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War against hi-midrange feedback

Nikto

Nikto

Sep 24, 2014
64
12
40
Slovakia
Disclosures
roman cthulist
#1
I am drone/doom musician and deep powerful feedback is my primary weapon.
I cranck all of my amps, using maximum gain, overdrive, volume and long and deep sustain is my wanted output.
Every feedback under 240Hz is welcomed.

But i really hate when i catch feedback in high midrange frequencies.
I don't want to harm anyones ears (except some politicians, put their don't visit drone/doom gigs :D )

My idea is to use graphic EQ to put down feedback frequencies (always are same)
[Invalid or Expired Link Removed]
[Invalid or Expired Link Removed]

Difference is :
215 is 15 band - 1 rack U
231 is 31 band - 2 rack U

I needed 6U rack instead of 4U for 2U EQ.
Is it important to have 31 band EQ when i can put down current frequency ? Is difference in harmony such critical ?

Another solution is to use feedback destroyer, but is digital device and is behringer.
I can't trust this mark.

There are 3 models :
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Last is second hand for good price :
Behringer Feedback Destroyer DSP 1124P | Midi

Every device has high rating, but nobody use it direct to guitar/bass amp fx loop. Some people told this device is OK for clean vocals, but it kills color of guitar distortion.

Perfect distortion is my alpha and omega.

Some ideas, guys ?

My preferred choice is DBX 215.
 
#3
wait, i think you want the strings to feed back from the amp volume, so you get the sustaining wall of sound that's actually something you use and control as part of the music.

what you don't want is the ear-splitting squeal where the pickups or mics or whatever else take off by themselves!

the fix isn't so much EQ because that puts holes in your tone; what you need is good-quality pickups, maybe wax-potted, securely mounted to the instrument (maybe even hard-mounted with wood underneath instead of springs or foam) so that the pickups themselves don't oscillate or vibrate.

you also may need to back the overdrive off just enough to where you just stay below the threshold of everything squealing, and go easy on the high end on the EQ of the pedals and amps. getting further away from your amp helps here too.

the last thing you want is any kind of automatic feedback destroyer, it'll grab the first sustaining note it hears and choke it off!
 
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#4
Geri O said:
I am no ways ashamed to say that I have no idea what to tell you.

I mean, I'm totally stumped.
Click to expand...
here's a taste of what i think the OP is after:


they're so insanely loud that they can't even have vocals or a drummer; it's not so much music as it is a kind of air molecule-frying sonic sculpture.

(also, i suspect they sport those hooded robes so the crowd doesn't see the aircraft carrier flight deck earmuffs they gotta be wearing under there!)
 
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#6

Nikto said:
My idea is to use graphic EQ to put down feedback frequencies (always are same)
[Invalid or Expired Link Removed]
[Invalid or Expired Link Removed]


My preferred choice is DBX 215.
Click to expand...
Forget the graphic EQs and get a parametric EQ like the vintage Rane PE-17, Symmetrix 551, or Ashly PQ16 / PQX. With a parametric EQ you can nail the exact frequency that’s feeding back. With a graphic EQ all you can do is get close. For instance, what if the feedback is centered directly between two of the sliders?? In addition, feedback frequencies are typically ultra narrow, 1/6-1/8 octave or less. With a 1/3-octave EQ you’re depressing at least twice as much bandwidth as is necessary, and with a 2/3-octave (15-band) you’re wiping out four times more. By contrast, with a parametric EQ you can precisely notch out the ringing frequency and leave the rest of the frequency spectrum untouched. Simply put, graphic EQs are good tools for tone shaping, but not for eliminating feedback.

Regards,
Wayne A. Pflughaupt


Administrator, Pedulla Club #45
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Fretless Club #943
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Pedulla Club #45

 
#7
WayneP said:
With a parametric EQ you can nail the exact frequency that’s feeding back.
Click to expand...
loves me some parametric (my own little bar/club PA uses a PE17 as the mains EQ) but i still think the key is eliminating the source of "bad" feedback, typically the pickups themselves oscillating.
 
#8
walterw said:
loves me some parametric (my own little bar/club PA uses a PE17 as the mains EQ) but i still think the key is eliminating the source of "bad" feedback, typically the pickups themselves oscillating.
Click to expand...

Well...well...I love parametrics, too!...

(Is it safe to ASSume that I like parametrics for very different reasons than the application listed above?...:D)
 
#9
walterw said:
here's a taste of what i think the OP is after:


they're so insanely loud that they can't even have vocals or a drummer; it's not so much music as it is a kind of air molecule-frying sonic sculpture.

(also, i suspect they sport those hooded robes so the crowd doesn't see the aircraft carrier flight deck earmuffs they gotta be wearing under there!)
Click to expand...


Okay, then....

(This is a case of, if I have to ask the question, I'm not gonna understand the answer....:eyebrow:)
 
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#11
I can buy this from second hand ?
T.C. Electronic TC 1220 Parametric Equalizer - Vintage! | TalkBass.com
Is good deal or not ?
Parametric EQs are VERY expensive, i don't have too much money to buy this. My budget maximum for EQ is 200E.
I need also rack case, pedalboard, volume pedal and ABY splitter (without hum ... 90EUR and more) and lot of hi-quality cables.
I have gig 10. July on great dark ambient / drone festival : "Two nights of darkness". I don't want piss-off sound engineer with soundcheck longer than performance :)
 
#12
WayneP said:
Forget the graphic EQs and get a parametric EQ like the vintage Rane PE-17, Symmetrix 551, or Ashly PQ16 / PQX.
Click to expand...

Rane-PE17 US $396.00
Rane PE17 Blackface Version 5 Band Parametric Equalizer EQ Vintage Rack | eBay

Ashly PQ16 US $316.00
Ashly PQ16 6 Band Parametric Equalizer EQ Vintage Rack | eBay

Symetrix 551E Parametric Equalizer 551 E EQ #2 - US $249.00
Symetrix 551E Parametric Equalizer 551 E EQ 2 | eBay

EQ TC ELEKTRONIC 1220 --about 100 EUR
Link Removed

Not bad, but 396 + shipping to Slovakia is over my budget :(
 
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#13
All my kidding and nonsense aside, I do feel for the overseas guys looking for good gear, but being hit with exorbitant mark-ups and horrendous shipping.

Good luck with that project, Nitko. You certainly are a good sport.
 
#16
walterw said:
here's a taste of what i think the OP is after:


they're so insanely loud that they can't even have vocals or a drummer; it's not so much music as it is a kind of air molecule-frying sonic sculpture.

(also, i suspect they sport those hooded robes so the crowd doesn't see the aircraft carrier flight deck earmuffs they gotta be wearing under there!)
Click to expand...


What the hell is that?!! The only way Sunn promoted these guys was show you that their amps can be played at this volume for extended periods of time without completely frying out or exploding!
 
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#18
Nikto said:
Wayne-P recommended Rane PE 17 not Rane PE 15.
I must study difference.
Click to expand...
The PE 15 is more than enough parametric to do what you need. (Still recommend fixing the problem, likely with the pickups themselves, rather than trying to chase it around with outboard EQ)
 

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