System Specifications, Preamplifier Section

NITROBASS™

SPECIFICATIONS

SYSTEM SPECIFICATIONS:

Mains Fuse = 8 amps

Mains Voltage = 120 VAC 60 Hz Power Consumption = 350 watts

Hum and noise: Typically greater than -89 dB unweighted with controls set as follows…

Pad = Passive

Bright = Normal Pre gain = 5 Contour = 0 Low = 0

Mid = 0

Mid Shift = 1kHz High = 0 Volume = 5

POWER AMPLIFIER SECTION:

PROTECTION:

Electronic current limit protection circuit. Thermal protection circuit.

D.C. crowbar protection circuit.

DDT speaker protection circuit with defeat switch. Variable speed fan, thermally controlled

GENERAL INFORMATION:

Minimum load = 2 ohms

Input sensitivity: 1.0 VRMS

Two 1/4" speaker jacks in parallel

RATED POWER OUTPUT:

450 watts (30.00 V RMS) into 2 ohms

300 watts (34.64 V RMS) into 4 ohms

170 watts (36.88 V RMS) into 8 ohms

TYPICAL POWER OUTPUT

475 watts (30.82 V RMS) into 2 ohms with no more than 1% THD+N

308 watts (35.10 V RMS) into 4 ohms with no more than 1% THD+N

177 watts (37.63 V RMS) into 8 ohms with no more than 1% THD+N

NOISE:

Typically greater than 102 dB below full power @ 8 ohms unweighted

DDT Dynamic Range:

Typically greater than +15 dB

FREQUENCY RESPONSE:

+0/-0.61 dB, 100mW to 160 W RMS, 20 Hz to 20 kHz (8 ohm load, typically below 0.2% THD+N)

PREAMPLIFIER SECTION:

SETTINGS FOR MEASUREMENTS UNLESS OTHERWISE NOTED:

Pad = out (Passive)

Bright = out (Normal)

Pre-Gain = 5 (12 o’clock)

Contour = 0 (fully counterclockwise)

Bass = 0 (12 o’clock)

Mid = 0 (12 o’clock)

Mid Shift = 0 (12 o’clock)

High = 0 (12 o’clock)

Master Volume = 10 (fully Clockwise)

Line Out Level = 10 (fully Clockwise)

INPUT SENSITIVITY (Level to achieve full power):

With Pad Out...

Nominal input: 100 mV RMS

Minimum input: 9 mV(pre gain and master fully CW)

Maximum input: 3.0 V(maximum signal at input before clipping occurs)

With Pad -10 dB in:

Nominal input: 315 mV RMS

Minimum input: 28 mV (pre gain and master fully CW)

Maximum input: 9 V (maximum signal at input before clipping occurs)

EQUALIZATION:

Bright boost: + 8 dB @ 5 kHz

Contour: Special frequency compensation

Bass: ± 15 dB @ 30 Hz, Shelving type Eq

Mid : ± 15 dB @ 200 @ 2 kHz (Mid shift control determines center frequency)

Mid Shift: 200 to 2 kHz

High: ±15 dB @ 8 kHz, Shelving type Eq

TUNER SEND:

Instrument level through a buffer

LINE OUT:

-∞ to -10 dB (for nominal input).

Level is dependent on level control setting and pre gain setting

EFFECTS LOOP:

Set for -10 dB (0.315 V RMS) with pre @ 5, Master @ 10 Controlled via footswitch, ground tip to defeat.

PREAMP OUTPUT:

1 V RMS nominal