Nsoul Posted March 28, 2013 Share Posted March 28, 2013 [font=arial, sans-serif]Hi guys, Today I tried to loop a Equalizer pedal between [/font][font=arial, sans-serif]the send output and the return input of a GK MB Fusion amp head. I want to use the boost channel as the source of dirt and I know a [/font][font=arial, sans-serif]equalizer pedal should come after overdrive which will deliver a [/font][font=arial, sans-serif]better sound. However after some tweaking, I found that there was a [/font][font=arial, sans-serif]crack sound came from the cab, especially when I turn the bass knob up [/font][font=arial, sans-serif]on the front panel and the crack happens more frequently when I play [/font][font=arial, sans-serif]my bass harder. I use a Boss GEB-7 equalizer pedal. I also tried other [/font][font=arial, sans-serif]pedals in the loop, e.g. a ISP Decimator noise reduction, the problem [/font][font=arial, sans-serif]happened again. Until I tried a Boss DD-3 Digital Delay, the sound [/font][font=arial, sans-serif]came back to normal.[/font] [font=arial, sans-serif]Firstly, I thought it might be the problem of mismatching the [/font][font=arial, sans-serif]impedance, but I searched both manuals of my MB Fusion and GEB-7, it [/font][font=arial, sans-serif]should not be the problem. After some researches and discussions with[/font] [font=arial, sans-serif]my band mates, I found that may be such thing happens when the signal [/font][font=arial, sans-serif]level is not matched. In the manual of GEB-7, there is a Nominal Input [/font][font=arial, sans-serif]Level and a Nominal Output Level specification which both are -20dBm. [/font][font=arial, sans-serif]So I am wondering is the crack sound comes out from the EQ pedal [/font][font=arial, sans-serif]because there is too much signal goes through it?[/font] [font=arial, sans-serif]So anyone here knows the exact output level [/font][font=arial, sans-serif]from the send output? I think it might be +4dB for racks? The poor thing is it does not have a switch or a knob for alternating loop level. I guess the signal comes out from loop send is very large that my pedal [/font][font=arial, sans-serif]could not bear with it. [/font] I hope that crack sound will not cause damage to my pedals and the head... Help please...Any ideas? Quote Link to comment Share on other sites More sharing options...
Jack Posted March 28, 2013 Share Posted March 28, 2013 You probably haven't done any damage, but yes pedals go in front of the amp generally. :-) Quote Link to comment Share on other sites More sharing options...
Graham Posted March 29, 2013 Share Posted March 29, 2013 If you've got a hot signal going into the EQ pedal, have you tried turning all the filter sliders right down and then slowly bringing them up again to a level where it's not an issue? Quote Link to comment Share on other sites More sharing options...
Nsoul Posted March 30, 2013 Author Share Posted March 30, 2013 [quote name='Jack' timestamp='1364497279' post='2027382'] You probably haven't done any damage, but yes pedals go in front of the amp generally. :-) [/quote] Thanks for the reply. The reason why I loop them is because I want to use the amp's second channel to get a overdrive sound. So I suppose loop is essential because not all the pedals are in front of overdrive, are they Now I just quit using the amp's overdrive and back to Boss ODB-3 .. Quote Link to comment Share on other sites More sharing options...
Nsoul Posted March 30, 2013 Author Share Posted March 30, 2013 [quote name='Graham' timestamp='1364546691' post='2027884'] If you've got a hot signal going into the EQ pedal, have you tried turning all the filter sliders right down and then slowly bringing them up again to a level where it's not an issue? [/quote] Actually, the pedal clips even they are not activated. I think this is another reason that why a true-bypass pedal would be better.... Quote Link to comment Share on other sites More sharing options...
Jack Posted March 30, 2013 Share Posted March 30, 2013 [quote name='Nsoul' timestamp='1364644896' post='2029142'] Because not all the pedals are in front of overdrive, are they [/quote] Mine are. I use all my pedals in front of the very same amp, using both channels. Quote Link to comment Share on other sites More sharing options...
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