System Nine vs Von Schweikert ULTRA.7
The ULTRA.7's impedance is 4Ω against the System Nine's 3Ω, its sensitivity 94 dB against 83.5 dB, its low-frequency extension 18 Hz against 20 Hz, and its woofer 9" against 13".
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersSubwoofers
About the System Nine
The System Nine is a complete high-end audio system featuring the Model Seven Mk II loudspeakers with patented Perfect Piston carbon fiber-balsa core driver cones and ultra-quiet carbon-bodied cabinet-within-a-cabinet enclosure, paired with a Bedrock granite base for enhanced vibration damping and mass. It includes M7-HPA liquid-cooled high-pass amplifiers that relieve the main amplifiers of deep bass duties for improved midrange and treble performance, and a stereo pair of SUB NINE subwoofers each with a 13-inch downward-firing slot-loaded woofer driven by a 400-watt amplifier. All components use advanced analog signal processing with custom-designed amplifiers for each frequency range, 11-band room EQ on subs for optimal bass, and achieve seamless crossover integration at 100Hz for maximum musical engagement and room-specific performance.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 83.5 dB SPL @ 1W/1m
- Impedance
- 3Ω
- Frequency Response
- 20 Hz - 100 Hz
- Power Handling
- 400W
Power Specifications
Amplification power output and characteristics
- Power @ 4Ω
- 600W @ 4Ω
- Input Impedance
- 200000Ω
Speaker Design
Driver configuration and enclosure design
- Driver Type
- dynamic
- Driver Size
- 13"
- Driver Count
- 1
- Crossover Frequency
- 100 Hz
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- Barrier strips, 5-Way binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 432 × 508 × 533 mm (W × H × D)
- Weight
- 90.72 kg (200 lbs)
Key Specifications
Sensitivity: 83.5 dB
Impedance: 3Ω
Frequency: 20-100 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions