Trouble Shooting

If you encounter a problem, please review the items below. Be sure, in addition, to check other system components, such as preamplifiers, CD players, speakers, speaker wiring, etc., that may be at fault.

1.Front Panel LEDs do not light – no sound.

•Check line cord for good contact in a live AC outlet.

•If the REMOTE MASTER ON/OFF CONTROL terminals (item #12, Fig. 3) are used, be sure applied voltage is between +5 V and +30 VDC with proper polarity. Refer to Fig. 9.

2.Low level or no sound when operated without IR control.

•Level was previously set by IR to a low level or muted. Simply press LEVEL (System) RESET button as instructed in item 9, Fig.3

3.Sound cuts in and out every 3 to 5 seconds.

•Speaker load impedance is less than 4-Ohms for Stereo mode or less than 8-Ohms for Bridged mode. Make changes in matching auto-formers and/or speakers as necessary to obtain higher impedance.

4.PA1235 does not turn OFF when REMOTE input voltage goes to 0 Volts.

•Be sure that the POWER switch (item 3, Fig. 2) is set to the MANUAL OFF (Out) position.

5.PA1235 becomes very warm, shuts OFF, but does not come back ON automatically.

•Set POWER switch (item 3, Fig. 2) to MANUAL OFF (OUT) position for 15 seconds, then back ON. If the REMOTE MASTER ON/OFF CONTROL terminals are used, unplug for 15 seconds, then re- plug.

6.Unit responds intermittently or not at all to IR commands.

•Look for IR noise at the IR receiver locations in the various rooms. Also, long lengths of shielded wire from keypads or IR receivers can cause poor IR executions. Refer to the troubleshooting sections of the IR receiver and keypad manuals you are using.

7.The PA1235 blew its fuse (item #10, Fig. 3) as power was turned OFF using an adapter driving the REMOTE MASTER ON/OFF CONTROL terminals.

•The supplied 220 Ohm resistor may not have been connected in shunt with the REMOTE MASTER ON/OFF CONTROL terminals. Be sure the resistor is connected and that the leads are making secure contact within the screw terminals of the connector. Refer to CAUTION notes, Fig. 9.

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PA1235		15
PA1235		15

Amplifiers & Preamplifiers

PA1235 specifications

The Xantech PA1235 is a cutting-edge multi-zone power amplifier designed for both residential and commercial audio applications. Renowned for its impressive performance and reliability, the PA1235 offers robust amplification for distributed audio systems, fulfilling various audio needs in different environments.

One of the main features of the PA1235 is its power handling capabilities. It delivers 35 watts per channel across six channels, ensuring that every zone in a multi-room setup receives adequate power for optimal sound quality. This makes it suitable for powering a variety of speaker types, from in-ceiling speakers to outdoor sound systems. Its architecture allows flexibility in system configuration, making it easy to distribute audio throughout a home or business.

The PA1235 employs advanced Class D amplification technology, which maximizes efficiency while reducing power consumption and heat generation. This not only makes the amplifier more environmentally friendly but also enhances longevity and reliability. The lightweight design of Class D amplifiers allows for easier installation, especially in complex multi-zone environments.

Another characteristic of the PA1235 is its multi-zone functionality. Users can easily assign audio sources to different zones, allowing for personalized control of audio in various spaces. This feature is particularly valuable in commercial settings, where different areas may require distinct audio content or volume levels. It offers seamless integration with existing automation systems, thanks to its compatibility with various control protocols, facilitating a user-friendly experience.

The amplifier also features adjustable gain controls for each channel, allowing users to fine-tune the audio output for different speaker types or acoustic environments. Additionally, the built-in protection circuitry ensures that both the amplifier and attached speakers are safeguarded from overload or short-circuit situations, thereby enhancing overall system durability.

With its combination of power, efficiency, and versatility, the Xantech PA1235 is an ideal choice for integrators and audiophiles alike. Whether used in home theaters, restaurant sound systems, or corporate audio solutions, it provides high-quality audio performance that meets the demands of modern audio requirements, making it a prominent player in the audio amplification market.