Cadence Flash F100-5 Installation Guide download pdf (Page 5)

INSTALLATION BASICS

SETTING THE CONTROLS:

AUDIO PREAMP INPUT

The Flash Series ampliers feature RCA pre amp inputs. Run RCA cables from your sound

source to the inputs of the amplier. 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 amplier.

USING THE BUILT-IN LOW PASS ELECTRONIC CROSSOVER

All the Flash Series ampliers 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 30Hz to 250Hz.

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 ampliers 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 30Hz and 300Hz. Do not attach tweeters directly to the amplier,

(even in the high pass mode) without a secondary passive crossover to protect them. 250Hz

high pass is not a frequency high enough for tweeters.

SUBSONIC FILTERING

For sub woofer installations with a passive LP crossover, you can set the amplier’s

CROSSOVER MODE selector to HIGH PASS while setting the FREQUENCY KNOB to 30Hz, this

will act as SUBSONIC FILTER for all signals below 30Hz. 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 CONNECTION:

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 amplier on and o 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.

POWER/GROUND WIRING:

The Flash Series ampliers are supplied with built-in fuses, never replace the fuse that the amp came

with, with one of a larger value.

We suggest you construct a Red wiring harness with 2 additional fuses. One fuse should be located

near the car battery. This fuse near the battery oers protection against damage from short circuits

to the car chassis between the battery and the amplier. A second fuse closer to the amplier oers

additional safety to the amplier itself. This fused red power wire should be attached to the amplier

power terminal marked 12V+.

The wire harness should be made of red primary cable of at least 8 gauge for the F200-2 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 amplier 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 ampliers, mount them in close

proximity so that they can all share the same ground point. Attach the black ground wire to the

amplier screw terminal marked Ground.

We recommend that you use the Cadence AMPKIT4 or AMPKIT8 amplier installation kits, which

contains all the cabling and accessories necessary for a good, reliable installation.

Over the years we have received ampliers 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 amplier 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 amplier 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.

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Cadence Flash F100-5 Installation Guide Page 5

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