A head-to-head subwoofer comparison to help you pick the right one for your room.
Updated August 20, 2026
Verdict
Both use the same 12-inch driver and the same 325 watt Sledge amplifier, so this is a cabinet decision rather than a performance one. The sealed SB-1000 Pro is the smaller box with a tighter, faster character and a gentler roll-off. The ported PB-1000 Pro digs noticeably deeper in the bottom octave and plays louder there, at roughly three times the cabinet volume. Buy the SB-1000 Pro for music, small rooms and tight placement; buy the PB-1000 Pro for movies and rooms above about 2,500 cubic feet.
| SVS SB-1000 Pro | SVS PB-1000 Pro | |
|---|---|---|
| Alignment | Sealed | Ported |
| Driver | 12 in, same as PB | 12 in, same as SB |
| Amplifier | 325 W RMS Sledge | 325 W RMS Sledge |
| Rated low frequency | About 20 Hz | About 17 Hz |
| Cabinet volume | Roughly one third of the PB | Roughly three times the SB |
| Character | Tighter, faster transients | Deeper, more output down low |
| Best for | Music, small to mid rooms | Movies, mid to large rooms |
| App and DSP | Yes, 50-50 app | Yes, 50-50 app |
Your room is on the smaller side, you listen to as much music as film, or the subwoofer has to live somewhere a large ported box simply will not go. Sealed alignments also tend to be more forgiving of awkward placement.
Check SVS SB-1000 Pro on Amazon
You watch films in a room above roughly 2,500 cubic feet and you want the bottom octave to be felt rather than implied. The extra extension is the entire reason this box is bigger.
Check SVS PB-1000 Pro on Amazon
No. It goes deeper and plays louder below about 25 Hz, which matters for film effects. In a small room a sealed subwoofer is often the better answer because room gain already reinforces the bottom end, and the smaller cabinet is far easier to place well. Placement usually matters more than alignment.
Yes. Both use SVS 12-inch drivers and the 325 watt RMS Sledge amplifier with the same app-based DSP, parametric EQ and presets. The meaningful difference is the cabinet: sealed versus ported.
Two subwoofers almost always beat one of the same total cost, because a second source smooths the room modes that cause boomy and dead spots. If the budget stretches to a pair of SB-1000 Pros rather than a single larger sub, that is usually the better outcome for seat-to-seat consistency.
Comparison based on published manufacturer specifications and the general consensus of owner reports. We have not tested these units side by side. Confirm current prices and specifications before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.