Description
FLX500.4 — Ultra-Compact 4-Channel Full-Range Amplifier
The FLX500.4 is the starting point when space is the hard limit but the bike still needs a real four-channel amplifier. At only about four inches long without brackets, it fits the kind of fairing and tight powersports locations where a larger chassis creates more installation problems than the extra wattage is worth.
SMS would use it for efficient coaxials, CXX-style speakers or a moderate four-speaker Harley system where 95W x4 at 4 ohms or 125W x4 at 2 ohms is enough to get the speakers working correctly. If the speaker package wants more headroom but you still need the same micro-footprint, FLX700.4 is the natural step up. If the build needs DSP, the 700.4PRO is the better architectural move than adding a separate processor later.
MANUFACTURER SPECIFICATIONS
• 95W RMS x4 @ 4Ω / 125W RMS x4 @ 2Ω at 14.4V
• 250W RMS x2 bridged @ 4Ω
• Frequency response: 20 Hz–20 kHz ±3 dB
• LPF / FULL / HPF crossover: 20 Hz–20 kHz
• Crossover slopes: 6 / 12 / 24 / 48 dB/octave
• Gain: 0.2V–12V
• Turn-on: REM / DC / VOX
• Operating voltage: 9–16V
• Music / max current draw: 50A / 80A
• Recommended fuse: 50A
• Chassis: 4.0 x 4.9 x 2.0 in
• With brackets: 5.2 x 4.9 x 2.0 in
• Exact model: FLX500.4
The FLX500.4 is the starting point when space is the hard limit but the bike still needs a real four-channel amplifier. At only about four inches long without brackets, it fits the kind of fairing and tight powersports locations where a larger chassis creates more installation problems than the extra wattage is worth.
SMS would use it for efficient coaxials, CXX-style speakers or a moderate four-speaker Harley system where 95W x4 at 4 ohms or 125W x4 at 2 ohms is enough to get the speakers working correctly. If the speaker package wants more headroom but you still need the same micro-footprint, FLX700.4 is the natural step up. If the build needs DSP, the 700.4PRO is the better architectural move than adding a separate processor later.
MANUFACTURER SPECIFICATIONS
• 95W RMS x4 @ 4Ω / 125W RMS x4 @ 2Ω at 14.4V
• 250W RMS x2 bridged @ 4Ω
• Frequency response: 20 Hz–20 kHz ±3 dB
• LPF / FULL / HPF crossover: 20 Hz–20 kHz
• Crossover slopes: 6 / 12 / 24 / 48 dB/octave
• Gain: 0.2V–12V
• Turn-on: REM / DC / VOX
• Operating voltage: 9–16V
• Music / max current draw: 50A / 80A
• Recommended fuse: 50A
• Chassis: 4.0 x 4.9 x 2.0 in
• With brackets: 5.2 x 4.9 x 2.0 in
• Exact model: FLX500.4
AMPLIFIER SYSTEM FIT
Where this fits in the build
An amplifier should be chosen around the channels, load, speaker or subwoofer plan, available electrical support and how hard the system needs to play.
Plan aroundMatch usable channels and power to the actual speakers and load.
Match itPlan signal processing and gain structure before chasing wattage.
Finish itHigher output may require charging, battery and wiring upgrades.