Not sure where the mod's may want this, but I hope it's helpful....
Quick Tips
When you hear hum or buzz from an electric guitar, try these solutions:
• Ask the guitarist to move around, or rotate, to find a spot in the room where hum disappears.
• Flip the polarity switch on the guitar amp (if applicable) to the lowest-hum position.
• To remove buzzes between guitar notes, try a noise gate.
• If the hum stops when the player touches the guitar strings, ask the player to keep his or her hands on the strings, or run a wire between the player’s skin and a ground point on the guitar (such as the strings or the jack ground.)
• Set the direct-box ground lift switch to the position where you monitor the least hum.
• Replace or repair guitar cords that have broken shields. Use only high-quality cords with metal-jacket plugs.
• Power the guitar amp off the mixer’s outlet strip.
• Use guitars with humbucking pickups, or install modern humbuckers in older guitars.
• Line cutouts in the guitar body with copper foil wired to the guitar-jack ground.
• If you suspect RFI, install ferrite beads, capacitors and chokes. Also see the references below.
• Replace any defective tubes in the guitar amp. If the power-supply filter capacitors in the guitar amp are corroded, replace them. This replacement should be done by an authorized technician.
• Use a quieter amplifier.
• Don’t use a noisy amp. Instead, record the guitar direct, then process its track with a guitar-amp modeling plug-in or processor.
• Don’t use SCR lighting dimmers because they add noise and hash to the AC power. Instead, use multiway incandescent bulbs to vary the studio lighting levels. If you must use a SCR dimmer, rotate its knob to find a position with the least hum (maybe the “off” position!).
• Run the studio off its own breaker, not shared with noisy loads such as air conditioning, power tools, etc. Don’t ground the neutral at more than one point (have an electrician check this). Use an AC line isolation transformer between the AC power and the studio equipment.
Be blessed....Robert
Quick Tips
When you hear hum or buzz from an electric guitar, try these solutions:
• Ask the guitarist to move around, or rotate, to find a spot in the room where hum disappears.
• Flip the polarity switch on the guitar amp (if applicable) to the lowest-hum position.
• To remove buzzes between guitar notes, try a noise gate.
• If the hum stops when the player touches the guitar strings, ask the player to keep his or her hands on the strings, or run a wire between the player’s skin and a ground point on the guitar (such as the strings or the jack ground.)
• Set the direct-box ground lift switch to the position where you monitor the least hum.
• Replace or repair guitar cords that have broken shields. Use only high-quality cords with metal-jacket plugs.
• Power the guitar amp off the mixer’s outlet strip.
• Use guitars with humbucking pickups, or install modern humbuckers in older guitars.
• Line cutouts in the guitar body with copper foil wired to the guitar-jack ground.
• If you suspect RFI, install ferrite beads, capacitors and chokes. Also see the references below.
• Replace any defective tubes in the guitar amp. If the power-supply filter capacitors in the guitar amp are corroded, replace them. This replacement should be done by an authorized technician.
• Use a quieter amplifier.
• Don’t use a noisy amp. Instead, record the guitar direct, then process its track with a guitar-amp modeling plug-in or processor.
• Don’t use SCR lighting dimmers because they add noise and hash to the AC power. Instead, use multiway incandescent bulbs to vary the studio lighting levels. If you must use a SCR dimmer, rotate its knob to find a position with the least hum (maybe the “off” position!).
• Run the studio off its own breaker, not shared with noisy loads such as air conditioning, power tools, etc. Don’t ground the neutral at more than one point (have an electrician check this). Use an AC line isolation transformer between the AC power and the studio equipment.
Be blessed....Robert
