Strapped vs Gain Matched Calculator
Compare strapping (bridging) two amplifiers versus gain matching them. Understand the power output and impedance implications of each configuration.
Amplifier Specifications
Strapping requires identical amplifiers
Both Amplifiers
Load (Subwoofer) Configuration
The combined impedance of your subwoofer(s) wired together
⚡Strapped (Bridged)
RECOMMENDEDHow it works: Both amps combine to act as one. The load impedance is split between them (each sees 0.50Ω). One amp handles positive signal, the other handles negative.
🎚️Gain Matched
How it works: Both amps operate independently, each seeing the full 1Ω load. Gains are set to match output levels. Each amp powers its own set of voice coils or subs.
Power Comparison
Strapped
8000W
+4000W
(+100.0%)
Gain Matched
4000W
Picking the Right Approach
⚡ Strapped (Bridged)
- ✓Squeezes peak output from a matching pair
- ✓One combined output—cleaner wire runs
- ✓Load splits evenly between both units
- !Only works with two of the exact same amp
- !Each amp sees half the load impedance
🎚️ Gain Matched
- ✓Mix and match amps of different ratings
- ✓Wire your subs however works best
- ✓Full impedance seen by each amp
- ✓Lose one amp, the other keeps playing
- !Gains must be set precisely to match output
💡 Real Talk
SPL competitors typically strap because raw power wins burps. Daily drivers often prefer gain matching for flexibility and redundancy if something fails. Either way, confirm your amps can handle the resulting load before hooking anything up.