Choose Output Wire and Connectors, Distance

Commercial Audio Series Mixer-Ampliﬁers

2 Setup

2.4 Choose Output Wire and Connectors

Ampliﬁer Output Connections: Slip the cable lugs under the output screw terminals and tighten (Figure 2.6). Slide the supplied non-touch cover over the output connections from top to bottom to cover them.

Crown recommends using pre-built or professionally wired, high-qual- ity, two-conductor, heavy gauge speaker wire and connectors. You may use crimp-on spade lugs for your output connectors. To prevent the pos- sibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable connectors. Cover the output connections with the supplied clear non-touch cover by sliding the cover on.

Using the guidelines below, select the appropriate size of wire based on the distance from ampliﬁer to speaker. The wire sizes apply to the 8-ohm tap.

Distance	Wire Size
up to 25 ft.	16	AWG
26-40 ft.	14	AWG
41-60 ft.	12	AWG
61-100 ft.	10	AWG
101-150 ft.	8	AWG
151-250 ft.	6	AWG

NOTE: Custom wiring should only be performed by qualiﬁed personnel. Class 2 wiring is required.

CAUTION: Never use shielded cable for output power wiring.

Use 2-conductor shielded cable and a 3-pin Phoenix-type connector for Preamp Line Output (Figure 2.7).

Music-On-Hold Connections

100V

70V

COM

Figure 2.6 Ampliﬁer Output Connections

Figure 2.7 Connections to the

Preamp Output Connector

TELEPHONE

(MOH)

8 600

If you have an external music source connected to the 135MA or 160MA, you can play its music over a phone line while the caller is on hold. Use the connection shown in Figure 2.8 (either 8 ohms or 600 ohms) to connect the mixer-amp to the Music-On-Hold input on your telephone system interface/PBX.

If your phone system needs to be electrically isolated from the 135MA or 160MA, you can order an accessory isolation transformer from your Crown dealer, part no. IST. It connects either to the MOH output or to Input 1.

page 10

To telephone system interface/PBX input

Figure 2.8 Connections to the Telephone (MOH) Connector

Operation Manual

160MA specifications

Crown Audio, a leading manufacturer of professional audio equipment, has made a name for itself with its innovative amplifier designs. Among their extensive lineup, the Crown 160MA and 135MA models stand out as highly regarded solutions for various applications, particularly in commercial audio systems, installations, and even mobile setups.

The Crown 160MA is a 160-watt, 2-channel amplifier that delivers robust performance while ensuring outstanding sound quality. Designed with versatility in mind, it is well-suited for powering speakers in both small venues and larger installations where high-quality audio is required. The amplifier features a built-in mixer with three inputs, allowing users to easily connect multiple audio sources. This feature is particularly beneficial in settings such as community centers, conference rooms, and educational institutions.

On the other hand, the Crown 135MA is a slightly smaller yet equally capable 135-watt, 2-channel amplifier, designed for applications where space may be limited. It retains many of the key features found in the 160MA, offering reliable performance while providing the necessary power for smaller speaker systems. The integrated mixer also accommodates various audio inputs, simplifying connections in various environments.

Both models incorporate advanced technologies that enhance performance and reliability. They utilize Class D amplification, which not only reduces energy consumption but also minimizes heat generation, allowing for a more compact design without sacrificing output power. This makes them ideal for permanent installations where space is a constraint. Additionally, the amplifiers come equipped with comprehensive protection circuitry, safeguarding against potential overloads and thermal issues.

The Crown 160MA and 135MA are also designed with user-friendly controls and indicators, making them accessible for both seasoned audio professionals and newcomers. Their rugged built quality ensures durability in diverse environments, whether being used in commercial spaces, houses of worship, or temporary events.

In summary, the Crown Audio 160MA and 135MA offer a compelling combination of power, sound quality, and versatility. Their innovative features, such as built-in mixing capabilities, efficient Class D technology, and robust protective measures, make them excellent choices for anyone seeking reliable amplification solutions. Whether for small to medium-sized installations or mobile setups, these amplifiers are engineered to deliver exceptional audio performance for any application.