Velodyne VRP-1200 User Manual download pdf (Page 6)

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SPLi Series User’s Manual

Inputs

Your new subwoofer is equipped with speaker-level and line-level inputs. Use the LINE LEVEL

jacks when connecting your subwoofer to a pre-amp, signal processor, line-level crossover or

receiver with pre-amp level outputs. The

SPEAKER LEVEL jacks connect directly to the speaker

outputs of any amplifier, integrated amplifier or receiver. Your amplifier section will notice no

additional loading effects when you use these inputs due to their very high impedance.

Important!!!

Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!

Volume Control

This control allows you to balance the output from the subwoofer to the main

speakers/amplifier in your system. This control should be set to achieve similar output level

from both the main speakers and subwoofer when listening to music. A good starting point for

the volume control is 3 or 4 dots from minimum.

Low-pass Crossover - 40 to 120 Hz

All inputs sum the left and right channels together, with the r

esulting signal passing through an

adjustable low-pass crossover before being amplified. The crossover control allows you to adjust

the upper limit of the subwoofer’s frequency response from 40 to 120 Hz. The subwoofer’s

response will begin rolling off above the frequency you set this control to. You should set the

crossover frequency to obtain a smooth and seamless transition from the subwoofer to the

main speakers in your system. If your main speakers are smaller units with limited low frequency

output, you may wish to choose a higher frequency (such as 100 -120 Hz) than you would with

lar

ger speakers which have gr

eater low frequency output. With lar

ger speakers, you might start

with this contr

ol set lower, such as 80 Hz.

A bypass switch is also pr

ovided if you wish to use an exter

nal crossover

If you ar

e not using

an exter

nal crossover, we recommend that you use the one provided within the unit for

optimum performance!

Phase Adjustment - 0°/180°

This contr

ol allows you to “r

everse” the phase of the subwoofer’

s output signal 180

to cor

rect

for any possible mismatch and resulting cancellation between the subwoofer and your main

speakers/amplifier

. T

o adjust, simply listen to the system with music playing. Then move the

switch fr

om one position to the other and listen for a change in low fr

equency output. The

correct position will have a greater amount of apparent low frequency output.

Crossover Switch - INTERNAL X-OVER/SUBWOOFER DIRECT

This switch allows the internal crossover circuitry to be removed from the signal path. This is

required in certain installations which route the signal through external processors with a

ossover cir

cuit of their own, such as the new digital units. Simply move the switch to

SUBWOOFER DIRECT to disengage the built-in crossover. For all other installations which do

not have a separate electr

onic cr

ossover, we recommend you leave the switch set to

INTERNAL X-OVER to provide optimum performance.

Installation

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Velodyne VRP-1200 User Manual Page 6

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