Bryston 2B-LP - Manual (Page 4)

REMOTE ON/OFF CONTROL (optional)
Some 2B-LP models come equipped with a remote on/off control feature. This feature allows the amplifier to be turned on and off
by application of a control voltage of 12V (AC or DC) at 5mA. The control voltage is connected via the dual spring loaded terminal
block located beside the “Remote/Local” toggle switch. To insert wires press a small (1/8”wide maximum) blade screwdriver into
the small rectangular orange slotted levers located at the top of the terminal blocks. While pressing in against the lever, insert
the control voltage wires into the circular openings, then release the lever. The terminal blocks can accept stranded wire gauges
between 18 to 26 AWG. To bypass the remote on/off control, place the toggle switch in the “LOCAL” position. To turn the power
amplifier off, place the toggle switch in the centre position. Only when the toggle switch is in the “REMOTE” position will the 2B re-
spond to a remote control voltage. Please note that some 2B-LP models may contain a mechanical push-button power switch located
on the front panel. This mechanical power switch is in series with the remote electronic power switch, and must therefore be in
the ON (pressed in) position to enable the amplifier. If the front power switch is in the OFF (out) position, then the amplifier will be
off regardless of the position of the rear mounted “Remote ON/OFF” switch or the presence or absence of a dc control voltage. The
control voltage must be 12V at 5mA, but it can be either AC or DC due to an internal rectifier circuit. If a DC control voltage is used,
it does not matter which terminal is connected to positive and which is connected to negative.
CSA ADVISORY:
This amplifier will deliver full undistorted power at 4 ohms without current limiting and will deliver a dynamic musical signal to a 4
ohm load without overheating. However, Canadian Standards Association (CSA) procedures call for testing at 33.3% of full measured
undistorted power into 4 ohms continuously which is an extreme condition insofar as internal amplifier heat dissipation and causes
cycling on the heat-sink-mounted thermal circuit breakers. CSA testing procedures call for these thermal breakers to be artificially
bypassed whereupon an additional resetting thermal protection mechanism, internal to the power transformers, will come into play
and will cycle to protect the amplifier from damage. CSA does not consider this “normal operation”, however, and therefore consid-
ers this model “unacceptable” for 4 ohms loading.
2blp_manual_20070214
2B-LP EXTERNAL DIMENSIONS
SPECIFICATIONS
Output power: 60 watts/ch @ 8Ω
100 watts/ch @ 4Ω
200 watts bridged @ 8Ω
THD: <.01%, 20Hz to 20KHz
NOISE: 100dB below full output
Crosstalk: below noise, 20Hz to
20KHz at 50 watts
Slew rate: >60v/µsec
Damping factor: >500@20Hz, ref. 8Ω
Power BW: .5Hz to >500KHz
Input sensitivity: .775v for 60W @ 8Ω
Input impedance: 50KΩ unbalanced
10KΩ balanced
Power Consumption & Heat Load:
1. Idle Current 58W
2. Stereo 8 Ohms (50W ea.) 286W
3. Stereo 4 Ohms (100W ea.) 498W
4. Bridged 8 Ohms (200W) 504W
5. Max. Wattage 504W
6. Max. Heat Dissipation 304W / 1037
Btu/Hr