804 Diamond
The 804 Diamond boasts a truly commanding acoustic performance, thanks to its three-way design incorporating two Rohacell® bass units, an FST™ midrange and a diamond dome tweeter.
- Email to a friend
- 804 Diamond Manual
- 804 Diamond Info sheet
- 804 Diamond Brochure
- Register your 804 Diamond
Cherrywood
Rosenut
Piano Black Gloss
As wonderfully versatile as its smaller brother the 805 Diamond, the elegant, floorstanding 804 Diamond has an even more commanding acoustic presence, thanks to a true three-way design incorporating two Rohacell® bass units, an FST™ midrange and a diamond dome tweeter delivering pin-sharp clarity all the way up the frequency range. A brilliant all-round performer for any occasion.
The hypothetical perfect tweeter is one that balances infinite stiffness with near-zero density. Only one material on earth comes close to matching those properties: diamond. Thanks to modern scientific techniques, we can grow diamond, like a crystal, to form the optimum tweeter dome shape. The result is truly exceptional sound at high frequencies. And it comes as standard with every speaker in the range, including the 804 Diamond.
For a long time, we thought our Kevlar® midrange cones couldn’t get any better – but then we came up with the fixed suspension transducer (FST for short). FST enhances the properties of Kevlar by acting like a circular shock absorber around the cone, absorbing the sound-smudging bending waves that travel outwards to the perimeter. A midrange driver never sounded cleaner, or more responsive.
| Woven Kevlar | |
| Crossover Tuning | |
| Nautilus Tapering Tube | |
| Flowport | |
| Mushrooms | |
| FST | |
| Tweeter on Top | |
| Matrix | |
| Rohacell | |
| Diamond Tweeters | |
| De-coupling | |
| Quad Magnet Tweeter Motor | |
| Dual Magnet Tweeter Motor | |
| Description | 3-way vented-box system |
| Drive units | 1x ø25mm (1 in) diamond dome high-frequency 1x ø150mm (6 in) woven Kevlar® cone FST™ midrange 2x ø165mm (6.5 in) Rohacell® cone bass |
| Frequency range | -6dB at 30Hz and 33kHz |
| Frequency response | 38Hz - 28kHz ±3dB on reference axis |
| Dispersion | Within 2dB of reference response |
| Horizontal: | over 60º arc |
| Vertical: | over 10º arc |
| Sensitivity | 90dB spl (2.83V, 1m) |
| Harmonic distortion | 2nd and 3rd harmonics (90dB, 1m) <1% 90Hz - 22kHz <0.5% 120Hz - 20kHz |
| Nominal impedance | 8Ω (minimum 3.0Ω) |
| Crossover frequencies | 350Hz, 4kHz |
| Recommended amplifier power | 50W - 200W into 8Ω on unclipped programme |
| Max. recommended cable impedance | 0.1Ω |
| Height: | 1020mm (40.2 in) (not including feet) |
| Width: | 238mm (9.4 in) |
| Depth: | 351mm (13.8 in) |
| Net weight | 27kg (59 lb) |
| Cabinet: | Cherrywood Rosenut Piano Black Gloss |
| Grille: | Black cloth |
Related products
802 Diamond
The 802 Diamond is the smaller of the two 'headed' models in the 800 Series Diamond. It offers immense levels of scale and clarity, and is destined to be a favourite among audiophiles for many years to come.
803 Diamond
The 803 Diamond might look almost as imposing as the 802 Diamond, but thanks to its smaller footprint and more traditional cabinet design, it will fit more comfortably into a home environment.
805 Diamond
The 805 Diamond is an industry world-first – the only speaker of its size and type to incorporate true studio-grade technology in the form of a diamond dome tweeter.
HTM4 Diamond
The HTM4 Diamond is the perfect centre channel speaker for smaller home theatre set ups, thanks to a neat space-saving design and combined bass/midrange driver.
- Home
- Speakers
- Home Audio
- 800 Series Diamond
- 804 Diamond