SYSTEM CONFIGURATIONS
The XD700/5 is a very flexible amplifier, well- suited for a multitude of system configurations. In this section, the most likely configurations for a system with a single XD700/5 are explained in detail.
Once you have selected your desired configuration, you can use the amplifier panel drawing on pages 18 & 19 to mark the required switch positions for easy reference.
BI-AMPLIFIED SYSTEMS
Bi-amplified systems are defined as systems in which separate amplifier channels drive low- frequency (LF) and high-frequency (HF) speakers and are separately filtered to send appropriate frequency ranges to each speaker system.
The most common application of bi-amplification in mobile audio is to drive a subwoofer system from one or more amplifiers or channels and component speakers from separate amplifiers or channels.
The XD700/5 can be configured to drive a bi-amplified system by itself.
Bi-Amplified System with one XD700/5
In this configuration, the Subwoofer Channel of the XD700/5 will drive a subwoofer system with low-pass filtering. The Main Channels (1&2, 3&4) will drive component speakers in stereo with high-pass filtering.
Crossover Setup for Bi-Amplified System with one XD700/5:
Once the input sections have been configured appropriately (see page 6), go to the “SUB CH.” control section and select “12dB” or “24dB” (low-pass) on the “LP Filter Mode” switch and an appropriate “Filter Freq.” (80 Hz is a good starting point). The “12dB” setting engages a shallow filter slope that gradually attenuates frequencies above the selected “Filter Freq.” setting. The “24dB” setting engages a sharper filter slope that more aggressively attenuates frequencies above the selected “Filter Freq.” setting. Neither setting is “better”, but in general, the shallower “12dB” setting is more desirable for a subwoofer having to fire from a trunk into the cabin of a sedan or coupe. The sharper “24dB” setting is typically better in a hatchback, SUV or
wagon application. Experiment to find the slope setting that results in the smoothest subwoofer to midbass transition.
Next, turn your attention to the “CH 1 & 2” Controls and select “x1” (high-pass) on the “HP Filter Mode” switch and select an appropriate “Filter Freq.” (again, 80 Hz is a good starting point). The “x1” setting means that the Filter Freq. indicated on the dial is exactly what you are selecting. (In the “x10” mode, the actual Filter Frequency is ten times higher than the indicated value. This setting is generally not used in bi-amplified systems.)
Finally, turn your attention to the “CH 3 & 4”
Controls and select “HP” (high-pass) on the “Filter Mode” switch and select an appropriate “Filter Freq.” (again, 80 Hz is a good starting point).
Tri-Amplified Systems with one XD700/5 The XD700/5’s 3-way crossover capability
allows you to create true, tri-amplified systems by selecting the appropriate settings described below.
In a tri-amplified configuration, the Subwoofer Channel of the XD700/5 will drive a subwoofer system, in mono, with low-pass filtering. Channels 3 & 4 will drive component woofers (or mid-range speakers) in stereo with bandpass filtering (both a high-pass and a low-pass filter applied). Channels 1 & 2 will drive high-frequency speakers (tweeters, typically), in stereo, with high-pass filtering.
To operate a single XD700/5 in Tri-Amplified mode, set the “Input Mode” switch in “2 Ch.” mode, and apply a single set of stereo inputs to the Ch. 1 & 2 Inputs only!
Crossover Setup for Tri-Amplified System with one XD700/5:
First go to the “SUB CH.” control section and select “12dB” or “24dB” (low-pass) on the “LP Filter Mode” switch and an appropriate “Filter Freq.” (80 Hz is a good starting point). The “12dB” setting engages a shallow filter slope that gradually attenuates frequencies above the selected “Filter Freq.” setting. The “24dB” setting engages
