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sailorsaturn
Copper Member
USA
9 Posts |
 Posted - 07/17/2008 : 05:44:43
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Can someone explain the difference to me between the two, I recently cam across ever more pedals for my board and now im torn between hitting everything in front of my jcm 900, or sending some of the stuff into the heads effects loop. It has a little volume thing there too and I dont know how to set it..,
and for you all so you dont learn the hard way, dont put a mxr 90 phase BEFORE a dimension 2 boss pedal or a dm3 delay. Absolutely erased it, dont know how... |
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DeFrag
Moderator
USA
3409 Posts |
Posted - 07/17/2008 : 07:27:07
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Line level is a term used to denote the strength of an audio signal used to transmit analog sound information between audio components. In contrast to line level, there are weaker audio signals, such as those from microphones and instrument pickups, and stronger signals, such as those used to drive headphones and loudspeakers. The strength of the various signals does not necessarily correlate with the output voltage of a device; it also depends on the source's output impedance, or the amount of current available to drive different loads at nominal levels or the operating level at which an electronic signal processing device is designed to operate.
+4 dBu (1.228 Volts RMS) = Pro audio components such as mixers, recorders etc.
-10 dBV (0.3162 Volts RMS) = Consumer audio like CD/DVD players etc.
In a nutshell, Line levels are strong higher voltage signals with high Signal-to-Noise ratios whereas Instrument levels (or microphone levels) must be increased in gain for processing or passing to output tranducers (speakers) via amplification.
Mics = balanced, low level, & low impedance
Guitars = unbalanced, low level, high impedance
Neither of which are at line levels. You typically amplify these signals through a gain potentiometer in a mixer so they can sum with other line levels within the mixer. A guitar signal can pass straight into an amplifier for direct sound. Note: the high impedance of a guitar signal must be converted to low impedance as input to a mixer in order to minimize certain frequency losses.
What really gets confusing though is the many variations of the Decibel: dB, dBu, dBV, & dBm to name but a few. I recommend you search these out for better understanding at http://www.wikipedia.org
For instance, Boss makes two volume pedals in particular, the FV500H (high impedance) meant to run in FRONT of your pedal chain & the FV500L (low impedance) really meant for keyboard use, hence the stereo in/out but you might choose the latter for use as a volume control WITHIN your pedal chain.
BTW, welcome to Bossarea!  |
Edited by - DeFrag on 07/17/2008 07:35:09 |
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Dirk
Platinum Member
Netherlands
1309 Posts |
Posted - 07/17/2008 : 10:51:11
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Hi Sailorsaturn, what do mean "erased it", that sounds a little weird.
The level on the jcm900 works basically like an output volume on a Boss pedal, just set it to where there's no volume difference when you put something in the loop as compared to the empty loop.
Also, as a general rule I like to put all chorus, flanger and delay pedals, as well as graphic EQ in the loop.
Those effects seem to sound a little better when put after the preamp distortion (assuming you use your amp for distortion).
Everything else goes in front (wahs, overdrives, pitch shifters, phasers, whammy pedals, octavers, auto wahs, etc.). |
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sailorsaturn
Copper Member
USA
9 Posts |
Posted - 07/17/2008 : 13:00:52
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thanks defrag, i think i got a(bit) clearer picture about that. As soon as I get the jacm serviced again ( was in my sisters home for two years, never used, i really hope those capacitors havent all dried up = ( . Ill fiddle with that.
O and about "erased" i meant the effect doesn't pass through. the mxr when on(even max speed) or off makes the same difference. Wild eh? I had to put the phase post dimension and post the delay to get it to phase. I guess the boss ones dont like him around ( the first non boss pedal i've bought) |
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Line level vs Instrument level
