T5 Crossover

The crossover implemented on the T5 system is one of kind that recalibrates a speaker components vehicle integration and optimization. By merging technologies of today's advanced semi-conductors and micro-controllers, Rockford has bridged the gap between conventional passive crossover networks and the many advantages of active filter networks. Typically a crossover is designed to align the acoustic output and phase relationship of separate components to yield an overall smooth balanced system response. With conventional passive crossovers this acoustic alignment can never be truly assured as each component is mounted in a different positions in a myriad of vehicles. This is due to the fixed component values used in these conventional networks. The T5 crossover utilizes combinations of multiple discreet passive components that that is adjustable by the installer for optimal "tuning" of the system into the car.

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Air-Core Inductors

Exclusively used throughout the crossover to eliminate possible saturation and dynamically induced non-linear distortion. Low insertion loss round wire air core inductors are used in the high pass section of the crossover yielding the maximum fidelity possible out of the connected high frequency driver (tweeter).


Mil-Spec Capacitors

Only the finest Metallized Film Polypropylene Capacitors are used. Tolerance of 0.1% is used throughout to insure "matched" type performance with every unit produced. These audiophile capacitors maintain their properties well beyond the power rating of the system to insure performance in any dynamic condition.

Power Film Resistors

True Non-Inductive High Power Resistors

Power film resistors are exclusively used throughout the crossover network and are inherently 100% non-inductive yielding consistent performance regardless of power level or frequency spectrum. These unique resistors are housed in a TO-220 style package that is designed to be directly attached to a heat sink similar to Power IC's. These resistors are directly mounted to the crossover housing's copper chassis. Unlike conventional resistors, heat sinking in this manner allows for a very stable resistance rise that helps maintain performance regardless of power applied and listening levels. Tolerances are maintained to 0.1% again insuring "matched" performance


Remote Tuning Module

This tuning module is a detachable tethered board that allows for remote control of the critical adjustments in the system to ideally match it to each vehicle. By providing adjustment of frequency, slope, phase, and level selections for each channel on the crossover, the listener can quickly tune the system directly from the listening position (Drivers seat). This capability is achieved through the use of (2) separate embedded micro-controller IC's within the passive network. The tethering capability allows for permanent remote mounting in the vehicle's dashboard if desired.


Foil Wound Multi-Tap Inductors

The critical path for the inductor is seen when used in series with the speaker connected. In the T5 system this speaker is the mid-range. It is here where the DCR of the inductor directly relates to efficiency and output capability of the speaker. Essentially an inductor not only acts as a low pass filter but also as a resistor. If the resistance is high, than the power getting to the speaker is reduced significantly. 99.9% of today's crossover use conventional round wire inductors in this critical path and typically have a typical diameter equivalent to 16-20 AWG. The T5 crossover utilizes a unique custom made multi-tap foil wound inductor with an equivalent wire gauge to 10AWG. This minimizes the resistance and losses to the speaker insuring that maximum efficiency and dynamic range is achieved.

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