Product Description

Hartke HD508

Packing four 8″ Hartke patented HyDrive speakers and a 500-watt Class D amplifier into a sleek cabinet that weighs only 49 pounds, the HD508 brings exceptional bass tone to any rehearsal, stage or studio.

Key Features

• Lightweight Class D combo amplifier that weighs 49lb
• 500 watts of power
• Four 8″ HyDrive paper/aluminum hybrid cone drivers
• Top-mounted control panel
• Hartke’s Shape EQ knob with variable filter
• 3-band (Bass, Mid, Treble) EQ
• XLR direct output
• 1/8″ stereo Aux input
• 1⁄4″ headphone output
• 1⁄4″ bass input
• Effects loop
• Perforated steel grille
• Molded strap carry handle
• Two metal side carry handles
• Four removable casters included

The HyDrive Design

HyDrive speakers feature carefully crafted paper/aluminum hybrid cone drivers. The hybrid makeup delivers an exceptional blend of warmth and attack that can’t be attained by traditional all-paper bass speakers. And specific to the HD508, packing four 8″ HyDrive speakers into a single cabinet creates a combined cone area that is larger, as well as able to reproduce a wider audio range, than that of a single 15″ speaker.

Power and Portability

In addition to the impeccable sound of the HyDrive speakers, the HD508 offers tremendous power in a highly portable design. Its lightweight Class D amplifier produces an earth-shattering 500 watts of power capable of filling any rehearsal room, recording studio or performance venue. And with a total weight of only 49 pounds, the HD508 is easy to transport with its molded strap handle, metal side handles, or removable casters.

Shape Your Tone

The HD508 includes a selectable Shape circuit that allows you to dial in a specialized EQ curve designed to improve tone by selectively boosting and cutting across the frequency range. In addition, a 3-band EQ provides further customization options.

General Specifications

• Rated Output Power: 500 watts Peak / 250 watts RMS
• Rated Input Level: 77.46mv rms (@1kHz)
• Total Harmonic Distortion: 0.54% (@1dB below rated output, 1kHz typical)
• Signal-to-Noise Ratio: 1W/49.3dBu (1Wrms @1kHz)
• Signal Gain Speaker Output: 37.1Vrms
• Signal Gain to Direct Output: 4.2Vrms
• Bass Control: 70Hz
• Midrange Control: 700Hz
• Treble Control: 5kHz
• Shape Control: 100Hz – 900Hz
• Dimensions: 506mm X 305mm X 560mm / 20″ X 12″ X 22″
• Weight: 22.2kg / 49lb