Speakers, Preamps, DI Boxes

Question 1

____ signal level should hit the preamp

Answer 1

Mic

Question 2

Hi Z (impedence) input on preamp use it for

Answer 2

Instruments not mic

Question 3

Yamaha NS10 speakers are

Answer 3

Passive and need amplifiers, connected by unbalanced circuit, carrying +40 speaker level signal

Question 4

How DI conversión is done

Answer 4

Passive - transformer
Active - powered amp

Question 5

Passive speakers vs active

Answer 5

Passive no power needed
Active amp built in, power needed

Question 6

Different uses of a DI

Answer 6

• unbalanced to balanced signals, like instrument to mic or line level
• protect signal from interference
• reamping

Question 7

Speaker level signals

Answer 7

The voltage is huge (40 volts) so noise isn’t really a problem. So they don’t need to be balanced. Speaker cables have 2 not 3 prongs

Question 8

Noise floor

Answer 8

The amount of sound, measured in decibels, that a piece of gear naturally produced when you’re not running a signal through it

Question 9

3 room modes

Answer 9

axial - parallel , tangential - 4 walls, and oblique - 6 walls. The most imporant one when treating a room is axial, because is the strongest one and significantly impact the way low frequencies sound in a room.