Focal FD 4.350
Crutchfield Customer Review (What's this?)
Just as advertised
Pros: Nice small unit with good sound
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Item # 091FD4350 | MFR # FD 4.350
$399.99 Earn up to 400 Rewards points
If you want an audio upgrade but you're short on room, Focal's FD 4.350 may be the amp for you. This 4-channel amplifier packs a respectable punch, driving four speakers with up to 100 watts RMS each even though it's only the size of a small paperback book. Explore your options with 2- and 3-channel mode to power subs and speakers in different combos.
The amplifier's active high- and low-pass crossovers let you get hands-on with sound optimization as well. And if you're keeping your factory radio, the amp comes with external audio transformers that automatically detect and convert the high-level signals from your speaker wires.
The FD 4.350 uses Direct FET Technology to dissipate heat efficiently from its aluminum chassis, ensuring long-term reliability. And speaking of saving space, you can stack this amp with others in the FD Series to power an entire system.
Average Customer Review(s):
Just as advertised
Pros: Nice small unit with good sound
These amps are small, powerful and amazing. One thing the other review did not mention is that you do not turn the gain all the way up. You use this to tune your amp so there is no clipping in your signal. Proper tuning of the gain for your system insures long life of your speakers. no issues with these at all.
Pros: Small, simple.
Cons: Terminals could be a little bigger.
Poor quality amp! All the harnesses was cheap made...include the fuse holder. When you crank it up the bass was popping! & that only less than 1/2 way! First I though was my speaker? Than I exchange with another amp (Rockford T400x4ad) speaker did not pop! Even I crank it up full! I love all my Focal speaker! But this is junk!
Pros: Small size, fit all most any where!
Cons: All harnesses are cheap made!
|RMS Power Output (Watts x Channels)||
58 x 4
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||100 x 4|
|Bridged Power (Watts x Channels)||200 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||10-50k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||84 dB|
|Low-Pass Crossover Frequency||40-400 Hz|
|Low-Pass Slope (dB/octave)||N/A|
|High-Pass Crossover Frequency||40-400 Hz|
|High-Pass Slope (dB/octave)||N/A|
|Bass Boost Frequency||N/A|
|Speaker Level Inputs||Harness|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
CEA-2006 Compliant: CEA-2006 is a system of testing and measurement for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4Ω load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). CEA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples). Using CEA-2006 criteria, the Focal FD 4.350 is rated at 58 watts RMS x 4 channels.
2Ω Stable: The amplifier can also support a 2Ω load; the 2Ω power output is 100 watts RMS x 4 channels.
4-Channel Amp: The FD 4.350 is a 4-channel amplifier, basically two 2-channel amps in one chassis. The inputs, outputs, and controls are labeled CH 1-2 or CH 3-4.
Bridgeable: Both sides of the amp are independently bridgeable; it can be used in 4-channel, 3-channel, or 2-channel modes. The bridged power output is 200 watts RMS x 2 channels into 4Ω.
Stackable: All the FD series amps (FD 1.350, FD 2.350, and FD 4.350) have the same footprint, and can be stacked on top of one another.
Speaker Level Input: Two external speaker level input transformers are included, used when your source unit doesn't have RCA outputs. The transformers are connected to the amp with the included wiring harness. The transformers' dimensions are approximately:
Auto Turn-on: When using a speaker level input, the amp will turn on automatically when it senses the input signal.
Input Select: The input select switch has three options:
Independent Controls: The Channels 1-2 and 3-4 have separate controls for gain, crossover mode, and crossover point frequency:
Power Connections: The power and ground connections are 0.3" wide screw terminals. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Crimp-on spade connectors are included for both terminals.
Speaker Outputs: There are 0.22" wide screw terminals for four speakers and the remote turn-on lead. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Crimp-on spade connectors are included for all the terminals.
Line Level Input: The line input is two pair of stereo RCA jacks.
Speaker Level Input: Two external speaker level input transformers and wiring harnesses are included for the speaker level input. (Each has inputs for two speakers.)
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 verify what’s in the box, 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.
Focal makes quality products and my space is very limited. I also have the two channel version and that has been a workhorse [ Dan Feb 20, 2017 ]
Stock Nissan Xterra Rockford Fosgate amplifier required high pass inputs to interface with my new Kenwood DDX9903S receiver which introduced speaker hiss into all front and rear speakers (driving me crazy). Purchasing this Focal Amp which takes low pass (read: RCA) inputs should fix the hissing. [ Brian Sep 09, 2016 ]
compact size [ Nickey D. Jun 01, 2016 ]