JL Audio HD Series HD750/1

Mono subwoofer amplifier — 750 watts RMS x 1 (New Stock)

Save with a select JL Audio enclosed subwoofer with a select JL Audio enclosed subwoofer
  • JL Audio HD Series HD750/1


  • JL Audio HD Series HD750/1

  • JL Audio HD Series HD750/1

Crutchfield OMC logo
We don't check this item for fit or compatibility.

Our take on the JL Audio HD Series HD750/1

by Gabrielle Thorndyke
JL Audio

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

SAFETY RECALLNote from Crutchfield: We've confirmed that the HD750/1 amps currently in stock are not part of this recall from JL Audio. If you bought an HD750/1 amp after July 2008, please check with JL Audio to see if your amp needs to be sent back for repair.

Small amps, big power

JL Audio's HD Series amplifiers offer high performance from an ultra-compact chassis. These Class D amplifiers use less power, take up less space, and generate less heat than traditional amp designs — you can even stack them up to create a sweet-looking installation.

View of control panel

Read more

JL Audio technology goes to work for you

HD Series amplifiers reproduce your music with exceptional accuracy, so you'll hear high-fidelity sound even under the most demanding conditions. JL Audio uses Single Cycle Control™ technology to eliminate the excessive signal distortion that's plagued Class D amplifiers in the past. Differential-balanced inputs eliminate noise before it hits the preamp stage, and allow you to connect the amp to just about any in-dash stereo. You'll hear clear, true, studio-quality audio, exactly what you expect from JL Audio.

Reliable power for your subs

The HD750/1 class D mono amplifier pushes 750 watts RMS to your sub, from a 2" tall chassis that's about the size of a sheet of computer paper. The regulated power supply allows this amp to deliver its rated power to a wide range of impedances (1.5 to 4 ohms), even when voltage levels drop during heavy use. Removable power and speaker plugs make it easy to pop this amp out if you need the space in your cargo area.

Some extra touches

You can use JL Audio's optional stack kit to mount one HD Series amp on top of another, so you can maximum power from minimum space. JL's wired remote allows you to control your HD amp's volume from your front seat.

your description goes here


  • mono subwoofer amplifer
  • 750 watts RMS x 1 (rated power from 1.5 to 4 ohms)
  • variable high- and low-pass filter (50-500 Hz 12 or 24dB/octave)
  • subsonic filter and output polarity control
  • removable power and speaker plugs
  • optional wired remote for level control
  • Class D amplifier design
  • MOSFET power and output stages
  • differential-balanced inputs eliminate noise from your vehicle's electrical system
  • speaker- and preamp-level inputs (speaker-level input requires an optional adapter)
  • preamp outputs
  • 4-gauge power and ground leads and a 80-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 80-amp in-line fuse between the distribution block and the amplifier is recommended
  • 10-13/16"W x 1-15/16"H x 8-13/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
RMS Power Output (Watts x Channels) 750 x 1
Peak Power Output (Watts x Channels) N/A
Power at 2 Ohms (Watts x Channels) 750 x 1
Bridged Power (Watts x Channels) N/A
Minimum Impedance Bridged N/A
Minimum Impedance Unbridged 1.5
Best Frequency Response 6-30k Hz
THD at Rated RMS Power 0.03%
Signal to Noise Ratio 111 dB
Input Voltage 14.5v
Amplifier Class D
Low-Pass Crossover Frequency 50-500 Hz
Low-Pass Slope (dB/octave) 12/24 dB
High-Pass Crossover Frequency 50-500 Hz
High-Pass Slope (dB/octave) 12/24 dB
Bass Boost No
Bass Boost Frequency N/A
Fan Cooled No
Fuse Rating 60
Speaker Level Inputs RCA (adapter req)
Preamp Outputs 1 pair
Width (inches) 10-13/16
Height (inches) 1-15/16
Depth (inches) 8-13/16
Parts Warranty 2 Years
Labor Warranty 2 Years
Product Research
What's in the box?

Download owner's manual

  • Monoblock full-range class-D amplifier
  • Power/Ground/Turn-On plug
  • Speaker connection plug
  • 4 Mounting brackets
  • 2mm Allen-wrench
  • 2.5mm Allen-wrench
  • 5mm Allen-wrench
  • 4 Mounting bolts
  • Owner's Manual

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.



Monoblock Full-Range Class-D Amplifier: The JL Audio HD750/1 is a very powerful and compact monoblock (single channel), full-range amplifier utilizing patented Single Cycle Control Class D technology. This technology delivers reference grade sonic performance while requiring far less current from the vehicle's electrical system than a conventional amplifier. Unlike most monoblock amplifiers, the HD750/1 is a full-range design so it can be used as a subwoofer amplifier or as a very powerful full-range or satellite amplifier using a second 750/1 to form a stereo pair.

Amplifier Rating: The JL Audio HD750/1 Class D monoblock, full-range amplifier is rated at 750 Watts RMS x 1-channel in 1.5 to 4-ohm at 20 to 20kHz with a signal-to-noise-ratio of 111 dB and a total harmonic distortion of 0.03% while receiving 11 to14.5 Volts.

High-Fidelity Class D (HD) With Single-Cycle Control: The JL Audio HD750/1 utilizes patented Single Cycle Control Class D technology for all channels. This technology delivers reference-grade sonic performance while requiring far less current from the vehicle's electrical systems than a conventional amplifier. Single Cycle Control is a unique approach to controlling a full-range Class D amplifier. By tracking the audio signal, comparing it to the real PWM waveform and then correcting it in each and every cycle (over 400,000 times per second), a multitude of distortion-causing mechanisms can be tightly controlled to enable pristine amplification. While there are certainly less expensive ways to make a full-range switching amplifier, no other Class D control system works faster or more accurately than Single Cycle Control.

Compact/Efficient Design: The JL Audio Class D amplifier on average is 13% smaller overall and over 1/2-inch shorter in height than most class AB amplifiers. The HD750/1 features outstanding overall efficiency (80% at 1/2 rated power) which allows for huge power from a tiny chassis and is easy on your vehicle's charging system, drawing 60% less current than a class AB design of equal power.

R.I.P.S. (Regulated, Intelligent Power Supply): R.I.P.S. stands for "Regulated, Intelligent Power Supply" and is a central feature of the JL Audio HD amplifier. The JL Audio R.I.P.S. System ensures consistent power delivery over a wide range of battery voltages and load impedances. This technology provides optimum power at any impedance level between 1.5 ohm to 4 ohm per channel and at any vehicle voltage level between 11V and 14.5V.

  • Regulated Power Supply: "Regulated" means that the power supply adjusts its operation so as to maintain the amplifier's rated power output and low distortion operation over a wide range of vehicle voltages (11V-14.5 V). This allows the JL Audio HD amplifier's the rail voltage and clean power output to remain stable in real-world car-audio systems, resulting in superior fidelity and stability.
  • Intelligent Power Supply: The "Intelligent" portion of the R.I.P.S. System is a circuit that actually monitors output current to optimize the amplifier's output power over a wide range of load impedances (1.5 ohm to 4 ohm per channel). The R.I.P.S. System detects the actual impedance being driven and adjusts output rail voltages to deliver optimum output. The entire process is seamless, automatic, and results in incredible dynamics for satellite channels and consistent power output for a wide range of subwoofer configurations. It also takes into account the real impedance of your car-audio system, rather than relying on often inaccurate assumptions based on a speaker's rated impedance.

RealSink Heat Management With Rollback Protection: This JL Audio amplifier employs an advanced type of heat management, called RealSink. This features takes advantage of convection and radiation effects to remove heat from the amplifier circuitry. For optimum cool performance, the vertical heat sinks located at the sides of the amplifier should be exposed to as large a volume of air as possible. If a JL Audio HD amplifier should ever reach an unsafe temperature, its unique Advanced Rollback Protection circuit also adjusts power until the amplifier cools down, without ever shutting your music down.

Differential-Balanced Inputs: The JL Audio amplifier features differential-balanced input architecture to effectively control noise and ensure compatibility with a wide variety of source units, including many OEM systems. Without resorting to line output converters, you can directly connect most OEM source units to the JL Audio amplifier without creating any noise or compatibility issues. Unlike conventional single-ended inputs, the differential-balanced design does not connect one side of the audio signal to chassis ground. This eliminates any voltage sensitivity between one input terminal and ground and greatly reduces the incidence of alternator whine in a typical car audio installation. The JL Audio HD amplifier provides range switching on each of its inputs via the "Input Voltage" switch. This permits connection to a wide range of source voltages while retaining excellent sensitivity setting precision.

Note: You will need a speaker wire to RCA adaptor (136XDCLR2S, sold separately) to connect this amplifier to your headunit via speaker-level.

Protection Circuitry With Status Indicator Lights: There is a single multi-color LED on the control panel of the amplifier to indicate the amplifier's operating status.

  • Flashing Green: When the LED is flashing green, the amplifier is powering up and audio output is muted.
  • Constant Green: This LED lights green to indicate that the amplifier is turned on and operating normally.
  • Constant Red: This Red LED lights to indicate that the amplifier has exceeded its safe operating temperature, putting the amplifier into a shelf-protection mode, which reduces the power output of the amplifier. The red light will shut off and the amplifier will return to normal, full-power operating mode if the heat sink temperature drops back to a safe level.
  • Constant Yellow: This amber LED lights to indicate that the impedance of the speaker load connected to the amplifier is lower than the optimum impedance load range for the amplifier. When this light is on, a protection circuit engages and reduces the power output of the amplifier. The amber indicator will also light when a short-circuit is detected in the speaker wiring.
  • Alternating Red/Green: The LED alternated between Red and Green to indicate that the amplifier is experiencing a fault that may require service of the amplifier, its wiring, or the vehicle's operating system. Audio is muted when this fault occurs.

Note: There is only one condition that will shut down the HD750/1 completely and that is if the battery voltage of your vehicle drops below 10 volts.

Mounting Options: The HD750/1 has two mounting option to choose from during installation.

  • Standard Mounting: The standard method of mounting requires removal of the four corner caps with the 3/16-nch he-wrench included with the amplifier. Using the appropriate mounting screws (not included), you can then secure the amplifier in all four corners and replace the corner caps.
  • Lateral Mounting Feet: Lateral Mounting Feet are also included with the HD750/1 to provide an alternative mounting option. Each mounting foot should be attached to the bottom of the amplifier by screwing the provided bolts into the bottom of the amplifier and up into the corner cap with the supplied 1/8-inch hex-wrench. Then, using the appropriate mounting screws (not included), you can secure the amplifier by its four lateral mounting feet.


Control Panel Cover: The HD750/1 features a Control Panel Security Cover which protects and hides the amplifier's controls. When installed, the cover ensures that the amplifier's settings are not accidentally changed while creating a clean aesthetic look for the amplifier and your installation. The control panel security cover is pre-installed at the factory and must be temporarily removed for access the amplifier's controls. The security cover is secured by a single 2.5mm hex-head screw.

Simplified Gain Setting: The amplifier's R.I.P.S. feature also allows for easy gain setup. Because the amplifier will always deliver the same amount of power within its operational range of impedances and supply voltages, the maximum, unclipped output is very predictable. This makes setting the gain level of the amplifier via the input sensitivity control very simple. All you need is Digital AC Voltmeter (142TK12V, sold separately) and a Test CD Disc (503CD104, sold separately) with a sine-wave test-tone recorded at 0 dB reference level in the frequency range to be amplified for that set of channels (50 Hz for subwoofer channels, 1 kHz for a midrange application).

Flexible Input Section And Active Crossover Network: The JL Audio HD amplifier provides a flexible input section and a comprehensive crossover network to fine tune your system effectively and accurately. The variable filter design employed in the JL Audio HD amplifier crossover sections allow you to seamlessly switch slopes, easily change filter frequencies and address what frequencies the preamp outputs will pass. The HD750/1 offers the following independent crossover adjustments behind a removal cover plate.

  • Filter Mode: The amplifier features a Full-Range, variable Low-Pass or variable High-Pass filter mode for the amplifier's preamp input section.
  • Switchable Slope on all filters: 12dB/octave Butterworth or 24dB/octave Linkwitz-Riley alignments allowing for more precise integration of subwoofer and speaker channels.
  • Variable Frequency: Fully-variable frequency selection from 50-500 Hz for high-pass or low-pass crossover.
  • Infrasonic Filter: The Infrasonic Filter is a 24 d/b/octave high-pass filter, with a fixed cutoff frequency of 30 Hz. This filter is designed to conserve amplifier power and protect subwoofer systems, without audibly degrading the sub-bass output.

Output Polarity Control: Depending on the distance relationship of the mid-bass speakers and the subwoofers in your system, it can be desirable to reverse the polarity of the subwoofer system in order to produce a better transition between subwoofer and midbass speaker output. The amplifier's Output Polarity switch allows you to quickly perform this polarity inversion.


Power/Ground/Turn-On Plug: The amplifier features a Power/Ground/Turn-On plug which detaches from the amplifier to make connecting your power, ground, and remote turn-on lead wires more convenient. Once your connections are made the Power/Ground/Turn-On connector simply plugs into the amplifier.

  • Power and Ground: The JL Audio amplifier's set-screw Power and Ground connections found on the detachable Power/Ground/Turn-on plug are designed to accept 8 to 4 AWG power wire. A 2.5mm hex-wrench is supplied for making connections.
  • Remote Turn-On: The JL Audio HD amplifier's set-screw turn-on lead found on the Power/Ground/Turn-on plug will accept 18 to 8 AWG wire. The same 2.5mm hex-wrench is supplied for making connection.

Note: The Amplifier is not equipped with a fuse. An external 60-amp AFS, AGU, or MAXI fuse (not included) must be installed on the power wire. If a wiring kit is used which includes a fuse with a value other than 60-amps, the original should be replaced with a 60-amp fuse

Speaker Output Plugs: The amplifier features one Speaker Output plug which detaches from the amplifier for easier speaker wire connection. Once your speaker wires are connected to these plugs, they simply push into the amplifier. The Speaker Output plug features four set-screw terminals for an easy parallel subwoofer connection. The HD750/1 amplifier's four set-screw speaker terminals found on the Speaker Output plug will accept 16 to 8 AWG speaker wire. A 2.0mm hex-wrench is supplied for making connections.

Preamp Inputs: The amplifier features one set of differential-balanced RCA jack inputs. The amplifier features a dedicated Input Sensitivity gain control for these inputs. These controls are designed to match the input sensitivity of the HD750/1 to the specific signal source that is feeding it. The amplifier's input level can be set to Low (200mV-2V RMS) when connecting the amplifier to a low-level preamp signal or set to High (800mV-8V RMS) when connecting the amplifier to a high-level speaker signal.

Preamp Outputs: The HD750/1 incorporates a pass-through preamp output sections, so that additional amplifiers can easily be connected to the same signal(s) feeding the HD750/1. These preamp output signals are buffered to prevent noise and are always preamp level, regardless of the level of signals feeding the HD750/1's inputs.

Remote Level Control: The amplifier features a standard telephone connector for adding an optional wired remote level control. With the addition of the optional wired Remote Level Control (136HDRLC, sold separately), you can control the volume of the HD750/1 form the front of your vehicle. This is useful for subwoofer level control. If desired, multiple HD amplifiers can be controlled from a single HD-RLC controller using a simple phone line splitter and multiple phone cables (all sold separately).

Note: All inputs and outputs are located on the rear side of the amplifier to make installation of the amplifier simple and neat.

Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

JL Audio HD Series HD750/1 Reviews

Average Customer Review:

11 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5


Written By Rocky, Kalamazoo, MI on Friday, July 18, 2014
Crutchfield Customer Review (What's this?)
Sweet, clean power!!! Pushing a J L Audio 10" AE sealed box sub. I hope it does not blow out the glass in my hatchback. P.S. Performs much better if you use 2 guage power & ground. J L suggests min 4 guage, but the power plugs will accept up too 2 guage. The meter does not lie. This puppy loves power, don't starve it.
Wonderful, size is great, purchased stacking deck and it helped me save some room in my hatshback trunk
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
5 out of 5

VERY nice Amp

Written By Matt, Milwaukee, WI on Wednesday, January 01, 2014
Crutchfield Customer Review (What's this?)
WOW! I'm driving one 10'' JL W3v3 with this amp and it sounds amazing. Its small size made it easy to tuck under the seat and being so efficient, it barley gets warm. Using the optional wired remote is very handy, as my head unit does not have a quick access to sub level control. You can just feel the quality in this unit when you turn and switch the controls. Smooth dials and solid "clicks" from the switches.
Sounds amazing, Very fine tune able, Efficient, Optional wired remote, Adjustment controls on the front and power/speaker inputs in the back make for a clean install look. High quality!
Was this review helpful?    Yes | No
5 out of 5

JL Audio HD Series HD750/1

Written By Anonymous, fl on Monday, December 16, 2013
Crutchfield Customer Review (What's this?)
Pushes 3 10w3's with no problems. I am completely happy
Was this review helpful?    Yes | No
5 out of 5

A strong workhorse

Written By Jeff the golfer, Metro Detroit on Wednesday, May 22, 2013
I purchased this amp after my other one was on it's last leg after 12 years of service. The reason I purchased JL Audio because the 10 inch W-7 I purchased 2 years prior. The JL Audio products really impressed me. This amp was physically smaller and wattage wise was less but this thing had no problem pushing that beast of a sub. Now I downsized my sub (long story) and went with the JL Audio CP108LG W-7V3 (8in. in a ported enclosure). After talking to the technicians I properly calibrated this monster amp for the smaller subwoofer. Please follow the manual on properly setting this amp with whatever subwoofer you may own. If you don't know, ask someone with experience with the JL Audio product experience.
physically smaller (more flexible on installs) and power
Was this review helpful?    Yes | No
"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
5 out of 5

Fantastic Product - Purchased at a shop but wanted to leave an online

Written By Patrick, Dallas on Friday, December 07, 2012
I just purchased this amp to power my 12'' JL W7AE3. I was previously using a Kicker KX1200.1 @ 750RMS with 3 Ohms.

The Kicker was just not doing justice to my W7.

The Kicker could power it and was LOUD but you could tell there was not complete clarity in the sound.

The moment I turned the system on I was listening to the same song I have heard everyday for the past 6 months, and I was hearing notes that the Kicker could just not reproduce while producing the low bass notes. This thing hits WAY harder than the Kicker did.

If you have a JL sub do it the service of getting the JL amp to power it, you won't be disappointed.

If you are looking for a good amp that will provide an excellent signal go with this JL.

Great Signal Clarity
Haven't found one yet
Was this review helpful?    Yes | No
5 out of 5

Alpine type r 15 dvc 4 ohm

Written By alpinejl, marysville wa on Friday, December 02, 2011
This product is amazing. Well worth the money to me, i have it hooked up to my 15" alpine type r dvc 4 ohm sub. This combo is just beautiful, the sound quality is crystal clear. my favorite feature of this amp is how much power it draws on my system. Having a small car like i do i need all the power i can get. With this amp it draws so much less power than any other amp i have owned. I am able to run it on just battery power alone for a good 30 mins. Which is just amazing to me since i was only able to run my old amp for 5 minutes on my battery, and it was less than half of the power of this. It is so compact that you would be able to stick it under your seat no problem. I did a ton of research on this amp before i bought it and had trouble finding real reviews. So here is mine, i love my 750. I plan on buying another so i can stack it. Not yet though, one 15 is enough for my corolla:)
small, draws less power than class a/b amp, nice design, cool features, great sound quality.
i wish the detachable wire plugs were a bit easier to remove when needed. maybe just a little button to release it. Instead you have to wiggle it out pretty agressively. But that is the only con that i know of
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
5 out of 5

Went from a 1000/1 to a HD 750/1!!!

Written By Anonymous, Milwaukee on Monday, August 01, 2011
I just upgraded my old JL Audio amps that was the 1000/1 to power 1 12w7 and a 300/4 to power 2 pairs of 6 1/2 Infinity 3 way speakers, now I have a HD 750/1 powering my 12w7 and the 600/4 powering the 4 Infinities anSlash amps do!!!
3 out of 16 people found this helpful
Was this review helpful?    Yes | No
2 out of 5

JL 750/1

Written By JohnS, Columbus, GA on Monday, July 18, 2011
Crutchfield Customer Review (What's this?)
I currently have this pushing one 10" JL W7 and its astonishing. My only gripe with this amp was that it lasted 10 months before getting the alternating red/green light. Had my car checked out to be sure it wasnt a voltage or wiring issue. So if those two things check through it meant the amp died and needed to be serviced. At least JL offers an outstanding warranty. My only concern now is the replacment I get goes boom after the warranty is gone. Wish me luck!
2 out of 9 people found this helpful
Was this review helpful?    Yes | No
5 out of 5

JL Audio 750/1

Written By tha lars, Longview,WA on Friday, June 04, 2010
You will NOT be disappointed with this!!! . I currently have this amp hooked up to a set of JL Audio 12W3V3's subs in a ported box and the sound is complete BLISS!! Not to mention the absolute power this thing produces is amazing!! It seriously pounds out a full 750 RMS as JL promises unlike cheaper stuff that massively over-rates their specifications!! I drive an 03 Mitsubishi Galant with everything stock incliding the alternator(85 amp output). The only thing I upgraded was the battery to a higher reserve capacity so that this power-house of an amp could run with ease. My lights dim just a little a night,..and I do mean just a little!! If you plan to install yourself, just make sure that you run 4 gauge power and ground wire...It is very IMPORTANT!! Don't go buy some cheap amp kit to hook up to a powerful amp like this!! Besides, this amp will mute the sub outputs to protect itself if the power requirements are not met. Also, it wouldn't hurt to add an a additional 4 guage ground wire from your battery to the chassis under the hood. Then you will be all set to enjoy...TRUST ME!!
6 out of 8 people found this helpful
Was this review helpful?    Yes | No
5 out of 5

Clean power and lots of it for the size...

Written By Beau, Nashville, TN on Friday, October 02, 2009
Crutchfield Customer Review (What's this?)
This JL Audio HD amplifier has enough power to play most subwoofer combos/ impedances and sound great in the process... This amp also is a great choice when you want to keep it out of sight from people walking by your vehicle- its slim size allows you to mount it easily under most seats or in places where other amps could overheat... But do not let its size fool you, I've owned other amps that claimed to produce 750W RMS but this JL product does (at least) that very honestly... However if you are looking for raw, forceful power to drive power hungry subwoofers at 2 ohms, you should really look at the JL AUDIO 500/1v2 OR 1000/1v2 amplifiers Crutchfield sells online... They are more geared for prolonged or competiton use with SPL subs... This HD amp is a great choice however if sound quality is more up your alley, because its quality really IS hard to match. Also, you can never go wrong buying the Remote bass level knob... it's something you want to purchase with any large amp really- great convenience and control.
9 out of 13 people found this helpful
Was this review helpful?    Yes | No
5 out of 5

Amazing Amp

Written By Sean, Richmond, VA on Wednesday, March 11, 2009
I have this pushing a 10w7 in a sealed box w/ a LP x-over point of 80hz at 12db/octave w/ the infrasonic filter off (suggested infrasonic filter setting in the w7 manual for a sealed box)

i know i've yet to fully tap into the potential of the hd750/10w7 combo but so far i'm very impressed, now i need to upgrade my front stage w/ either alpine typeX pro or polk sr6500.
24 out of 27 people found this helpful
Was this review helpful?    Yes | No

1 question already asked

Hello! Will the date of manufacture of these items as well as the serial number is how much?? How do I know this article is not a problem that group? [ Meng-chang  Jun 23, 2014 ]
2 answers
  • Hello, I would like to know how you distinguish this product is not the problem?? The new product has a sticker marked above is not a July 2008 production?? Thank you to disturb you! [ Meng-chang   Jun 25, 2014 ]
  • We've confirmed that the HD750/1 amps currently in stock are not part of this recall from JL Audio. For anyone who bought an HD750/1 amp after July 2008, please check with JL Audio to see if your amp needs to be sent back for repair. [ Jeff Staff  Jun 23, 2014 ]

Add accessories for the JL Audio HD Series HD750/1

You'll need an amp wiring kit to install your new amplifier, as wiring is not included. See all categories & accessories

EFX PA4BX Wiring Kit 4-gauge amplifier wiring kit — includes 2-channel patch cable
4 people say
Your Price: $79.99
Add to Cart
Rockford Fosgate RFK4 4-gauge amplifier power wiring kit
10 people say
Your Price: $114.99
Add to Cart
Rockford Fosgate RFK4X Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire
12 people say
Your Price: $159.99
Add to Cart
T-Spec 16-gauge Speaker Wire Black/white jacket — priced per foot
13 people say
Your Price: $0.69
Add to Cart
T-Spec 12-gauge Speaker Wire Black/white jacket — priced per foot
29 people say
Your Price: $1.99
Add to Cart
Stinger PRO Series Speaker Wire Priced per foot (16 Gauge, Black)
50 people say
Your Price: $0.39
Add to Cart
JL Audio XD-CLRAIC2-SW 2-channel speaker output converter (bare speaker wires to male RCAs)
12 people say
Your Price: $9.99
Add to Cart
Kicker KISL 2-channel speaker wire adapter (bare-wire connector to RCAs)
13 people say
Your Price: $12.99
Add to Cart
T-Spec 2-Channel RCA Patch Cables Available in 7 different lengths (20-foot)
25 people say
Your Price: $20.99
Add to Cart
54 people say
Your Price: $7.99
Add to Cart
JL Audio HD-RLC Remote level controller for select JL Audio amplifiers
19 people say
Your Price: $34.99
Add to Cart
Rockford Fosgate RFFM60 MAXI Fuse Pair of 60-amp platinum-plated wafer fuses
1 person says
Your Price: $4.99
Add to Cart
EFX CFHG4 Fuse Holder In-line AGU fuse holder accepts 4- to 8-gauge wire
Your Price: $9.99
Add to Cart
Rockford Fosgate RFFAGU Fuse Holder Platinum-plated AGU fuse holder
Fits 4- or 8-gauge cable
25 people say
Your Price: $10.99
Add to Cart
T-Spec Capacitor 1.5-farad capacitor with red LCD meter
11 people say
Your Price: $79.99
Add to Cart
Metra Crimp Tool and Connectors Package contains crimp tool and over 150 pieces
15 people say
Your Price: $19.99
Add to Cart
S&G Wire Cutter/Stripper Tool Cuts and strips 12- to 22-gauge wire
15 people say
Your Price: $19.99
Add to Cart
S&G Tool Aid 87650 Door Trim and Panel Removal Tool
67 people say
Your Price: $9.99
Add to Cart
Pro.Fit Wire Worm Installation tool helps route wiring through tight spaces
31 people say
Your Price: $12.99
Add to Cart
Bojo Trim Panel Tools Set of 6 pry tools — helps remove interior and exterior trim and door panels
52 people say
Your Price: $24.99
Add to Cart
Skewdriver Pro SPK4042 Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)
8 people say
Your Price: $49.99
Add to Cart
Bojo Trim Panel Tools Set of 6 pry tools — helps remove interior and exterior trim and door panels
2 people say
Your Price: $29.99
Add to Cart
DEI Heat Shrink Tubing Black 4-foot length (Assortment)
6 people say
Your Price: $24.99
Add to Cart
InstallCard: Amp or Equalizer Prepaid professional amplifier or EQ installation
17 people say
Your Price: $79.99
Add to Cart

Why choose SquareTrade?

The #1-Rated Protection Plan

Thousands of people have reviewed SquareTrade Protection Plans — and made us #1.

5-Day Service Guarantee & Free Shipping

We'll repair or replace your item in five business days or less after we've received it, or your plan is free. And, as always, we pay for all shipping.

Protection from Normal, Everyday Use

Repairing your average mechanical or electrical failure can cost as much as buying a new device. With SquareTrade, you're covered — including parts and labor.

3 Year Protection Plan
3 Year Protection Plan
Your Price: $89.99
Add to Cart
4 Year Protection Plan
4 Year Protection Plan
Your Price: $119.99
Add to Cart

For a more in-depth review and enhanced detailed information on the JL Audio HD Series HD750/1, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_136HD7501/JL-Audio-HD-Series-HD750-1.html ).