Parametric mid EQ on Schertler

[firelakekid2]

A week ago I bought a Schertler Jam 200. I've been playing through it at home, trying to tune things in and this amp sounds wonderful for guitar and vocal. That has been pretty easy, except I am not understanding the parametric mid deal on two of the channels. I have pretty much left the dials straight up, just flat and guitar and vocals sound good. I have been using a Soundcraft EFX8 and powered speakers with my "traditional" system. So the parametric seems different to me. I have a 000-42 Martin with a K&K. If it sounds bassy when plugging in I just have turned down the "Low" a bit and its fine. Sometimes though my A string seems a bit boomy--especially when the volume is turned up when I've used my tradition system and now on the Jam. I've gone on line and tried to find some helpful Youtube videos, but not much luck. Your advice/thoughts would be appreciated.

[Cuki79]

1) turn up the gain on your parametric mid in order to “boost”
2) turn the frequency pot while playing the A string. Once you reach the offending frequency, it should be SUPER boomy
3) Once the offending frequency is fine, turn the gain down to “cut” that frequency

Note that A is 110 Hz… it is probably the low resonance of your guitar



Here are the low resonance for a bunch of Taylors



The Schertler parametric does not allow to go the low… (min 300 Hz)

[Ten]

Originally Posted by Cuki79

1) turn up the gain on your parametric mid in order to “boost”

2) turn the frequency pot while playing the A string. Once you reach the offending frequency, it should be SUPER boomy

3) Once the offending frequency is fine, turn the gain down to “cut” that frequency

Just wanted to comment as I followed this advice from you on another post a long time ago, and it remains the best and easiest to follow recommendation I’ve seen on the matter. Really appreciated cuki.

[Cuki79]

Originally Posted by Ten

Just wanted to comment as I followed this advice from you on another post a long time ago, and it remains the best and easiest to follow recommendation I’ve seen on the matter. Really appreciated cuki.

Thanks Ten,

All the credit should go to Doug Young. I am just sharing what I have learned reading his book: "Acoustic Guitar Amplification Essentials: Complete Edition"

https://store.acousticguitar.com/pro...ion-essentials

Although the whole book is worth reading, the EQ chapter is only $3.99

https://store.acousticguitar.com/pro...on-and-effects

Every chapter includes a video where Doug explains everything.

[firelakekid2]

Thanks Cuki 79 for the response and the chart. Will be quite helpful.

[rockabilly69]

And remember, if your resonant frequency is below 300 hz. you can always plug into channel 2 and use the resonance control which is designed to deal with the runaway low and low mid frequencies! It centers on 150 hz or 240 hz depending where the switch is set, and turning it to the right gives a deeper wider cut.