Description
JL Audio MHD750/1
Monoblock Class D Marine Wide-Range Amplifier, 750 W x 1 @ 1.5-4 Ω
This ultra-compact monoblock amplifier employs our Single-Cycle Control switching design and R.I.P.S. technology to deliver 750 W of clean power into any impedance between 1.5 and 4 Ω, 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, we invite 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 marine amplifier features white and gray powder-coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment.
Rated Continuous (RMS) Power @ 14.4 V
| @ 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 1 |
Rated Continuous (RMS) Power @ 12.5 V
| @ 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 1 |
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™) |
Physical Specifications
| Height (H) | 1.93 in / 49 mm |
| Width (W) | 10.74 in / 273 mm |
| Depth (D) | 8.29 in / 211 mm |
| Net Weight | 6.6 lb / 2.99 kg |
Signal Processing
| Filter Mode(s) | Low-Pass or High-Pass |
| Filter Slope(s) | 12/24 dB/octave |
| Filter Frequency Range | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometer | Yes |
| Filter Defeat Function | Yes |
| Infrasonic Filter | 30 Hz, defeatable |
| Bass Boost EQ | No |
| Output Polarity Switch | Yes |
| Remote Subwoofer Level Control | Optional (HD-RLC) |
| Remote Bass EQ Boost Control | No |
| Pass-Through Preamp Output | Buffered |
Used & Open Box Frequently Asked Questions
- What does used mean? Used products may be unused customer returns that are essentially "new" items, or they may be previously installed products that were returned under warranty or during our return policy period.
- What is the warranty? All of our used & open box items come with a 90-day warranty.
- What's it look like? All of our used items are inspected and graded by our returns team at our facilities. They will test them and grade them to one of four standard gradings: Open Box, Used Very Good, Used Good, and Used Acceptable. Please see the following descriptions of each grade - also note that if an item falls under ANY of the criteria for a certain grade, even though the rest of the product is better, we will give it the lowest grade.
- Open Box An item in perfect working condition. Original protective wrapping may be missing, but the original packaging is intact and in good condition with minor damage possible. Instructions are included.
- Used Very Good A well-cared-for item with limited use, remains in good working condition. The item may show some limited signs of wear,small scratches,cosmetic blemishes. Item may arrive with damaged packaging or be repackaged and could be missing some accessories.
- Used Good The item shows wear from use, remains in good condition and functions properly. May have damaged packaging or be repackaged. It may be marked, have identifying markings on it, have minor cosmetic damage. It may be missing some parts or accessories.
- Used Acceptable The item is fairly worn but continues to function properly. While repackaged; signs of wear can include aesthetic issues; scratches, dents. The item may have markings on it or show signs of previous use. Item may be missing some parts or accessories.
- Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.
