Quick Rod & SD-1 - Why does it feedback?

[kurtsstuff]

Personally ..I find that if an amp does not have enough "ooomph" by itself then...Then It's not an amp I want. I go for amps that have an abundance of gain and distortion and that way...they are quieter and more controllable when you don't have to have them "maxed out" to get the desired amount of grind. I've always felt that if your using a distortion pedal...ya might as well be playing a solid state amp...sure...using them as a boost is cool but...it does screw up your "tube" tone to a degree but...Thats just me talkin....hehe

[Dirrty Craig]

I think an OD pedal is great for leads and banging the front end of a good tube amp.. for rhtyhms? no way.. Its also important to make a distinction between an overdrive pedal and a distortion pedal. OD does not or should not color the amps tone.

That being said, my Keeley modded SD-1 is officially retired. No need for ANY Od pedals with 3rd gear... or even 2nd... regardless of what style your playing.

[craggin]

I agree with you DirtyCraig...my Keeley modded SD-1 is probably getting sold. (I already sold the Bad Monkey.)

[jimbax]

craggin said:

I agree with you DirtyCraig...my Keeley modded SD-1 is probably getting sold. (I already sold the Bad Monkey.)

helpful hint-o-the-day...ANY pedal that has a 4558 chip is like pouring your tone into a funnel and getting chopped on the bottom and top end.

[Hacksaw]

Same here craggin,, I am not using my drive pedals, The splawn is doing great job natively. just keeps getting better and better

[Hacksaw]

jimbax said:

craggin said:

I agree with you DirtyCraig...my Keeley modded SD-1 is probably getting sold. (I already sold the Bad Monkey.)

helpful hint-o-the-day...ANY pedal that has a 4558 chip is like pouring your tone into a funnel and getting chopped on the bottom and top end.

OK i must add .02 cents, and trying to not get into geekville with details, its not the 4558 chips that make that nasally sound, its the combination of resistor and capacitors that creates this. granted there are the different smoothness of IC that handle clipping differently, and the 4558 was good at handling that. if you look at the response curve of the 4558 its pretty flat. you will see that Keeley and others are not changing the chip to change tone characteristic, they are changing capacitors. Geekville over..

[jimbax]

hacksaw said:

jimbax said:

helpful hint-o-the-day...ANY pedal that has a 4558 chip is like pouring your tone into a funnel and getting chopped on the bottom and top end.

OK i must add .02 cents, and trying to not get into geekville with details, its not the 4558 chips that make that nasally sound, its the combination of resistor and capacitors that creates this. granted there are the different smoothness of IC that handle clipping differently, and the 4558 was good at handling that. if you look at the response curve of the 4558 its pretty flat. you will see that Keeley and others are not changing the chip to change tone characteristic, they are changing capacitors. Geekville over..

I talked to AnalogMan for a while on this subject...the JRC chips and Texas Instrument chips (whatever) don't sound good unless they are eq'd a certain way...all I know is that EVERY pedal that I owned (easily over 50) that had one of these chips in it had a MAJOR mid-hump...Keeley tried to mod one of his pedals to give me more Freq response....no go....Analogman's 'silver' TS9/808 is the closest to 'transparent' but still mid-humped

[Hacksaw]

jimbax said:

hacksaw said:

I talked to AnalogMan for a while on this subject...the JRC chips and Texas Instrument chips (whatever) don't sound good unless they are eq'd a certain way...all I know is that EVERY pedal that I owned (easily over 50) that had one of these chips in it had a MAJOR mid-hump...Keeley tried to mod one of his pedals to give me more Freq response....no go....Analogman's 'silver' TS9/808 is the closest to 'transparent' but still mid-humped

Through circuit design, and with a spectrum analyzer (not one of those cute things with all the little lights they call an analyzer, think oscilloscope on crack) to find where the hump is, (which most guys dont have since they are $10,000 and up!) one can pinpoint the mid hump. we would inject a signal then monitor the output. you would see the hump on the scope. then you can build a notch filter to limit / remove the hump. have you ever found where the hump freq is by using a narrow banded EQ? Most of the battle is knowing where to cut. midrange is a fairly wide range.