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Description

Sundown Audio SFB-200.4 

SFB-200.4 is a 4-channel full-range Class-D amplifier from Sundown Audio’s “SFB (Full Bridge)” series. It’s designed to deliver robust power to multiple speakers (mid/high or full-range speaker setup), with support for low-impedance loads  giving flexibility for wiring and powerful output even on demanding speaker arrays. It includes variable crossovers (high-pass and low-pass), bass boost, and full protection circuitry  good for users who want loud, stable car audio without needing a separate sub amplifier.


Specifications

Specifications
Product Sku
SFB-200.4
Amplifier Type
4-channel full-range amplifier
1 Ohm RMS Power
200 x 4 @ 1 ohm RMS
2 Ohm RMS Power
125 x 4 @ 2 ohms RMS
4 Ohm RMS Power
75 x 4 @ 4 ohms RMS
Operation Voltage
10.5v-15.5v
Recommended Fuse
80A
Signal / Noise Ratio
100dB
Variable 12dB High Pass Filters
15Hz – 6kHz
Variable 12dB Low Pass Filters
50Hz – 6kHz
Dimensions
Length
7.25″
Width
2.50″
Height
8.50″

 


Features

  • 200 x 4 @ 1 ohm RMS
  • 125 x 4 @ 2 ohms RMS
  • 75 x 4 @ 4 ohms RMS
  • 4-channel full-range amplifier
  • Variable 12dB low pass filter: 50Hz – 6kHz
  • Variable 12dB high pass filter: 15Hz – 6kHz
  • Variable 12dB Bass Boost @ 50Hz
  • Power, protection & clipping indicators included
  • Thermal, voltage, speaker short, and dc-offset protection circuitry
  • Optional wired remote control with clipping indicator

About The Product

Introducing the Sundown Full Bridge line of amplifiers! The “Brazilian Style” SFB packs a powerful punch in a compact size, stable down to 1 ohm per channel.  Use the SFB to wire several speakers together on every channel – an ideal amp for a PA mid/high speaker array, a large marine system, or your favorite set of separates. If you are looking for raw power on a budget –  look no further!

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Questions and Answers

Q1: What power output does SFB-200.4 deliver?

A1:

  • 200 W × 4 at 1 Ω (RMS)

  • 125 W × 4 at 2 Ω (RMS)

  • 75 W × 4 at 4 Ω (RMS)

Q2: What kind of amplifier is it (class / design)?
A2: It is a 4-channel Class-D full-range amplifier from the SFB series, capable of handling 1 Ω per channel (full-bridge / low-impedance stable) — suitable for powerful speaker configurations and flexible wiring.
Q3: What audio tuning controls does it include (filters, bass boost)?

A3: It includes:

  • A variable 12 dB/Octave low-pass filter (50 Hz – 6 kHz)

  • A variable 12 dB/Octave high-pass filter (15 Hz – 6 kHz)

  • A variable bass boost at 50 Hz (boost up to 12 dB)

Q4: What protections and safety features does it have?
A4: The amplifier includes multi-way protection: thermal protection, voltage protection, speaker-short protection, and DC-offset protection. It also has power, protection and clipping LEDs. An optional wired remote control with clipping indicator is also supported.
Q5: What are its general specs (frequency response, input sensitivity, voltage range, fuse)?

A5:

  • Frequency response: 10 Hz – 20 kHz (-3 dB)

  • Signal-to-noise ratio: 100 dB

  • Input sensitivity: up to 5 V max

  • Operating voltage: 10.5 V – 15.5 V DC

  • Recommended fuse: 80 A

  • Dimensions: approx. 7.25″ × 8.50″ × 2.50″


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