Connection and Installation

Output Connections

Each channel of the PA-30 will drive a minimum load impedance of 8 ohms. Connecting a load of lower impedance will result in current limiting and may trigger the Protection circuits to shut down the amplifier.

Figure 7 shows a normal stereo-mode connection of two individual speakers to the PA-30 outputs. When making loudspeaker connections, always be sure to maintain correct polarity; if you wire the speakers out of phase with one another, you will get acoustical phase cancellations.

There are two basic methods for connecting multiple speakers to a single amplifier output: series connection and parallel connection. Loudspeakers connected in series present a higher net impedance than any single unit alone. Parallel connection, by contrast, lowers the net load impedance. Sometimes, the two methods are

combined to obtain an optimum load impedance. Figure 8 shows what happens to the net load impedance when multiple loudspeakers are connected in various ways. (In all cases, it is assumed that all speakers in a given system have the same impedance.)

Generally, only parallel connection is used in professional audio, for two fundamental reasons. First, if one of the speakers in a parallel system fails, the others will still function. (Remember those old Christmas lights that all went out the minute one bulb failed? They were connected in series.) Second, parallel connection results in a lower net impedance. The closer the load impedance gets to the allowable minimum for the amplifier, the more efficiently is the amplifier's power capability used, since the lower load impedance draws more current from the output stage.

120V

Figure 7. Typical Stereo Output Connection

Each Unit

Two In Series

Three In Series

Four In Series

4 OHMS

8 OHMS

12 OHMS

16 OHMS

 

 

 

 

 

 

 

 

8 OHMS

16 OHMS

24 OHMS

32 OHMS

 

 

 

 

 

 

 

 

16 OHMS

32 OHMS

48 OHMS

64 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Each Unit

Two In Parallel

 

Three In Parallel

 

Four In Parallel

 

Four In Series/Parallel

4 OHMS

 

(2 OHMS)

 

(1.33 OHMS)

 

(1 OHM)

 

(4 OHMS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 OHMS

 

(4 OHMS)

 

(2.66 OHMS)

 

(2 OHMS)

 

8 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16 OHMS

 

8 OHMS

 

(5.33 OHMS)

 

(4 OHMS)

 

16 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: Impedances shown in brackets are too low for the amplifier. Do not use three loudspeaker configurations.

Figure 8. Connecting Multiple Loudspeakers

8 TASCAM PA-30

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Tascam PA-30 owner manual Output Connections, Typical Stereo Output Connection
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PA-30 specifications

The Tascam PA-30 is a professional power amplifier designed to meet the demands of demanding audio environments. Known for its high sound quality and robust construction, the PA-30 is an ideal choice for both live sound applications and permanent installations.

One of the standout features of the Tascam PA-30 is its power output. It delivers 30 watts per channel into an 8-ohm load, making it suitable for driving a variety of speakers in moderate-sized venues. Additionally, it can also handle 50 watts per channel into a 4-ohm load, providing the headroom necessary for high-energy performances and dynamic audio playback that requires extra power.

The design of the PA-30 emphasizes durability and reliability. Built with a rugged chassis, the amplifier is capable of withstanding the rigors of touring and frequent use in commercial environments. It also features a fan-less design, which minimizes noise and enhances the listening experience, ensuring that no distracting sounds interfere with the music or spoken word.

For connectivity, the Tascam PA-30 includes balanced XLR inputs, as well as RCA connectors that allow for various audio sources to be connected easily. This flexibility ensures that the amplifier can integrate seamlessly into different audio setups, from small gigs to larger events.

In terms of technology, the PA-30 is designed with advanced thermal protection, ensuring that the unit operates safely even during extended use. This feature prevents overheating, which can lead to unexpected interruptions in performance. Moreover, the amplifier is equipped with short-circuit protection, providing peace of mind and safeguarding connected equipment from potential damage.

The user interface is straightforward and intuitive, featuring rotary knobs for volume control and basic EQ adjustments. This simplicity allows audio engineers and operators to make swift adjustments during live shows without any hassle.

Overall, the Tascam PA-30 stands out for its combination of performance, reliability, and user-friendly design. With its impressive fidelity and robust features, it is an excellent choice for anyone looking to enhance their audio systems, whether in live sound situations or in fixed installations. This amplifier continues to be a trusted option for audio professionals around the world, ensuring quality sound reproduction in a variety of settings.
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