Peavey KB/A 30 - Manual (Page 7)

PREAMP SECTION
The following preamp specs are measured at 1 kHz
with the master EQ set flat at 0 dB, all gain switches
in the out position, nominal signal levels are with
channel level controls set at five. Minimum levels are
with channel level controls set at 10.
CHANNEL ONE INPUTS
Low-Z Input Impedance: 5k ohms
Nominal input Level: -30 dBV, 32 mV RMS
Minimum input Level: -40 dBV, 10 mV RMS
High-Z Input Impedance: 5k ohms
Nominal input level: -30 dBV, 32 mV RMS
Minimum input level: -40 dBV, 10 mV RMS
CHANNEL TWO and CHANNEL THREE INPUTS
Input impedance: 22k ohms
Nominal input level: -21 dBV, 90 mV RMS
Minimum input level: -40 dBV, 10 mV RMS
CHANNEL FOUR INPUT
Input impedance: 10k ohms
Nominal input level: 0 dBV, 1 V RMS
Minimum input level: -25 dBV, 56 mV RMS
EFFECTS PATCH : (STEREO JACK TIP)
Function: Low level effects send
Load impedance: 1k ohms or greater
Nominal output: -10 dBV, 316 mV RMS
PRE EQ PATCH: (STEREO JACK RING)
Function: Low level effects return
Impedance: High-Z, 10k ohms
Input level: -10 dBV, 316 mV RMS
(Switching stereo jack provides patch output to patch
input connection when not used.)
LINE OUTPUT:
Function: High level signal send
Load impedance: 100 ohms or greater
Nominal output: -6 dBV, 0.5V RMS
Maximum output: 18 dBV, 8V RMS
(XLR pin 2 positive/pin 3 negative)
HEADPHONE OUTPUT: (STEREO JACK)
Load impedance: 8 ohms or greater
Nominal output: 100 mW
(Switching jack will disconnect internal speaker when
headphone plug is inserted.)
The following specs measured at nominal
setting, all phone jack inputs terminated with
47k ohms.
FREQUENCY RESPONSE
(Channel input/preamp output at 1 V RMS level)
+0, -3 dB, 20 Hz to 20 kHz
PREAMP DISTORTION
(Channel in/preamp out, 20 Hz to 20 kHz at
1 V RMS)
Less than .05% THD, typically below .01%
PREAMP HUM AND NOISE
Greater than -95 dBV
CHANNEL EQUALIZATION
±15 dB at 80 Hz and 10 kHz, shelving
POWER AMPLIFIER SECTION
POWER AT CLIPPING (TYPICALLY)
40 W RMS into 8 ohms/low channel
10 W RMS into 8 ohms/high channel
(Both channels driven, 5% THD, 3.5 kHz,
120 V AC Line)
TOTAL HARMONIC DISTORTION
Less than 0.3%, 30 W RMS/low
channel into 8 ohms, 50 Hz to 2 kHz
Less than 0.3%, 7 W RMS/high
channel into 8 ohms, 5 kHz to 20 kHz
(Typically below 0.2%)
FREQUENCY RESPONSE
+0,-1 dB, @ 30 W RMS/low channel into
8 ohms, 50 Hz to 2 kHz
+0,-1 dB, @ 7 W RMS/high channel into
8 ohms, 5 kHz to 20 kHz
HUM and NOISE
Greater than 90 dB below rated power
POWER CONSUMPTION (DOMESTIC)
100 W at 120 V AC, 50/60 Hz
CROSSOVER
Fixed, 18 dB/octave, 3.5 kHz crossover
frequency
KB/A ™ 30 SPECIFICATIONS
ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
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