Cadence Xenith Xa400.1 Installation Guide download pdf (Page 5)

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The wire harness should be made of red primary cable of at least 8 gauge for the Xa125.2 and at least 4 gauge for all other larger models. The harness should terminate in a

large ring terminal for connection directly to the positive terminal of the car battery. Use a spade plug to attach the wire, which connects to the amplifier location marked 12V+.

A second black color wire of equal gauge should be used as a ground connection to a welded chassis member. When connecting the ground wire make sure that there is no paint or

other insulator blocking a good ground connection. When installing multiple amplifiers, mount them in close proximity so that they can all share the same ground point. Attach the black

ground wire to the amplifier screw terminal marked Ground.

We recommend that you use the Cadence AMP1000 or AMP1500 amplifier installation kits, which contains all the cabling and accessories necessary for a good, reliable installation.

Over the years we have received amplifiers back to our service department with melted power/ground terminals. The cause of this is a bad ground connection. When there is a lack of

good ground, heat builds up at the weakest point which happens to be the contact screw of the amplifier terminal. Over time the heat generated will begin to melt the terminal. It is a good

practice to feel the power and ground wires with your hands, near their amplifier connection after having played the amp for a while. If the wires feel hot to the touch you probably have a

bad or loose connection. If you are sure of your connections and the wires still feel hot to the touch, you should upgrade the gauge of wire to next heaviest gauge.

The remote turn on connection is located on the barrier strip next to the power and ground connections. This connection is responsible for turning the amplifier on and off with the rest of

the system. A smaller gauge wire can be used to make this connection to your radio's power antenna lead. Should your system not have any turn on leads, you can wire the remote

terminal to an accessory lead, which turns on, with your cars ignition.

The Xenith Series amplifiers feature RCA pre amp inputs. Run RCA cables from your sound source to the inputs of the amplifier. We suggest the use of high quality shielded RCA patch

cords to help reduce and eliminate unwanted electrical noise to your system.

Be sure to run the RCA cables on the opposite side of the vehicle that you used to carry the power and ground leads of the amplifier.

All the Xenith Series amplifiers feature 12dB per octave fully adjustable low-pass and high pass electronic crossovers.

For Low Pass sub woofer systems, set the CROSSOVER MODE switch to LOW PASS. Now the knob marked FREQUENCY will control the low pass frequencies from 40Hz to 160H on

stereo amplifiers and 40Hz to 250Hz on mono block amplifiers. A frequent error made is setting the low pass frequency too low, especially when using vented sub woofer enclosures.

We recommend that for most installations you do not set the frequency knob lower than 80 - 100Hz (the 12 o’clock position).

When using the amplifiers for component speakers or co-axials, you will want to set the CROSSOVER MODE switch to HIGH PASS. The FREQUENCY control knob adjusts the high

pass frequencies between 40Hz and 6000Hz. Do not attach tweeters directly to the amplifier, (even in the high pass mode) without a secondary passive crossover to protect

them.Typically 600Hz high pass is not ahigh enough cut-off frequency for tweeters.

For sub woofer installations with a passive LP crossove installed on the woofer, you can set the amplifier’s CROSSOVER MODE selector to HIGH PASS while setting the FREQUENCY

KNOB to 40Hz, this will act as SUBSONIC FILTER for all signals below 40Hz. This is especially useful for vented enclosures where the port tuning frequency falls below the sub woofer

tuning frequency to protect against sub woofer unloading.

REMOTE TURN ON CONECTION:

SETTING THE CONTROLS

AUDIO PREAMP INPUT

USING THE BUILT-IN LOW PASS ELECTRONIC CROSSOVER

SUBSONIC FILTERING

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Cadence Xenith Xa400.1 Installation Guide Page 5

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