James Loudspeakers A2.1 Manual del usuario - Página 3

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Features and Controls

1. Rack Ears - For standard 19" rack mounting of the amplifier - these can be removed if

needed for shelf mounting

2. IR Window for Receiving Remote Control Signals – Do not block. Will be disabled if

the rear IR input jack is used.

3. Power LED - Indicates the power state input source: no color – powered off, red - stand

by mode, blue – RCA inputs, green – coax input, purple – digital input, yellow – signal

muted. In every mode except standby (red), after 5 minutes of inactivity the LED will dim

to be less obtrusive.

4. Master Volume - Controls the overall volume of the sats and subs together.

5. Sub Volume - Used to set the relative level of the subwoofer volume to the sat volumes.

There is about a +/- 12dB range relative to the sat level. This allows the bass level to be

matched with various sats and will vary based on the efficiency of the sats and subs used.

There is no standard setting – what sounds best.

6. Sub Crossover - Set the crossover point for the subwoofer between 40Hz and 150Hz.

80Hz is marked as a reference.

7. Sat Crossover - Set the crossover point for the sats between 40Hz and 150Hz.

80Hz is marked as a reference.

8. 45Hz Boost Switch - Allows the addition of +4dB of bass boost for the subwoofer

9. Phase Switch - Switches the polarity of the subwoofer to allow better matching to the

sats in certain situations - the setting depends on the specific installation and James

recommends you start in the 0 degree setting.

10. Right Sat Speaker Connection - Connect the red terminal to the positive on the right

sat speaker.

11. Left Sat Speaker Connection - Connect the red terminal to the positive on the left sat

speaker.

12. Subwoofer Speaker Connection - Connect the red terminal to the positive on the

subwoofer. *Output bridged - No common ground.

13. Optical Digital Audio Input (Purple LED) - S/PDIF Connector

14. Coaxial Digital Audio Input (Green LED) - RCA Connector

15. Left/Right RCA inputs (Blue LED) - A 1/8 mini phone plug to RCA cable is included for

cell phone and tablet sources.

16. Source Selector Button - Pressing this button cycles through the 3 inputs. The front

LED color will indicate the source selected. Offers the same function as the remote control

17. Input Sensitivity Switch - Use the 0.2V setting for phones, tablets, music players

and other low output sources. Use 0.775V for normal audio source such as DVD players,

TVs and control systems.

18. High Pass Filter Switch - Selects a low frequency cut off for the subwoofer – used

to prevent damage to smaller sub woofers. Normally, 30Hz is recommended unless the

subwoofer specs indicate otherwise.

19. IR Input for IR Cable – A 10 ft (3 m) remote IR receiver is supplied. When installed,

this disables the front IR sensor. This allows the amplifier to be hidden and the IR

receiver placed discretely where it can receive remote control signals.

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20. 12V Trigger Input - Plugging in a 12V plug will automatically switch the amplifier to

12V on/off trigger mode.

21. USB B Connector – For factory use only.

22. USB A Connector Provides 5V Power Only – For future peripherals.

23. Power Switch - Turns the amplifier on and off. In the "On" position, the amplifier will can

be put into standby via the 12V trigger, remote or though the auto sleep function.

Auto sleep – if there is no input signal present for 15 minutes the amp will go into

standby.

24. 120V/240V Selector - Make sure this is correctly set for your AC line voltage.

25. IEC Power Connection.

26. Fuse Holder/Spare Fuse Holder - Fuse Ratings: 120V - T5.0 / 240V - T2.5

27. Optional Self-Adhesive Feet on Bottom These can be left off for rack mounting or

attached for shelf use.

SUPPLIED ACCESSORIES:

28. Remote control.

29. Self adhesive rubber feet.

30. 6ft (2m) RCA to mini phone

plug audio cable.

31. 10ft (3m) IR receiver with adhesive.

32. IEC power cable.

NOTES

Remote Control – be sure to pull and remove the clear plastic tab

to allow the battery to turn on the remote.

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