SAE 2HP-D Manuale utente
2HP-D Main Amplifier Operator’s Manual
Special order stainless steel front panel shown.
PREFACE
CONGRATULATIONS. You have just acquired one of the most advanced audio components ever
developed.
Your SAE 2HP-D was designed to set new standards in virtually every performance category. Not only does the 2HP-D
utilize a dual-differential balanced design, to our knowledge, it is the world’s rst amplier to be balanced both electrically
and physically. Each circuit board in the active signal path is designed with mirror imaged traces with the ground-point, the
fulcrum of the design, positioned at its absolute center.
Other signicant advances in the amplier include:
1. Dual mono design with separate and independent power transformers, power switches and line cords;
2. High temperature (Class F rated) toroidal transformers each with 1930 VA;
3. Separate and independent transformer windings for the input and output stages;
4. Independent transformer windings for each half of the balanced ampliers;
5. Independent bridge rectiers for each half of the balanced ampliers;
6. Four layer circuit boards used throughout; each with separate power and ground planes;
7. Mirror imaged board layout with a perfectly centered ground point. The circuit is both electrically and physically balanced;
8. Solid copper bus bar;
9. Current feedback for improved amplier control and virtually unlimited slew rate;
10. Double transistor input stage;
11. Dual-DC Servos virtually eliminate any DC offset;
12. ThermalTrak output devices optimize bias in real-time;
13. All protection circuitry is optically coupled and outside the circuit path. It is self-resetting;
14. Built-in distortion limiter compares amplier input and output and supply voltage to output voltage before engaging.
When engaged, amplier clipping is eliminated and THD cannot exceed 1%;
15. User selectable forced air (fan) cooling may be engaged or disabled as necessary.
16. Virtual VU and Frequency Spectrum Display Meters. These meters uniquely show the ampliers instantaneous peak
power output and average power output simultaneously without the inertia that causes inaccuracies in mechanical meters.
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The lightning ash with arrowhead symbol, within an equilateral triangle, is
intended to alert the user to the presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of signicant 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.
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WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE
CAUTION: TO PREVENT ELECTRIC SHOCK, DO NOT USE THE AC (POLARIZED) PLUG WITH AN
EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY
INSERTED TO PREVENT BLADE EXPOSURE.
Extension cords are not recommended for use with this product.
Amplier Identication Record
This information is for your records and for future identication of the 2HP-D. Please take a moment to ll out all pertinent
data now, and as upgrades and/or options are installed. Whenever upgrades, inquiries and/or changes are requested, the
serial number will be required.
SERIAL NUMBER
DATE PURCHASED
DEALER’S NAME
DEALER’S ADDRESS/PHONE
IMPORTANT
Save all packaging in a dry place away from re hazards. Your amplier is a precision electronic instrument and should be
properly packaged any time shipment is made. In the unlikely event that you have to return your 2HP-D to the factory or
dealer for service or updating, the original packaging will best protect the unit from shipping damage.
In order to achieve the fullest exibility and enjoyment from your SAE 2HP-D, we recommend that you read this manual in
full before connecting the unit to your audio system.
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Warning: Each channel of the 2HP-D is a balanced bridge amplier, thus the negative speaker terminal is NOT a
ground, and cannot be connected to a system ground or a loudspeaker system with a common ground. Consult your
speaker manufacturer to ensure that any speaker in your system that will be connected to the SAE 2HP-D does NOT
have internal circuitry with a common ground.
Note: It is imperative that your 2HP-D be operated in a well-ventilated environment and that the immediate external
temperature be maintained as specied. If you need to stack any equipment directly above or below the amplier,
please engage the cooling fan to protect it from overheating.
SAFETY PRECAUTIONS
Please carefully read each item of the operating instructions and safety precautions before installing and using this product.
Use extra care to follow the warnings written on the product itself and/or in the operating instructions. Keep the operating
instructions and safety precautions for future reference.
CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE ANY OF THE COVER PANELS.
NO USER-SERVICEABLE PARTS INSIDE. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT ALLOW LIQUIDS TO SPILL OR OBJECTS TO FALL INTO ANY
OPENINGS OF THE PRODUCT.
THIS UNIT IS SUPPLIED WITH TWO 3-PIN GROUNDED AC PLUGS. ALWAYS INSERT THE AC PLUG INTO A GROUNDED
OUTLET. DO NOT REMOVE THE GROUND PIN OR DISABLE THE GROUND FOR ANY PURPOSE.
BEFORE MAKING ANY CONNECTIONS TO THE 2HP-D, FIRST TURN OFF THE POWER AND THEN DISCONNECT
THE AC POWER CORD.
WHEN INSTALLING THE 2HP-D IN YOUR SYSTEM, MAKE CERTAIN TO ALLOW A MINIMUM OF 6 INCHES OF VENTILATION
ON TOP AND ON EACH SIDE OF THE UNIT. IMPROPER VENTILATION OF THE UNIT MAY CAUSE OVERHEATING, WHICH
MAY DAMAGE THE UNIT AND CAUSE A FIRE. PLACE THE UNIT ON A SOLID SURFACE ONLY. I.E. NOT ON CARPET, ETC.
DO NOT PLACE THE 2HP-D NEAR HEAT SOURCES SUCH AS DIRECT SUNLIGHT, STOVES, HEAT REGISTERS,
RADIATORS OR OTHER HEAT PRODUCING EQUIPMENT.
TO PREVENT DAMAGE TO THE ANALOG OUTPUT CIRCUITRY, BE CERTAIN TO NEVER SHORT THE OUTPUT
SIGNAL TO GROUND. ENSURE THAT YOUR AUDIO OUTPUT CABLES DO NOT HAVE ANY INTERNAL SHORTS
BEFORE CONNECTING THEM TO THE 2HP-D.
IF REPLACEMENT OF THE AC LINE FUSE AND/OR ANY INTERNAL/EXTERNAL FUSE BECOMES NECESSARY,
REPLACE ONLY WITH SAME VALUE AND TYPE OF FUSE. NEVER BYPASS THE FUSE.
IF THE AC CORD BECOMES DAMAGED, DO NOT USE IT. IMMEDIATELY REPLACE IT WITH A NEW ONE OF THE
SAME OR BETTER RATING.
IT IS IMPERATIVE THAT 2HP-D BE OPERATED IN A WELL VENTILATED ENVIRONMENT AND THE IMMEDIATE
EXTERNAL TEMPERATURE BE MAINTAINED AS SPECIFIED. DO NOT STACK ANY EQUIPMENT DIRECTLY ABOVE,
BELOW OR TO THE IMMEDIATE SIDES OF THE 2HP-D AS TO PROTECT IT FROM OVERHEATING, AS WELL AS THE
CONTINUED FUNCTIONALITY OF ANY EQUIPMENT NEAR AND AROUND IT.
EACH CHANNEL OF THE 2HP-D IS A BALANCED BRIDGE AMPLIFIER, THUS THE NEGATIVE SPEAKER TERMINAL
IS NOT A GROUND AND CANNOT BE CONNECTED TO A SYSTEM GROUND OR A LOUDSPEAKER SYSTEM WITH
A COMMON GROUND. PLEASE CONSULT YOUR SPEAKER MANUFACTURER TO ENSURE THAT ANY SPEAKER
IN YOUR SYSTEM THAT WILL BE CONNECTED TO THE SAE 2HP-D DOES NOT HAVE INTERNAL CIRCUITRY WITH
A COMMON GROUND.
AFTER MARKET and THIRD PARTY MODIFICATIONS
PLEASE NOTE THAT ANY AFTER MARKET AND/OR THIRD PARTY MODIFICATION WILL VOID THE WARRANTY.
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Table of Contents
PREFACE ...........................................................................................................................................................................i
WARNING .......................................................................................................................................................................ii
SAE 2HP-D Identication Record .................................................................................................................................. iii
SAFETY PRECAUTIONS ..............................................................................................................................................iv
INTRODUCTION ..............................................................................................................................................................1
Getting to know your amplier .........................................................................................................................................1
Burn-In/Break-In Time......................................................................................................................................................1
Reference Manual Conventions.......................................................................................................................................1
IMPORTANT NOTICE......................................................................................................................................................1
Front Panel Layout...........................................................................................................................................................2
Virtual VU/Spectrum Display Meters................................................................................................................................3
Rear Panel Layout ...........................................................................................................................................................4
OPERATION ......................................................................................................................................................................5
Connecting the 2HP-D .....................................................................................................................................................5
Setup and Operation........................................................................................................................................................5
Remote Triggers ..............................................................................................................................................................5
Appendix A Troubleshooting Guide..................................................................................................................................6
Appendix B Specications ...............................................................................................................................................7
Warranty...........................................................................................................................................................................8
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INTRODUCTION
Getting to know your SAE 2HP-D
This SAE 2HP-D amplier has been put through a rigorous and unique testing procedure that ensures that it will last for
many years with minimal service requirements. This procedure includes the following:
• All assembled circuit boards are given a thorough visual inspection and are then tested in a bench-reference amplier.
•The tested, assembled circuit boards are then installed in a new 2HP-D and the whole unit is tested for every function
and parameter.
•The unit is put on a burn-in torture rack to test for any possible component failures.
• The amplier then undergoes a critical listening and functional test.
•The unit has all remaining chassis components installed and then undergoes a complete visual inspection, which
assures that all SAE ampliers meet visual specications.
Burn-In/Break-In Time
This unit has a break in period of about 1 week during which continuous improvement in sound quality will be observed. It is
recommended that music be played continuously through the unit during this time to expedite the break in period.
Reference Manual Conventions
For clarity purposes, references to buttons and LED’s will be shown in bold capital letters.
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IMPORTANT NOTICE
I. It is imperative that the SAE 2HP-D be connected to a ground via its three wire AC power cord. It is important that the
AC power outlet, which the amplier is plugged into, is actually grounded. Failure to do so will severely compromise the
performance, reliability and safety of use of the SAE 2HP-D.
II. Ventilation is an important issue when placing the SAE 2HP-D in a system. If the amplier is intended for passive (convection)
cooling, please make certain that it is placed in a well-ventilated area or rack unit. If the amplier will operated with fan
cooling, please allow space at the rear for heat to be discharged and cool air must be allowed to enter the amplier.
III. Please take note that powerline conditioners are not generally recommended for use with the SAE 2HP-D. If it is your
intention is to plug the 2HP-D into a line conditioner, check with your dealer to make certain that the particular conditioner
that is intended for use DOES NOT DEFEAT THE AC GROUND on its AC outlets and that it is capable of 20A operation.
Otherwise, the amplier’s power output may be compromised.
IV. DO NOT remove any cover panels from the amplier as there are no user serviceable components inside. Refer servicing
and updating to qualied service personnel only.
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FRONT PANEL LAYOUT
Figure 2 - Front Panel Layout
1. ILLUMINATED LOGO. Illuminates when the amplier exits the STANDBY Mode.
2. STANDBY SWITCH. After the rear panel MAIN POWER switch(es) are turned on, touch the front panel button to exit
the standby mode and enter the operational mode. Press again to return to STANDBY.
3. METER ON/OFF SWITCH. Turns the virtual VU Meter/Spectrum Display on and off
4. METER DISPLAY SWITCH. Selects the VU Meter or the Frequency Spectrum Display
5. VIRTUAL VU METER/FREQUENCY SPECTRUM DISPLAY
1
22
5
1
33 44
5
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