(EC-302 Not Available in USA)

Electronic Crossovers With Unsurpassed Sonic Performance And Flexibility

The EC-204 and EC-302 are extremely versatile electronic crossovers that ensure the highest level of performance in a wide variety of multi-amp system configurations. Both feature state-of-the-art circuitry and are constructed of the finest materials and components. Examples of Nakamichi's attention to detail include fully balanced internal circuit configurations that permit phase inversion without additional stages. All level controls precede the active filters so that output impedance is unaffected by their settings. Bypass outputs provide unaltered throughput of the input signals, ensuring the simplest, highest quality signal path when the EC-204 and EC-302 are combined in more sophisticated multi-way systems. The bypass provision also makes it possible to adjust one part of the system without affecting subsequent parts of the chain.

Both units incorporate DC-DC converter bipolar power supplies, which make it possible to use the most advanced, low-distortion, wide-dynamic-range circuitry. Both also feature floating ground and Nakamichi's Isolated Ground topology to maintain high signal purity and virtually eliminate the effects of external interference. 18dB/octave filters are used to minimize multi-source interference across driver ranges. And low-impedance outputs increase resistance to inductive noise pickup.

The EC-204 is a 2-way, 4-channel network designed specifically for multi-amp systems using the SP-1010 or SP-80 subwoofer. It provides front and rear left/right inputs; front and rear left/right outputs; plus constant bass outputs. The front and rear bass-to-mid/high crossover frequencies can be independently adjusted in 10Hz increments from 10Hz to 310Hz.

The EC-302 is a 3-way, 2-channel design that can be used in two types of multi-amp systems: woofer/midrange/tweeter or subwoofer/bass-midrange/tweeter. In the latter case two EC-302 units can be used to allow the head unit's front/rear fader to control the bass-midrange drivers and tweeters while the subwoofer operates in constant bass mode. A multiplier switch permits the low-mid crossover frequency to be selected from the 10Hz to 310Hz range in 10Hz increments or the 100Hz to 3.1kHz range in 100Hz increments. The mid-high crossover frequency can be adjusted from 500Hz to 15.5 kHz in 500Hz increments.

The EC-200 divides the musical spectrum into two parts – a low-frequency region that contains the deepest musical fundamentals and forms the underpinning to give music "punch", and an upper-bass/midrange/treble region that creates the stereo imagery, presence and brilliance. Each is directed through separate power amplifiers and loudspeakers to create a system of unusual flexibility.

The low-frequency speakers – the subwoofers – can be placed where they produce smoothest bass response, the midrange/treble drivers where they produce best imagery and the most natural high-end response. The EC-200 allows you to adjust the relative levels of the two regions to compensate for differences in subwoofer/main-speaker efficiencies and for differences in acoustic absorption. The crossover point of each section is independently adjustable in 5 steps from 50Hz to 220Hz. By "staggering" crossover points, you can correct standing wave conditions so that bass is neither boomy nor weak but incredibly natural. Steep 18dB/octave slopes ensure a sharp division between bands for minimum coloration.

NAKAMICHI QUALITY
Nakamichi Mobile-Sound Components are in a class by themselves – designed to uncompromising standards to bring home sound to the road! The EC-200's DC-to-DC converter generates balanced high-voltage power from the ordinary car battery. With positive and negative supplies, high-performance direct-coupled circuits can be used for super dynamic range and minimum distortion. The DC-to-DC converter also isolates circuit ground from battery ground for minimum noise. The results are phenomenal – distortion under 0.003%, signal-to-noise ratio better than 105dB – performance that not only matches but exceeds that of most home-audio systems!

COMPACT FOR EASY INSTALLATION
The EC-200 is so compact it can be installed almost anywhere. Despite its exceptional performance, it draws negligible battery power. A complete mounting kit is provided with the unit.