Emotiva XPA-1 manual Series and Parallel Speaker Connections

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Series and Parallel Speaker Connections

Whenever connecting more than one speaker per channel to an amplifier (regardless of the brand), you must consider the way in which the amplifier will be impacted by adding the additional speaker(s). Additionally, speakers with dual voice coils also apply to this consideration. Two voice coils in a single speaker also cause different reactions from an amplifier depending on the way in which they connect to the amplifier.

The connection of more than one speaker per channel will tend to degrade the speaker’s frequency response and may make the amplifier run hot. For the best sonic results, use one speaker per amplifier channel. If you must connect more than one speaker per channel, there are two methods in which to do so: Series or Parallel.

Series

A series connection is established when voice coils are connected in a string – end to end – so there’s only one way for audio signals to flow “in” and only one way for audio signals to flow “out”. For example, if you were to series-connect two speakers to the front right channel of the amplifier:

•The positive output terminal of the right channel connects to the positive input post of the first speaker.

•The negative input post of the first speaker connects to the positive input post of the second speaker.

•The negative input post of the second speaker connects to the negative output terminal of the right channel.

An example of a SERIES

connection between two

speakers

The total impedance of speakers in series is found by adding their impedances together. For example, two four ohm speakers in series is an eight ohm load. Series connections are easier on the amplifier than parallel connections as the total impedance is higher than driving a single speaker.

Parallel

A parallel circuit is established when voice coils are connected in a way that there are multiple paths for audio signals to flow “in” and multiple paths for audio signals to flow “out”. When speakers are connected in parallel, the total resistance at the amplifier is proportionally divided based on the value of each individual voice coil resistance. The term “divided” simply means all of the values together in parallel are a SMALLER value than each all by itself. For example, if you were to parallel connect two speakers to the front right channel of the amplifier:

•The positive output terminal of the right channel connects to the positive input post of the first speaker and to the positive post of the second speaker.

An example of a PARALLEL

connection between two

speakers

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Contents XPA-1 Table of Contents XPA-1 Technical Specifications Limited Warranty Safety Precautions Toll Free 877 EMO-TECH NEC National Electrical Code Standards Antenna Grounding Outside the HouseThank You for your XPA-1 Purchase Recording the Serial Number Unpacking the XPA-1Inventory Emotiva XPA-1 Reference Differential Amplifier Front Panel LayoutRear Panel Layout Remote Turn On JackPhysical Placement Installation and ConnectionsAC Power Considerations Connection Tips for Superior Sound Input Connection ConsiderationsOutput Connection Considerations Connection Diagrams 12V Trigger ConnectionsParallel Series and Parallel Speaker ConnectionsSeries Technical Note about Multiple Speaker Connections Troubleshooting Guide No Sound from one or more speakers connected to the XPA-1Turn-on and turn-off thumps Hum Noises in the SpeakersOne or more RED lights on the Front Panel are Blinking Problems with the whole A/V SystemOther Probable Causes of Noise XPA-1 Technical Specifications Limited Warranty Emotiva Audio Corp Emotiva DisclosureEmotiva Audio Corp

XPA-1 specifications

The Emotiva XPA-1 is a powerful and sophisticated monoblock amplifier designed for audiophiles who demand high performance and exceptional sound quality. With a power output of 1000 watts per channel into 8 ohms, and doubling the power to 2000 watts into 4 ohms, the XPA-1 is engineered to drive even the most demanding speakers with ease.

One of the key features of the XPA-1 is its fully balanced design. This configuration minimizes distortion and improves dynamic range by reducing the noise floor, allowing for a cleaner and more detailed sound. The amplifier employs a Class A/B topology, ensuring that sound quality remains pristine while delivering the high power needed for demanding audio applications. This hybrid design combines the efficiency of Class B operation with the low distortion characteristics of Class A amplification.

Thermal management is another critical aspect of the XPA-1. The amplifier is equipped with a robust heat sink and thermal protection circuitry, ensuring that it operates safely and efficiently even during extended listening sessions. The design allows for quiet operation, minimizing the impact of fan noise, a common concern with high-power amplifiers.

The XPA-1 features high-quality components, including custom-wound toroidal transformers, which provide a stable power supply. This contributes to the amplifier's impressive transient response and dynamic capability, allowing it to handle complex musical passages and peak demands effortlessly. Additionally, the use of high-grade capacitors further enhances performance, ensuring that audio playback is not only powerful but also accurate and lifelike.

Another notable feature is the XPA-1's RCA and XLR inputs, providing versatile connectivity options for various audio sources. This enhanced flexibility allows users to integrate the amplifier seamlessly into their existing audio systems, whether for home theater setups or high-end stereo configurations.

Emotiva's attention to detail extends to the build quality of the XPA-1. With a sleek and sturdy chassis, the amplifier is designed to endure the rigors of everyday use while complementing any high-end audio environment. The front panel features a unified design with neatly arranged controls, making it user-friendly and aesthetically appealing.

In summary, the Emotiva XPA-1 is a high-performance monoblock amplifier that combines advanced technology, exceptional power output, and robust build quality. Its fully balanced design, powerful Class A/B amplification, and high-quality components make it an attractive option for audiophiles looking to elevate their sound systems to new heights. Whether for music or home theater applications, the XPA-1 delivers an uncompromising listening experience that truly captivates.
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