750W x 1 @ 2Ω

The R-Series amplifiers utilize Alpine’s advanced amplifier platform that takes the classic Class-D amplifier circuit and adds dual post-filter feedback loops for unmatched accuracy and control. This technology., originally launched in the premium X-Series amplifiers,, produces efficient power with enhanced dynamic range, qualifying the R-Series amplifiers to be Hi-Resolution Audio compliant.  This new technology minimizes audible imperfections like excessive phase shift and internal noise which can deteriorate sound quality. With an incredibly low phase shift of 46°, the R-A60F 4-channel amplifier delivers accurate imaging compared to well over 100° of phase shift by a competitive amplifier model. This superior phase curve ensures a proper sound stage among the singers and instruments. R-Series amplifiers have a built-in bandpass filter which lets you design an active speaker set-up without a separate processor. Improve the sound quality of component speakers by ditching your passive network.  Avoid added phase shifts and power losses by individually powering each component and assigning your own frequency bands for the incredible sound you’re looking for.  The “R” line of speakers and subwoofers have a heritage of sound quality you can hear from a block away, and the newly added R-Series amplifiers are no exception.  Aside from their best-in-class performance, these amplifiers are tuned to emphasize the characteristics of the R-Series speakers and subwoofers, giving you that legendary R-Series experience. Specifications Alpine’s Class D Amplifier Circuit CTA-2006-B Power Rating: 500W RMS x 1 (4omh, 14.4V, < 1% THD+N); 750W RMS x 1 (2ohm, 14.4V, < 1% THD+N) S/N ratio: > 85dB (ref. 1W into 4ohm) THD+N < 0.02% (ref. 1W into 4ohm) Frequency Response: 10Hz to 400 Hz (+/- 3dB) Damping Factor: > 1500 Remote bass knob compatible (requires RUX-KNOB.2, sold separately) Alpine R-A75M Manual

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HD-Series Monoblock Class-D Wide-Range Amplifier, 750-Watts x 1ch @ 1.5-4-Ohms This ultra-compact monoblock amplifier employs JL's Single-Cycle Control switching design and R.I.P.S. technology to deliver 750W of clean power into any impedance between 1.5 and 4Ω, giving you the highest degree of flexibility in designing your subwoofer system. Tight power supply regulation keeps distortion down and maximizes your bass quality. From a pure sound quality perspective, JL invites you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price. While targeted primarily to subwoofer applications, the HD750/1 is a wide-range amplifier and can also be used to drive high-performance mid-range speaker systems. This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls. General Specifications Frequency Response 6 Hz - 8 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >110 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W (Main Channels) >88 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >500 / 50 Hz Damping Factor @ 2 Ω >250 / 50 Hz THD+N @ Rated Power (Main Channels) <0.03% @ 4 Ω Input Voltage Range @ RCA Inputs Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High) Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 60 A (AFS, AGU or MaxiFuse™) @ 4 Ω 750 W RMS x 1 @ 3 Ω 750 W RMS x 1 @ 2 Ω 750 W RMS x 1 @ 1.5 Ω 750 W RMS x  JL Audio HD750/1 Brochure

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