HARP SHIELD®

 
Reduces Feedback

$217 AUD plus postage

 

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ABOUT 

Audio signals from the amplifier’s speaker are picked up by the microphone and fed back into the amplifier where it is amplified again resulting in what we know as feedback; the Harp Shield will prevent this process from ever starting by using noise gate technology. The Harp Shield is designed to mute the microphone when you are not playing by decoupling the microphone from the amplifier, thus preventing feedback. With the Harp Shield your microphone is muted when not playing and as you begin to play, the Harp Shield will unmute and allow your signal to pass through to the amp; when you stop playing, the pedal automatically mutes the microphone to prevent feedback. The pedal has a sensitivity control to prevent background noises from opening the audio path and inducing feedback. In the event that feedback does occur, just press the footswitch (a momentary switch) to reset the pedal and stop the feedback. When using this pedal, it is still necessary to use proper microphone handling techniques to help prevent feedback while playing. The Harp Shield differs from guitar noise gates in that the gate range is set for microphone levels and the fact that you will not lose any tone.

UPDATE 10/21/12 - In response to some questions that I have received I am adding the following information. The pedal requires a minimum level of signal from the mic to open the gate and when the signal drops back down to the same minimum level the gate will close. This function is not noticeable with the sensitivity set low (CCW) but is noticeable with the sensitivity set high (CW); but this is only a factor when playing softly. The pedal is not a silver bullet, it has its limitations. One is when the room acoustics are horrible for feedback, small and hard walled (like a spare bedroom), it does not help at all. The second is a tight band setting that is very loud (all too common), this is due to the fact that when the sound levels hitting the microphone are too high it can keeping the gate open. In the last instance one must also roll off the volume on the microphone when not playing.

SETTINGS 

The only control is the SENSITIVITY control. With the control all the way CCW the pedal is most sensitive and will allow virtually any signal to pass through the microphone; but, the mic will be more susceptible to a low volume noise opening the pedal and inducing feedback. Turning the control CW increases protection from feedback by requiring a higher level of audio to unmute the microphone and pass the audio. With the control turned too far CW you may not be able to pass audio while playing softly. The foot switch is a momentary non-latching switch; pressing the switch mutes the microphone (kills the audio) and resets the gate stopping feedback. The Harp Shield should go last in your pedal train.

POWER 

The Harp Shield operates off of a 9v battery or a 9vdc power adapter. To make it all just a little easier Lone Wolf is offering a power supply for US and EURO customers to power your pedal. The ac adapter requirements are 9V DC with a minimum 100mA output and a 2.1mm x 5.5mm connector with a negative center and the outer positive. The battery is switched off when an external power supply is used and the unit is always powered whenever the mic is plugged in. 

REVIEWS

Jason Ricci... ”Randy from The Lone Wolf Blues Company has made a new Anti Feed Back pedal. The Pedal is simple in design with one knob and extremely effective at fighting feed back. I would go as far to say that it eliminates feedback better than any existing devices I have tried whether they were aimed at amplified harmonica playing or other wise. The Pedal is small and a nice gold color, it's cheap too, hundreds cheaper than comparable box's. Randy is a great dude has a fantastic return policy and sincerely and truly cares what we all think of his stuff. The Harp Shield is True Bypass (No signal loss) and the same size as the other LWBC pedals (Except the Harp Attack). It can also be powered with a 9v converter or a battery! A few have been made (mine) and some sold instantly at SPAH but there here. For those of you who enjoyed the extra distortion/compression that came with the other blue AFB made, the "Harp Shield" coupled/ in conjunction with the "harp break" or "Harp Attack" by LWBC will produce the same results with more user manageability and control. For those who disliked the old AFB designs and it's tone changing properties the "Harp Shield" DOES NOT CHANGE TONE!” Jason Ricci

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