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Focal FD 1.350

Ultra-compact mono amplifier — 350 watts RMS x 1 at 2 ohms

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  • Focal FD 1.350

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  • Focal FD 1.350

  • Focal FD 1.350

  • Focal FD 1.350

  • Focal FD 1.350

  • Focal FD 1.350

  • Focal FD 1.350

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Our take on the Focal FD 1.350

by Alexander Hrabe
Focal

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.

When size matters

You're putting a subwoofer in your vehicle, but you don't want to take up a lot of space. Focal's FD 1.350 amplifier delivers plenty of power from an astonishingly small chassis without compromising sound quality. This diminutive mono amplifier packs a respectable punch, driving a sub with up to 350 watts RMS even though it's the size of a small paperback book.

No sacrifices

The amplifier offers the controls you need to tune your bass, including a low-pass crossover, switchable bass boost, and variable phase adjustment. 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.

Cool under pressure

The FD 1.350 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 its FD Series 2-channel or 4-channel siblings to power an entire system.

Without cover
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Highlights:

  • ultra-compact mono D class amplifier with dual output
  • 210 watts RMS x 1 at 4 ohms
  • 350 watts RMS x 1 at 2 ohms
  • CEA-2006 compliant
  • stackable aluminum chassis
  • Direct FET® Technology for efficient heat dissipation
  • cable accessories included
  • high-level inputs with auto-detection (external transformer) and RCA low-level inputs
  • low-pass crossover: 40-400 Hz
  • switchable bass boost (0, 6,12 dB @ 50 Hz)
  • phase adjustment: (0° to 180° continuous)
  • fuse rating: 15A x 2
  • 10-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • dimensions: 7-7/8"W x 1-11/16"H x 4-5/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

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

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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210 x 1
Peak Power Output (Watts x Channels)
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N/A
Power at 2 Ohms (Watts x Channels)
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350 x 1
Bridged Power (Watts x Channels)
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N/A
Minimum Impedance Bridged
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N/A
Minimum Impedance Unbridged
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2
Best Frequency Response
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10-400 Hz
THD at Rated RMS Power
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1%
Signal to Noise Ratio
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N/A
Input Voltage
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14.4v
Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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40-400 Hz
Low-Pass Slope (dB/octave)
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N/A
High-Pass Crossover Frequency
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N/A
High-Pass Slope (dB/octave)
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N/A
Bass Boost
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0, 6,12 dB
Bass Boost Frequency
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50 Hz
Fan Cooled
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No
Fuse Rating
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30
Speaker Level Inputs
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Harness
Preamp Outputs
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No
Width (inches)
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7-7/8
Height (inches)
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1-11/16
Depth (inches)
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4-5/16
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Product Research
What's in the box?

Download owner's manual

  • Mono subwoofer amplifier
  • Four 15-amp mini-blade fuses (2 installed/ 2 spare)
  • 2 Terminal covers (installed)
  • External speaker level input transformer
  • 8" Speaker input harness (Molex plug on one end and tinned bare wire on the other)
  • 8" Speaker level input transformer harness (Molex plugs on both ends)
  • Four 2" Self-tapping screws
  • 2.5mm Allen wrench
  • 7 Crimp-on spade connectors (10/12 gauge)
  • 4 Red spade insulators
  • 3 Black spade insulators
  • User manual (English/ French)

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.

Features
Controls
Connections

Features

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 1.350 is rated at 210 watts RMS x 1 channel.

2Ω Stable: The amplifier can also support a 2Ω load; the 2Ω power output is 350 watts RMS x 1 channel.

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: An external speaker level input transformer is included, used when your source unit doesn't have RCA outputs. The transformer is connected to the amp with the included wiring harness. The transformer's dimensions are approximately:

  • Width: 2-3/8"
  • Height: 1-1/4"
  • Depth: 2" (3" including wiring)

Auto Turn-on: When using a speaker level input, the amp will turn on automatically when it senses the input signal.

Controls

Gain: To accommodate the varying range of signal levels from today's factory and aftermarket radios, the FD 1.350 features an adjustable gain control; 0.2-5.0 volts line level (RCA) and 0.4-10.0 volts speaker level.

Crossover: The built-in low-pass filter has a continuously variable crossover point; 40 Hz to 400 Hz. Because this is a subwoofer amp, the crossover is always engaged.

Phase: The output phase is continuously adjustable from 0° to 180°.

Bass Boost: The bass boost, centered at 50 Hz, can be set to 0 dB (flat), +3 dB, or +12 dB.

Connections

Power Connections: The power, ground, and turn-on 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 all three terminals.

Speaker Outputs: There are two pair of 0.3" wide screw terminal speaker outputs; they are internally wired in parallel, making it easy to connect two subwoofers. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Crimp-on spade connectors are included for two speakers.

Line Level Input: The line input is a pair of stereo RCA jacks.

Speaker Level Input: An external speaker level input transformer and wiring harnesses are included for the speaker level input.

Fuses: The amplifier uses two 15-amp mini blade-type fuses.

 
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For a more in-depth review and enhanced detailed information on the Focal FD 1.350, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_091FD1350/Focal-FD-1-350.html ).