Full-Bandwidth Reference Performance for Larger Spaces | Available at Trimira Audio
The Gryphon EOS 5 Floorstanding Loudspeaker System expands Gryphon's EOS architecture into a substantial three-way reference loudspeaker designed for larger listening environments.
Developed by Gryphon Chief Loudspeaker Designer Benno Baun Meldgaard, the EOS 5 combines a Beryllium dome tweeter, a dedicated TPCD™ carbon-fibre midrange, and dual TPCD™ bass drivers in a sculpted, line-dampened enclosure.
Its Progressive Curved Slope (PCS) crossover and rear-firing port architecture are designed to provide coherent driver integration, extended low-frequency response, and practical room-placement flexibility.
At Trimira Audio, we recommend the EOS 5 for listeners seeking full-range performance and substantial dynamic scale in a more conventional single-cabinet format.
Key Features & Technological Innovations
Sculpted Stealth Enclosure
The EOS 5 uses a faceted cabinet designed to minimise baffle diffraction and manage internal acoustic energy.
The enclosure provides a rigid foundation for the four-driver system while maintaining a distinctive architectural appearance.
TPCD™ Carbon-Fibre Driver Array
The midrange and bass sections use Thin-Ply Carbon Diaphragm (TPCD™) technology.
The carbon-fibre construction provides high stiffness and controlled diaphragm behaviour, supporting clean transient reproduction at elevated listening levels.
The driver complement consists of:
- 1 × 6.5-inch TPCD™ midrange
- 2 × 9.5-inch TPCD™ woofers
29 mm Beryllium Tweeter
A 29 mm Beryllium dome tweeter handles the high-frequency range.
The tweeter incorporates a neodymium motor structure and custom rear damping chamber designed to control unwanted rear-wave energy and support extended bandwidth.
Line-Dampened Rear Port
The EOS 5 employs Gryphon's Line-Dampened rear-porting architecture.
The port is designed to manage airflow and low-frequency resonance while reducing turbulence and unwanted port noise.
Progressive Curved Slope Crossover
The PCS crossover topology provides progressively changing filter slopes through the transition regions.
The architecture is intended to provide smooth integration between the tweeter, midrange, and bass drivers while increasing out-of-band attenuation.
Adjustable System Tuning
Rear-panel controls provide additional flexibility for adapting the loudspeaker to its installation environment.
These adjustments can be used to fine-tune high-frequency balance and compensate for room-boundary effects.
Technical Specifications
| Specification |
Gryphon EOS 5 |
| System Format |
3-Way Linear-Phase Floorstander |
| High-Frequency Driver |
1 × 29 mm Beryllium Dome / Neodymium Magnet |
| Midrange Driver |
1 × 6.5-inch / 165 mm TPCD™ Carbon-Fibre Cone |
| Low-Frequency Drivers |
2 × 9.5-inch / 240 mm TPCD™ Carbon-Fibre Woofers |
| Enclosure |
Line-Dampened Rear-Ported Design |
| Frequency Response (±2 dB) |
20 Hz–40 kHz |
| Sensitivity |
90 dB @ 2.83 V / 1 m |
| Nominal / Minimum Impedance |
4 Ω / 2.9 Ω |
| Crossover Frequencies |
500 Hz / 2.5 kHz |
| Crossover |
PCS Progressive Curved Slope Architecture |
| Dimensions (W × H × D) |
480 × 1280 × 620 mm |
| Net Weight |
80.0 kg per loudspeaker |
Full-Range System Architecture
The EOS 5 uses a conventional three-way division of the audible spectrum:
29 mm Beryllium Tweeter
6.5-inch TPCD™ Midrange
Dual 9.5-inch TPCD™ Woofers
The dedicated midrange driver separates vocal and instrumental information from the high-excursion bass section, while the dual 9.5-inch woofers provide the displacement required for extended low-frequency reproduction.
The specified response extends down to 20 Hz.
Amplifier Matching
With 90 dB sensitivity and a 4-ohm nominal impedance, the EOS 5 is compatible with a wide range of high-quality power amplification.
Its specified 2.9-ohm minimum impedance should nevertheless be considered when selecting an amplifier, particularly in larger rooms or at high listening levels.
Trimira Audio can assist with:
- Power-amplifier selection
- Current capability
- Impedance matching
- Preamplifier pairing
- Listening-level requirements
- Room-size assessment
- Complete system gain structure
Room & Placement Optimisation
The EOS 5 is designed for larger listening environments, but the rear-firing port makes positioning relative to the rear wall important.
Trimira Audio can assist with:
- Rear-wall spacing
- Toe-in
- Listening distance
- High-frequency adjustment
- Boundary compensation
- Bass integration
- Acoustic treatment
Careful positioning can help balance the EOS 5's substantial bass capability with the acoustic behaviour of the room.
Reference Two-Channel Integration
A typical EOS 5 reference system can be configured as:
Digital / Analogue Sources → Reference Preamplifier → Power Amplifier → Gryphon EOS 5
The loudspeaker's full-range architecture allows it to operate without a subwoofer in many applications, while additional sub-bass can be incorporated for larger cinema or specialist installations where required.
Installation Considerations
At 80 kg per loudspeaker and approximately 1.28 metres high, the EOS 5 requires a stable supporting environment and careful positioning.
Trimira Audio can assist with:
- Delivery planning
- Speaker placement
- Equipment matching
- Cable routing
- Rear-wall positioning
- System calibration
- Room acoustic optimisation
Consult with the High-End Audio Specialists at Trimira Audio
The Gryphon EOS 5 combines a 29 mm Beryllium tweeter, 6.5-inch TPCD™ carbon-fibre midrange, dual 9.5-inch TPCD™ woofers, PCS Progressive Curved Slope crossover, line-dampened rear porting, and 20 Hz–40 kHz specified response in a substantial three-way floorstanding platform.
Trimira Audio can assist with complete EOS 5 system design, including amplifier matching, room planning, speaker positioning, boundary adjustment, and final acoustic optimisation.
Contact the Trimira Audio high-fidelity specialists in Brisbane to discuss EOS 5 system matching or arrange a private listening demonstration.
