Xantech PA1235 specs

•CAUTION: The output voltage of some adapters, such as the 781RG, drops off too slowly to provide a quick turnoff for the PA1235. Therefore, when using any adapter (12 VDC max), always connect the included 220 Ohm 1 Watt resistor in shunt with the REMOTE MASTER ON /OFF CONTROL terminals as shown in Fig.9. Failure to do so may result in blowing of the power line fuse (item #10, Fig.3)

NOTE: Do not use the 220 Ohm resistor when connecting to the CO terminals of a ZPR68!

This must be the positive (+) lead (white striped lead on Xantech Power Supply Adapters).

COMMON BUS

Preamplifier, Control Center, etc.

LEFT	LOCAL		RIGHT
		2
	STEREO
MODE		MONO
	BRIDGED
CI	GROUND	STATUS	IR IN
+	BRIDGED --
SPEAKER
LEFT		RIGHT
+	--	--	+

		LEFT	LOCAL		RIGHT
				3
CAUTION			STEREO
RISK OF ELECTRIC		MODE		MONO
SHOCK. DO NOT OPEN			BRIDGED
REMOTE MASTER			GROUND	STATAUS	IR IN
ON/OFF CONTROL		CI	GROUND	STATAUS	IR IN
(+)
--	+	+	BRIDGED --
--	+	SPEAKER
5-30 VOLTS DC		SPEAKER
5-30 VOLTS DC		LEFT		RIGHT
		LEFT		RIGHT
		+	--	--	+

5V to 12 VDC Adapter,

such as a Xantech 781RG,

plugged into a Switched AC Outlet on Preamplifier

Fig. 9 Using the REMOTE MASTER ON/OFF

CAUTION:

You must use the included

220 Ω resistor. See

CAUTION note above.

PA1235

(portion of rear panel)

CONTROL Terminals

A Multi-Zone Power Managed System, using a ZPR68, a GATEKEEP-IR™and a PA1235

Fig. 11 shows a PA1235 in a typical multi-room system with a Xantech ZPR68-10 six-zone preamp and a GATEKEEP-IR. The PA1235 has been designed specifically to work well with both Zone and All-Zone ON/ OFF management as rendered by the ZPR68-10.

In this example, the STATUS & GND output (0 to +12 VDC) of each zone of the ZPR68-10 is connected, via a 2-conductor lead, to the CI & GROUND of each amplifier pair on the PA1235.

•This causes the ON/OFF condition of any given ZPR68-10 Zone to turn it's corresponding amplifier pair ON/OFF (Standby ON/OFF).

Also, the common CO (control output, 0 to +12 VDC ) from the ZPR68-10 is used to drive the REMOTE MASTER ON/OFF CONTROL terminals of the PA1235.

CAUTION: When making this connection, do not use the included 220 Ohm resistor! Refer also to CAUTION notes, Fig. 9.

•When any one of the zones is turned ON, the common CO goes high (+12V), turning on power to the entire PA1235.

•Similarly, when the last zone is turned OFF, the CO drops to 0 V, turning the PA1235 totally OFF.

NOTE: No IR control of the PA1235 is used in the system shown in Fig. 11. All volume, mute, etc. functions are handled by IR control of the ZPR68-10. The PA1235 amplifier pairs are all set to the default volume level setting by pressing the LEVEL (System) RESET button (refer to item #9, Fig. 3).

AC Power Management of the entire system as shown in Fig. 11 is accomplished, therefore, as follows:

a)The PA1235 is controlled via the STATUS and CO functions as noted above.

b)The Source Components are controlled via the GATEKEEP-IR™sensor system and the IR macros in the Smart Pads and, where used, IR macros in Learning Remotes (such as the Xantech URC types).

	® 
PA1235		13
PA1235		13

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.