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Monoblock Amplifiers Under 1,500W

Monoblock amplifiers under 1,500W cover the most common bass builds: one or two subwoofers in a daily driver, a compact under-seat install, or a powersports rig. Choose from Sundown Audio SAEv4, SFB, SIA, SALT-1, SDX and SAM mono amps and the Crossfire C3-500D, C5-800D and CFM 1000, all through an authorized dealer.

  • 11 products
  • Crossfire Car Audio · Sundown Audio
  • Free shipping over $250
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11 products

Who This Power Range Suits

This band covers the systems most people actually drive every day. A single 10 or 12 inch sub in a sealed or ported box, or a pair of modest subs, usually lands well inside it. Amps at the lower end of the range are often manageable on a healthy stock charging system with correctly sized wire, while the upper end may benefit from a battery or alternator upgrade if the headlights dim on bass notes.

Picking a Mono Amp Under 1,500W

Match your sub or pair

Add up the RMS rating of your subwoofers and look for an amp that delivers about that much at your final impedance. Output changes with load, so an amp's 1 ohm rating can be far higher than its 4 ohm rating. Read the chart at the load your wiring will actually present.

Daily, compact or powersports

  • Daily drivers: the Sundown SAEv4-600.1D and SAEv4-1000.1D, the SFB-600D and the Crossfire C3-500D and C5-800D fit trunk or under-seat installs.
  • More headroom: the Sundown SIA-1250D, SALT-1 and the Crossfire CFM 1000 suit subs that want extra power within this band.
  • Marine and powersports: the weatherproof SDX-400.1 and the SAM-600D and SAM-1000D handle boats, UTVs and motorcycles.

Wiring It Up

Even a modest bass amp needs a proper power and ground run, so pick an amp wiring kit matched to its current draw and the distance to the battery. Mount the fuse close to the battery and keep the ground short and on bare metal. If your subs want more, step up to 1,500W to 2,400W monoblock amps or compare every monoblock amplifier in one place. Back in amplifiers you will find speaker amps to complete the system. For most single-sub builds, monoblock amplifiers under 1,500W deliver the right balance of output, size and electrical demand.