Manual Klipsch RSA-500 (page 4 of 16) (English, French, Spanish)

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• Level Control – Play a variety of music recordings containing

strong but not overpowering bass. Adjust the RSA-500 level con-

trol until the music sounds consistently warm and natural. If you

have trouble getting enough low bass without the sound becom-

ing boomy, it probably means the Crossover control is set too

high. Try turning it down a bit at a time until the problem goes

away. If the sound is thin until you turn the subwoofer Level up so

much that lower bass is too prominent, start by changing the set-

ting of the Phase control. If that does not entirely solve the prob-

lem, you probably need to raise the Crossover frequency.

• Phase Control – In some installations the setting of the Phase

control ma

y not make much difference, whereas in others it may

be necessary to go back and forth between the Phase

and Level controls for a while in order to get the very best blend

with the main speakers. Since each control setting (including the

one for crossover frequency in the receiver or processor) affects

the optimum settings for the others, it often takes a while to get

everything dialed in just right. Start with the Phase control at 0°

and play a recording with a prominent, repeating bass line in

your listening position. Repeat this process with the control in

the 180° position. Use the setting that yields the greatest

bass output.

General Comments About Adjustments: Since any change in

the setting of one control tends to change the optimum settings

or the others to some degree, the adjustment process is very

interactive and involves a great deal of trial and error. If after a

period of listening and calibration you are still not happy, it may

mean that you need to experiment a little with the location of the

subwoofer. That, of course, also interacts with everything else.

Again, patience is a virtue. The end result will be well worth the

effort.

ANALOG SURROUND RECEIVER / PROCESSOR OR

O-CHANNEL STEREO SYSTEM CONNECTION

Some analog A/V receivers and processors (without Dolby Digital

or DTS

capability) have a line-level subwoofer output. Others

have left- and right-channel line-level outputs, as do some stereo

receivers and integrated amplifiers. All separate stereo preamps

and surround processors have line-level outputs. If your system is

built around one of these, it will almost always be best to use the

RSA-500’s stereo line level inputs. This will allow use of the

crossover and level controls (Figure 4). You will need one or two

shielded, high quality interconnect cables of appropriate length

with RCA plugs on each end. Your dealer can help you select

suitable cables.

• Subwoofer Output – Connect the subwoofer output jack to

one or both of the line-level input jacks on the RSA-500.

• Preamp Outputs on Receiver or Integrated Amplifier – If

your receiver or integ

rated amplifier has spare preamplifier out-

puts for its front left and right channels and no subwoofer output,

connect these to the stereo line-level inputs on the RSA-500.

• Pre-out/Main-in Loops on Receiver or Integrated Amplifier

Some receivers and integrated amplifiers have their preamplifier

and power amplifier sta

ges connected externally via jumpers. If

yours has its left and right front channels connected this way, you

can connect the RSA-500 to those preamp outputs. You will need

a pair of Y-adaptors, each with two male RCA plugs and one

female RCA jack. Remove the jumpers for the two channels. For

each, plug one leg of a Y-adaptor into the preamp output jack and

another into the main amp input jack. Plug the cables leading to

the RSA-500 into the female ends of the Y-adaptors.

• Separate Preamplifier or Surround Processor – You will

need a pair of

Y-adaptors, each with one male RCA plug and two

female RCA jacks. Unplug the cables leading from the front left-

and right-channel outputs on the preamp or processor and plug

the Y-adaptors into them. For each channel, plug the cable lead-

ing to the power amplifier into one of the RCA jacks on the Y-

adaptor and the cable leading to the RSA-500 into the other.

• Crossover Adjustment – Set the control to the approximate

low-frequency limit of your main left and right front speakers.

you don’t have their specifications, take an educated guess

based on the size of the speakers. A large speaker will usually

work down to lower frequencies than a small speaker. So for a

large floorstanding loudspeaker, you might start with the

Crossover frequency set all the way down to 40Hz, whereas for

very small satellite speakers you might want to turn it all the way

up to 120Hz. Typical bookshelf speakers would tend to be in the

50Hz to 80Hz range. If the crossover frequency is set higher than

100Hz, the subwoofer should be in the front of the room

near the front main speakers.

• Level Control – Play a variety of music recordings containing

strong but not overpowering bass.

Adjust the RSA-500 level con-

trol until the music sounds consistently warm and natural. If you

have trouble getting enough low bass without the sound becom-

ing boomy, it probably means the Crossover control is set too

high. Try turning it down a bit at a time until the problem goes

away. If the sound is thin until you turn the subwoofer Level up so

much that lower bass is too prominent, start by changing the set-

ting of the Phase control. If that does not entirely solve the prob-

lem, you probably need to raise the Crossover frequency.

• Phase Control – In some installations the setting of the Phase

control ma

y not make much difference, whereas in others it may

be necessary to go back and forth between the Phase and Level

controls for a while in order to get the very best blend with the

main speakers. Since each control setting (including the one for

crossover frequency in the receiver or processor) affects the opti-

mum settings for the others, it often takes a while to get every-

thing dialed in just right. Start with the Phase control at 0° and

Figure 4

RSA-500 SUBWOOFER AMPLIFIER

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Klipsch RSA-500 Manual

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