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SPL FX4-840

840W Max, FX Series 4-Channel Amplifier

SPL
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• 840W Max, FX Series 4-Channel Amplifier • 4 ohms: 80 watts x 4 chan • 2 ohms: 95 watts x 4 chan • Bridged, @ 4 ohms: 190 watts x 2 chan • S/N Ratio: 98dB • THD: 0.02%

Learn more about the fx4840

We apologize

This item has been discontinued

Product Highlights


• 840W Max, FX Series 4-Channel Amplifier • 4 ohms: 80 watts x 4 chan • 2 ohms: 95 watts x 4 chan • Bridged, @ 4 ohms: 190 watts x 2 chan • S/N Ratio: 98dB • THD: 0.02%

Description


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Authorized dealer

General Features

  • SPL FX4-840 840W Max, FX Series 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohms: 80 watts x 4 chan.
    • 2 ohms: 95 watts x 4 chan.
    • Bridged, @ 4 ohms: 190 watts x 2 chan.
  • Full Mosfet Power Supply
  • PWM Circuitry
  • Full Selectable Crossover Hi/Full/Low
  • Three Way Protection Circuit
  • 2 Ohm Stable Stereo
  • Tri-Mode Capable
  • Variable Low Pass 40 Hz-250 Hz
  • Variable Hi Pass 40 Hz-250 Hz
  • Variable 18 dB Bass Boost @ 40 Hz
  • Frequency Response: 10 Hz to 30 KHz
  • S/N Ratio: 98dB
  • THD: 0.02%
  • System Distress Indicator
  • 4 Guage Power / Ground Connection
  • Platinum Plated RCA Connectors
  • Line Output
  • Dimensions: 12.8" L x 11.1" W x 2.3" H
  • 1-year Manufacturer's warranty

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
80 watts x 4 channel
RMS Power @ 2 ohms
95 watts x 4 channel
RMS Power @ 1 ohm
Not stable
Bridged RMS Power
190 watts x 2 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total Peak Power Output
840 watts
Total RMS Power Output
380 watts
Maximum Input Gauge Size
Any Gauge with use of Spade Terminal AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
.02%
Speaker Level Inputs
Yes
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
40 - 250 Hz
Low-Pass Crossover Frequency
40 - 250 Hz
Signal-to-Noise Ratio
98 dB
Bass Boost
0 - 18 dB
Remote bass/level controller
No
Fuse Rating
20A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

SPL

Model Number:

FX4-840

Weight:

8.40lbs

Internal SKU:

fx4840

Internal Product ID:

9172

Product and How-to Videos


Customer Ratings & Reviews



5 star
91%
4 star
9%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
5
Features
4.8
Design
4.8
Usability
4.8

Customer Reviews

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perfect and value priced

I have this amp running 4 lanzar 3 way speakers in a 08 f-150 this thing makes them scream(in a good way of course). It is running off a kenwood kdc 642u. This amp has all the adjustments you need to get crisp clean sound a great buy in my book

By groberts5 on December 16, 2009

37

found this helpful.

great amp

this amp really make my tweeter sound so clear and loud too

By seann on April 8, 2009

33

found this helpful.

Great amp.

Great amp, gives my 6.5 Pioneer speakers plenty of power and never had a problem with it.

By SpeedyEddy on February 24, 2011

29

found this helpful.

Great amp

Great amp I was using A 400w and upgraded to this amp. And wow it sounds great clear and loud and even in full mode you can give the rear or front or both A little bass boost great for adding A little extra bass to back 6x9s and keeping your fronts in tune. The added settings on this amp are A big plus.

By joel on February 23, 2015

27

found this helpful.

Great Amp!

This amp is highly recommended. The specs are excellent and you can push this amp for all it's worth. It is a very clean amp. You get a lot of amp for a small price.

By RodC on October 13, 2009

27

found this helpful.

loud n clear

this thing is powering 2 powerbass 6x9s n 2 6.5 components,4 a cheap amp it sounds great. its perfectly priced here since i payed more.

By james on October 18, 2007

27

found this helpful.

Great Amp For the Price

This amp provides lots of power, but there are a few cons to the cheap price, the crossover knobs are a bit cheap, mine were bent, and its does heat up a lot affecting sound quality. other than that this amp is great. add a few cpu fans and you solve the heating problem

By Ryan on September 1, 2010

26

found this helpful.

Good amp for the money

This amp will push the mids and highs fine, t.h.d. is fair. Dont overdrive your gain it will heat up. As long as you follow the rms and load impeadance it will do as advertised just as many other amps will. It took the place of my JL 300/4 series amp. Dont undergauge the wiring. Short as possible ground and jumper ground back to deck. This will keep motor noise to a minimum. I miunted a microfan on the ventilation to extract excessive heat as my set up is a TMA 1000 mono amp pushing two infinity perfect 10's JL 500/1 driving to soundstream 8 mid woofer/subs and this SPL FX4-840 is driving my rockford 2x 6 1/2 2 ways and my 2x M&M Polk audio 6501 series seperates. It performs well with all this crammed into a 88 chevy c1500 sportside single cab! I get 132 decibels.

By Relik on September 9, 2015

15

found this helpful.

great

I have this pushing 6 infinity speakers it gets so loud in the truck it hurts your ears also no distortion. Great product.

By brandon on September 28, 2011

20

found this helpful.

work good

working good, I recommend 100%,easy to install,and there people don't play with your money

By jova on July 31, 2015

13

found this helpful.

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