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Cadence QRS 1.1800D

1800W RMS QRS Series 1 ohm Stable Monoblock Class-D Amplifier w/ Bass Knob Included

Cadence
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• 800 Watts RMS x 1 @ 4 ohm
• 1200 Watts RMS x 1 @ 2 ohm
• 1800 Watts RMS x 1 @ 1 ohm
• Low Pass and Subsonic Filters
• 0-15 Bass BOost
• Aluminum Heatsink
• Dimensions: 15.55" W x 7.56" L x 2.32" H

Learn more about the qrs11800d

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This item has been discontinued

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Description


Cadence brand icon

Authorized dealer

General Features:

  • Cadence QRS Series QRS 1.1800D
  • Class-D 1 ohm Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohm: 800 watts x 1 chan.
    • 2 ohm: 1200 watts x 1 chan.
    • 1 ohm: 1800 watts x 1 chan.
  • Total power output: 1800 watts
  • Pulse Width Modulated MOSFET power supply
  • Wired remote bass level control included
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • Mono channel operation
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink
  • Input sensitivity: 100mV - 6V
  • Frequency Response: 10 - 250 Hz
  • Total Harmonic Distortion (THD): .05%
  • Signal to Noise Ratio: >86 dB
  • Variable low-pass filter: 50 - 250 Hz, 12/24 dB/octave
  • Subsonic filter: 10 - 50 Hz, 12/24 dB/octave
  • Variable Bass Boost: 0 to +15 dB bass boost
  • Fuse Rating: External, sold separately
  • 1/0gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 15.55"W x 7.56"L x 2.32"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

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Specifications & Details


Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
800 watts x 1 channel
RMS Power @ 2 ohms
1200 watts x 1 channel
RMS Power @ 1 ohm
1800 watts x 1 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
1 - Mono
Total RMS Power Output
1800 watts
Maximum Input Gauge Size
1/0 AWG
Minimum Impedance Unbridged
1 ohm
THD at Rated RMS Power
.05%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
Subsonic
Low-Pass Crossover Frequency
80 - 250 Hz
Subsonic Filter
10 - 50 Hz
Signal-to-Noise Ratio
>86 dB
Bass Boost
0 - 15 dB
Remote bass/level controller
Yes
Fuse Rating
External Only, Not Included
Total Fuse Rating
¯\_(?)_/¯
Strappable
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

QRS 1.1800D

Weight:

15.00lbs

Internal SKU:

qrs11800d

Internal Product ID:

149917

Customer Ratings & Reviews


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.