Bryston MPS-2 User manual

MPS2
For use with preamp models
BP26, BP26DA, BP26MC, BP26P & BP1.5
and 10B-EPS crossovers
POWER SUPPLY
OWNER’S MANUAL

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.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not 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. 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 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 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 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 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 dealer 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.
Postal address: P.O. BOX 2170, Stn. Main
PETERBOROUGH, ONTARIO
CANADA K9J 7Y4
Courier address: 677 NEAL DRIVE
PETERBOROUGH, ONTARIO
CANADA K9J 6X7
PHONE: [phone]
FAX: [phone]
E-mail: [e-mail]
79 COVENTRY ST., Suite 5
NEWPORT, VERMONT
U.S.A. 05855-2100
PHONE: [phone]
FAX: [phone]
E-mail: [e-mail]
BRYSTON SERVICE in CANADA:BRYSTON SERVICE in the USA:
contact your local distributor or
CHECK OUR WEB SITE: www.bryston.ca
E-MAIL BRYSTON DIRECTLY: [e-mail]
FAX BRYSTON DIRECTLY: 01-705-742-0882
PHONE BRYSTON DIRECTLY: 01-705-742-5325
BRYSTON SERVICE outside Canada and the USA:

INTRODUCTION
Thank you for choosing this Bryston product. Bryston
welcomes any suggestions or comments you may have
about our products. We consider you, our customer, to
be Bryston’s most important resource, and your opinion
is very much appreciated.
MPS2 POWER SUPPLY SPECIFICATIONS:
Dimensions: 17” (or 19”) x 2.25” x 11”
Weight: actual: 15.5 lb. (7.03Kg)
shipping: 19.3 lb. (8.75Kg)
Electrical: 100V~/50-60Hz/100W
110V~/50-60Hz/100W
120V~/50-60Hz/100W
200V~/50-60Hz/100W
220V~/50-60Hz/100W
230V~/50-60Hz/100W
240V~/50-60Hz/100W
Outputs: main outputs: ±37V/250mA
+12V/350mA
remote or switched trigger outputs:
  12v@≤20mA
GENERAL DESCRIPTION
The MPS2 outboard power supply provides bipolar
DC power for the various Bryston preamps and cross-
overs, including the BP26 series of preamps, the BP1.5
Phono equalization stage and 10B crossovers specifi-
cally designed to be used with external power supplies
(10B-LR-EPS, 10B-STD-EPS & 10B-SUB-EPS) .
The MPS2’s power ON/OFF switch is a toggle
switch is located on the front panel along with a green
LED to indicate power ON.
REMOTE ON/OFF FUNCTIONS
When the MPS2 is turned on, any BP26 preamps,
or other Bryston products connected to its 4 main out-
puts, will also be turned on. Also, any other equipment
connected to the MPS2’s remote trigger outputs or
switched remote trigger outputs may also be turned on.
On the rear of the unit there are five 2 pin terminal
blocks that provide control signals for remote on/off
functions. Plug-in screw adjust terminal blocks are
provided for all 5 of these connectors. These terminal
blocks accept bare wires between 12 and 26 AWG.
Insulated wires should be stripped to expose .3 inches
(5/16” or 8mm) of bare wire. Use a small blade screw-
driver (<1/8”) to open and close the wire cages. Do not
overtighten; maximum torque should be 4.5 pound-
inches (0.5N-m) or less.
REMOTE ACTIVATION of OTHER EQUIPMENT VIA THE MPS2
To turn on a Bryston amplifier by turning on the MPS2:
1st) Connect insulated wires from the 2 pin REMOTE
TRIGGER connector on the rear panel of the MPS2
to the two IN terminals on a Bryston power amplifier
remote control connector intended for a 4~14V AC/DC
control signal.
2nd) Put the amplifiers “EXTERNAL TURN ON” switch in
the EXTERNAL position for the amplifier to respond
to remote control turn-on signals (see figure 2).
To turn a Bryston power amplifier OFF and ON when the
BP26 pre-amp is MUTED and unMUTED respectively:
1st) Connect the SWITCHED TRIG OUT pins of one of the
MPS2’s 4 outputs to the two IN terminals on the power
amp’s remote control connector.
2nd) Place the power amplifiers EXTERNAL TURN ON
switch in the EXTERNAL position.
Figure 2: Turning SST series power amps on and off via the BP26 MUTE switch
Figure 1: Turning SST series power amps on and off via the MPS2 power supply

MPS2 POWER SUPPLY
REMOTE TRIGGER OUTput PINS A 12Vdc signal will be present on the OUT pins of the Remote Trigger Connector whenever the MPS2 is activated. This control signal can be used to operate other equipment with suitable remote control inputs, such as Bryston SST series power amps.
SWITCHED TRIGGER OUTPUTS Whenever a BP26, which is connected to one of the 4 MPS2 outputs, is turned on and NOT muted, a control sig- nal of 12Vdc will be present on the respecitve SWITCHED TRIGGER OUTPUT pins of the of the MPS2 power sup- ply. This control signal can be used to turn on suitably equipped ampliers and other equipment.
POWER SUPPLY CORD Use only power sup- ply cords supplied by Bryston Ltd. to connect the MPS2 power supply to other Bryston equip- ment. The MPS2 is not intended to operate any equipment other than specically designated Bryston preamps, cross- overs and other audio processors.

The MPS2 power supply can power several different Bryston products. Different products, however, may
require different power supply interconnect cables, such as those shown shown below. It is important to use
the correct power supply cable.
WARNING! The connector terminals of main outputs 1, 2, 3 & 4 on the MPS2 power supply rear
panel are HAZARDOUS LIVE and present a risk of electric shock. Use only preassembled power inter-
connect cables provided by Bryston for connection of these terminals.

MPS2_MANUAL_20060324
REPLACING FUSES IN THE MPS2 POWER SUPPLY
CAUTION: These service instructions are for use by qualied service personnel only. To reduce the risk of
electric shock do not perform any servicing other than that contained in the operating instructions unless you
are qualied to do so.
All fuses are 5mm x 20mm, time lag type and are accessible only by removing the top cover. When
replacing fuses, disconnect the power cord before opening the unit!
Recommended replacement fuses:
100V~ models: T 2.5A L 250v Littlefuse 218 02.5
110V~ models: T 2.0A L 250v Littlefuse 218 002
120V~ models: T 2.0A L 250V Littlefuse 218 002
200V~ models:T 1.25A L 250v Littlefuse 218 1.25
220V~ models: T 1A L 250v Littlefuse 218 001
230V~ models: T 1A L 250v Littlefuse 218 001
240V~ models: T 1A L 250v Littlefuse 218 001