#1
I have a valve jr and it has plenty of mids which is great for overdrive but I like my cleans to have a little less mids and so I need a way to be able to cut mids while I'm not using overdrive and let the mids back up when I am using it. Is there any way I could make a "mid-cutting" pedal or something?
Guitars:
LTD F-50
Yamaha EG-112
'77 Harmony
Roadworn Starcaster
Gretsch G5120

Amps:
Vypyr 15
Epiphone Valve Junior combo
#3
Well for the time being I'm in no position to spend money and I'd rather just make something that'll simply cut out some of the mids.
Guitars:
LTD F-50
Yamaha EG-112
'77 Harmony
Roadworn Starcaster
Gretsch G5120

Amps:
Vypyr 15
Epiphone Valve Junior combo
#4
I suppose you could make a simple passive band-stop filter pedal, it'll be lossy, so maybe put a buffer (simple JFET or op-amp) in it.

http://sim.okawa-denshi.jp/en/TwinTCRkeisan.htm

For adjustment, put a pot in parallel with the circuit from the input to the output.

I have no idea how it'll sound though.
Last edited by earthwormjim at May 17, 2011,
#7
Well I probably should have been more clear, the easiest and CHEAPEST way to cut mids, I really don't care how complicated it is to build, I just want a simple way to switch it if that makes sense.
Guitars:
LTD F-50
Yamaha EG-112
'77 Harmony
Roadworn Starcaster
Gretsch G5120

Amps:
Vypyr 15
Epiphone Valve Junior combo
#8
Quote by grungebaby
Well I probably should have been more clear, the easiest and CHEAPEST way to cut mids, I really don't care how complicated it is to build, I just want a simple way to switch it if that makes sense.




Anyway, an equaliser is what you want, but if you're going to build an 'on/off' eq that only cuts a specific frequency, why not just go all out and build/buy a full eq pedal?
#9
well i'd say this is pretty easy.

http://www.jpbourgeois.org/guitar/microsbis.htm

shouldnt be hard to adapt to a "pedal". (or just put it in the guitar, it'd save you some wire, cable, and a box)
#10
YES!!! lol thats pretty much exactly what I was looking for, Thanks Jim.
Guitars:
LTD F-50
Yamaha EG-112
'77 Harmony
Roadworn Starcaster
Gretsch G5120

Amps:
Vypyr 15
Epiphone Valve Junior combo
#11
So I hit a little hiccup, I'm going to add it to one of my guitars, but the only kind of inductor I have has 5 legs, can I use this one and what legs would I use?
Guitars:
LTD F-50
Yamaha EG-112
'77 Harmony
Roadworn Starcaster
Gretsch G5120

Amps:
Vypyr 15
Epiphone Valve Junior combo
#12
you sure it's not one of those little 1k to 8-ohm impedance matching audio transformers?

http://sci-toys.com/scitoys/scitoys/radio/xformer.jpg

those don't have an inductance of 1.5H. im not sure of actual values, but i hear the primary of one of those makes a decent wah inductor. an ideal wah inductor is around 500mH.
Last edited by Invader Jim at May 24, 2011,
#13
I'm also having trouble finding an inductor, I heard on another forum that you can use a transformer from Radioshack, but there are two listed on the site. Which one can I use?
Ibanez AM78T with Lace Sensors
Squier Affinity with American Standard Electronics
Line 6 duoVerb
Behringer Vintage Tube Overdrive, Heavy Distortion, and Vintage Tube Monster
Digitech RP500

Yeah, I have a colored sig.
#15
Woah, expensive component is way more expensive than I thought. I found this on smallbear though and ordered it.
Ibanez AM78T with Lace Sensors
Squier Affinity with American Standard Electronics
Line 6 duoVerb
Behringer Vintage Tube Overdrive, Heavy Distortion, and Vintage Tube Monster
Digitech RP500

Yeah, I have a colored sig.
#16
you can make a band-stop filter without using any inductors as well. inductors are inherently more expensive than resistors and capacitors, so even if you increase your parts count, you can keep cost down.
example: http://www-k.ext.ti.com/SRVS/Data/ti/KnowledgeBases/analog/document/faqs/spsknhq.htm
see section 7 here: http://www.linkwitzlab.com/filters.htm