Soundstream Technologies MC-300 owner manual Power Connections, Remote Power-Onconnection

POWER CONNECTIONS

Note: your amplifier can on/y be operated from a 1% volf

NegativeGroundefecfricatsysfem. Ifyourcarwasproduced before 1970. orifyouhaveanydoubts. mahesureofthe type Of electrical system you have before making any connectfons.

The MC.300 will draw up to 45 amperes if used to its fullest capacity~ Determine the alternator rating of your car and the Current consumption ofthe car’s other accessories. It may be necessary to upgrade the alternator or to install a separate battery and battery isolator.

For power wiring. use Soundstream power cable or an equivalent premium cable. The PLUS 12Vterminal[(3) in the wiring diagram] should be connected directly to the positive

(+)terminal of your car battery. Install two (2) 20 amp fuses iin parallel) in the line close to the battery terminal. If you have more than one amplifier, each amplifier should be separately fused.

The GROUND terminal (2) should be connected directly to the automobile chassis with 8 gauge wire. Make this wire as short as possible to prevent noise in the system A nearby bolt can serve as a ground terminal. Make sure that the wire contacts bare metal, not coated metal or paint. It is important that the ground connection you select have minimal noise resistance to the battery ground post (a maximum of 0.1 ohm)~

REMOTE POWER-ON CONNECTION

If your tuner/deck has a remote power,on control wire, connect it to the REMOTE terminal (1) on your amplifier. This isacontrol line. notapowerline. sosmallwire (1820gauge) is acceptable.

If your tuner/deck has no remote power-on control labeled as such, but has a power antenna control, it may be possible to wire the power antenna control to the REMOTE terminal.

If your tuner/deck has neither a remote power-on control wire nor a usable power antenna control; it will be necessary either to connect the REMOTE terminal to a +12 volt source which is switched by the ignition key. or to connect the REMOTE terminal to a constant +12 volt source through an on/off switch you install in series with the ignition switch in a location accessible to the driver. Note: /fan outboardswitch is used. make sure it is switched off when you leave the vehicle or when the sound system is not in use.

POWERING UP THE SYSTEM

Once the installation is complete, turn on the system. Both LED indicators on the MC.300 should now be lit. If they did not light up, turn thesystem off immediately. Proof wiring and check for shorts or poor connections.

If wiring is okay, check the relay or fuse in the power line. If blown, replace it with another identical fuse.

If one LED indicator is out, check the internal fuses located behrnd the bottom cover of the amp.Also check the interior _ power supply fuses~ If any of those are blown replace with the same value fuse.

INPUT LEVEL ADJUSTMENT

Input levels are adjusted by means of four independent controls that are accessible through the heat sink directly above the input connectors. The controlscan be turned with a small. flat~head screwdriver.

In four channel mode. the left and right halves of CHANNEL A are set by controls (13) and (14) respectively; the left and right halves of CHANNEL Bare set by controls (24) and (25).

In twochannel mode, onlythe”right”control(l4) rsoperatfve for CHANNEL A, and only (25) for CHANNEL B.

In three channel mode, use only the “right” control for whichever of main CHANNEL A or CHANNEL B is operating In mono, and both controls for the other main channel.

Depending on how you are using your MC.300 (number of channels, biamplification. associated equipment, etc.), dif- ferent factors may apply for optimum gain settings. In gen- eral, begin by turning all level controls to minimum (full counter-clockwise). Turn the system on, and set the volume control on your tuner/deck at its mid-point. Advance therq amplifier input level controls until you have reached a com- fortable listening level and both channels are in balance. No& with many tuneridecks, the radio output level is signifi~ cant/y different than the tape output /eve/. Check both sources. and set /eve/s using the lesser of the outputs (usuatty the tape).

LINEAR SUBWOOFER EXTENSION (LSE)

The LSE circuit will compensate for the natural rolloff of most loudspeakers, and can extend deep bass as much as one full octave. ForCHANNELA. LSEisengagedbypressingswitch

(9). and the frequency is adjusted by control (8). For CHAN- NEL B, LSE is engaged by pressing switch (20), and the frequency is adjusted by control (19). If either CHANNEL A or CHANNEL B is operating in stereo, LSE will be applied to both left and right.

The control allows for continuously variable adjustment, over the range from 35 Hz to 280 Hz; of the frequency at which LSE beginsits boost. Below thechosenfrequency. the boost is applied at 6 dB per octave. When properly adjusted, LSE will “linearize” the low end of the woofer(s) and provide remarkably smooth and deep bass. A word of caution: small

or inexpensively constructed woofers may be unable to- handle the equalization which results from setting the LSE to _ above 100 Hz.