Product Overview & Specifications
Developed by Michael Børresen and Flemming Erik Rasmussen, the Børresen C1 is a reference 2-way stand-mount loudspeaker designed for high-end stereo systems in small to medium-sized listening spaces. The cabinet is constructed from dense hardwood laminates reinforced with 1mm carbon fiber side panels for maximum acoustic rigidity and resonance control. It comes complete with custom-designed matching stands made from non-magnetic composite materials, equipped with integrated Ansuz Darkz S2t resonance control decouplers to isolate the speaker system from floor vibrations.
Its driver complement combines an ultralight RP94 planar ribbon tweeter (0.01g moving mass, 94 dB efficiency) with a custom 5-inch Børresen DCC5 Neo bass/midrange driver. The DCC5 Neo driver utilizes a tri-layer composite membrane—an aramid honeycomb core sandwiched between carbon fiber skins—to deliver low distortion and rapid transient dynamics. Managing frequency distribution is a phase-coherent serial crossover network engineered to preserve phase alignment and ensure seamless driver integration.
KEY FEATURES
- Børresen DCC5 Neo Driver: Custom 5-inch bass/midrange driver featuring a powerful neodymium magnet structure for precise dynamics and low distortion.
- 3-Layer Composite Membrane: Diaphragm constructed with an aramid honeycomb core between carbon fiber skins for high stiffness and minimal energy storage.
- RP94 Planar Ribbon Tweeter: Features an ultra-light 0.01-gram moving mass and 94 dB efficiency for extended, transformer-free high-frequency response up to 50 kHz.
- Resonance-Controlled Enclosure: Dense hardwood laminate cabinet clad in 1mm carbon fiber side panels to suppress structural vibrations.
- Phase-Coherent Serial Crossover: Serial crossover topology ensures drivers remain in phase alignment for cohesive imaging and realistic spatial presentation.
- Custom Matching Stands & Darkz S2t Decoupling: Includes dedicated non-magnetic composite stands equipped with integrated Ansuz Darkz S2t resonance control devices for mechanical decoupling.
SPECIFICATIONS
| Speaker Type | 2-Way Stand-Mount / Bookshelf Loudspeaker with Dedicated Stands |
| High Frequency Driver | 1x Børresen RP94 Planar Ribbon Tweeter (0.01g Moving Mass) |
| Bass / Midrange Driver | 1x 5" Børresen DCC5 Neo Driver |
| Frequency Response | 45 Hz – 50,000 Hz |
| Sensitivity | 87 dB / 1W |
| Nominal Impedance | > 6 Ω |
| Recommended Amplifier Power | > 50 W |
| Enclosure Material | Dense Hardwood Laminate with 1mm Carbon Fiber Side Panels |
| Stand & Isolation System | Non-Magnetic Composite Stands with Integrated Ansuz Darkz S2t Decouplers |
| Finish Options | Black Piano Lacquer / White Piano Lacquer |
| Dimensions (Speaker Unit) | 469 x 204 x 430 mm (H x W x D) |
| Dimensions (With Stand) | 705 x 297 x 433 mm (H x W x D) |
| Weight (Speaker Unit) | 18 kg per speaker |
| Weight (With Stand) | 24.5 kg per speaker |
Customer Reviews
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Borresen C1 Loudspeakers
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