Ibanez Flying Pan reissue
Moderated By: mods
http://www.buildyourownclone.com/phaser.htmlMike wrote:I haven't looked into phasers yet, but I imagine it means at least 3 ICs.
Looks like a script logo MXR Phase 90 clone. If I had the cash I'd pick that kit up and build it.
Phasers use a high-pass capacitor combined with a resistor to emphasize a given frequency, determined by the resistance. The resistance is constantly changed by the JFETs and LFO IC, hence the emphasis is swept up and down. Functionally, it's similar to turning your tone control up and down.
The Phase part comes into play because each of these resistor/capacitor networks is hooked into the inverting input of an OpAmp, which flips the signal's polarity 180 degrees. This usually happens 4 times (in the case of a Phase 90 or SS). Since a Mono device cannot push and pull the signal at the same frequency simultaneously, the frequencies which each stage had in common with the one preceding it are canceled out inversely proportional to their amplitude. Hence, the emphasized frequencies become notches.
Basically the chain is: Buffer-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Buffer-Blend-Out
Finally, a bit of uneffected signal is blended back in to make the effect more subtle.
The Phase part comes into play because each of these resistor/capacitor networks is hooked into the inverting input of an OpAmp, which flips the signal's polarity 180 degrees. This usually happens 4 times (in the case of a Phase 90 or SS). Since a Mono device cannot push and pull the signal at the same frequency simultaneously, the frequencies which each stage had in common with the one preceding it are canceled out inversely proportional to their amplitude. Hence, the emphasized frequencies become notches.
Basically the chain is: Buffer-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Buffer-Blend-Out
Finally, a bit of uneffected signal is blended back in to make the effect more subtle.
Holy fuck, what?DuoSonicBoy wrote:Phasers use a high-pass capacitor combined with a resistor to emphasize a given frequency, determined by the resistance. The resistance is constantly changed by the JFETs and LFO IC, hence the emphasis is swept up and down. Functionally, it's similar to turning your tone control up and down.
The Phase part comes into play because each of these resistor/capacitor networks is hooked into the inverting input of an OpAmp, which flips the signal's polarity 180 degrees. This usually happens 4 times (in the case of a Phase 90 or SS). Since a Mono device cannot push and pull the signal at the same frequency simultaneously, the frequencies which each stage had in common with the one preceding it are canceled out inversely proportional to their amplitude. Hence, the emphasized frequencies become notches.
Basically the chain is: Buffer-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Buffer-Blend-Out
Finally, a bit of uneffected signal is blended back in to make the effect more subtle.
No, thanks for the link Mike.Mike wrote:Check out tehse guys:
http://www.futurlec.com/PotSliding.shtml
Insanely cheap. Their regular pots are Alphas and sell for $0,50.
Totally recommend them. Are you making a Harmonic Perculator?
paul_ wrote:When are homeland security gonna get on this "2-piece King Size Snickers" horseshit that showed up a couple years ago? I've started dropping one of them on the floor of my car every time.
SCIENCESparky wrote:Holy fuck, what?DuoSonicBoy wrote:Phasers use a high-pass capacitor combined with a resistor to emphasize a given frequency, determined by the resistance. The resistance is constantly changed by the JFETs and LFO IC, hence the emphasis is swept up and down. Functionally, it's similar to turning your tone control up and down.
The Phase part comes into play because each of these resistor/capacitor networks is hooked into the inverting input of an OpAmp, which flips the signal's polarity 180 degrees. This usually happens 4 times (in the case of a Phase 90 or SS). Since a Mono device cannot push and pull the signal at the same frequency simultaneously, the frequencies which each stage had in common with the one preceding it are canceled out inversely proportional to their amplitude. Hence, the emphasized frequencies become notches.
Basically the chain is: Buffer-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Filter-Mod-Flip-Buffer-Blend-Out
Finally, a bit of uneffected signal is blended back in to make the effect more subtle.
Yes - 2AM post is inaccurate. It's blended back in with an out-of-phase signal produced by the effect section, causing the corner frequencies to be canceled out. If you disconnect the clean blend, you get a vibrato effect.Mike wrote:Actually I think teh original signal is blended back to make the effect audible rather than subtle.
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- Location: Jefferson, GA