ULTRA.9 vs ULTRA.11
The ULTRA.11's sensitivity is 94 dB against the ULTRA.9's 92 dB. Both share impedance (4Ω), low-frequency extension (16 Hz), and high-frequency extension (40 kHz).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersPowered Loudspeakers
About the ULTRA.9
The Von Schweikert Audio ULTRA.9 is a flagship six-way, eight-driver floorstanding loudspeaker designed for full-range, high-dynamic-performance reproduction. It uses a sealed enclosure, a physically time-aligned front and rear driver layout, Von Schweikert’s Global Axis Integration Network (G.A.I.N.), Acoustic Inverse Replication (A.I.R.) technology, passive room-correction controls, Rear-Ambient Retrieval, and MasterBuilt ULTRA internal wiring. Each channel combines twin ceramic mid-bass drivers, a ceramic midrange, a beryllium-dome tweeter, front- and rear-firing ribbon super-tweeters, a rear ambient tweeter, and a powered 15-inch sealed subwoofer. Published specifications vary between model revisions and sources: the manufacturer currently lists 16 Hz–40 kHz, 500 lb per speaker, and a 1,000-watt RMS internal subwoofer amplifier, while earlier reviews list up to 60 kHz, approximately 535 lb per speaker, and slightly different driver descriptions.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 92 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 16 Hz - 40 kHz
- Power Handling
- 1.0kW
- Min. Amplifier Power
- 60W
- Max. Amplifier Power
- 1.2kW
Power Specifications
Amplification power output and characteristics
- Power @ 4Ω
- 1.0kW @ 4Ω
- Minimum Impedance
- 4Ω
Speaker Design
Driver configuration and enclosure design
- Configuration
- 6-way
- Driver Type
- dynamic
- Driver Size
- 15"
- Driver Count
- 8
- Enclosure Type
- sealed
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 533 × 1181 × 826 mm (W × H × D)
- Weight
- 227 kg (500 lbs)
- Available Colors
- high gloss finishes available
Never published
- Connectivity — the maker never published this. Checked 30 sources on 9 Sept 2026
Key Specifications
Sensitivity: 92 dB
Impedance: 4Ω
Frequency: 16-40000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions