ricksterphil Posted June 11, 2023 Share Posted June 11, 2023 So played a pub gig on Friday, had problems with some notes booming. A when played at 5th fret was the worst, got round it by playing very softly or playing open A near the bridge. My amp is a Handbox 400 so there isn't an EQ on the amp. I was playing my Mike Lull M4V which is active, but playing in passive mode as the active mode wasn't working for some reason, even with new batteries. This particular pub is a bit tricky for sound as we had a few issues with the PA. Any thoughts anyone? Should I buy a graphic EQ for my board? Ive tried a Boss GB7 in the past and didn't like it as it seemed to act more like a pre-amp. The amp was going through 2 12 inch cabs, a Handbox and a DHC, so was operating at 4ohms. Not sure if that's a factor. Quote Link to comment Share on other sites More sharing options...
ezbass Posted June 11, 2023 Share Posted June 11, 2023 2 minutes ago, ricksterphil said: This particular pub is a bit tricky for sound as we had a few issues with the PA. I suspect this is your problem. If you’ve not had this issue in other venues, this pub’s acoustics seems the most likely cause. 2 Quote Link to comment Share on other sites More sharing options...
itu Posted June 11, 2023 Share Posted June 11, 2023 A pedal with a graphic eq has pretty wide bandwidth. A full parametric might be a better help to find the exact boom in the room. A cheap Artec, maybe? 3 Quote Link to comment Share on other sites More sharing options...
krispn Posted June 11, 2023 Share Posted June 11, 2023 (edited) I have a wee cheat sheet for frequencies/notes that was very handy for quickly helping mitigate those boomy rooms or feedback The idea being if you play an A and you get boom you can work on the frequency of the note or the 5th as I believe they’re most likely the culprit notes/frequencies. To get the higher frequencies just double the numbers up for the respective range of the instrument causing the issue. If it’s an A note causing feedback the issue is likely gonna be a higher freq than what’s listed here usually but be either 440Hz 880Hz 1.7kHz 3.4kHz 6.8kHz or up and up approximately and if it’s a boomy resonance thing it could be worth checking 220Hz 110Hz 55Hz you get the idea. If that’s not working try the same simple process/equation for ‘the 5th’ which in this case is E. It helps if you can identity the offending note as that speeds up the problem solving rather than just twisting knobs mindlessly like our singer used to do before I gave him this chart! Its a simplistic formula but handy. To fix and issues you’ll obviously need an eq pedal so something with easy to grab sliders is useful as they tell you the frequency! The Genzler pedal on the for sales would be a great tool for this kinda thing. Ignore the missing # for the B-F#😖 Edited June 11, 2023 by krispn 1 4 Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted June 11, 2023 Author Share Posted June 11, 2023 56 minutes ago, krispn said: I have a wee cheat sheet for frequencies/notes that was very handy for quickly helping mitigate those boomy rooms or feedback The idea being if you play an A and you get boom you can work on the frequency of the note or the 5th as I believe they’re most likely the culprit notes/frequencies. To get the higher frequencies just double the numbers up for the respective range of the instrument causing the issue. If it’s an A note causing feedback the issue is likely gonna be a higher freq than what’s listed here usually but be either 440Hz 880Hz 1.7kHz 3.4kHz 6.8kHz or up and up approximately and if it’s a boomy resonance thing it could be worth checking 220Hz 110Hz 55Hz you get the idea. If that’s not working try the same simple process/equation for ‘the 5th’ which in this case is E. It helps if you can identity the offending note as that speeds up the problem solving rather than just twisting knobs mindlessly like our singer used to do before I gave him this chart! Its a simplistic formula but handy. To fix and issues you’ll obviously need an eq pedal so something with easy to grab sliders is useful as they tell you the frequency! The Genzler pedal on the for sales would be a great tool for this kinda thing. Ignore the missing # for the B-F#😖 Thanks, very useful..... I'll save and refer to if it happens again 🙂 I've seen the Genzler pedal and am pondering Quote Link to comment Share on other sites More sharing options...
fretmeister Posted June 11, 2023 Share Posted June 11, 2023 I use a Boss EQ-200 for finding and removing the worst frequencies. Lots of bands are a good idea for this, or a parametric. 1 Quote Link to comment Share on other sites More sharing options...
MartinB Posted June 11, 2023 Share Posted June 11, 2023 I bet you could find enough room on your board for one of these... https://sineeffect.company.site/nanoPara-1-band-EQ-p553975571 2 1 Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted June 11, 2023 Author Share Posted June 11, 2023 You're right, I could 🙂 Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted June 11, 2023 Author Share Posted June 11, 2023 1 hour ago, MartinB said: I bet you could find enough room on your board for one of these... https://sineeffect.company.site/nanoPara-1-band-EQ-p553975571 Not sure if a parametric or graphic EQ would be best....I need to research how a parametric EQ works and how to adjust it effectively Quote Link to comment Share on other sites More sharing options...
Passinwind Posted June 11, 2023 Share Posted June 11, 2023 43 minutes ago, ricksterphil said: Not sure if a parametric or graphic EQ would be best....I need to research how a parametric EQ works and how to adjust it effectively Short answer: put it in medium to wide bandwidth mode with some boost, sweep frequency until is makes things worse, narrow the bandwidth as needed, go to cut mode rather than boost and fine tune the frequency. An experienced user can do all that in a couple of seconds. A really experienced user just dials in the primary problem frequency that they already recognize and cuts it. Another possibility is playing with cab placement, for instance getting it out of a corner or closer to or further from a wall or the floor. It may also be worthwhile to make sure it's not related to unwanted bass getting into the microphones and/or exciting the drum kit and creating ringing that way. 4 Quote Link to comment Share on other sites More sharing options...
krispn Posted June 11, 2023 Share Posted June 11, 2023 3 hours ago, MartinB said: I bet you could find enough room on your board for one of these... https://sineeffect.company.site/nanoPara-1-band-EQ-p553975571 Or two or three 😀 2 1 Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted June 11, 2023 Author Share Posted June 11, 2023 1 hour ago, Passinwind said: Short answer: put it in medium to wide bandwidth mode with some boost, sweep frequency until is makes things worse, narrow the bandwidth as needed, go to cut mode rather than boost and fine tune the frequency. An experienced user can do all that in a couple of seconds. A really experienced user just dials in the primary problem frequency that they already recognize and cuts it. Another possibility is playing with cab placement, for instance getting it out of a corner or closer to or further from a wall or the floor. It may also be worthwhile to make sure it's not related to unwanted bass getting into the microphones and/or exciting the drum kit and creating ringing that way. Thanks. The cabs were close to the drums so that probably didn't help 1 Quote Link to comment Share on other sites More sharing options...
Passinwind Posted June 11, 2023 Share Posted June 11, 2023 27 minutes ago, ricksterphil said: Thanks. The cabs were close to the drums so that probably didn't help Sometimes re-tuning the kick and/or the floor tom a little can help as well, in my experience. 1 Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted June 11, 2023 Author Share Posted June 11, 2023 (edited) 7 minutes ago, Passinwind said: Sometimes re-tuning the kick and/or the floor tom a little can help as well, in my experience. The floor tom was right in front of my cabs....wonder if that was a factor Edited June 11, 2023 by ricksterphil Quote Link to comment Share on other sites More sharing options...
Boodang Posted June 14, 2023 Share Posted June 14, 2023 'A' seems to be a common troublesome note in terms of acoustics. We have the same issue with our rehearsal room and a couple of local venues. Solution... rather than buy extra eq's, change the key of your songs to avoid any use of the note. It's much cheaper that way! 1 Quote Link to comment Share on other sites More sharing options...
krispn Posted June 14, 2023 Share Posted June 14, 2023 I once had a sound guy as if I could “not play that note!” during a sound check. “What don’t play a G! For the rest of the gig?” Yeah he replied. 😖 Quote Link to comment Share on other sites More sharing options...
Baloney Balderdash Posted June 14, 2023 Share Posted June 14, 2023 (edited) 1 hour ago, krispn said: I once had a sound guy as if I could “not play that note!” during a sound check. “What don’t play a G! For the rest of the gig?” Yeah he replied. 😖 Well, sometimes you need to be willing to make compromised, think of it, he could have chosen to make his job even easier and just told all of you not to play at all. Kind of like how painters usually needs to be payed extra to bother putting up masking tape and not just paint over wall power outlets e.t.c. Edited June 14, 2023 by Baloney Balderdash Quote Link to comment Share on other sites More sharing options...
BassAdder60 Posted June 15, 2023 Share Posted June 15, 2023 Sometimes playing with a pick takes away the boom as less note fundamental.. not a solution if you are only a fingers player Quote Link to comment Share on other sites More sharing options...
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