Bryston 6B SST Stereo Amplifier User Manual
Contents
1. CHANNEL MUTE 33Vdc SENSITIVTY AND GAIN CHANNEL 1 SWITCH B5Vde SINGLE ENDED xm INPUT DEDICATED HIGH od INPUT INPUT enn gt current power FPO SELECT gt POLARITY Ami OUTPUT SUPPLY XLR AND SWITCH SWITCH EAE PHONE gt INPUT 33Vdc CLIPING IL y AND LED CURCUIT MONITOR SOFT START AND LOGIC CONTROL CHANNEL MUTE AC INPUT gt 33Vdc SENSITIVTY AND GAIN CHANNEL 2 SWITCH SINGLE ENDED eee INPUT DEDICATED HIGH INPUT INPUT POWER CURRENT POWER Bd an SELECT gt POLARITY AWDUDTTS OUTPUT SUPPLY AS XLR AND SWITCH SWITCH SUPPI PHONE gt INPUT 33Vde CLIPING LED CURCUIT MONITOR CHANNEL MUTE 33Ndc SENSITIVTY AND GAIN CHANNEL 3 SWITCH 85Vde SINGLE ENDED iG INPUT gt INPUT DEDICATED HIGH E INPUT INPUT BUFFER POWER FP CURRENT power HON oe SELECT gt POLARITY eae Ape OUTPUT SUPPLY A n XLR AND SWITCH SWITCH SUVS PHONE INPUT 33Vdc REMOTE TRIGGER ON CLIPING AND CURCUIT MONITOR LED BERTSO BSET TOPLE 7777707 74 Typical Band pass Noise 50 60 Power supply artifacts are all below 95 dBu Si balanced input with 23dB gain shown 80 90 10 e 12. 0 009 0 008 0 007 0 006 0 005 Graph shows that distortion is essentially unaffected by load 4v balanced input shown 0 004 0 003 0 002 0 001 we o 50 100 200 500 1k 2k 5k 10k 20k Typical IMD Sweep 0 01 0 009 0 008 0 007 0 006 0 005 0 004 0 003 0 002 0 001 8 ohm 300w 1 we 3k 4k 5k 6k 8k 9k 10k 20k Hz 11 BERTSO BSET MOREE 77777774 Damping Factor 9 800 70 o 60 50 40 o 30 20 e 10 we o 50 100 200 500 1k 2k 5k 10k 20k Hz Typical Crosstalk 0 20 30 40 50 60 channel 2 reading with channels 1 amp 3 driven to 300w into 8 ohms 70 a 80 90 100 channel 2 reading with channels 1 amp 3 driven to 600w into 4 ohms 110 120 130 140 150 50 100 200 500 1k 2k 5k 10k 20k Hz 12 68500 Power Output
3. 6BssT POWER AMPLIFIER OWNER S MANUAL 6BSST THREE CHANNEL POWER AMPLIFIER Table of Contents General Introduction Page 1 Instalation and Ventilation Rear Panel Input Settings Connections Page 2 Setting Input Selector Switch Balance Input Connector Configuration Setting Polarity Setting Input Sensitivity Output Binding Posts and Polarity Page 3 Front Panel Description Page 4 LED Indicators Power up Sequence LED Indicators Operating Conditions Power Control Panel Page 5 Master Curcuit Breaker AC Power Input Local Auto Switch Local External Switch Rack Mounting Instructions Page 6 Individual Module Removal Channel Fuse Type Location 5 1 Typical Home Theatre Setup Page 7 Block Diagram of the 6BSST Page 8 Typical Performance Graphs Page 9 12 Technical Specifications Page 13 Important Warranty Information Back Cover BERTSO BSET MOREE 777777 Introduction Thank you for choosing the 6BSST Three Channel Power Amplifier Bryston welcomes any suggestions you may have or comments regarding the operation of your amplifier We consider you our customer to be Bryston s most important resource and your opinion is very much appreciated Description The 6BSST is a modular design 3 x 300W per channel audio power amplifier Each channel selects a balanced or single ended input Each channel selects a gain of 29dB 1v 23dB 2v or 17dB 4v Each channel input may be operated invert ed or non i
4. 2 Balanced Input connector Imp 20k Pin SMIN NEG EU E ecd This input connector accepts standard XLR or 1 4 TRS Use quality 10096 shielded cables with gold plated connectors 4 POAR SANPUT for 0OW Gran 5 XLR type 180 SINGLE ENDED INPUT OUTPUT 300 8 1 3 Single Ended Input Un balanced input Imp 50k This input connector accepts standard RCA or Phono connectors gt lt Use quality 100 shielded cables with gold plated connectors 3 9 7 WARNING RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER CONNECTIONS SEE OPERATING MANUAL BEFORE USING Balanced input Vs Single ended input The balanced input requires a balanced pre amp source Balanced systems provide noise protection from external electrical interference 5 cable length be very long 50m or longer The single ended or unbalanced input is provided for pre amps without balanced output Single ended cables should be kept to 20 7m or less In general never use longer cables than necessary never coil excess cable length and run sig nal wires away from AC power or speaker cables Fig 1 4 Polarity Switch 0 or 180 degrees Each 6BST channel gives the user the option of inverting the polarity of the input signal 180 degrees Polarity inversion is application specific The normal operating position is 0 degrees 5 Input Sensitivity Gain Switch The optimum gain setting will depend upon t
5. Gain Select and Sensitivity Input Impedance Distortion THD noise Noise Slew Rate Power Bandwidth Damping Factor Dimensions Rack mount version 17 version Weight 6BSST THREE CHANNEL POWER AMPLIFIER Technical Specifications 29dB 1 7Vin 300W 8 Ohms 1V Position 23dB 3 4Vin 300W 0 8 Ohms 2V Position 17dB 6 8Vin 300W 8 Ohms 4V Position 50 Kohms single ended 20 Kohms balanced lt 0 005 20Hz to 20kHz at 300 watts into 8 ohms 0 00796 20Hz to 20kHz at 500 watts into 4 ohms Measured with input shorted 20Hz to 20kHz gt 112dB below rated output 29dB gain 75dBu gt 115dB below rated output 23dB gain 78dBu gt 118dB below rated output 17dB gain 81dBu gt 60 volts per microsecond lt 1 Hz to over 100 kHz Over 500 at 20 Hz ref 8 ohms 48 3 x 13 3 x 39 4cm 19 x 7 x 20 5 with handles mounted rack depth 46 7cm 18 375 43 2 x 13 3 x 39 4cm 17 x 7 x 19 approx 36kg 80 Ibs Power Consumption amp Heat Load single channel 300W 8 ohms 3 channels 300W 8 ohms Max Heat Dissipation 8 ohms 625 Watts 2100 Watts 4100 Btu Hr single channel 500W 4 ohms 1075 Watts 3 channels 500W 0 4 ohms 3450 Watts Max Heat Dissipation 4 ohms 6600 Btu Hr At Idle 225 Watts 13 IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user
6. X 3 Carefully reinstall the channels PN DO NOT REMOVE SCREWS FROM RACK MOUNT BRACKET 095 5 REMOVE ALL 6 32 SCREWS THE BOTTOM The removal of the feet should not be necessary as clearance below the amplifier MUST be at least 1U when rack mounting BOTTOM VIEW BERTSO SBSUT Typical 5 1 Home Theatre Setup Left Front Right Front e POLARITY BALANCED SENSITIVITY POLARITY BALANCED SENSITIVITY POLARITY BALANCED SENSITIVITY o tr toow en o MET o MED av LEM m m 3 5 Ww 180 SINGLE ENDED 180 SINGLE ENDED 180 SINGLE ENDED INPUT INPUT INPUT oO OUTPUT OUTPUT OUTPUT ET 1 EU 7 EU 1 WARNING RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKE JARNING RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER Risk OF HAZARDOUS FNERGY MAKE PROPER SPEAKER CONNECTIONS SEE OPERATING MANUAL BEFORE USIN CONNECTIONS SEE OPERATING MANUAL BEFORE USING ICTIONS SEE OPERATING MANUAL BEFORE USING Powered Subwoofer Left Rear Right Rear e POWER UP LOCAL OUT IN LOCAL e MADE IN CANADA FABRIQUE AU CANADA EXTERNAL auto PETERBOROUGH ONTARIO CANADA 4BSST 2x w per ch JOCXGSUOGU 2777777
7. condition When the channel has cooled to a safe operating condition the channel will return to normal operation Persistent Thermal shutdown indicates steps need to be taken to increase airflow across the channel or channels heat sink Also see installation section on ventilation BERTSO 7777777 Power Control Panel 1 Master circuit breaker The 6BSST uses a magnetic trip circuit breaker 1 to protect the amplifier This switch should be OFF when installing the 6BSST When switched OFF cH d all A C power is removed from the amplifier including standby power SSI exci cava The circuit breaker is not the day to day power switch and should be switched and Ad een TIERUTOSN 4 left ON after the installation is complete Use the SST POWER switch or an exter EXTERNAL TURN ON nal control voltage to Power up or Power down the amplifier ON Should the breaker trip lower or remove the amplifier input signals Switch the 1 5 breaker to the ON position Then power the unit up normally The circuit breaker must be ON at all times for the 6BSST to operate Ee T 2 AC power input i This is a high current plug for the power cord receptacle Check that the voltage rat ing at the right of the connector conforms with your locality With the circuit breaker OFF insert the power cord into the 6BSST then plug the other end to an approprate A C power outlet 2 3 Power Up Local A
8. to the presence of un insulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the pro vided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by t
9. 10 12 o dBu relative to a reference of 0 7746 Volts 130 20 50 100 200 500 1k 2k 5k Hz Typical THD N Harmonic Content 10 0 a 30 The harmonic content of the 6BSST is all even order 40 mma 50 60 oum 70 80 90 lt 100 110 E 20 40k 60k 80k 100k 120k Hz 6BSST THREE CHANNEL POWER AMPLIFIER Typical Frequency Response 0 5 0 4 0 3 0 2 0 1 8 ohm 300w 01dB 20Khz 0 0 d B 0 2 0 3 0 4 0 5 0 6 07 0 8 0 9 woe o 50 100 200 500 1k 2k 5k 10k 20k 50k Hz Typical Phase Response 15 14 13 12 11 10 9 8 6 4 ohm 600w 5 4 3 2 8 ohm 300w 1 a TTYTJTTTTTTTTTTTTTTTTT TT TTTTT TT FTT TTTTTTTTTTTTTTTTTTTTTTTTTTT TTT TT TT TTTTT T TT m o 50 100 200 500 1k 2k 5k 10k 20k 10 BERTSO SBSUP MOREE ANNE POWER ANAIE Typical THD N Sweep
10. 7777 6 Output binding posts amp polarity The RED binding post is connected to the amplifier output Connect to this post the terminal on the loudspeaker The BLACK binding post is connected to signal ground Connect to this post the terminal on the loudspeaker When the polarity switch is set for 0 degrees normal operation the output at the RED binding post is in phase with the input signal When the polarity switch is set for 180 degrees inverted operation the the output at the RED binding post is 180 degrees out of phase with the input signal The Output binding posts provide three different interconnect options Combinations may be used when bi wiring See fig ure 2 below Cables should be kept as short as practical and should never be terminated with connectors that may become confused for AC power connectors Cables should be dressed away from input and power cables 1 Banana plugs offer a quick disconnect option Before inserting a banana plug into the binding post be sure to tighten the post nut to avoid rattling and to provide full insertion of the banana plug Gold plated locking banana plugs are available from Bryston 2 Spade lugs provide high contact area and secure fastening Lugs should be gold plated See diagram for details Post diameter is 5 16 8mm lug width 5 8 16 mm Gold plated spade lugs are available from Bryston 3 Stripped bare wire up to 3 gauge can be inserted through the hole in the bind
11. aler to qualify for warranty service The warranty is transferable from the original owner to a subsequent owner as long as a copy of the bill of sale from the original authorized Bryston dealer accompanies the re sale The copy of the bill of sale to any subsequent owner need ONLY include the Name of the Bryston Authorized Dealer and the Model and Serial number of the Bryston product The warranty will only be honored in the country of the original purchase unless otherwise pre authorized by Bryston BRYSTON SERVICE in CANADA BRYSTON SERVICE in the USA BRYSTON SERVICE outside Canada and the USA Postal address PO BOX 2170 Stn Main 79 COVENTRY ST Suite 5 contact your local distributor or ga NEWPORT VERMONT CHECK OUR WEB SITE www bryston ca U S A 05855 2100 E MAIL BRYSTON DIRECTLY cdnser bryston ca Courier address 677 NEAL DRIVE FAX BRYSTON DIRECTLY 01 705 742 0882 PETERBOROUGH ONTARIO PHONE 802 334 1201 PHONE BRYSTON DIRECTLY 01 705 742 5325 CANADA K9J 6X7 FAX 802 334 6658 PHONE 705 742 5325 E mail usaser bryston ca FAX 705 742 0882 E mail cdnser bryston ca 6BSST_MANUAL_20060324
12. ed volume controls are warranted for three years from the original date of manu facture The warranty includes parts and labour Bryston will remedy the problem by repair or replacement as we deem necessary to restore the product to full performance Bryston will pay ship ping costs one way usually the return portion during the first three years of warranty coverage In the event of a defect or malfunction contact Bryston s repair centers for return authorization Products must be returned using original packaging material only Packing material may be purchased from Bryston if necessary This warranty is considered void if the defect malfunction or failure of the product or any component part was caused by damage not resulting from a defect or malfunction or abuse while in the possession of the customer Tampering by persons other than factory authorized service personnel or failure to fully comply with Bryston operating instructions voids the warranty This warranty gives you specific legal rights and you may also have other rights which may vary from province to province and country to country As of 2006 02 22 Bryston will only warranty Bryston products purchased through authorized Bryston dealers Bryston products with a date code of 0608 or higher date code format is yyww where yy is the two least significant digits of the year and ww is the week of the year must be accompanied by a copy of the bill of sale from a Bryston authorized de
13. essing cables to and from the amplifier Never operate the 6BSST in a vertical position Wiring the 6BSST also see rear panel description Speaker wires should be as short as practical Use quality wire and if runs are more than 3 meters use at least 12 gauge wire The speaker binding posts will accept wire up to 3 gage in size Bryston can custom build cables for your applica tion A C power Before plugging in the power cord be sure your 6BSST is specified for the correct a c voltage for your locality The voltage is listed to the right of the power input connector The circuit feeding the 6BSST should be sufficient so as not to cause the circuit breaker to trip Note the 6BSST when operated with all channels at maximum power into 4 ohm loads can consume all the available power in a normal household circuit therefore a dedicated electrical circuit may be necessary with this situation Never lift the safety ground to the amplifier or remove the ground pin from the plug Power line conditioners will not improve the 6BSST performance in fact most of the time they restrict the flow of cur rent in the power line to the amplifier reducing performance at high output levels BERTSO 77777 Rear Panel Input Output Connections 1 Input Select Switch Each 6 55 channel gives the user the option of switching between Baws either balanced input or single ended input 2 XLF HONE ME Hon 13 THEATRE SETS
14. he manufacturer or sold with the apparatus When a cart is 9 Oo go 3062 Coun used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS SUCH AS VASES ARE PLACED ON THE EQUIPMENT TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE BRYSTON LIMITED WARRANTY Bryston analog audio circuits 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 circuits 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 excluding motoriz
15. he source pre amp operating level and or personal preference The 1v setting is used when the source is single ended or from a transformer coupled balanced source This is the home theatre setting for single ended or un balanced operation The 1v setting provides the most amplifier gain 29 dB 1v in 100w 8 ohms noise 112 dB A signal level of 1 7v at the input is required to deliver 300W into 8 ohms rated output The 2v setting is used when the sources output is actively Balanced This is the home theatre setting for balanced operation Or use this setting with any systems where the volume control rotation is limited to the bottom half of the control or less The 2v setting provides an amplifier gain 23 dB 2v in 100w 8 ohms noise 115 dB A signal level of 3 4v at the input is required to deliver 300W into 8 ohms rated output The 4v setting is used when the source pre amp has a high output level or in ultra sensitive systems where the volume control rotation range is still limited when using the 2v setting Some pre amps may be unable to deliver enough level to use this setting The 4v setting provides an amplifier gain 17 dB 4v in 100w 8 ohms noise 118 dB A signal level of 6 8v at the input is required to deliver 300W into 8 ohms rated output The noise is referenced in dB below rated output of 300 watts Different input configurations result in slightly different 2 BERTSO BSET MOREE 77
16. ing post and held in place by tightening the post knob Additional tightening pressure can be achieved using a coin in the slots of the knob Do not over tighten or the binding post may become damaged Note that copper wire is malleable and may require further tightening after the initial installation Spade lug dimensions 7 Rear Handle Page 2 Fig 1 The handle on each channel is to protect the connectors and removal of the channel from the chassis This handle should never be used to carry the 6BSST Use only the front panel handles for carrying the 6BSST or lift from the sides of the chassis if not equipped with front panel handles BERTSO 77777 7 Front Panel 1 SST POWER switch The front panel label SST POWER is a touch sensitive membrane switch used to apply or remove line power to the 6BSST circuitry Push firmly the center of the switch until the power up sequence begins Push again and the 6BSST will power down Note the rear circuit breaker must be on for the 6 55 to power up 2 LED Indicators Each 6BSST channel has a LED indicator to monitor the following channel conditions UNLIT indicates channel has no power RED indicates channel is muted power up down sequence GREEN indicates channel operation is normal FLAsHING RED indicates channel clipping ORANGE indicates channel thermal shutdown Power up sequence After pushing the SST POWER switch each channe
17. l led will turn from unlit to red mute When the power supplies have stabilized the channel will come out of mute and the led will change to green normal operation Unlit led No power The 6BSST channel led when unlit indicates no A C mains power is present at the channel If all channel led indicators are unlit the GBSST probably needs only to be powered on A single led not lighting possibly indicates blown channel fuses When checking fuses switch off the circuit breaker on the rear panel or unplug the power cord Use only the specified quick acting 4 amp 250V 5mm x 20mm fuses See page 6 for the fuse locations Clipping flashing red Clipping occurs when the channel output level no longer can follow the level increase at the input Over driven outeeput condition When a 6BSST channel is driven into clipping the channel led will change from green to red then back to green when the level is reduced Flashing Red Momentary clipping can be tolerated however it indicates that maxi mum un distorted power has been surpassed and potential speaker damage may result if overload conditions persist Any amplifier that is constantly operated into clipping indicates a more powerful amplifier is needed for that application Thermal Shutdown orange The 6 55 channel has thermal shutdown circuitry to prevent damage due to overheating Should thermal shutdown occur the channel will mute and the channel led will turn orange indicating this
18. nverted operation 0 or 180 degrees The power up of the GBSST may be controlled by remote control voltage The 6BSST includes soft start power control circuitry to eliminate high inrush currents when A C power is applied Warranty see back page for details Shipping Box amp Packing Material Please keep the original shipping box and all packing material This will ensure the amplifier is protected in future transport In the unlikely event you have a problem and must return it for service you must use the proper packing material Ship the amplifier only in the original packing material as the unit is not insurable by carriers otherwise Installation see rack mounting section if applicable Ventilation The most important installation consideration is ventilation The 6BSST is a convection cooled amplifier Unrestricted air flow across its heat sinks is a must For this reason do not install anything directly above it Allow 3 5 2u to 5 3u inches of space above and to the sides of this amplifier Do not install directly above other heat generating equipment Should your instillation conditions be constricted then additional forced air cooling may be necessary Bryston can provide an optional fan package if required Any 6BSST channels thermally shutting down during operation indicates insufficient cooling and a remedy must be found for cooling the amplifier Provide a minimum 6 space to the rear of the 6BSST for ventilation and dr
19. r screw terminals Jae se pa rate 1 JSST 18 22 gage TNS gt wire d 4 fig W NUM EU 1 4 strip to other voltage controlled devices Note The OUT terminals are connected to the IN terminals once the 6BSST has powered up The control current is determined by the source equipment The carrying current of the OUT relay is 2 amps The 6 55 itself draws less than 2 ma from the control current when operating BERTSO SBSSP MOREE 77777 Rack Mounting Instructions The 6BSST 19 version may be rack mounted with or without the ability to remove the channels If removal of the chan nels is desired then the shipping screws securing the channels need to be removed REMOVE 4 REMOVE 3 6 32 SCREWS 3 32 SCREWS FROM THIS TOP VIEW FROM THIS SIDE E SIDE gt Removing the channels makes rack mounting far easier as the chassis will be much lighter Before removing any screws from the 6BSST be sure the power cord is removed from the unit Remove the screws indicated on the top and bottom views plus the ones described on the sides Pull gently on the channel handle to remove the channel Be prepared to use N N N both hands to handle the channel DO NOT REMOVE At should not be necessary to remove SCREWS FROM the power input module RACK MOUNT Install GBBSST chassis in rack BRACKET REMOVE 9 SUREVS 632
20. uto switch A In Local position either the front panel SST POWER switch or an FABRIQUE AU CANADA external voltage controls the power up of the 6BSST B Auto is used when the 6 55 is powered from a switched power outlet The SST POWER switch and or control voltage will function normally after the initial power up 4 External control voltage power up Local external switch A To power up the 6BSST using an external control voltage Supply a 4v to 12v A C or DC control voltage to the IN terminals of connector 5 Use paired wire of 22 gauge to 18 gauge sufficient in length between the source device and the 6BSST see W Select switch 4 to External 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 5 for the control of other equipment The Removal of the control voltage Ov causes the 6BSST to turn off and the control voltage at the OUT terminals is interrupted B In the Local setting of switch 4 the 6BSST will ignore the control voltage and power up only by using the front panel SST POWER switch or as in section 3 above If a control voltage is present at the IN terminals it will still be available at the OUT terminals after the power up sequence Control Voltage equipped source Control voltage wire preparation 4 to 12v ac or dc fo
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