This is a VERY lightly used power amplifier.
The QSC PLX 1804 packs a huge punch of clean power into 13lbs.
I used this as part of my bass rig for a short amount of time. It had been gigged exactly twice/ I am the second owner, and it came to me with low hours on it.
It has been racked its entire life and has performed flawlessly.
Show a tiny but of rack wear on the ears as any piece of gear has that has lived in a rack.
Ships in the original box with all manuals and warranty paperwork.
SPECIFICATIONS PLX1804
Stereo Mode
8 ohms (each channel) *
FTC 20 Hz - 20 kHz 0.05% THD
EIA 1 kHz 0.1% THD
550 W
600 W
Stereo Mode
4 ohms (each channel) *
FTC 20 Hz - 20 kHz 0.05% THD
EIA 1 kHz 0.1% THD
800 W
900 W
Signal to Noise (20 Hz - 20 kHz) -106 dB
Input Sensitivity @ 8 ohms 1.20 Vrms
Gain @ 8 ohms 35 dB
Output Circuitry 2-Tier Class H
Distortion (SMPTE-IM) Less than 0.02%
Typical Distortion
1/8 rated power, 20 Hz-20 kHz
Full rated power, 20 Hz-20 kHz
Less than 0.02%
Less than 0.02%
Frequency Response 20 Hz-20 kHz, -0.5 dB
Damping Factor Greater than 200
Input Impedance 20k ohms balanced
10k ohms unbalanced
Input Clipping 5.5 Vrms (+15 dBu)
Cooling Variable-speed fan, rear-to-front air flow
Input Connectors, each channel 3-pin XLR and 1/4" TRS balanced
Output Connectors, each channel Neutrik® NL4 Speakon®
(Both channels available on Ch 1 output)
Rear Panel Switches Circuit Breaker
Front Panel Controls Detented Gain Attenuator: 0 to ∞ dB
Power On/Off
Front Panel Indicators Clip: Red LED
-10: Green LED
Signal (-35 dB): Green LED
Power: Blue LED
PROTECTION
Amplifier Protection Full short circuit, open circuit, thermal, infrasonic, ultrasonic, and RF protection
Stable into reactive or mismatched loads
Load Protection On/off muting, DC-fault power supply shutdown
Infrasonic -3 dB, 6 Hz
DC fault Power supply shutdown
Ultrasonic -3 dB, 80 kHz
Short Circuit Muting
Thermal Limiting at 85° C, Muting at 90° C
Over Current Active clip limiting
AC circuit breaker
High Line Standard +15%, survive +25%
Low Line -40%
PHYSICAL
Dimensions
Height
Width
Depth, Rack mounting surface to rear panel
Overall Depth
3.5" (8.9 cm) 2 rack spaces
19" (48.3 cm)
8.95" (22.7 cm)
11" (27.9 cm)
Weight 13 lbs. (5.9 kg) net
18 lbs. (8.2 kg) shipping
Agency Approvals CE, FCC, cUL, UL
* CE versions may have up to 12% (0.5 dBw) less power due to special construction to meet EN-61000 AC harmonic limits
CURRENT CONSUMPTION PLX1804
1/8 Power (pink noise) 8 ohms
4 ohms 5.7A/120V
9.4A / 120V
1/3 Power (pink noise) 8 ohms
4 ohms 10.4A/120V
16.5A / 120V
Full Power 8 ohms
4 ohms 20A/120V
32A / 120V
Notes Long term, breaker-limited to 15A/120V
PLX1804 Front
PLX1804 Rear
$450 shipped CONUS
