Bryston 28BSST Stereo Amplifier User Manual
Contents
1. YAMOd 59 95 155 982 MAIA 391 LH9IH L MAIA LNOUS N 7 SQV AY 5 WY 958 SS CLA WSS CA WN WN ag SS UA 1 8 GA X Gy NG UL SS SS GLa WN SV t 9 SS A SS Ll N Y Tanva sea stats 256 OSIY SANYA L4 TANYA 51 ows BE 22 2 gt i 401 wy MELLEL 99 oe 8 8 X PIP S L 2118 1334 gle osoa cost sei owe serz 0592 serz 0002 28B SST Amplifier Technical Specifications Power Output 1000 watts into 8Q Gain Sensitivity Select 29 dB gain setting 1V sensitivity 100 Watts output 80 with a 1V input 1000 Watts output into 8Q with a 3 2V input 23 dB gain setting 2V sensitivity 100 Watts output into 8Q with a 2V input 1000 Watts output into 8Q with a 6 4V input Input Impedance Single ended 30KQ Balanced 30KQ each leg Distortion IM or THD noise lt 0 007 20Hz to 20kHz at 1000 watts into 80 Noise Measured with input shorted 20Hz to 20kHz gt 110dB below rated output 29dB gain 75dBu gt 113dB below rated output 23dB gain 78dBu Slew Rate gt 60 volts per microsecond Power Bandw2. 2SBssT POWER AMPLIFIER OWNER S MANUAL 28B SST Amplifier Table of Contents General Introduction Page 1 Description Installation and Ventilation Rear Panel Input Settings Connections Page 2 Setting Input Selector Switch Balance Input Connector Configuration Setting Input Sensitivity Output Binding Posts Page 3 Power Control Panel Page 4 Master Circuit Breaker AC Power Input Local Auto Switch Front Panel Description Page 5 LED Indicator Power up Sequence LED Indicator Operating Conditions External Dimensions Page 6 Technical Specifications Page 7 Important Safety Instructions amp Warranty Information Back Cover in PSST COLD 28B SST Amplifier Introduction Thank you for choosing the 28B SST C SERIES mono block 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 28B SST The 28B SST is a single channel 1000 Watt audio power amplifier 28B SST selects a balanced 3 pin XLR 4 phone plug or single ended RCA phono plug input A gain of 29dB or 23dB may be selected The 28B SST includes soft start power control circuitry to eliminate high inrush currents when A C power is applied The power up or turn on of the 28B SST may be activated by a remote control voltage 4v
3. 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 not use this apparatus near water 6 Clean only with dry cloth 7 Do block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other 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 the manufacturer or sold with the apparatus When a cart is 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 any way su
4. In the event of a defect or malfunc material only Packing material may product or any component part wa This warranty gives you specific le As of 2006 02 22 Bryston will onl owner to a Subsequent owner as loi years of warranty coverage ters for return authorization Products must be returned using original packaging be purchased from Bryston if necessary This warranty is considered void if the defect malfunction or failure of the s caused by damage not resultin Tampering by persons other than factory authorized service personnel or failure to full gal rights and you may also have ly warranty Bryston products purchased through of 0608 or higher date code format is yyww where is the two least significant digi accompanied by a copy of the bill of sale from a Bryston authorized ng as a copy of the bill of sale from the original au from a defect or malfunction or abuse while in the possession of the customer comply with Bryston operating instructions voids the warranty other rights which may vary from province to province and country to country authorized Bryston dealers Bryston products with a date code 5 of the year and ww is the week of the year must be lealer to qualify for warranty service The warranty is transferable from the original horized 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 Deal
5. amplifier has pow out oe ieee ered up The control current is determined by the source equipment The carrying current of wire the OUT relay is 2 amps The 28B SST control circuitry itself draws less than 2 mA from the IN control current when operating 25r stip 114 of insulation off wires 28B SST Amplifier FRONT PANEL refer to illustration above 13 28B SST power switch The front panel label 28B sst is a push on push off switch used to apply or remove AC line power to the soft start circuitry Note the rear circuit breaker must be on for the amplifier to power up 14 LED Indicators The 28B SST has an LED indicator to monitor the following conditions UNLIT indicates the amplifier is turned off indicates the amplifier is muted as in a power up sequence GREEN indicates the amplifier operation is normal FLASHING RED indicates the amplifier clipping ORANGE indicates thermal shutdown Power up sequence After pushing the 28B SST POWER switch the LED will turn from unlit to red mute When the power supply has sta bilized the amplifier will come out of mute and the LED will change to green normal operation Unlit LED power off The 28B SST LED when unlit indicates no A C mains power is present and the amplifier probably needs only to be powered on or the rear panel circuit breaker is switched off Should the amplifier not power on whe
6. than necessary never coil excess cable length and keep signal wires away from AC power or speaker cables 5 Level Control PRO models only The level control will attenuate the input signal level from OdB fully clockwise through 14dB fully counter clockwise 2 5 92254 28B SST Amplifier 6 Output binding posts The RED binding posts are the in phase amplifier output Both red binding posts are the same Connect either red binding post to the terminal on the loudspeaker The second red binding post is provided for bi wiring or second loudspeaker The BLUE binding posts are the inverted phase amplifier output Connect either blue binding post to the terminal on the loudspeaker The second blue binding post is provided for bi wiring or second loudspeaker At no time should either output be connected to a ground or chassis Failure of the amplifier may result Never connect either output in parallel with another amplifier N B The minimum recommended loudspeaker load is 4 ohms 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 e Banana plugs offer a quick disconnect option Before inserting a banana plug into the bind
7. to 12v ac or dc 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 28B SST amplifier is convection cooled Unrestricted air flow across the 28B SST 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 neces sary Bryston can provide an optional fan package if required Thermal shut down during operation indicates insufficient air flow and a remedy must be found for cooling the amplifier Provide a minimum 6 space to the rear of the amplifier for ventilation and dressing cables to and from the amplifier Never operate the amplifier in a vertical position Wiring the 28B SST amplifier also see rear panel description Speaker wires should be as short as practical Use
8. ch 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 motorized 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 ion contact Bryston s repair
9. er and the Model and Serial number of the Bryston product The warranty will only be honored in the country of the original purchase less otherwise pre authorized by Bryston BRYSTON SERVICE in CANADA Postal address PO BOX 2170 Stn PETERBOROUGH ONTARIO CANADA K9J 7Y4 Courier address 677 NEAL DRIVE PETERBOROUGH ONTARIO CANADA K9J 6X7 BRYSTON SERVICE in the USA 79 COVENTRY ST Suite 5 NEWPORT VERMONT U S A 05855 2100 FAX E mail PHONE 705 742 5325 FAX 705 742 0882 E mail cdnser bryston ca PHONE 802 33 802 33 BRYSTON SERVICE outside Canada and the USA contact your local distributor or CHECK OUR WEB SITE www bryston ca E MAIL BRYSTON DIRECTLY cdnser bryston ca FAX BRYSTON DIRECTLY 01 705 742 0882 PHONE BRYSTON DIRECTLY 01 705 742 5325 usaser bryston ca 28BSST_MANUAL 20061117
10. idth lt 1 Hz to over 100 kHz Damping Factor Over 300 at 20 Hz ref 8 ohms Dimensions maximum dimensions for 19 w version with handles 48 3 x 20 5 52 1cm 19 x 8 05 x 20 525 d See page 6 for more complete details Weight approx 36 4kg 80 Ibs Power Consumption amp Heat Load Power consumption at Idle 215 Watts Max heat dissipation at idle 733 Btu Hr Power consumption 1000W output into 8 ohms 1486 Watts Max Heat dissipation 1000 Watts output into 8 ohms 1658 Btu Hr Maximum power output at onset of clipping into 80 1300 Watts Power consumption at 1300 Watts output into 80 2640 Watts Max heat dissipation 1300 Watts output 80 4572 BTU Hr Power output under normal operating conditons 1 8th max pwr 161 Watts Current consumption under normal operating conditons 9 3 Amps heat dissipation 1300 Watts output 80 955 BTU Hr IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user 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 1 Read these instructions
11. ing 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 e 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 e Stripped bare wire up to 3 gage can be inserted through the hole in the binding 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 _ a y PLUG 92254 28B SST Amplifier Power Control refer to figure 1 on page 2 7 Master circuit breaker The 28B SST amplifier uses a magnetic trip circuit breaker to protect the amplifier This switch should be OFF during installation When switched OFF All A C power is removed from the amplifier including standby power The circuit breaker is not the power switch and should be switched to and left ON after the installation is complete Use the 28B sst front panel power switch or an external control voltage to Power up or Power down the amplifier Should the breaker
12. l switch amp Interface Connector e To power up the SST amplifier using an external control voltage 1 The circuit breaker 8 and front panel power switch 13 must both be ON 2 Supply a 4v to 12v A C or DC control voltage to the IN terminals of connector 11 3 Use paired wire of 22 to 18 gage sufficient in length between the source device and the SST amplifier 4 Set slide switch item 11 in figure 1 page 2 to External The amplifier will now power up only when the control voltage is present on and the front panel push button power switch is ON depressed Immediately following power up the control voltage will appear at the OUT terminals of the interface connector item 10 on figure 1 page 2 also see below for the control of other equipment The removal of the control voltage Ov or releasing the front panel power switch causes the amplifier to turn and the control voltage at the OUT terminals is interrupted In the Local setting The 28B SST amplifier will ignore the control voltage and power up only by using the front panel 28B SST POWER switch or as in section 3 above If a control voltage is pres Gay ie ent at the IN terminals it will still be available at the OUT terminals after shown below that is supplied with your the power up sequence 28Bsst amplifier Note The OUT terminals are connected to the IN terminals once the 28B SST
13. n the power switch is pushed see the installation instructions Clipping flashing red Clipping occurs when the channel output level no longer can follow the level increase at the input Over driven input condition When the 28B SST is driven into clipping the 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 maximum undis torted 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 28B SST has thermal shutdown circuitry to prevent damage due to overheating Should thermal shutdown occur the amplifier will mute and the LED will turn orange indicating this condition When the amplifier has cooled to a safe operating condition the 28B SST will return to normal operation Persistent Thermal shutdown indicates steps need to be taken to increase airflow across the heat sink Also see installation section on ventilation lt N 768170 BL LIAIVH NON SNOISNAWIO HOIHALYG ISS80Z 02 01 9002 oszi seset sisa 7 SNOISNINIO TY 1300 20 SNOISNIWIG
14. quality wire and if runs are more than 3 meters use at least 12 gage wire The speaker binding posts will accept wire up to 3 gage in size Bryston offers speaker cables and amp interconnects for your application Check our website under products cables www bryston ca for more information A C power Before plugging in the power cord be sure your 28B SST amplifier is specified for the correct ac voltage for your locality The voltage is listed on the label found at the upper right of the rear panel The circuit feeding the 28B SST should be suf ficient so as not to cause the circuit breaker to trip 15 amp min Note the 28B SST when delivering maximum power into a 4 ohm load will consume all the available power a normal household circuit therefore dedicated electrical circuit may be necessary with this situation Never lift the safety ground to the amplifier nor remove the ground pin from the plug 10900 28B SST Amplifier Rear Panel Input Output Connections BALANCED INPUT 5 XLR JACK LAST veL PIN 3 Ground PETERBOROUGH ONTARIO CANADA WARNING RISK OF HAZARDOUS ENERGY PROPER SPEAKER CONNECTIONS ma p BALANCED GAIN INPUT 2998 SINGLE ENDED SINGLE ENDED INPUT POWER INLET POWER LINE OFF N OUT CIRCUIT BREAKER 12V TRIGGER Figure 1 1 Input Select Switch The INPUT SELECT switch gi
15. trip lower or remove the amplifier input signal also see section 9 below Switch the breaker to the position Then power the unit up normally The circuit breaker must be ON at all times for the 28B SST amplifier to operate 8 AC power input On the rear panel is provided a high current plug for the power cord receptacle Check that the voltage rating on the label item 12 in figure 1 page 2 conforms with your locality With the circuit breaker OFF insert the power cord into the 28B SST amplifier then plug the other end to an appropriate A C power outlet Switch the circuit breaker to on and observe the LED labeled Line Voltage Status Indicator 9 LINE VOLTAGE STATUS INDICATOR This LED will be on anytime the amplifier is plugged into a source of electrical power and the circuit breaker 8 is ON The amplifier cannot turn on unless the LED will is green Should the amplifier not power on and the LED is flashing remove the power cord from the rear of the amplifier and wait a few seconds then plug the power cord back in Should the LED be red a condition exists preventing the amplifier from powering up Reasons the applied electrical power is outside the operating range 120v unit connected to 230v Check the electrical ratings label on the rear panel to see if the voltage is correct for your location Otherwise consult your dealer or call the factory 10 amp 11 External control voltage power Local Externa
16. ves the user the option of switching between either balanced input or single ended input 2 Input Sensitivity Selection This switch sets the gain of the amplifier to either 23dB or 29dB The optimum gain setting will depend upon the source pre amp operating level and or personal preference Use the 23dB setting with any systems where the volume control rotation is limited to the bottom half of the control or less 3 Balanced Input connector input impedance 30KQ each leg When 3 pin XLR jacks are used pin 1 is ground pin 2 is positive and pin 3 is negative If your 28B SST is equipped with combination XLR 4 phone jacks as shown in the illustration above the XLR jack will have the same pinout and on the phone jack the TIP will be positive RING is negative and the SLEEVE is ground Use quality 100 shielded cables with gold plated connectors 4 Single Ended Input Un balanced input Imp 50KQ This input connector accepts standard RCA or Phono connectors Use quality 100 shielded cables with gold plated connectors Balanced input 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 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
Download Pdf Manuals
Related Search