KEF R800ds Subwoofer 3 WAY 25-100W

Dimensions | Metric :10-1/4” W x 10-1/4” D x 10-1/4” H | 26.0 x 26.0 x 26.0 cm
Driver Complement :One high-definition 7-1/2" long throw woofer, pressure coupled to two 7-1/2” low bass radiators
Frequency Response :16 Hz – 200 Hz
Internal Amplifier Power :650 watts
Auto On / Off :Signal Sensing (US) | Signal Sensing and Switched (International)
Power Requirements :110 volts Alternating Current (US) | 220 volts Alternating Current (International)
High Level Inputs :5 way binding posts
High Level Outputs :5 way binding posts
Subwoofer Inputs :One LFE input (for SW preout only)
Low Level Inputs :Two low level inputs: left and right low level in
Low Level High Pass Crossover :12 dB/octave continuously variable from 40 Hz to 150 Hz: Available only with low level inputs and outputs
Low Pass Crossover% :24 dB/octave continuously variable from 40 Hz – 150 Hz:
Available Finishes :Piano-Gloss Black
Accessories :Rubber feet; Isolation spikes
Fuse :8 amp 250 volt Slo Blo (US) | 4 amp 250 volt Slo Blo (International)
Weight | Metric :25 lbs | 11.3 kg
Warranty :5 Years; 3 Years for Amplifiers

Dimensions | Metric :16-3/4” W x 16-3/4” D x 16-15/16” H | 42.5 x 42.5 x 43.0 cm
Driver Complement :One high-definition 14" long throw woofer, pressure coupled to two 14” low bass radiators
Frequency Response :11 Hz – 200 Hz
Internal Amplifier Power :1800 watts
Auto On / Off :Signal Sensing (US) | Signal Sensing and Switched (International)
Power Requirements :110 volts Alternating Current (US) | 220 volts Alternating Current (International)
High Level Inputs :Two pairs of 5 way binding posts
High Level Outputs :Two pairs of 5 way binding posts
Subwoofer Inputs :One LFE input (for SW preout only)
Low Level Inputs :Two low level inputs: left and right low level in
Low Level Outputs :Two low level outputs: left and right low level out
High Level High Pass Crossover :Non Variable 6 dB/octave @ 80 Hz: Available only with high level inputs and outputs only
Low Level High Pass Crossover :12 dB/octave continuously variable from 40 Hz to 150 Hz: Available only with low level inputs and outputs
Low Pass Crossover% :24 dB/octave continuously variable from 40 Hz – 150 Hz: Available only with high level inputs and outputs or low level inputs and outputs
Available Finishes :Piano-Gloss Black
Accessories :Rubber feet; Isolation spikes
Fuse :8 amp 250 volt Slo Blo (US) | 4 amp 250 volt Slo Blo (International)
Weight | Metric :97 lbs | 44.0 kg
Warranty :5 Years; 3 Years for Amplifiers

Type     Advanced YST II and QD-Bass Subwoofer
Driver     25cm(10'') cone
Dynamic Power     250 W
Frequency Response     20-160 Hz
Advanced YST     Advanced YST II
QD-Bass Technology     Front-firing
High-Efficiency Power Amplifier     Yes
Linear Port     Yes
BASS (Bass Action Selector System)     Yes
Standby Power Consumption     0.3 W
Dimensions (W x H x D)     380 x 368 x 420 mm
Weight     18.5 kg

Description    Active balanced-drive closed-box subwoofer system
Drive units    2x Ø300mm (12 in) Rohacell® cone long-throw
Frequency range    -6dB at 15Hz and 250Hz
Frequency response    ±3dB 17Hz - 145Hz
Power output:    1000W
Rated power consumption:    135W
Standby power Consumption:    100dB
Functions:    5 Presets
Input sensitivity
Gain
Low-pass filter
Graphic equalisation
Room compensation
Auto on/standby
Trigger on/standby
Trigger preset switching
RS-232 automation control
Inputs:    Stereo Line In (2x RCA Phono)
Mono (LFE) Line In (RCA Phono)
Mono (LFE) Line In (XLR balanced)
Dimensions    Height:490mm (19.3 in) not including feet
Width: 460mm (18.1 in) including grilles
Depth: 410mm (16.2 in) including controls
Net weight    44kg (97 lb)
Cabinet finish    Gloss Black
Cherrywood
Rosenut
Grille    Black cloth

ALSO AVAILABLE IN  Cherrywood, rosenut

Amplifier Output: 1000 watts (RMS) 2000 watts (Peak)
Frequency Response: 16Hz to 40/160Hz variable
Crossover (Low Pass): 40Hz - 160Hz Variable slope characteristic from
12 - 36dB/Octave
Sub-Sonic Filter (High Pass): 16Hz - 31Hz
EQ: 4 x Presets 1 x User Setting
Equalisation: Graphic 9 band Equaliser ±6dB in 0.5dB steps
Volume Level: -80 - 0dB (1dB increments from 0 to -30dB & 2dB
increments from -31 to -80dB)
Auto Sensing Input Requirements: Line Level>5mV (RMS) Variable delay time
5, 10, 15, 20, 25 & 30 minutes
Variable Phase Control: 0. 45. 90, 135, 180, 225, 270 & 315º
Internal Memory: 3 Independent memory locations
Cabinet Specification:
Sealed Cabinet with 25mm thick M.D.F
construction with critical internal bracing
Amplifier Classification:
Class-D amplifier with DSP control
Driver Complement:
1 x 15" C-CAM long throw sub-woofer driver featuring triple suspension and a 4" long throw voice coil

External Dimensions -
Excluding Plinth: Width: 485mm (19 inches)
Height: 455mm (18 inches)
Depth: 475mm (18 3/4 inches)
Weight: 50 Kg (110lbs)
Mains input Voltage: 100 - 240 Vac 50/60Hz (Factory Set)
Trigger Input:
3.5mm Jack input, +12Vdc = On State

User's Manual

AVAILABLE IN THESE COLOR FINISHES