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High-Q low insertion loss, frequency discriminatory filters designed for 16-ohm systems with constant-K configuration.
Table detailing crossover frequency, impedance, insertion loss, attenuation, phase rotation, dimensions, and shipping weight for various models.
Details on Model X425, X6, and X8 crossover networks, including their intended use with specific E-V drivers and systems.
Application of Model X825 with T10A driver and 8HD horn; Model X36 with T35/T35B Super-Sonax VHF drivers.
Application of Model X336 in Georgian 4-way system; X2635 in Patrician and Residence Entertainment Center.
Illustrations of single and cascaded network wiring diagrams for Electro-Voice crossover networks.
Notes on using 16-ohm designed crossovers in 8-ohm systems and implications of unequal driver impedances.
High-Q low insertion loss, frequency discriminatory filters designed for 16-ohm systems with constant-K configuration.
Table detailing crossover frequency, impedance, insertion loss, attenuation, phase rotation, dimensions, and shipping weight for various models.
Details on Model X425, X6, and X8 crossover networks, including their intended use with specific E-V drivers and systems.
Application of Model X825 with T10A driver and 8HD horn; Model X36 with T35/T35B Super-Sonax VHF drivers.
Application of Model X336 in Georgian 4-way system; X2635 in Patrician and Residence Entertainment Center.
Illustrations of single and cascaded network wiring diagrams for Electro-Voice crossover networks.
Notes on using 16-ohm designed crossovers in 8-ohm systems and implications of unequal driver impedances.
The Electro-Voice Crossover Networks, encompassing models X6, X8, X425, X825, X36, X336, and X2635, are high-Q, low insertion loss, frequency discriminatory filters designed for use in audio systems with a characteristic impedance of 16 ohms. These networks are built on a constant-K configuration, a design choice that ensures identical values of components can be used in both series and shunt arms. This uniformity is crucial for maintaining identical phase rotation and transient response on either side of the crossover frequency, contributing to a coherent and natural sound reproduction.
The designation of each E-V crossover network is based on its 3 dB down point in the network frequency response curve. For instance, the high-pass section of the X8 crossover is 3 dB down at 800 cps, as is its low-pass section. This precise frequency demarcation is fundamental to their operation. Attenuation in these networks is carefully controlled, occurring at a rate of 12 dB per octave for 1/2-section filters and 6 dB per octave for 1/4-section networks. This varying attenuation rate allows for different slopes in the frequency response, enabling fine-tuning of the audio system's characteristics.
A key technical feature of these crossovers is the use of high-Q air-core inductors. This component choice is vital because it ensures that the filter characteristics remain constant, even when there are changes in the average values of the program level. This stability is critical for consistent audio performance across a range of listening volumes and music dynamics. The networks are robustly designed to safely handle up to 100 RMS watts. Given that average program levels in home listening rarely exceed 2 watts, this provides a substantial safety margin, indicating the durability and reliability of these units for typical domestic use.
In terms of physical construction and maintenance, all Electro-Voice crossover networks are housed in drawn steel cans. The finish is gray, providing a discreet and professional appearance. The internal component parts are potted in a thermoplastic asphalt. This potting process offers protection against environmental factors such as moisture and vibration, enhancing the longevity and reliability of the networks. While specific maintenance instructions are not detailed, the robust construction and potted components suggest a low-maintenance design.
Let's delve into the specific models and their applications:
Model X425: This crossover network is designed for use with most E-V woofers or coaxial drivers in an infinite baffle setup. Its primary function is to cross over to the mid-range from the bass driver at a lower frequency, optimizing the transition between bass and mid-range for a smoother sound.
Model X6: The X6 crossover network is specifically designed for use with the Electro-Voice T25A or T10A driver units and the 6HD Hoodwin diffraction horn. This combination is tailored to achieve optimal performance with these specific components.
Model X8: This network is designed for use with the Electro-Voice T25A or T10A driver units and the 8HD Hoodwin diffraction horn. The X8 is a versatile component, utilized in several high-end E-V systems, including the Aristocrat II and III, Regency II and III, and Empire II and III systems.
Model X825: The X825 crossover network is intended for use with the Electro-Voice T10A driver unit and the 8HD Hoodwin diffraction horn. It is a 1/4-section network and finds application in medium-efficiency systems that employ E-V 12BW, SP12B, and T10A drivers, such as the Aristocrat I and IA, Regency I and IA, and Empire I and IA.
Model X36: This crossover network is designed for use with the Electro-Voice T35 and T35B Super-Sonax VHF driver units. It is crucial for integrating these high-frequency drivers into a broader audio system.
Model X336: The X336 crossover network is a complex component designed for the Electro-Voice Georgian 4-way loudspeaker system, Model 105. This network manages multiple frequency bands:
Model X2635: This crossover network is designed for use in the Electro-Voice Patrician and Residence Entertainment Center systems. It features a 1/4-section constant-K 200 cps network combined with 1/2-section networks for higher frequencies. Due to the inherent high-frequency cutoff of the low-frequency horns used in these systems, rapid attenuation is not required in the low-frequency crossover.
The manual provides typical application diagrams, illustrating how these networks are integrated into audio systems. Figure 1 shows a single crossover used to separate frequencies for a T35 or T35B Super-Sonax VHF driver and a low-frequency or coaxial low-range speaker. This is a common setup for two-way systems.
Figure 2 demonstrates a cascaded application, where two crossover networks are employed. The primary goal of this arrangement is to ensure a precise pass band frequency response for the treble mid-range driver. The order in which the crossovers are cascaded is not critical, as the objective is to shape the overall frequency response.
While these crossovers are primarily designed for 16-ohm systems, they can be adapted for other impedance configurations. If a 16-ohm unit is used in a system where both input and output impedances are 8 ohms, there will be no significant shift in crossover frequency, though the insertion loss will be greater. This indicates a degree of flexibility in their application.
However, when dealing with reproducers of unequal impedances, it is recommended to connect the crossover to a 16-ohm source. For example, if an 8-ohm woofer is paired with a 16-ohm tweeter, bass reproduction will be favored. Conversely, if an 8-ohm tweeter is used with a 16-ohm woofer, treble reproduction will be relatively louder. This highlights the importance of impedance matching for balanced sound output.
Complete instructions and information regarding the assembly of E-V drivers and systems are provided with individual driver units and packed with each E-V enclosure, ensuring users have all necessary details for proper installation and setup. This comprehensive approach underscores Electro-Voice's commitment to user support and optimal system performance.
General| Brand | Electro-Voice |
|---|---|
| Model | X6 |
| Category | Crossover |
| Language | English |
