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Even if you have used an equalizer before, please take time to review this manual to take complete advantage of the R/EQ-150’s unique capabilities. R/EQ-150 Room Equalizer 4 0 Hz 80 Hz 1 2 0 Hz 2.5 kH z By p a ss Le v e 6 kHz Product Overview Loudspeakers interact with every room differently. Often room acoustics are challenging and compromises in speaker size and placement have to be made for aesthetic reasons. Consequently, the quality of sound may not be as good as intended. Your Parasound R/EQ-150 permits you to subtly adjust the frequency response characteristics in these situations and improve overall sound quality. The Parasound R/EQ-150 has one-half octave width ±8 dB boost and cut controls centered at 40 Hz, 80 Hz, 120 Hz, 2.5 kHz and 6 kHz. These frequency ranges were carefully selected so that you can easily make precise improvements in frequency response curves in difficult installations while minimizing potential adverse effects should the controls become accidentally misadjusted. Unpacking the R/EQ-150 You should find the following items within the packing carton: · The R/EQ-150 · An 18 AWG audiophile-grade AC cord · Owner's manual Save your carton and packing inserts for safe transport in case you move or the unit ever requires repair. If you ever need to ship the R/EQ-150 to us, be sure to pack it into an additional outer carton for protection against shipping damage. Locate the serial number for the R/EQ-150 on the bottom of the unit and record it here for future reference: __________________ Parasound Placement of Your R/EQ-150 Your R/EQ-150 may be located with your other audio/video components. Once final adjustments have been made, you can even locate it out of sight. Try to keep your R/EQ-150 away from AC power cords or power amplifiers that might induce hum and noise. The R/EQ-150 generates virtually no heat so it does not require ventilation. AC Connections Connect the supplied AC cord from the AC inlet of the R/EQ-150 to a nearby AC wall outlet or power strip. There is no AC switch on the R/EQ-150; it is powered on whenever it is plugged in. Its power consumption is negligible, so you do not need to worry about switching it on and off with the rest of your system. Connecting Your R/EQ-150 Between a Preamplifier and Power Amplifier Connect your preamplifier’s left and right line or main outputs to the left and right input jacks on your R/EQ-150. Next, connect the left and right outputs of the R/EQ-150 to the left and right input jacks of your power amplifier. Connecting Your R/EQ-150 into a Tape Monitor Loop If your preamplifier or receiver has an unused tape monitor loop, connect the Rec/Out jacks of the preamp or receiver to the left and right input jacks of your R/EQ-150. Next, connect the output jacks of the R/EQ-150 to the Play/In jacks of your preamp or receiver. Press the preamplifier or receiver's monitor button to engage the R/EQ-150 Connecting Your R/EQ-150 into a Surround System Connect your surround processor’s front left and right line or main outputs to the left and right input jacks on your R/EQ-150. Next, connect the left and right outputs of the R/EQ-150 to the left and right input jacks of your power amplifier. With additional R/EQ-150s, you can also this process for your center, surround, and subwoofer channels. Do not connect the R/EQ-150 to the processor's input to prevent overload and distortion. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 120 Vac/60 Hz 5W R/EQ-150 Room Equalizer Parasound Products, Inc. San Francisco, CA USA Input Output R L Fuse Holder Connect Input Jacks Connect Output JacksAC Connectorto line Output Jacks to Input Jacks of of Preamp or Play/Out Power Amp or Rec/In Jacks of Receiver Tape of Receiver Tape Monitor Loop Monitor Loop Drawing # 1: Rear Panel Connections -2 R/EQ-150 Owner's Manual Operating Your R/EQ-150 Adjusting the R/EQ-150 Level Control Once you have installed the R/EQ-150 into your system, set all its frequency controls to their center detented positions. Next, set the volume control on your preamp or receiver to a comfortable level. Finally, adjust the level control on the R/EQ-150 so that the relative output level through the speakers is the same when its bypass switch is switched in and out. This establishes a “unity gain” position. You may boost or cut the overall level of the R/EQ-150 with this control as desired for best signal to noise performance. Bypass Switch The bypass switch is a handy way to compare music with and without equalization. In the on (depressed) position, the signal from the preamplifier is routed around all of the equalization circuits while leaving the level control active. This allows you to instantly compare between flat and equalized settings without having to individually readjust the frequency controls to flat. An LED alerts you to the bypass status. R/EQ-150 Room Equalizer 40 Hz 80 Hz 120 Hz 2.5 kHz Bypass Level6 kHz Drawing # 2: Front Panel Controls Adjusting the R/EQ-150 Frequency Controls Befo...