Parasound req 150 owners manual

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-2- Parasound Drawing # 1: Rear Panel Connections CAUTIONRISK 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 RL Fuse Holder Connect Input Jacks to line Output Jacks of Preamp or Play/Out of Receiver Tape Monitor LoopAC Connector Connect Output Jacks to Input Jacks of Power Amp or Rec/In Jacks of Receiver Tape Monitor Loop 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 preamplifiers 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 processors 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.

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-3- R / E Q - 15 0 Owner's Manual R/EQ-150 Room Equalizer 40 Hz 80 Hz120 Hz2.5 kHz BypassLevel 6 kHz 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. Drawing # 2: Front Panel Controls Adjusting the R/EQ-150 Frequency Controls Before adjusting the R/EQ-150 frequency controls, make certain that all tone controls, loudness buttons, and other filters on your preamplifier or receiver are set at their flat or bypassed positions. This helps avoid interaction between multiple equalization circuits that can adversely affect the sound or overload your amplifiers or speakers. 40 and 80 Hz Low Bass Adjustments: The 40 Hz and 80 Hz controls have an adjustment range of ±8 dB and a frequency bandwidth of one-half octave. Turning these controls clockwise (boosting) adds very low bass so often missing from smaller or in-wall loudspeakers. Turning these controls counterclockwise (attenuating) can help reduce unwanted low frequencies that may contain inaudible information that can waste amplifier power and strain woofers. Attenuating these controls can also help tame boominess when speakers are mounted near room boundaries where bass is acoustically reinforced. The 80 Hz control will have a greater audible effect simply because most music contains more information at 80 Hz than at 40 Hz.