel outputs of the IT8000.</p><p>On channel 1 running the subs I ended up with +9db</p><p>On Channel 2 running the tops I ended up with +3db</p><p>With these settings if I cranked up the MixWiz with my Ipod so that I was hitting the +6db level I would see some output *limiting* (not clipping) on Channel 1 (it was around -5db it was limiting)</p><p>Channel 2 would not get into the limiters or clip</p><p></p><p>I have the RMS limiters on channel 1 (subs) set to: 3600w @ 2ohms (1800w per cab, which is 1.5x there continuous rating)</p><p>The RMS limiters on channel 2 (tops) are set to: 3000w @ 4ohms (1500w per cab, 1.5x there continuous rating)</p><p></p><p>I also changed the crossover slope to -24db/Butterworth @ 80hz.</p><p>Electrovoice had emailed me and suggested -24db/LR @ 80hz but when I listened to the subs I prefered the BW filter, the subs had more output and hit much better.</p><p></p><p>I only actually connected the speakers for a quick listen as running the rig that hot in my basement causes too many things to vibrate off walls & shelves </p><p>So most of this testing was done just looking at meters and my laptop running System Arcitect.</p><p>I won't actually have a chance to use this rig live until the beggining of next month, so for now I think I will leave it as is until I get a chance to hear it out in the real world.</p><p></p><p>Thanks again,</p><p>Vinny</p></blockquote><p></p>
[QUOTE="Vinny D'Agostino, post: 23628, member: 112"] Re: IT8000 Update & Input gain question Okay, I had a chance to play around a little bit tonight and I think I am getting closer......I think I ended up changing the input sensitivity to: 2.8v The Input gain stayed at 33.3 db The Input range also stayed at +15dbu (the Gain & Range are defaulted to there at that input sensitivity that I selected, they can be changed but I figured that amplifier is smarter then me at this point!) With this change I can get the MixWiz output meters to hit the second yellow LED which is +6db without making the input clip, a little more output from the MixWiz and it would slightly hit the input peak/clip indicator. I will normally hit the +6 LED on the MW when I am mixing a live band. So to me this setting seems like I am close to were I want to be..... I then had to change the Bandpass gain on the channel outputs of the IT8000. On channel 1 running the subs I ended up with +9db On Channel 2 running the tops I ended up with +3db With these settings if I cranked up the MixWiz with my Ipod so that I was hitting the +6db level I would see some output *limiting* (not clipping) on Channel 1 (it was around -5db it was limiting) Channel 2 would not get into the limiters or clip I have the RMS limiters on channel 1 (subs) set to: 3600w @ 2ohms (1800w per cab, which is 1.5x there continuous rating) The RMS limiters on channel 2 (tops) are set to: 3000w @ 4ohms (1500w per cab, 1.5x there continuous rating) I also changed the crossover slope to -24db/Butterworth @ 80hz. Electrovoice had emailed me and suggested -24db/LR @ 80hz but when I listened to the subs I prefered the BW filter, the subs had more output and hit much better. I only actually connected the speakers for a quick listen as running the rig that hot in my basement causes too many things to vibrate off walls & shelves So most of this testing was done just looking at meters and my laptop running System Arcitect. I won't actually have a chance to use this rig live until the beggining of next month, so for now I think I will leave it as is until I get a chance to hear it out in the real world. Thanks again, Vinny [/QUOTE]
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IT8000 Update & Input gain question
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