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Clarion DPX2251

2-channel car amplifier — 180 watts x 2

Item # 020DPX2251

Clarion unleashes the power of your music with their high-tech DPX Series amps, which combine the efficiency of...

Clarion unleashes the power of your music with their high-tech DPX Series amps, which combine the efficiency of...

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Discontinued item

Item # 020DPX2251

Hunter
Need help?
Contact our Virginia-based experts.

About the Clarion DPX2251

Clarion unleashes the power of your music with their high-tech DPX Series amps, which combine the efficiency of digital signal processing with the fidelity of analog power delivery. The DPX2251 can drive your full-range or component speakers with real authority — it pumps out 180 watts to both of its channels. Or, if you'd like to power a sub, you can switch to single-channel mode for massive power output.

Clarion unleashes the power of your music with their high-tech DPX Series amps, which combine the efficiency of digital signal processing with the fidelity of analog power delivery. The DPX2251 can drive your full-range or component speakers with real authority — it pumps out 180 watts to both of its channels. Or, if you'd like to power a sub, you can switch to single-channel mode for massive power output.

The built-in "Precise Frequency Selector" high- and low-pass crossovers offer exacting control over the amp's output, so your speakers or subs play cleanly and efficiently, handling only the notes for which they were designed. Gold-plated power and speaker connectors give you solid, noise-resistant wiring connections.

In addition to the preamp inputs, speaker-level inputs let you add a DPX amp to just about any system, including your factory stereo. Dedicated circuitry on the inputs keeps things pure by reducing the likelihood of extraneous noise.

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Product highlights:

  • 2-channel car amplifier
  • 180 watts RMS x 2 at 4 ohms (300 watts RMS x 2 at 2 ohms)
  • 600 watts x 1 at 4 ohms in bridged mode
  • Precise Frequency Selector variable high-pass (50-575 Hz, 12 dB/octave) and low-pass (525-5.8k Hz, 12 dB/octave) filters
  • variable bass boost (0-15 dB at 45 Hz)
  • CEA-2006 compliant
  • preamp- and speaker-level inputs
  • gold-plated connector terminals
  • 4-gauge amp wiring kit recommended — wiring and hardware not included with amplifier
  • 12-7/8"W x 2-3/8"H x 10-1/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # DPX2251

What's in the box:

  • Two-channel amplifier with two 40A fuses installed
  • 12" Speaker level input harness
  • 4 Self-tapping screws (length=3/4")
  • 4 Speed clips
  • Owner's manual (Eng/Fren/Span)

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Features
Connections

Features

Class GH Amplifier: The Clarion DPX2251 is a Class GH amplifier, which gives you the efficiency of a Class D amplifier with the sound quality of a Class AB amp.

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4-ohm load, with 1% or less Total Harmonic Distortion (THD) plus noise at 20Hz to 20,000Hz. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using the CEA-2006 standard, the DPX2251 is rated at 200 watts x 2 @ 4 ohms, and 340 watts x 2 @ 2 ohms. Clarion publishes a more conservative power specification of 180 watts x 2 @ 4 ohms (with 0.1% THD) and 300 watts x 2 @ 2 ohms (1% THD).

Bridgeable: The DPX2251 amplifier's advanced circuitry design provides bridgeable outputs for use in a mono application. The amplifier is rated at 600 watts RMS x 1 channel at 4-ohms mono.

Operating Level Switch: A two-way switch lets you set the nominal operating level of the amplifier from 0.2 to 8V for the RCA inputs, or 500mV to 5V for the speaker-level inputs. Once you have set the correct operating level, you can then set the gain control.

Gain Control With Input Voltage Selector: This DPX-series amplifier accommodates a wide range of signal input voltages (0.2V to 8V). This wide range is split up into three ranges, which are accessible through an Input Voltage Selector switch and rotary gain dial. Depending upon the input source, you can select 0.2V to 0.6V, 0.6V to 2V, or 2V to 8V, using the 3-way switch on the left side of the amplifier. The gain rotary control operates within these voltage windows.

Note: Most decks, even 4V and 5V units, do not operate at full output voltage. Most decks will require the switch to be set in the 0.6V to 2V range.

Crossover: The Clarion DPX2251 amplifier includes a continuously variable 50-575 Hz crossover (or 525 Hz-5.8 kHz with the frequency multiplier set at 10x) to filter out the highs from your subwoofer, or the lows from your full-range speakers. The crossover has a 12dB/octave slope. You can set the crossover to LPF (low-pass filter) or to HPF (high-pass filter). For full range operation, you can set the X-Over mode to "Off" and the Frequency control has no effect.

Bass Boost: The amplifier features a narrow-frequency band bass boost circuit. This Bass Boost control lets you tune low-frequency audio response to compensate for a less than ideal subwoofer enclosure design. The added boost produces rich, full bass tones that are normally difficult to reproduce in the car audio environment. The DPX2251 features a fixed-frequency Bass Boost at 45Hz that is adjustable from 0 to 15dB.

Protection Circuitry: The amplifier has a three-way protection circuitry. The amplifier will shut down when the operating temperature is too high, during over voltage and when the speaker outputs are shorted. A red LED on the left side of the amplifier glows when the amp has shut down and is in protection mode.

Aluminum Heat Sink: The DPX2251 utilizes an aluminum heat sink for efficient heat dissipation so the amplifier stays cool during operation.

Soft Start Turn-On: The amplifier's remote turn-on lead features "Soft Start" which mutes the amplifiers output during turn-on to prevent any turn-on thump.

Speaker-level and Line-level Inputs: The amp provides both line-level and speaker-level inputs. If connecting a receiver with line outputs, you can use an RCA stereo patch cable. If the receiver does not have line outputs, you can splice the supplied high-level speaker input harness to the receiver's left and right speaker wires, then plug the harness into the amplifier.

Gold-plated Terminals: The DPX2251 features gold-plated connections, including the set-screw terminals for power, ground, remote, and speakers, as well as the RCA line inputs. These gold-plated terminals prevent corrosion and provide excellent signal transfer. The RCA inputs also feature ground loop isolation to help prevent noise from entering your system.

Connections

Left Side:

  • High Input: 5-pin plug-in clip for use with the supplied high-level speaker input harness
  • Low Input: 1 pair of stereo RCA inputs
  • Remote Level: RJ-25 jack (6-pin modular phone jack) for use with optional BC-2 remote bass control module (item # 020BC2)

Right Side:

  • GND (ground): set-screw terminal (accepts up to 4-gauge wire)
  • REM (remote turn-on): set-screw terminal (accepts up to 8-gauge wire)
  • +12V (power): set-screw terminal (accepts up to 4-gauge wire)
  • Fuses: Two 40-amp fuses (inserted)
  • Speaker Terminals: 2 pairs of gold-plated set-screw terminals. A label indicates left + and -, right + and -, and bridged + and - terminals

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