#5 Common System Problems

To get more acoustic gain without increasing the susceptibility to regenerative feedback, I should:

• move the mic closer to the source

• turn up the mixers volume control

• turn up the amplifier

Which of the following will be most susceptible to regenerative feedback?

• hand-held vocal mic

• head warm mic

• ensemble or choir mic

• guitar cabinet mic

For a directional microphone to be effective at reducing regenerative feedback, it must be _____________.

• high quality

• aimed properly

• held at arms length

• pointed at the loudspeaker

Which statements are true regarding feedback filters?

• they can help if used properly

• they can ruin the sound quality if not used properly

• they make guitars sound better

• they violate the laws of physics

Electricity only flows if it can return to its _______.

• source

• battery

• circuit

• chassis

Depending on the circuit type, the following terms may be used for the return path.

• hot

• ground

• terminal

• neutral

• common

Metal appliances can be made safe by employing a _____________.

• safety ground

• Ground Fault Circuit Interrupter

• double insulation

• "cheating plug"

• lighting ron

A "ground loop" can act like a(n) ______________.

• signal

• output

• feed through

• antenna

Under some conditions, cable shields can cause hum and buzz problems.

• True

• False

The best way to break a ground loop is to ____________.

• defeat the safety ground on a power cord

• use a "3-to-2" prong adapter

• lift the cable shield at the input