JL Audio HD900/5 Open Box Complete (Very Good, Used)

Open Box (Complete): Item was previously installed and used. Item is in good condition and has been tested to be fully functional. Nonessential accessories (screws) may have been replaced with generic parts.

HD900/5 Features:

• JL Audio HD Series 5-Channel Class D Amplifier
• ¹Main Channels RMS Power Rating (11V-14.5V):
• 4 ohm: 100 watts x 4 chan.
• 3 ohm: 75 watts x 4 chan.
• 2 ohm: 75 watts x 4 chan.
• 1.5 ohm: 75 watts x 4 chan.
• ¹Bridged RMS Power Rating (11V-14.5V):
• Bridged, 8 ohm: 200 watts x 2 chan.
• Bridged, 6 ohm: 150 watts x 2 chan.
• Bridged, 4 ohm: 150 watts x 2 chan.
• Bridged, 3 ohm: 150 watts x 2 chan.
• ¹Subwoofer Channel RMS Power Rating (11V-14.5V):
• 4 ohm: 500 watts x 1 chan.
• 3 ohm: 500 watts x 1 chan.
• 2 ohm: 500 watts x 1 chan.
• 1.5 ohm: 500 watts x 1 chan.
• Class D, switching type with patented Single-Cycle Control technology
• Pulse width modulation-regulated switching power supply
• LED power (green), protect (red) and low impedance (amber) indicators
• Removable Power/Ground and Speaker connectors
• Brushed aluminum finish chassis
• Compact, stackable chassis design
• Black powder-coated, gasketed cover
• RealSink Vertical, cast alloy fins effectively dissipate heat
• Advanced Thermal Rollback protection system
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle Control - high-fidelity, full-range class D
• Compares the real PWM waveform and then corrects it in each and every cycle
  (over 400,000 times per second)
• 80% efficiency at 1/2 rated power for the whole amplifier, including its power supply
• 60% less current draw than a typical Class A/B car amplifier of equal power
• Less generated heat, smaller chassis than a similarly powerful Class A/B design.
• Noise-killing, highly flexible differential-balanced inputs
• Speaker level inputs via RCA (JL Audio XD-CLRAIC2-SW required and sold separately
• ²Remote bass level input (JL Audio HD-RLC required and sold separately)
• Optional stacking equipment for HD amplifiers: JL Audio HD Stack Kit
• Selectable input voltage/sensitivity:
• Low level: 200mV - 2V
• High level: 800mV - 8V
• Selectable input modes: 2 Ch. / 4 Ch. / 6 Ch.
• Selectable State-variable slope: 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley
• Cutoff Freq. Range: Continuously variable (All Ch): 50 - 500 Hz
• Selectable Infrasonic Filter (Sub Ch): Off / 30 Hz
• Total Harmonic Distortion: <0.03% @ 4Ω per main ch., <0.05% @ 4Ω sub ch. (Average at 1kHz)
• Signal to Noise Ration: (20 kHz bandwidth)
• Referred to Rated Power: 108 dBA
• Referred to 1 Watt: 88 dBA
• Frequency response: 12 - 28,000 Hz (+0, -1 dB)
• Damping Factor Ch. 1-4: >400 @ 4Ω/50 Hz, >200 @ 2Ω/50 Hz
• Damping Factor Sub Ch.: >800 @ 4Ω/50 Hz, >400 @ 2Ω/50 Hz
• Recommended fuse rating: 60A x 1 (inline, not included)
• Dimensions: 10.74"L x 7.85"W x 1.93"H
• ³4 gauge OFC power and ground wiring is required 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.
• Authorized Internet Dealer
• 1-year Manufacturer's Warranty

• ¹If you connect a load higher than 4Ω nominal per channel in stereo mode (or 8Ω in bridged mode), power will drop by half with every doubling of impedance above 4Ω stereo / 8Ω mono. If you connect a load lower than 1.5Ω nominal per channel in stereo mode (or 3Ω in bridged mode, the amplifier protection circuitry activates a "safe" mode which reduces amplifier power to protect the circuitry from failure (the LED status indicator on the control panel will light up amber to indicate that this has happened). See page 15 for details.
• ²When connected to the amplifier, the HD-RLC operates as follows. At full counter-clockwise rotation, the audio will mute completely. At full clockwise rotation the level will be the same as if the HD-RLC was not connected at all. In other words, it operates strictly as a level attenuator.
• ²The RBC-1 Remote Bass Control used with JL Audio Slash, Slash v2, e-Series, A-Series and G-Series amplifiers is NOT compatible with the HD Series amplifiers. If you attempt to connect an RBC-1 to an HD amplifer, the control will not work. You must use the HD-RLC controller.
• ³We do not recommend the use of "copperclad aluminum wire" or "CCA" wire because this wire is significantly less conductive than pure copper wire. Only use pure copper power wire, such as JL Audio's Premium Power Wire. Tinned copper wire (silver color) is acceptable as the tin-plating is only a very minor component of the wire.
• ³The HD900/5's "+12 VDC" and "Ground" connections are designed to accept 4 AWG power wire. 4 AWG pure copper wire is the minimum recommended wire size for this amplifier. Use of smaller gauge wire (including cheap wire that is fraudulently sold as 4 AWG wire) can create a fire hazard.