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Post by ThomasW on Jul 22, 2006 7:38:13 GMT -7
I have my amp up full but I had to cut back the input signal from my receiver 2db to equal the output from my mains. Wrong? Nope right.... The Dolby or DTS people think everyone in the world is so stupid they're unable to tell whether or not their audio system is balanced. So they created a standard for setting the levels of the channels. Now that would be great if all movies were actually set to those levels, BUT.... they aren't. So the smart user ignores the concept of calibration and sets the output levels to what sounds best in their system...
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Post by ThomasW on Jul 22, 2006 8:30:35 GMT -7
Thanks for all the advice and encouragement, gentlemen. The improvement in performance from the IB is dramatic! Really night and day at higher volume levels. No time to try many favourites with music or film yet but it sounds even tighter and cleaner than before on the stuff I have listened to. If I turn it up any higher, Thomas, they'll need two buckets and shovel to clean up the mess! Good news.... Now perhaps you could tell people your IB is not " My Compromised IB"? ...
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Post by chrisbee on Jul 23, 2006 0:59:18 GMT -7
Dear St.Thomas I thought I should write a piece here first since this is the fount of all knowledge regarding the black art of Truly Infinite Enbafflement. As a junior initiate I am still hardly worthy of the great task of diplomacy and TIB evangelism in other places. Nevertheless, with much trepidation and hesitation, I have scribbled a further missive, in my own fair hand, to be read out on the Shack forum. It is probably no more understandable than my many other desperate attempts to adequately describe the unique sound quality of a TIB using only words found in The Oxford Concise. This nearly-impossible task still defeats me but I feel I am making some slight progress. I remain your most obedient servant, Sir. Yours... etc.etc. PS: Bridged mono rules, okay?
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Post by chrisbee on Jul 23, 2006 1:04:25 GMT -7
Never a truer word spoke.
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Post by ThomasW on Jul 23, 2006 8:18:26 GMT -7
Well I'm glad we were finally able to get this straighten out... And now officially welcome you as a full fledged member of the "Cult" .......
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Post by eeyore on Aug 1, 2006 8:12:03 GMT -7
I received my second Behringer EP1500 yesterday. In good condition, thanks Darren. It took some time to get bridged mono to work because Behringer messed up the labeling on the dip switches in back. After some research and playing I got everything working. I only have the amps turned up to 27 (high is 32) because full up would be 700watts per driver. It wouldn't be wise to turn them all of the way up would it? So far I can say that the IB sounds "fuller." The whole system actually. I'll do some more playing around in the weeks to come. I'm really hoping that this cures me of wanting more drivers. I have a huge null at 78 hz that I have eq'd out but I may play with a 60hz crossover instead. My mains are only rated at 38hz so I am a bit apprehensive about going lower than 80. My Center, despite being timbre matched to my mains, is only rated at 75hz so I will have to use global bass management and assign the center channel 80hz. I have homework to do today so I probably won't have time to play with REqW.
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Post by Darren on Aug 1, 2006 11:31:32 GMT -7
Glad your amp arrived safe and sound!
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ryans
Full Member
Posts: 132
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Post by ryans on Aug 1, 2006 19:46:14 GMT -7
Turning it "down to 27" does not guarantee that you will use less than 700 watts. In fact you could certainly clip the amp at this setting. The control is just a gain control. And its one of many gain controls (receiver volume level, subwoofer calibration level, etc.) that determine how much signal your amp actually outputs. The audio signal you're playing was recorded at a certain volume level. As it goes through your processing/amplification path it gets multiplied by all of the various gain settings before being output by the amplifier.
So you see, running it wide open does not always get you 700 watts. And running if half open does not always limit you to 350 watts. There's no "safe" setting. Many pro amps have a clip limiter that will prevent clipping. But if your woofers can't take the amp's full power then you'll have to rely on common sense to run at reasonable levels and turn it down if you hear bad noises.
If you think the null at 78Hz may be caused by a phase problem between your sub and your mains, why not try flipping the sub phase to see if the problem goes away?
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Post by eeyore on Aug 2, 2006 3:30:38 GMT -7
Thanks for the reply ryans.
I will be working six straight twelve hour days with lots of homework this week so I won't be able to play until next week but I will take your advice.
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