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What is gain?

post #1 of 10
Thread Starter 
On my dayton-100 sub

a switch and a knob on the back
the knob says gain (idk what that is)
the switch says REV and NOR (phase above the two)


can someone explain what these are? i dont have a real understanding
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Spaghett
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post #2 of 10
I don't know what REV or NOR are, but gain (in general) is very much like a volume knob.

On a mixing board, there's usually a gain knob in addition to the Level fader (or a level knob on smaller mixers). In an ideal world, the level is set to 0 (meaning, it's in the center between completely off and all the way up), and then the actual volume level is adjusted by turning the gain up or down.

So, it's just a volume knob for the subwoofer.
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post #3 of 10
TwoCables is correct, as usual.

Quote:
Originally Posted by Wikipedia
In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of the signal output of a system to the signal input of the same system. A gain greater than one (zero dB), that is, amplification, is the defining property of an active electronic component or circuit, while a passive circuit will have a gain of less than one.
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post #4 of 10


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post #5 of 10
Phase rev or norm is the direction you want the subwoofer to hit. I.E in the box or out of the box. Try both settings and settle for what sounds natural with your main speakers.
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post #6 of 10
The REV and NOR stand for reversed and normal and are for switching the phase of the waves coming from your sub. Low frequency waves are subject to cancellation due to reflections or conflicting sources. If you only have one sub, you should be fine at "NOR", but you can try it in both positions and leave it where the bass sounds best (if you hear any change at all)

Edit: ninja'd! *shakes fist*
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post #7 of 10
Thread Starter 
Quote:
Originally Posted by SongofStorms View Post
The REV and NOR stand for reversed and normal and are for switching the phase of the waves coming from your sub. Low frequency waves are subject to cancellation due to reflections or conflicting sources. If you only have one sub, you should be fine at "NOR", but you can try it in both positions and leave it where the bass sounds best (if you hear any change at all)

Edit: ninja'd! *shakes fist*
ahh i see
ive only got one

so norm it is!
Spaghett
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Spaghett
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post #8 of 10
I'd try it both positions as vwgti mentioned, just to make sure what sounds best with the other speakers.
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post #9 of 10
gain is the volume pretty much , rev and normal are the phase change .. sit where u listen to ur music and flick the switch to see which phase sounds better .. mine is on normal
    
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post #10 of 10
Oh, phase! Of course!

Yes, experiment with this and try both REV and NOR!

When recording drums, some tom-toms need to be out of phase to sound their best, and some need to be in phase (REV or NOR). I have an instructional video by a drummer named Dave Weckl who does his own sound and is very good at it. He demonstrated how just changing the phase for each tom mic can make the toms sound awesome, or it can make them sound a bit wimpy. But thanks to how each room is different, he said it's always a game of experimentation because he can't use the same phase settings for each of his 4 toms in a live setting that he was using in his studio.

So yes, definitely experiment and choose the setting that sounds best to you.
It's a computer!
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250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
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Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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