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Using the Biamp Capabilities (con’t):Using the BT-350 as the high-frequency power amplifier:
In the biamp configuration shown below, the BT-350 serves as the system preamp, biamp crossover, and high-fre-
quency power amplifier. A second power amp of 200 to 500 watts may be used to amplify the low frequencies. The
crossover frequency (that point where one amplifier ends and the other amp takes over) is set by adjusting the BT-350’s
Biamp Frequency control (#13).
To connect the unit for biamp operation using the BT-350 as the high-frequency power amp, refer to the diagram below:
5Connect a shielded cable from the BT-350’s Biamp LOW OUT jack and the input of the amplifier which
will be used for the low frequencies.
6Connect a shielded cable from the BT-350’s Biamp HIGH OUT jack and its Effects Loop RETURNjack.
7Connect the Speaker Outputs of your low-frequency power amp to the speaker cabinet(s) that will be
used to reproduce the low bass notes. (Woofers in the 15” to 18” range work well for these low notes.)
8Connect the Speaker Outputs of the BT-350 to the speaker cabinet(s) that will be used to reproduce the
upper bass notes. (10” or 12” drivers work well for this.)
Use the BT-350’s Balance control (#14) to adjust the relative level of lows to highs: to increase the level of low fre-
quencies in the mix, rotate the Balance control to the left (towards “LOW”). To increase the amount of highs in the mix,
rotate the control to the right (towards “HIGH”).
BT-350
BT-350 ThunderBass Amplifier