Anonymous
Guest
Nov 16, 2008
9:37 AM
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I'm trying to play thru my old fender princeton and a green bullet,and when I stop playing it just howls and howls. How can I stop this, it sounds so cool while I"m paying and the instant I stop it begins to howl.
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harmonicanick
63 posts
Nov 16, 2008
10:12 AM
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Feedback is a problem for all amplified musicians with mics.
I don't know what is the technical reason for it (I am sure there is someone on this forum who can enlighten us?)
But I have been playing in bands and it's always a problem.
Usually you need to turn down, have your harp amp behind you and angled up (amp stand) mic thro' the pa so the pa can adjust the volume. Stand facing away from the amp.
Get everyone to turn down the volume!
Experiment with the volume on your bullet and amp..take some time with the guitarist and bass players. You should play in harmony with these guys.
What amp are you using? Is the pa feeding back? Can you hear your harp over the others..is your amp a monitor or solo, in which case you may be turning up to hear yourself.
If it gets too much go through the vocal mic on the pa.
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MrVerylongusername
27 posts
Nov 16, 2008
11:44 AM
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Feedback is caused when the mic picks up one of it's own signals. The Green Bullet is an Omindirectional and High Impedance mic. Both of these increase the chance of feedback. The GB has a pronounced peak in its midrange sensitivity.
All Nick's advice about placement of the amp is good.
Try cutting the mid frequencies with your amps eq controls or an EQ pedal. Reverb causes feedback - keep it to a minimum.
Reducing the amount of gain on your amp can help too. If you have a volume pot on your bullet, lower the mics output level and let the amp do more of the work.
If you are micing up the amp into a PA, remember the PA speakers and monitors will also be a cause of feedback if not positioned and EQd correctly.
Finally, many harp players use lower gain preamp tubes in their amp, this allows you to crank the gain further before feedback. I'm not familiar with a Princeton, but I believe it uses a single 12AX7 for the preamp stage. Try swapping the 12AX7 for a 12AY7.
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kirnagar
Guest
Nov 16, 2008
3:59 PM
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Thanks for the advice guys, I think I will try the eq pedal. I've only got volume, base, and treble on the old princetonn and the reverb and tremelo, which I always turn all the way down. Maybe I should try unplugging the reverb all together.
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