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a/d/s/ 334im Installation Manual
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bi-wire connections to the crossover networkconnections to the woofer and tweeter are the same as the normal wiring method. Connect theamplifier to the tweeter to the terminals marked tweeter input. Connect the woofer amplifier tothe woofer input terminals with another run of wire.Important note - you must cut the jumpers that connect the low frequency and high frequencysections of the crossover. See diagram . Failing to cut these jumpers could cause damage to theamplifiers or the crossover.for biamp operation cut these jumpers714midrange contourThe two position switch labeled car / demo adjusts the frequency response of the midrangedriver. The car position is optimized for in car off axis listening. The demo position offers flatfrequency response when the speakers are able to be placed on axis to the listener. This controlwill effect the presence or forwardness of the sound stage. You can experiment with bothpositions and set to your preference.connections to the amplifierThe 3-series crossover is supplied with a removable screw type connector. Strip the wire from theamplifier about 1/4" from the end and insert into the connector input + and - positions andtighten the set screws. Strip the wire from the woofer and insert into the + and - positions forthe crossover woofer output. Follow the same procedure for the connection to the tweeter. The3-series passive crossover has two sets of input terminals, this allows the system to be bi-wiredor bi-amplified. If you select to use one of these wiring schemes you must cut the jumpers in thecrossover to electrically separate the high-pass and low-pass sections (see diagram on page 14for location of jumpers).To bi-amplify the system you will need two stereo amplifiers (or 4 amplifier channels) one for thetweeters and one for the woofers.If you choose to bi-wire the system, connect the high-pass terminals to the amplifier and connectthe low-pass terminals to the same amplifier with another set of speaker wires.Be sure to connect the positive crossover terminals to the positive speaker terminals and positiveamplifier terminals, also ensure that the negative crossover terminals connect to the negativeamplifier and speaker terminals.Once all of the wires are attached to the connector and the crossover is mounted, the connectorcan be plugged into its mating receptacle on the crossover.speaker wiringspeaker wire selectionUse insulated two-conductor stranded wire to connect the 3-series crossover to the speakersand amplifier. The size of the wire can have an audible effect of the performance of the system.Standard 18 gauge “zip cord” will work, but can result in lower output or unpredictable frequencyresponse. For wire runs of 50 feet or less, we recommend 16 gauge or larger wire. The crossoverconnector will accept up to 14 gauge wire.polarity and phasingThe polarity - the positive / negative orientation of the connections - for every speaker andamplifier connection must be consistent so all the speakers will be in phase. When the polarityof one connection is reversed, bass output is reduced and stereo imaging is degraded. All wireis marked so you can identify the two conductors. There may be ribs or a stripe on the insulationof one conductor. Or the wire may have clear insulation with different color conductors (copperand silver). Or there may be polarity indications printed on the insulation. Identify the positiveand negative conductors and be consistent with every speaker and amplifier connection.If one or more pairs of amplifier channels are bridged, there are special methods for connectingthe speaker wires. Instead of connecting the speaker wires to a positive (red) and negative(black) set of terminals, the speaker wires are connected the positive terminals of the bridgedchannels. Of course, proper polarity of the connections is still important, so one of the terminalsmust be designated as positive and one as negative. |
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