a/d/s/ 336im, 335im, 334im manual Speaker wiring

bi-wire connections to the crossover network

connections to the woofer and tweeter are the same as the normal wiring method. Connect the amplifier to the tweeter to the terminals marked tweeter input. Connect the woofer amplifier to the woofer input terminals with another run of wire.

Important note - you must cut the jumpers that connect the low frequency and high frequency sections of the crossover. See diagram . Failing to cut these jumpers could cause damage to the amplifiers or the crossover.

for biamp operation cut these jumpers

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midrange contour

The two position switch labeled car / demo adjusts the frequency response of the midrange driver. The car position is optimized for in car off axis listening. The demo position offers flat frequency response when the speakers are able to be placed on axis to the listener. This control will effect the presence or forwardness of the sound stage. You can experiment with both positions and set to your preference.

connections to the amplifier

The 3-series crossover is supplied with a removable screw type connector. Strip the wire from the amplifier about 1/4" from the end and insert into the connector input + and - positions and tighten the set screws. Strip the wire from the woofer and insert into the + and - positions for the crossover woofer output. Follow the same procedure for the connection to the tweeter. The 3-series passive crossover has two sets of input terminals, this allows the system to be bi-wired or bi-amplified. If you select to use one of these wiring schemes you must cut the jumpers in the crossover to electrically separate the high-pass and low-pass sections (see diagram on page 14 for location of jumpers).

To bi-amplify the system you will need two stereo amplifiers (or 4 amplifier channels) one for the tweeters and one for the woofers.

If you choose to bi-wire the system, connect the high-pass terminals to the amplifier and connect the 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 positive amplifier terminals, also ensure that the negative crossover terminals connect to the negative amplifier and speaker terminals.

Once all of the wires are attached to the connector and the crossover is mounted, the connector can be plugged into its mating receptacle on the crossover.

speaker wiring

speaker wire selection

Use insulated two-conductor stranded wire to connect the 3-series crossover to the speakers and 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 frequency response. For wire runs of 50 feet or less, we recommend 16 gauge or larger wire. The crossover connector will accept up to 14 gauge wire.

polarity and phasing

The polarity - the positive / negative orientation of the connections - for every speaker and amplifier connection must be consistent so all the speakers will be in phase. When the polarity of one connection is reversed, bass output is reduced and stereo imaging is degraded. All wire is marked so you can identify the two conductors. There may be ribs or a stripe on the insulation of one conductor. Or the wire may have clear insulation with different color conductors (copper and silver). Or there may be polarity indications printed on the insulation. Identify the positive and 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 connecting the 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 bridged channels. Of course, proper polarity of the connections is still important, so one of the terminals must be designated as positive and one as negative.

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