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Harmony HB 501D II
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HB 501D II

Mono Class D Amp, 1 x 500W (2 Ohm)

$339.99MSRP · USD

The HB 501D II is a mono Class D amplifier delivering 1 × 300 W RMS at 4 Ω and 1 × 500 W RMS at 2 Ω, optimized for subwoofer duty. The control panel provides gain (0.25 V – 6 V), a variable LP crossover (30 – 80 Hz), a subsonic filter (20 – 50 Hz), and a variable bass boost (0 – 12 dB). A bass-level remote is included for instant dashboard adjustment.

Key Features

  • Mono Class D amplifier: 1 × 500 W RMS at 2 Ω
  • Variable LP crossover: 30 – 80 Hz
  • Subsonic filter: 20 – 50 Hz
  • Variable bass boost: 0 – 12 dB
  • Gain control: 0.25 V – 6 V; includes bass remote
  • 2-Ch RCA inputs, input sensitivity 250 mV – 6 V

Power Output

RMS Power (4 Ω)1 × 300 W
RMS Power (2 Ω)1 × 500 W
Amplifier ClassClass D
Channels1

Performance

S/N Ratio> 90 dB
THD< 0.1%
Frequency Response10 Hz – 180 Hz
Input Impedance20 kΩ
Input Sensitivity250 mV – 6 V
Supply Voltage12 V – 14.4 V

Connectivity / Controls

RCA Inputs2-Channels
High-Level InputsNone
Gain Control6 V – 0.25 V
CrossoverLP
Crossover Frequency30 Hz – 80 Hz
Subsonic Filter20 Hz – 50 Hz
Bass Boost0 – 12 dB
Bass RemoteIncluded

Dimensions

Unit Dimensions175 × 115 × 45.5 mm (L × W × H)

Product Details

BrandHarmony
SeriesBlue Note
ModelHB 501D II
SKUHB501DII
EAN8033373006647
Inquire to Order More Blue Note

Genuine product · Authorized U.S. dealer · Drop-shipped direct

Documentation

Product Information at Zapco.com