Log in
Register
Home
Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Pro Audio
Varsity
Power Feeder and Voltage Drop
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Art Welter" data-source="post: 97862" data-attributes="member: 52"><p>Re: Power Feeder and Voltage Drop</p><p></p><p></p><p>Chris,</p><p></p><p>Voltage drop occurs rapidly on kick hits, a VOM may not register it. Plug a light into your amp rack power, if you notice it dims on kick/snare hits, your amps are starved on peaks.</p><p></p><p>If you look at the i-T6000 Current Draw, notice that although the average 1/8th power is 11.6 amps, divide 6000 watts by 65.7, the "watts out Per 1A line current" and the answer is 91.3 amps for <em>each</em> amplifier.</p><p>On the mids and highs, the amp's power supply capacitors can "smooth over" that peak draw, but the duration of a 40 Hz wavelength can be enough to need to pull that 80-90 amps for some portion of the peak. </p><p>Breakers can take as much as 10 times their rated ampacity before opening on peaks, as long as the average power is OK, they won't pop.</p><p></p><p>I have measured 6 dB less LF output in "brownout", and considering the 8000 and 9000 draw even more peak power than the i-T6000, it seems likely that the voltage was dropping a lot more than you measured.</p></blockquote><p></p>
[QUOTE="Art Welter, post: 97862, member: 52"] Re: Power Feeder and Voltage Drop Chris, Voltage drop occurs rapidly on kick hits, a VOM may not register it. Plug a light into your amp rack power, if you notice it dims on kick/snare hits, your amps are starved on peaks. If you look at the i-T6000 Current Draw, notice that although the average 1/8th power is 11.6 amps, divide 6000 watts by 65.7, the "watts out Per 1A line current" and the answer is 91.3 amps for [I]each[/I] amplifier. On the mids and highs, the amp's power supply capacitors can "smooth over" that peak draw, but the duration of a 40 Hz wavelength can be enough to need to pull that 80-90 amps for some portion of the peak. Breakers can take as much as 10 times their rated ampacity before opening on peaks, as long as the average power is OK, they won't pop. I have measured 6 dB less LF output in "brownout", and considering the 8000 and 9000 draw even more peak power than the i-T6000, it seems likely that the voltage was dropping a lot more than you measured. [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Pro Audio
Varsity
Power Feeder and Voltage Drop
Top
Bottom
Sign-up
or
log in
to join the discussion today!