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RPM85 Owner's Manual

Ira - Zendesk Admin
Updated

2400W Powered 8 Channel Mixer w/USB, 5 Band EQ, Effects, and Bluetooth

Important Safety Instructions

  • To reduce risk of electric shock, never open the unit. There are no user-serviceable parts, refer service to the Rockville service center.
  • Do not expose this unit to any kind of moisture.
  • Please ensure that the unit is situated in a properly ventilated area.
  • Make sure the unit is placed on a level and stable surface.

Functions

  1. Channel FX control: controls the amount of signal sent from that channel to the FX controller module.
  2. Channel Treble control: ±15dB
  3. Channel Bass control: ±15dB

  4. Microphone/Low impedance XLR input: connect balanced low impedance microphones with an input impedance of 1K ohms.

    PIN 1 = shield, PIN 2 = positive (hot), PIN 3 = negative (cold)

    WARNING: When using condenser microphones, make sure that Phantom power (15V) is switched on (see item 14).

  5. Line/High impedance 1/4" TS input: This input may be used as either a high-impedance microphone input or for line-level devices such as a cassette player, CD player, video projector or laptop. Will also allow connection from an electric guitar, bass or keyboard. It is a two-conductor input with an impedance of 10k ohms.
  6. Channel volume control: This control acts as a preamp, if you are using a device that has a volume output control you will need to match levels by adjusting the level controls on each unit.

  7. Master FX controls:

    Level: Controls the level of the effects added back to the master mix.

    Echo: Controls character of the reverb that is added back to the master mix. It changes the rate at which the echo decays.

    Delay: Controls the timing of the delay. Turning the knob to the left will shorten the delay time, while turning the knob to the right will lengthen it.

  8. 5 Band Master equalizer: ±12dB; 60Hz, 250Hz, 800Hz, 2kHz, 8kHz

    WARNING: Most situations should require using no more than three controls simultaneously. Do not boost or cut all five at the same time. Excessive boosting will increase the probability of feedback and distortion.

  9. Output level LED indicators
  10. IR receiver
  11. USB/SD/BT radio digital controller: Play/Pause, Stop, Repeat, Rewind/Previous, Fast Forward/Next.
  12. Mode control: Push to switch between modes (USB/SD/Bluetooth)
  13. LED Power indicator

  14. Phantom Power ON/OFF button (Red LED indicates power on): Activate Phantom Power when using condenser mics.

    WARNING: Be sure to turn off Phantom Power when plugging or unplugging a condenser mic. Failure to do so may cause damage to your microphones.

  15. Master volume: controls overall volume of level of the mixer.
  16. BT/USB/SD volume: controls USB/SD/BT input volume.
  17. AUX volume: controls volume of line input.
  18. USB input port
  19. SD input slot

Please note: The RPM85 will not recognize SD cards or USB drives formatted in the NTFS format. SD cards and drives must be formatted in the FAT or FAT32 formats.

  1. Power switch
  2. IEC AC Power socket
  3. User serviceable fuse

  4. Speaker outputs: 1/4" TS jacks accept 4 ohm or 8 ohm speaker loads.

    WARNING: Do not operate below the rated minimum impedance of 4 ohms.

  5. Preouts: Sends out an unamplified version of the signal. This is post master level, so all mixer controls affect this output. It is used to expand your system to a powered subwoofer or another PA amplifier.

  6. Mono Line Out: RCA line outputs are used to send the line signal to an external device or a recording device interface.

    Please note: the 5-band EQ and Master Volume DO NOT affect this output. Only adjustments on the BT/USB/SD controller, FX Controller, and the 8 channels effect this output.

  7. AUX input: These RCA inputs are used for connecting stereo audio from any number of line level sources: mixing consoles, samplers, CD players, cassette decks, DAT machines, and other audio interfaces. Mono audio sources can be connected using an RCA "Y" cable connector.

Setup

In this setup there is a powered subwoofer connected to one of the 1/4" Preout jacks and two 8-ohm speakers connected to the 1/4" 8-Ohm Speaker Outputs on the back of the unit.

In this setup there is a powered stage monitor connected to one of the 1/4" Preout jacks and two 8-ohm speakers connected to the 1/4" 8-Ohm Speaker Outputs on the back of the unit.

In this setup there is a PA amp connected to the 1/4" Preout jacks for and two 8-ohm speakers connected to the 1/4" 8-Ohm Speaker Outputs on the back of the unit. The PA amp will facilitate expansion of the system, allowing the signal to be fed to other speakers or a subwoofer(s).

Connections

Once your speakers are hooked up, there are a variety of ways to use the RPM85's many inputs and outputs. Diagrams for the outputs are located on these pages.

Please note: Line level consumer devices such as CD players, tape decks, etc. will require an RCA to 1/4" cable.

Operation

Bluetooth Pairing and Operation

  1. Press the MODE button until you see "disconnected" on the display. The unit will automatically enter into pairing mode.
  2. Ensure that your device is in Bluetooth mode and discoverable.
  3. Find "ROCKVILLE" on your device's list of available Bluetooth connections and select it.
  4. Once successfully paired, the word "connected" will appear on the display.

  5. You can control playback from your device or you can use the BT/USB/SD controls.

    Please note: USB or SD input will override Bluetooth input.

USB/SD Operation

Inserting a USB flash drive or an SD card into the corresponding port/slot will set the RPM85 to USB/SD mode and it will automatically begin to play music. If it does not default to USB/SD mode, press the MODE button to toggle through the modes until you reach USB/SD mode.

Please note: The RPM85 will not recognize USB drives formatted in the NTFS format. Drives must be formatted in the FAT or FAT32 formats. Music file formats accepted are MP3, WAV, and FLAC. Files must be properly formatted; simply changing the file extension to one of the specified file formats will not work.

Music Playback (BT, USB/SD)

  • Mode button: quickly press to cycle through modes (BT/USB/SD). Press and hold to turn off the MP3 module only.
  • Play button: quickly press to play/pause current track.
  • Stop button: quickly press to stop current track (USB/SD only). Long press to access folders on the connected USB drive or SD card.
  • Next button: quickly press to go to next track. Press and hold to raise volume.
  • Previous button: quickly press to go to previous track. Press and hold to lower volume.
  • Repeat button: Quickly press to change reproduction modes (all, folder, single, random); long press starts recording mode (SD only. See recording section below).
  • BT/USB/SD Volume: Use this control to adjust the MP3 output level.

Folder Selection (USB/SD only)

  • Play button: quickly press to play songs in the selected folder.
  • Stop button: Long press to access folders.
  • Next button: quickly press to go to next folder. Once inside of a folder, press to cycle forward through the files in the folder.
  • Previous button: quickly press to go to previous folder. Once inside of a folder, press to cycle through the files in the folder.

Recording (SD only)

  • Play button: starts or pauses the recording.
  • Stop button: stops the recording.
  • Next button: cycle forward through recorded files.
  • Previous button: cycle backwards through recorded files.

Fuse Replacement

  1. Use a screwdriver to release the fuse holder.
  2. Remove the fuse holder.
  3. Remove the fuse.
  4. Remove the new fuse from the compartment.
  5. Place the new fuse into the fuse holder.
  6. Re-insert the fuse holder.

Features/Specifications

  • Individual Level, Effects, Bass, and Treble controls
  • Adjustable effects: Level, Echo, and Delay
  • Built-in Bluetooth playback
  • USB/SD Inputs
  • MP3 (BT/USB/SD) Volume control
  • AUX volume control
  • Master volume control
  • Illuminated five band graphic equalizer
  • Five segment LED power out display
  • Eight balanced XLR inputs
  • Eight 1/4" TS inputs
  • RCA L/R AUX input
  • RCA Mono Line output
  • Two 1/4" Preouts
  • Two 1/4" TS speaker outputs (accepts 4- and 8-ohm speaker loads)
  • +15V phantom power
  • Fan Vent Cooling System
  • Dimensions: 19" x 12" x 7.5"
  • Weight: 25.4 Lbs.

  • RMS Power Output:

    300w x 2 @ 4 Ohm

    225w x 2 @ 8 Ohm

    Program Power Output:

    600w x 2 @ 4 Ohm

    450w x 2 @ 8 Ohm

    Peak Power Output:

    1200w x 2 @ 4 Ohm

    900w x 2 @ 8 Ohm

Troubleshooting

Problem

Solution

No power

 

1. Make sure the unit is plugged in and the power switch is in the ON position.

2. Check that the power cable is plugged in tightly to the unit.

3. Check and replace the fuse if necessary. See fuse replacement diagram on page 15.

No sound

 

1. Check that all appropriate cables are plugged in correctly.

2. Check the Master Volume settings.

3. Check the individual level control of each channel as well as the BT/USB/SD volume control and the AUX volume control.

4. Be sure your microphone(s) is on.

Noise

 

1. Turn down the channel levels one by one. If you don't hear the sound, then the problem is either with the channel or whatever device is plugged into it.

2. Unplug the device(s) to see if the sound disappears.

3. Check that all speaker and other output cables are plugged in correctly.

4. Check the requirements of the connected gear and make sure you are using the proper cables. For ¼″ cables, there are 3 types: instrument, TS (unbalanced), and TRS (balanced).

5. If there is distortion, lower the volume on a specific channel or lower the input device's volume. Setting the 5-band EQ and individual channel bass/treb to high can introduce a distorted signal. Make sure to lower and then properly adjust each setting.

Buzzing sound

 

1. Check the requirements of the connected gear and make sure you are using the proper cables. For ¼″ cables, there are 3 types: instrument, TS (unbalanced), and TRS (balanced).

2. Make sure all cables are securely plugged in. Improperly connected cables can lead to grounding issues which can cause a hum.

Bluetooth pairing fails/no sound

 

1. Check to see that both devices are turned on and that your Bluetooth device is discoverable.

2. Turn both devices off and then on again.

3. Make sure you've selected the proper source.

4. Make sure that the Bluetooth device is within 5 feet of the unit.

5. Move both devices away from other Bluetooth devices, microwaves, wireless routers, and other electronics.

6. Make sure that the unit is not connected to a previously paired device.

7. Make sure that all volume controls are set properly.

No SD/USB playback

 

1. Make sure your SD card or USB flash drive is not damaged.

2. Make sure the SD card or USB drive is formatted as FAT or FAT32. Cards and drives formatted as NTFS are not recognized.

3. Check that the files on the media device are not corrupt.

4. Make sure the files are properly formatted (WAV, MP3, FLAC).

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