Bryston 14B3 Owner'S Manual Download Page 6

6

Balanced vs. Single Ended Input

The balanced input requires a balanced pre-amp 

source. Balanced systems provide noise rejection 

from external electrical interference, so cable 

length can be very long—50 meters or longer. The 

single ended or unbalanced input is provided for 

pre-amps without balanced output. Single-ended 

cables should be kept to 20 feet (6 meters) or less. 

In general never use longer cables than necessary, 

never coil excess cable length, and keep signal wires 

away from  AC power or speaker cables.

Power Conditioners

Bryston urges caution in choosing a power 

conditioner for your audio/video system. Large 

power amplifiers can draw very substantial current 

from the wall plug, and many so-called power 

conditioners can in fact hinder the supply of current 

by inserting resistances in series with the line cord. 

However, there are now power conditioners that 

can reduce or eliminate RF and ‘hash’ from the AC 

supply and may actually improve current delivery 

to your system.  This type of power conditioner 

(exemplified by Bryston BIT products) uses the 

energy storage in a large toroidal transformer to 

provide high instantaneous power and reduce 

the substantial AC output resistance of the wall 

socket and house wiring. This resistance can be in 

the range of 0.5 to 1 Ohm and is typically reduced 

to only a few milliohms by the power conditioner. 

That in turn considerably reduces voltage drop in 

the power line on high current surges and quite 

substantially increases the stability of the power line 

improving audio (and video) focus, precision and 

clarity.

External Control Voltage

To power-up the amplifier using an external control 

voltage, supply a 5V to 12V (AC or DC) control 

voltage to the ‘IN’ terminals of connector (

fig. 1

). Use 

paired wire of 22 to 18 gauge between the source 

device and the Bryston Cubed series amplifier.  The 

appropriate mating connector is supplied with each 

amplifier.  

Set the External Turn-On switch to “External” See 

“9. Remote Power Up:” on page 9. Place the 

front panel switch in the ON position. The amplifier 

will now power-up only when the control voltage is 

present (on).  Immediately following power-up, the 

control voltage will appear at the ’OUT’ terminals 

of connector for the control of other equipment. 

The removal of the control voltage (0v) causes the 

amplifier to turn ‘off’, and the control voltage at the 

‘OUT’ terminals is interrupted.

 In the “Local” setting of the External Turn-On switch 

the amplifier will ignore the control voltage and 

power up only by using the front panel push-button 

power switch. If a control voltage is present at the 

‘IN’ terminals, it will still be available at the ‘OUT’ 

terminals after the power-up sequence.

Note:

The ‘OUT’ terminals are connected to the ‘IN’ 

terminals once the amplifier has powered-up. 

The control current is determined by the source 

equipment. The carrying current of the ‘OUT’ relay 

is 2 amps. 

The amplifier’s control circuitry itself draws less 

than 2 mA from the control current when operating.

REMOTE POWER TURN-ON

PLUG-IN CONNECTOR

 

Insert  stripped  ends  of  insulated  wires  revealing 

approx. 1/4" of bare, stranded copper wire between 

24 and 12 AWG (.5mm to 2mm dia.)  into open elevator 

style wire clamps & tighten with a slot screw driver. 

Do not over tighten or wires may eventually come 

lose. Maximum tightening torque is 4.5 lb-in (0.5Nm)

Figure 1

Summary of Contents for 14B3

Page 1: ...14B3 Amplifier Owner s Manual ...

Page 2: ...E BRYSTON LIMITED WARRANTY Bryston analog audio products are warranted to be free from manufacturing defects for twenty 20 years from the original date of manufacture The warranty includes parts and labour Bryston digital products and cables are warranted for five years from the original date of manufacture The warranty includes parts and labour Bryston products having motorized moving parts exclu...

Page 3: ...on and Usage 4 Welcome 4 Description 4 Features 4 Shipping Box and Packing Material 4 Ventilation 4 Connecting to A C Power 4 Connecting to Loudspeakers 5 Balanced vs Single Ended Input 6 Power Conditioners 6 Front Panel 7 Rear Panel 8 14B3 Specifications 10 Dimensions 11 ...

Page 4: ...e the proper packing material Ship the amplifier only in the original packing material as the unit is not insurable by carriers otherwise Replacement packing materials consisting of a shipping carton with plastic foam inserts is available from Bryston for a small fee Installation and Usage Ventilation Bryston has deliberately chosen to omit fans from our amplifiers in an effort to minimize the noi...

Page 5: ...become damaged Note that copper wire is malleable and may require further tightening after the initial installation To prevent the risk of equipment damage or personal harm use only Class 2 rated loudspeaker wire properly terminated and connected securely to the binding posts Connecting Audio Inputs The Bryston Cubed amplifier can receive analog audio from any preamp or surround processor with vol...

Page 6: ...ision and clarity External Control Voltage To power up the amplifier using an external control voltage supply a 5V to 12V AC or DC control voltage to the IN terminals of connector fig 1 Use paired wire of 22 to 18 gauge between the source device and the Bryston Cubed series amplifier The appropriate mating connector is supplied with each amplifier Set the External Turn On switch to External See 9 ...

Page 7: ...urs when the channel output level no longer can follow the level increase at the input over driven input condition When a channel is driven into clipping the channel LED will change from green to red then back to green when the level is reduced Momentary clipping can be tolerated however it indicates that maximum undistorted power has been surpassed and potential speaker damage may result if overl...

Page 8: ...Y TERMINALS TOGETHER OR TO GROUND RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER CONNECTIONS USE CLASS 2 WIRING AVERTISSEMENT NE PAS BRANCHER LES BORNES ENSEMBLE OU À LA TERRE RISQUE DE ÉNERGIE DANGEREUSE FAIRE CONNECTIONS ENCEINTE ADÉQUAT UTILISATION CÂBLAGE DE CLASSE 2 WARNING DO NOT CONNECT ANY TERMINALS TOGETHER OR TO GROUND RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER CONNECTIONS USE CLASS 2 WI...

Page 9: ...the Cubed Series amplifier to operate 8 A C Power Input An IEC 320 C14 power inlet provides for connection of an IEC 320 C13 equipped power cord Before connecting the power cord to the amplifier check that the voltage rating on the data plate or ratings label conforms with your locality With the circuit breaker ON insert the power cord into the Cubed series amplifier then plug the other end to an ...

Page 10: ...ingle Ended Balanced Balanced 7 5kΩ 5kΩ 5kΩ IMD 60Hz 7kHz 4 1 0 005 THD N 20Hz 20kHz 600W 8Ω 0 005 Noise input shorted 22Hz 22kHz SE High 29dB Low 23dB Bal High 29dB Low 23dB 115dB 119dB 116dB 120dB Slew Rate 60V µS Bandwidth 1Hz to 100kHz 3dB Damping 20Hz 8Ω 300 Weight Pounds Kilograms 91 41 3 Power Consumption Watts Standby Idle 600W 8Ω 75W 8Ω 0 5 170 2200 875 Heat Load BTU Hour Idle 600W 8Ω 75W...

Page 11: ...in 18 4 in 16 8 in 7 8 in 7 in 4U 17 in 19 in 19 in Mounting Depth 16 1 in Total Depth 18 1 in 18 4 in 16 8 in Dimensions Minimum recommended clearance for heat dissipation 17 C Series 19 C Series includes front handles 19 PRO Series includes front handles ...

Page 12: ...Bryston Limited 677 Neal Drive Peterborough Ontario K9J 6X7 Canada Phone 705 742 5325 www bryston com 300045 2016 01 19 ...

Reviews: