unclej Posted April 28, 2006 Report Share Posted April 28, 2006 i took in a nice crate acoustic amp yesterday on consignment..while i was checking it out i noticed that it had several built in effects including delay, slap, chorus, etc. no overdrive. anyway, it's done with a dial and not a switch. and the dial doesn't have positive stops..it's just like a potentiometer in feel. any idea how this is accomplished? Quote Link to comment Share on other sites More sharing options...
George Brown Posted April 28, 2006 Report Share Posted April 28, 2006 my geuss would be that it uses digital ic's (intergrated circuits) like logic gates so when r=250 effect=phaser or whatever, thats just a guess though Quote Link to comment Share on other sites More sharing options...
TenderSurrender Posted April 28, 2006 Report Share Posted April 28, 2006 Not sure if i know what you mean completly but i know my Line 6 amp doesnt have any switches for effects but instead just uses dials to allow you to choose which one, how much the f/x is in the signal and then a single button to tap the delay speed ~~ TS ~~ Quote Link to comment Share on other sites More sharing options...
mammoth guitars Posted April 28, 2006 Report Share Posted April 28, 2006 It could be an optical or binary switch with no detents. Quote Link to comment Share on other sites More sharing options...
unclej Posted April 28, 2006 Author Report Share Posted April 28, 2006 thanks everyone..when i get some time i may call crate and see if i can find out for sure..it's really got me curious now. TenderSurrender this is just one knob with nine different effects or settings and it flows smoothly from one to the next without any positive stops like you would with a regular rotary switch. anyway, i'll find out when i can and let everyone know. Quote Link to comment Share on other sites More sharing options...
TenderSurrender Posted April 28, 2006 Report Share Posted April 28, 2006 Line 6 do the same. There is 2 knobs (one for each style of effect) and oyu just freely spin it round each has 3 effects on and as u spin it the intensity of the effect gets higher before it switches to the next one ~~ TS ~~ Quote Link to comment Share on other sites More sharing options...
gripper Posted April 28, 2006 Report Share Posted April 28, 2006 Those are called rotary encoder switches and they put out a pulse that a chip reads, counts and switches to the next effect up or down depending on what direction you turn it. Very cool once you get used to them. Lots of mixers use them for effect selection and screen jogging. Kinda like a one-direction mouse. Encoders ROCK!!! Quote Link to comment Share on other sites More sharing options...
Marzocchi705 Posted April 28, 2006 Report Share Posted April 28, 2006 My marshal has a simelar dial, Reverb/delay/chorus/flange then a seperalt switch for the level the effect is mixed with your sound. I always just took it for granted, never thought how it worked. Quote Link to comment Share on other sites More sharing options...
unclej Posted April 29, 2006 Author Report Share Posted April 29, 2006 Those are called rotary encoder switches and they put out a pulse that a chip reads, counts and switches to the next effect up or down depending on what direction you turn it. Very cool once you get used to them. Lots of mixers use them for effect selection and screen jogging. Kinda like a one-direction mouse. Encoders ROCK!!! thanks..that makes sense..so it is like a potentiometer and as the output increases from the low end the chip reads it and kicks in a different effect..cool..i'm happy now. Quote Link to comment Share on other sites More sharing options...
JoeAArthur Posted April 29, 2006 Report Share Posted April 29, 2006 Instead of thinking of a pot as a variable resistance... think about variable resistance providing a variable voltage. Voltage control? Sure, been used in synthesizer circuits for decades. Simple to convert voltage to a digital signal. Quote Link to comment Share on other sites More sharing options...
gripper Posted April 29, 2006 Report Share Posted April 29, 2006 (edited) Well, no. It puts out two digital high-low signals in a format called quadrature that makes a chip (decade or cascade counter) count up or down. All ones and zeros again. In case you were wondering, it is a very cheap way to make a complex switch arrangement. Very flexible. Ones and zeros ROCK!!! Edited April 29, 2006 by gripper Quote Link to comment Share on other sites More sharing options...
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