Technical Pro RX45BT Home Theater Receiver and Rockville REQ20 Graphic Equalizer Instruction Manual

Introduction

This manual provides detailed instructions for the proper setup, operation, and maintenance of your Technical Pro RX45BT Home Theater Receiver and Rockville REQ20 Graphic Equalizer. Please read this manual thoroughly before using the products to ensure optimal performance and safety.

Important Safety Instructions

Always follow basic safety precautions when using electronic equipment to reduce the risk of fire, electric shock, and injury.

Do not expose this appliance to rain or moisture.
Do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified personnel.
Ensure proper ventilation. Do not block ventilation openings.
Connect only to a grounded AC power outlet.
Protect the power cord from being walked on or pinched.
Unplug the unit during lightning storms or when unused for long periods.
Do not operate near heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

Package Contents

Verify that all items are included in your package:

Technical Pro RX45BT Home Theater Receiver
Rockville REQ20 19" Rack Mount Pro Dual 10 Band Graphic Equalizer
Remote Control for RX45BT
Power Cable for REQ20
Rack Mount Brackets for REQ20 (2 pcs)
Mounting Screws for Brackets

Technical Pro RX45BT Receiver Overview

Front Panel Controls and Features

The front panel of the RX45BT receiver provides access to various controls and input options.

Technical Pro RX45BT Receiver Front Panel with Remote

Image: Front view of the Technical Pro RX45BT Home Theater Receiver, showing the main display, input selection buttons, microphone volume, master volume, and various tone controls. The included remote control is also visible next to the receiver.

Technical Pro RX45BT Receiver Front Panel Angled View

Image: Angled front view of the Technical Pro RX45BT Home Theater Receiver, highlighting the illuminated blue display and control knobs.

Power Button: Turns the unit on or off.
Microphone Volume: Adjusts the volume for connected microphones.
Master Volume: Controls the overall output volume.
Input Selectors: Buttons for Tuner, DVD, AUX/MP3, SD/USB, Bluetooth.
Display: Digital fluorescent output display meter showing current status and audio levels.
Echo, Mic Treble, Mic Bass: Controls for microphone effects and tone.
Bass, Treble, Balance: Tone controls for main audio output.
MIC1, MIC2 Inputs: 1/4" microphone input jacks.
USB Port: For connecting USB flash drives.
SD Card Slot: For inserting SD cards.
Headphone Output: 1/8'' jack for headphones.

Rear Panel Connections

The rear panel provides all necessary audio input and output connections, along with power input.

Image: Rear view of the Technical Pro RX45BT Home Theater Receiver, showing RCA audio inputs (AUX, DVD), audio outputs (Line Out, Sub Out), speaker terminals (Main, Surround), FM antenna input, and power input with voltage selector.

FM ANTENNA: Connection for the FM antenna.
AUDIO INPUT (RCA): Two sets of RCA inputs for audio sources (AUX, DVD).
OUTPUT (RCA): Line Out and two Mono RCA Subwoofer Outputs (Sub1, Sub2).
SURROUND SPEAKERS: Push-button terminals for surround speakers. Note: Surround sound only works when all surround speakers are connected and only with 8 ohm speakers.
MAIN SPEAKERS: Banana binding post terminals for main speakers.
POWER INPUT: AC power inlet with voltage selector (110/220V).

Rockville REQ20 Graphic Equalizer Overview

The Rockville REQ20 is a dual 10-band graphic equalizer designed to fine-tune your audio system's frequency response.

Rockville REQ20 Graphic Equalizer Front Panel

Image: Front view of the Rockville REQ20 19" Rack Mount Pro Dual 10 Band Graphic Equalizer, featuring blue LED illuminated slide controls for each frequency band, dual VU meters, and power switch.

Rockville REQ20 Graphic Equalizer with accessories

Image: The Rockville REQ20 Graphic Equalizer shown with its included rack mount brackets and power cable.

Power Switch: Turns the unit on or off.
Equalizer Slide Controls: Dual 10-band controls (20 bands total) with blue LEDs for adjusting specific frequency ranges (e.g., 32Hz, 64Hz, 125Hz, 250Hz, 500Hz, 1KHz, 2KHz, 4KHz, 8KHz, 16KHz).
VU Meters: Dual meters to monitor left and right channel audio levels.
Volume Gain Control: Separate left/right channel volume gain controls.
RCA Line Input: Stereo RCA input for connecting audio sources.
RCA Line Output: Stereo RCA output for connecting to an amplifier or receiver.
RCA Line Output for Record: Additional stereo RCA output for recording purposes.

Setup Instructions

Follow these steps to properly set up your Technical Pro RX45BT Receiver and Rockville REQ20 Equalizer.

1. Placement

Place the receiver and equalizer on a stable, flat surface with adequate ventilation.
Ensure there is enough space around the units for proper airflow to prevent overheating.
The REQ20 is designed for 19" rack mounting. Use the included brackets and screws if rack mounting.

2. Connecting Speakers to RX45BT

Connect your speakers to the appropriate terminals on the rear panel of the RX45BT receiver.

Main Speakers: Use banana plugs or bare wire to connect your main left and right speakers to the "MAIN SPEAKERS" binding posts. Ensure correct polarity (+ to + and - to -).
Surround Speakers: Connect your surround speakers to the "SURROUND SPEAKERS" push-button terminals. Note that surround sound functionality requires all surround speakers to be connected and they must be 8 ohm speakers.

3. Connecting Audio Sources to RX45BT

Connect your external audio devices to the RCA input jacks on the rear panel.

Use RCA cables to connect devices like DVD players, CD players, or other audio sources to the "DVD" or "AUX" input jacks.
For MP3 players or other devices with a 3.5mm output, use an appropriate adapter cable to connect to the "AUX/MP3" input on the front panel.

4. Connecting the Rockville REQ20 Equalizer

To integrate the REQ20 equalizer into your audio system, connect it between your audio source and the RX45BT receiver, or between the receiver's line out and an external amplifier if you are using one.

Typical Connection (Equalizer between source and receiver):

Connect your audio source (e.g., CD player) to the "RCA Line Input" of the REQ20 using RCA cables.
Connect the "RCA Line Output" of the REQ20 to one of the "AUDIO INPUT" (e.g., DVD or AUX) jacks on the rear of the RX45BT receiver using RCA cables.

Alternative Connection (Equalizer in a tape loop or processor loop, if available on your receiver):

If your receiver has a dedicated processor loop or tape monitor loop, you can connect the equalizer there. The RX45BT has a "Line Out" which can be used to feed an external amplifier, but not a dedicated processor loop for an equalizer to be inserted directly into the main signal path for all inputs. The recommended method is to place it between a specific source and the receiver.

5. Power Connection

Ensure both the RX45BT and REQ20 are switched off.
Connect the power cords of both units to a standard AC power outlet.
Verify the voltage selector on the RX45BT rear panel is set correctly for your region (110V or 220V).

Operating Instructions - RX45BT Receiver

1. Basic Operation

Press the Power button to turn on the receiver.
Select your desired audio source using the Input Selector buttons on the front panel (Tuner, DVD, AUX/MP3, SD/USB, Bluetooth).
Adjust the overall volume using the Master Volume knob.
Use the Bass, Treble, and Balance controls to fine-tune the audio output.

2. Bluetooth Pairing

Press the Bluetooth input selector button on the front panel. The display will indicate "Bluetooth" or a pairing mode.
Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
Search for available devices and select "RX45BT" from the list.
Once paired, you can stream audio from your device to the receiver.

3. USB/SD Card Playback & Recording

The RX45BT supports playback of .mp3, .wav, and .wma files from USB drives and SD cards (up to 32GB).

Playback:

Insert a USB flash drive or SD card into the respective slot on the front panel.
Select the SD/USB input. The unit will automatically begin playing compatible audio files.
Use the playback controls (Repeat/Random) on the unit or remote.

Recording:

The unit can record .wav files (128 kbps / 32 KHz sampling rate) onto a USB Flash Drive or SD Card from the Tuner or RCA inputs.

Insert a USB flash drive or SD card.
Select the desired input source (Tuner or an RCA input like DVD/AUX).
Press the Record button (if available on the unit or remote) to start recording. Press again to stop.

4. Microphone Controls

Connect up to two microphones to the MIC1 and MIC2 1/4" input jacks on the front panel.

Adjust microphone volume using the Microphone Volume knob.
Apply echo effect using the Echo control.
Adjust microphone tone with Mic Treble and Mic Bass controls.

5. FM Tuner Operation

Connect the FM antenna to the rear panel for optimal reception.

Select the Tuner input.
Use the manual tuning controls (or remote) to find desired FM radio stations.

6. Remote Control

The included remote control provides convenient access to most receiver functions from a distance.

Image: Close-up of the Technical Pro RX45BT remote control, showing buttons for power, input selection, volume, EQ, number pad, and playback controls.

Refer to the button labels on the remote for specific functions such as input selection, volume adjustment, EQ presets, and media playback controls.

Operating Instructions - REQ20 Equalizer

1. Equalizer Controls

The REQ20 features dual 10-band graphic equalization for precise audio shaping.

Use the individual slide controls for each frequency band (32Hz to 16KHz) to boost or cut specific frequencies.
Adjust the left and right channels independently for stereo equalization.
The blue LEDs on each slider indicate the active status.

2. VU Meters

The dual VU meters provide a visual representation of the audio signal level for both the left and right channels.

Monitor the meters to ensure your audio levels are not clipping (too high) or too low.
Adjust the separate Left/Right Channel Volume gain controls to optimize signal levels.

Maintenance

Cleaning: Use a soft, dry cloth to clean the exterior of the units. Do not use liquid cleaners or aerosols.
Ventilation: Ensure ventilation openings are clear of dust and debris.
Storage: If storing the units for an extended period, disconnect them from power and store in a cool, dry place.

Troubleshooting

Problem	Possible Cause	Solution
No power	Power cord not connected; Power outlet faulty; Voltage selector incorrect (RX45BT).	Check power cord connection; Try a different outlet; Verify RX45BT voltage selector setting.
No sound from speakers	Incorrect input selected; Speaker wires loose or incorrectly connected; Volume too low; Mute activated.	Select correct input; Check speaker connections and polarity; Increase Master Volume; Deactivate Mute.
Bluetooth not pairing	RX45BT not in Bluetooth mode; Device too far; Device already paired with another unit.	Ensure RX45BT is in Bluetooth mode; Move device closer; Disconnect from other devices and try again.
USB/SD card not playing	Unsupported file format; Card/drive not inserted correctly; Card/drive capacity too large.	Ensure files are .mp3, .wav, or .wma; Reinsert card/drive; Use card/drive up to 32GB.
Equalizer has no effect	REQ20 not powered on; Incorrect connection; EQ sliders at neutral position.	Ensure REQ20 is powered on; Verify RCA connections between source/receiver and REQ20; Adjust EQ sliders.

Specifications