In fact, you can use both the 1/4" jacks and the binding posts simultaneously. Just remem- ber that doing so creates two parallel loads.
Please see “Do The Math: Ohms, Loads and Such” in Appendix E to learn about speaker loads.
Be Aware: Should you
choose to terminate your
speaker cables with the
1/4" TS plugs, make sure
nobody confuses these cables with
If you’re using low impedance loads at high power levels, we recommend that you use the binding post speaker outputs rather than the 1/4" TS jacks. Although 1/4" jacks are conve- nient and easy to use, they were not designed to handle
Note (M•1400 only): In addition to the binding posts, the M•1400 also has Speakon® connectors for connecting the speakers to the amplifier. These are locking connectors that are easy to attach and are designed to handle high power levels into
Before making connections
to an amp or reconfiguring
an amp’s signal routing,
turn the amp’s GAIN controls down, turn the POWER off, make the changes, turn the
POWER back on, and then turn the GAIN con- trols back up. Although the M•1200/M•1400 amplifiers can handle “opens” (no connection)
and “shorts” (positive and negative signal lines in direct contact), you don’t want the speaker ends of live cables to zap every piece of equip- ment they touch as they’re being dragged across the stage.
Ordinarily, applying a posi-
tive voltage to a speaker’s
positive input and negative
voltage to the negative input
results in an outward excur- sion of the woofer. But some woofers are built with reverse polarity, meaning that the above conditions result in an inward excursion.
If you’re not sure which type of speakers you have, take a look at their literature. If you’re still not sure, here is a simple test: take a 1.5V flashlight battery and connect the positive terminal of the battery to the positive (+) in- put of the speaker, and connect the negative terminal of the battery to the negative
INPUT
The M•1200/M•1400 amplifiers give you a choice — they have the traditional XLR inputs, as well as 1/4" TRS
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| CAUTION | WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT | |
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| EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER. | |
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| RISK OF ELECTRIC SHOCK | NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. | |
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| DO NOT OPEN | AVIS: RISCQUE DE CHOC ÉLECTRIQUE — NE PAS OUVRIR | |
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| REPLACE WITH THE SAME TYPE FUSE AND RATING. |
| UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE. |
(MONO BRIDGE) |
| DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE |
| DEBRANCHER AVANT DE REMPLACER LE FUSIBLE |
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1400 WATTS |
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4 OHM LOAD MIN. |
| MONO |
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700 WATTS CH | CH | – | CH | |
2 OHMS LOAD MIN. | + BRIDGE | |||
| 1 |
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| 2 |
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| + |
| + |
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| – |
| – |
120 VAC 50/60 Hz |
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1500 WATTS |
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| SPEAKER OUTPUTS |
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SERIAL NUMBER | MANUFACTURING DATE |
CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE DESIGNS INC • WOODINVILLE • WA 98072 • USA • MADE IN USA • PATENTS PENDING
M•1400 Rear Panel
16