Lightning strikes again

Lightning Audio makes a great line of amplifiers that'll appeal to car audio fans everywhere. Their LA-51000 5-channel amplifier will hit your whole system with over 60 watts RMS going to each of your four speakers, plus up to 250 watts RMS going to a sub or two. This handsome amp packs its wallop using Class AB amp technology, for clean, distortion-free reproduction of your music. Want power for two high-performance component sets and a sub? You can hook up the LA-51000 in 3-channel mode and blast a couple of speakers with 200 watts RMS each and a subwoofer with 250 watts.

Precise control

The amp features separate high-pass filters for the front and rear channels, so even if you're running smaller speakers up front and some big 6"x9"s in back, you can make them all sound their best. You can use the variable low-pass and subsonic filters on the subwoofer channel to clarify the bass to perfection, then crank up the bass boost when you want to add some punch to the proceedings.

Lightning Audio LA-5100 control panel

                                                                       LA-51000 control panel

Product Highlights:

  • 5-channel car amplifier
  • 62.5 watts RMS x 4 at 4 ohms + 200 watts RMS x 1 at 2 ohms
  • 100 watts RMS x 4 at 2 ohms + 250 watts RMS x 1 at 1 ohm
  • 200 watts RMS x 2 bridged at 4 ohms + 250 watts RMS x 1 at 1 ohms
  • variable high-pass filter on front and rear channels (10-150 Hz, 12 dB/octave)
  • variable low-pass filter on subwoofer channel (30-150 Hz, 12 dB/octave)
  • variable subsonic filter on sub channel (15-55 Hz, 12 dB/octave)
  • variable bass boost on sub channel (0-12 dB at 45 Hz)
  • Class AB amp technology
  • preamp inputs
  • wired remote sub level control included
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • fuse rating: 80A x 1
  • 22"W x 2-5/16"H x 9-1/2"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

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.

Hands-on research

What's in the box?

Download owner's manual

  • 5-Channel amplifier
  • Two 80-amp MAXI fuses (1 installed/1 extra)
  • Wired Remote Bass Control
  • 16' Remote cable (RJ-25 Connector on both ends)
  • 4mm Allen wrench
  • 3mm Allen wrench
  • 3mm Allen wrench
  • Four 5/8" Self-tapping screws
  • Two 3/8" Self-tapping screws
  • 6 Flat washers
  • 6 Split lock washers
  • Instructions (English/ German/ French/ Spanish/ Italian)

Product Research

Features

Gain: The front, rear, and subwoofer amps have independent rotary gain controls adjustable from 200mV to 5V.

Bass Boost: The bass boost is adjustable using a rotary dial; 0 to +12 dB, centered at 45 Hz.

Crossover: The front, rear, and subwoofer amps are equipped with independent crossovers:

  • Front: switchable between full range and high-pass; crossover point variable from 10 to 150 Hz, 12 dB/octave slope
  • Rear: switchable between full range and high-pass; crossover point variable from 10 to 150 Hz, 12 dB/octave slope
  • Subwoofer: low-pass; crossover point variable from 30 to 150 Hz, 12 dB/octave slope; this being the subwoofer part of the amp, the crossover is always engaged

Subsonic Filter: The subsonic filter is variable from 15 to 55 Hz. Ultra-low frequencies that cannot be reproduced by a subwoofer do not become sound but become unnecessary oscillations, which affect sound by causing distortion. These frequencies also waste amplifier power and can cause damage to speakers. The Infrasonic filter removes frequencies below the setting, to improve the performance of the speakers by eliminating harmful distortion.

Input Mode: If the source unit has a dedicated line output for the subwoofer, set the Mode switch to CH5. If only using the amp's front and rear line inputs, set the Mode switch to CH4.

Wired Remote: An RJ-25 jack is provided for connecting the included wired remote, allowing remote control of the subwoofer amplifier from the front of the vehicle. The supplied 16' cable, with RJ-25 phone plugs at each end, connects the wired remote level control to the amplifier.

Note: The Remote Bass Control measures approximately 2-1/8" wide (2-7/8" including the mounting flange) x 1-1/4" high x 1-7/8" deep (2-1/2" deep including the knob and wiring).

Connections:

  • Battery: set screw terminal; accepts up to 4 gauge wire
  • Remote: set screw terminal; accepts up to 8 gauge wire
  • GND (ground): set screw terminal; accepts up to 4 gauge wire
  • Speaker Output: five pair of set screw terminals; accept up to 10 gauge wire
  • Line Inputs: 3 pair of stereo RCA jacks
  • Wired Remote: RJ-25 jack for included wired remote

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.

Lightning Audio LA-51000 Reviews

Average Customer Review:

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Lightning Audio LA-51000

Written By Anonymous, Alexandria VA on Thursday, July 10, 2014

Crutchfield Customer Review (What's this?)

No fuss. no muss amp. This one replaced a different brand/model that crapped out on me, and so far it works very well. My friend installed it without much trouble and I'm pleased with the sound I get from it.

The Perfect Fit!!

Written By Will, Lemoore, CA on Thursday, July 03, 2014

Crutchfield Customer Review (What's this?)

I needed a quality budget 5 channel amp with these exact power specs to replace the aged sound system in my 2001 Maxima. This amp's specs were perfect for my need, and it was $100 off as well. What was strange was the lack of reviews of this device anywhere on the web, but it doesn't matter. What makes all the difference is pure, clean sound!!

Pros: Custom adjustability at the installation level Incredibly clean sound Value and dependability

Cons: None whatsoever

Lightning Audio LA-51000

Written By DickW, LaGrange,IN on Monday, June 16, 2014

Crutchfield Customer Review (What's this?)

Great performance and looks

Pros: Easy to hookup

Cons: The instructions had no info to help with the setting. There was no sub woofer out until I called to get typical setting because all setting were at min positions.

Lightning Audio LA-51000

Written By Kevin, Fairfield, CT. on Sunday, March 16, 2014

Crutchfield Customer Review (What's this?)

This amp performs extremely well with my Ford F150. 5-1/4" polk audio components in the front doors, and stock speakers in rear. A 12" diamond audio custom fit sub under rear seat. Huge amounts of power and clean sound. With several adjustments, must be fine tuned appropriately. The remote bass control is a touch bulky and the blue led light on it is very bright, so plan accordingly when mounting it. For the price, this will not disappoint.

Cons: very large, make sure it will fit.....

Lightning Audio LA-51000

Written By percy, kansas city on Saturday, August 17, 2013

Crutchfield Customer Review (What's this?)

I bought this amp because i had a smaller lighting amp which performed well. I had it installed for 3 weeks and I am very plrsease. I have 2 ,6-9 and 2, 51/2 door speakers 2, 12inch mtx terminator. I was extremely impress with the power and sound. I have afriend that has a similar setup but with 2- 12inch punch and 1000 watt amp, he spent more money with a third of the sound. he was very dissapointed with his sound after listening to mine.

Pros: This amp has enough power, for your system, and for a better price

Get everything you’ll need to enjoy your new Lightning Audio LA-51000

You'll need an amp wiring kit to install your new amplifier, as wiring is not included.
Bring the music from your amp to your speakers.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Get a spare fuse now so you won't be listening to silence later.
For multi-amp systems, you'll need a separate fuse holder.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
The right tools will make the installation easier.
Have your new amplifier put in by a qualified professional in your area.
Kicker PK4

Kicker PK4

4-gauge amplifier power wiring kit

Item #: 206PK4

(1)

$129.99
Add to Cart
Rockford Fosgate RFK4X

Rockford Fosgate RFK4X

Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire

Item #: 575RFK4X

(12)

$159.99
Add to Cart
EFX PA4BX Wiring Kit

EFX PA4BX Wiring Kit

4-gauge amplifier wiring kit — includes 2-channel patch cable

Item #: 142PA4BX

(6)

$79.99
Add to Cart
T-Spec 4PK Installation Kit

T-Spec 4PK Installation Kit

4-gauge amplifier wiring kit — includes speaker wire

Item #: 1204PK

(3)

$89.99
Add to Cart
Rockford Fosgate RFK4

Rockford Fosgate RFK4

4-gauge amplifier power wiring kit

Item #: 575RFK4

(10)

$114.99
Add to Cart
T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1

(30)

T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1

(13)

Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B

(53)

T-Spec 4-Channel RCA Patch Cable

T-Spec 4-Channel RCA Patch Cable

17-foot length

Item #: 120RCA174

(9)

$29.99
Add to Cart
T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (17-foot)

Item #: 120RCA172

(27)

$19.99
Add to Cart
EFX 17-foot RCA Patch Cable

EFX 17-foot RCA Patch Cable

Item #: 142A17C

(55)

$7.99
After $2.00 Savings Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Reference Series Multi-Core RCA patch cables — available in 5 different lengths (6-foot)

Item #: 142RR6

$14.95
Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Elite Series Braided Multi-Core RCA patch cables — available in 5 different lengths (17-foot)

Item #: 142RE17

$74.95
Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Core Series Twisted RCA patch cables — available in 5 different lengths (12-foot)

Item #: 142RCT12B

$9.95
Add to Cart
T-SPEC V8 Mini-ANL Fuses

T-SPEC V8 Mini-ANL Fuses

Pair of nickel-plated mini-ANL fuses (80-amp)

Item #: 120MANL80

(10)

Rockford Fosgate RFF80 MAXI Fuse

Rockford Fosgate RFF80 MAXI Fuse

Pair of 80-amp platinum-plated wafer fuses

Item #: 575RFFM80

(1)

Rockford Fosgate RFFAGU Fuse Holder

Rockford Fosgate RFFAGU Fuse Holder

Platinum-plated AGU fuse holder
Fits 4- or 8-gauge cable

Item #: 575RFFAGU

(25)

$10.99
Add to Cart
EFX CFHG4 Fuse Holder

EFX CFHG4 Fuse Holder

In-line AGU fuse holder accepts 4- to 8-gauge wire

Item #: 142CFHG4

T-Spec Capacitor

T-Spec Capacitor

1.5-farad capacitor with red LCD meter

Item #: 12015DDC

(11)

$79.99
Add to Cart
T-Spec Capacitor

T-Spec Capacitor

3.0-Farad capacitor with red LCD meter

Item #: 1203DDC

(8)

$99.99
Add to Cart
S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

(17)

$19.99
Add to Cart
Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533

(34)

$12.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL

(54)

$24.99
Add to Cart
Pro.Fit Trim Panel Tool

Pro.Fit Trim Panel Tool

Remove your vehicle's trim panels without damage

Item #: 042DM4022

(88)

Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

Item #: 180SQR200A

(1)

$49.99
Add to Cart
Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

Item #: 120CRIMPKT

(15)

$19.99
Add to Cart
S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

(71)

Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

Item #: 180SPK4042

(8)

$49.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL

(3)

$29.99
Add to Cart
Install Bay 3320

Install Bay 3320

Auto-ranging digital multimeter

Item #: 1203320

$39.99
Add to Cart
Install Bay IB35400

Install Bay IB35400

Premium door panel and trim tool

Item #: 12035400

$15.99
Add to Cart
DEI Heat Shrink Tubing

DEI Heat Shrink Tubing

Black 4-foot length (Assortment)

Item #: 696010839

(8)

$24.99
Add to Cart
InstallCard: Amp or Equalizer

InstallCard: Amp or Equalizer

Prepaid professional amplifier or EQ installation

Item #: 597421003

(18)

$79.99
Add to Cart
Autosound 2000 Disc One

Autosound 2000 Disc One

Low Frequency Test CD (Disc One)

Item #: 503CD101

(1)

$19.99
Add to Cart
Autosound 2000 Disc Five

Autosound 2000 Disc Five

System Demonstration — Test CD

Item #: 503CD105

Questions & Answers Ask the community. Share your knowledge.

2 questions already asked

If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the install. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Krissy  Feb 26, 2014 ]  Staff
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Jan 27, 2014 ]  Staff