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REL Acoustics Britannia Range User Manual

12

MODE SWITCH. 

 Used to set phase* and to bypass crossover for Low Level input**.

Position 1 /  Line: 0 degrees phase, crossover engaged low level input
Position 2 /  LFE: 0 degrees phase, crossover bypassed for low level input
Position 3 /  Line: 180 degrees phase, crossover engaged for low level input
Position 4 /  LFE: 180 degrees phase, crossover bypassed for low level input

*Phase selection affects both Hi and Lo level inputs
**Crossover is always engaged for Hi level input regardless of mode switch
position.

LO LEVEL 

input volume control.   Adjust for output level when using LO LEVEL phono

input or balanced line level input XLR socket.

HI  LEVEL

  input  volume  control.   Adjust  for  output  level  when  using  HIGH  LEVEL

UNBALANCED  INPUT  Neutrik  socket  or  HIGH  LEVEL  BALANCED  INPUT  Neutrik
socket.

FINE  ROLL  OFF 

control.   Fine  adjustment  of  roll  off  point,  used  in  conjunction  with

Coarse Roll Off control (below).  See chart on amplifier panel or in this manual, page 8,
for crossover frequencies determined by setting combinations of both controls.

COARSE ROLL OFF 

control.   Coarse adjustment of roll off point, used in conjunction

with Fine Roll Off control (above).  See chart on amplifier or in this manual, page 8, for
crossover frequencies determined by setting combinations of both controls.

0dB LO INPUT 

phono socket.   Used to connect the Sub Bass System at low level to

the sub/LFE output of the amplifier/processor or left and right pre-amp outputs.
If  Lo  Level  inputs  are  used  to  connect  pre-amp  right  and  left  outputs  then  a  12dB
attenuator is available from REL to balance the two inputs.

+12dB LO INPUT 

phono  socket

 

. As

 

6 but a higher 

 

sensitivety.   If  LO  LEVEL  inputs

are  used  connected  to  pre-amp  right  and  left  outputs  then  a  12  dB  attenuator  is
available from REL to balance the two inputs.

HIGH LEVEL BALANCED INPUT.  

Neutrik Speakon socket. 

 

Used to connect the Sub

Bass System at high level to the speaker output of one channel of a differential output
or bridged to mono amplifier.

HIGH LEVEL UNBALANCED INPUT.  

Neutrik Speakon socket.   Used to connect the

Sub Bass System at high level to the main speaker output of  amplifiers.

LOW LEVEL BALANCED INPUT. 

XLR socket.  Used to connect the Sub Bass System

at low level to pre-amplifier balanced line outputs.  

(Not on B3)

[Mention of Power Switch and underslung LED power indicator needs mention here,
and potential additions to panel graphics on preceding pages.]

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Summary of Contents for Britannia B1

Page 1: ...USER MANUAL Britannia Series B1 B2 B3 REL Acoustics Limited North Road Bridgend Industrial Estate Bridgend CF31 3TP Great Britain Telephone 44 0 1 656 768 777 Fax 44 0 1 656 766 093 Web www rel net...

Page 2: ...REL Acoustics Britannia Range User Manual 2...

Page 3: ...T 13 TO CONNECT TO MONO BLOCK POWER AMPLIFIERS USING THE HIGH LEVEL NEUTRIK UNBALANCED INPUT 14 TO CONNECT TO DIFFERENTIAL BALANCED OUTPUT POWER AMPLIFIERS USING THE BALANCED HIGH LEVEL INPUT 16 TO CO...

Page 4: ...that it cannot be walked on 9 For added protection during a lightening storm or when not in use for long periods of time unplug it from the wall socket 10 Never spill any kind of liquid on the unit 1...

Page 5: ...ective in material or workmanship All expenses except collateral expenses related to replacing or repairing a defective part under this warranty will be assumed by Sumiko except for the cost of transp...

Page 6: ...product is CE marked and has been tested to ensure it satisfies all relevant standards It satisfies all relevant standards for Conducted Emissions Radiated Emissions Susceptibility and Immunity It al...

Page 7: ...the filter controls 3 Balanced and unbalanced inputs via high quality sockets 4 Mode switch to control phase and low level filter bypass 5 All components of matching superior quality to achieve both l...

Page 8: ...olled within the software by the processor s decoder circuitry The high level inputs are always routed through the ABC The phase can be reversed by 180 degrees by means of this same switch to preserve...

Page 9: ...SYSTEM PROTECTED BY MADE IN GREAT BRITAIN www rel net R HIGH LEVEL BALANCED INPUT Britannia B1 TM MAX MIN MAX MIN 1 2 3 4 A B C D 1 2 3 5 6 MODE LO LEVEL HI LEVEL COARSE FINE LO INPUT 0dB 12dB SOURCE...

Page 10: ...1 2 3 4 5 6 MODE LO LEVEL HI LEVEL COARSE FINE LO INPUT 0dB 12dB SOURCE 1 2 3 4 LINE LFE LINE LFE PHASE 0 0 180 deg 180 deg MODE SELECTOR ROLLOFF HIGH LEVEL UNBALANCED INPUT LINE LEVEL BALANCED INPUT...

Page 11: ...LEVEL BALANCED INPUT Britannia B3 TM MAX MIN MAX MIN 1 2 3 4 A B C D 1 2 3 4 5 6 MODE LO LEVEL HI LEVEL COARSE FINE LO INPUT 0dB 12dB SOURCE 1 2 3 4 LINE LFE LINE LFE PHASE 0 0 180 deg 180 deg MODE SE...

Page 12: ...oint used in conjunction with Fine Roll Off control above See chart on amplifier or in this manual page 8 for crossover frequencies determined by setting combinations of both controls 0dB LO INPUT pho...

Page 13: ...fer receives exactly the same signal as the main speakers which means that the character of the bass from the main system is carried forward into the sub bass This is a very important point and togeth...

Page 14: ...plug place thumb on chrome lever move lever backwards rotate plug anti clockwise counter clockwise in the US quarter turn and withdraw Supplied Neutrik Speakon High level Interconnect RED HIGH LEVEL...

Page 15: ...REL Acoustics Britannia Range User Manual 15...

Page 16: ...h channel A differential amplifier does not have to be a mono amplifier or one that has balanced inputs There are a number of stereo integrated and basic amplifiers that are differential The output to...

Page 17: ...nto the 0dB input on the sub woofer If when using the 0dB input the output of the sub woofer is too low then use the 12dB input The output level is adjusted using the control marked LO LEVEL If the lo...

Page 18: ...tion to the other then this method will cause a mono signal to be sent to the main amplifier s or active speakers If in doubt then contact your dealer distributor or the manufacturer of the pre amplif...

Page 19: ...LR balanced input not fitted on B3 is a single channel input designed for professional use when connected to a mixing desk or a pre amp control unit with balanced line outputs Two sub bass systems are...

Page 20: ...s pressurisation below 40Hz is best derived from corner placement where the most linear and efficient low bass can be produced Basic set up should take no more than ten to fifteen minutes to accomplis...

Page 21: ...r fullest is the correct position and as often as not may be 180 degree phase That is this position is working in harmony with your main speakers reinforcing bass and not cancelling it 2 Placement The...

Page 22: ...o receive the bass signal via the high level cable In this configuration the REL provides support for both the left and right speakers for two channel listening and support for the LFE when movies are...

Page 23: ...on to the room and is fully pressurising it the air around the sub will seem to be energised Stop right there This is the correct position for the sub Orientation Once the position from the corner ha...

Page 24: ...ve unit Apart from being sonically offensive this can cause drive unit damage Set Safe detects the point of incipient clipping and reduces the signal level to ensure actual clipping does not occur Eve...

Page 25: ...ity to dissipate more heat and this translates into greater bass depth and volume To help control this power and to further minimise port noise both the B2 and the B1 models incorporate Balanced ARM l...

Page 26: ...set period of no signal condition up to 10 15 minutes and which need to power up on receipt of a sudden transient thus failing to catch the start of that transient There is also the possibility of the...

Page 27: ...ong Throw 250mm Long Throw Heavy Duty Cast Chassis 300mm Long Throw Heavy Duty Cast Chassis LOWER FREQUENCY RESPONSE IN ROOM AT 6dB POWER OUTPUT WATTS 200 RMS 300 RMS 500 RMS PHASE 0 and 180 Degrees 0...

Page 28: ...REL Acoustics Britannia Range User Manual 28...

Page 29: ...REL Acoustics Britannia Range User Manual 29...

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