Velodyne CHT-15Q User Manual - Installation
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CHT-Q Series User’s Manual - 3
INSTALLATION
Inputs
your new subwoofer is equipped with speaker-level and line-level inputs. Use the lIne leVel jacks when
connectingyoursubwoofertoapre-amp,signalprocessor(suchasLFEout),linelevelcrossover,orreceiver
with pre-amp level outputs. when using the line level jacks, some receivers may not provide enough signal to
havetheunit’sauto-onfeatureoperateproperly.Additionally,thislackofsignalmayalsocausethesubwoofer
to produce less output than it is capable of.
To alleviate this condition, we recommend the following steps:
1) Ifusinglineleveljacks,BOTHTHELEFTANDRIGHTINPUTSHOULDALWAYSBEUSEDneveruse
just the left or just the right input. If using line level connections from a preamp or signal processor, use
both left and Right inputs from your preprocessor or preamp and connect them to the left and Right
inputsonyoursubwoofer.(Seefigure4onpage10.)
2) IfusingareceiverwithLFEout,besuretheLFEchannelissendingadequatesignaltothesubwoofer.
Thesubwoofer’sdefaultvolumesettingis30ona1-80scale(roughly1/3volume).AdjusttheLFE
channel on your receiver or processor to achieve the desired bass output. See your receiver or
processor’sowner’smanualformoreinformation.(Seefigure5onpage11.)
Volume Control
This control allows you to balance the output from the subwoofer to the main speakers in your system. This
control should be set to achieve similar output levels from both the main speakers and subwoofer when listening
to music. The default volume setting is 30 on a 1-80 scale.
Warning:
Some manufacturers preset their receivers with the Sub-Out channel signal at a minimum level. It is very important
to verify that your receiver Sub-Out channel is set to the same output level as your front right and left channels.
Refer to your receiver manual for the individual channel level adjustment procedure. If your receiver Sub-Out
channel is set too low, the subwoofer may appear to have a weak output, it may sound noisy or distorted, and
the Auto On/Off feature may not operate properly.
Low-pass Crossover - 40 to 120 Hz
Allinputssumtheleftandrightchannelstogether,withtheresultingsignalpassingthroughanadjustable
low-passcrossoverbeforebeingamplified.Thecrossovercontrolallowsyoutoadjusttheupperlimitofthe
subwoofer’sfrequencyresponsefrom40to120Hz.Thesubwoofer’sresponsewillbeginrollingoffabovethe
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 with limited
lowfrequencyoutput,youmaywishtochooseahigherfrequency(suchas100-120Hz)thanyouwouldwith
largerspeakerswhichhavegreaterlowfrequencyoutput.Thedefaultcrossoversettingis80Hz.Withlarger
speakers,youmaywanttosetthisevenlower,forexample70Hz.
Phase Adjustment - 0°/90°/180°/270°
This control allows you to change the phase of the subwoofer’s output signal to correct for any possible mismatch
andresultingcancellationbetweenthesubwooferandyourmainspeakers/amplifier.Toadjust,simplylistento