Monoprice Alpha 8in Carbon Fiber 2-way vs Polk RC80i
The Monoprice Alpha 8in Carbon Fiber 2-way costs less ($200 vs $249). The Polk RC80i plays lower (35 Hz vs 45 Hz).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| Alpha 8in Carbon Fiber 2-way | RC80i | |
|---|---|---|
| Receivers and amps that drive it | 27 of 29 | 27 of 29 |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| Alpha 8in Carbon Fiber 2-way | RC80i | |
|---|---|---|
| Impedance | 8 Ω | 8 Ω |
| Sensitivity | 90 dB (2.83 V, 1 m) | 90 dB (1 W, 1 m) |
| Low end | 45 Hz | 35 Hz |
| Drivers | 1 × 25 mm, 1 × 203 mm | 1 × 25 mm, 1 × 203 mm |
| Size | 12×12×4 in | 11×11×4 in |
| Weight | 3 kg (6.6 lb) | — |
| MSRP | $200 a pair (MSRP, September 2026) | $249 a pair (MSRP, September 2026) |
| Recommended amplifier power | — | 20–100 W |
Every spec and pairing: Monoprice Alpha 8in Carbon Fiber 2-way, Polk RC80i.
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References
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