R-4

4-Channel Audio Recorder

Superior Sound and Extended Recording Time with 40GB Hard Disk Drive 4-Channel Portable Recorder for Professional Use.

  • USB

Superior Sound and Extended Recording Time with 40GB Hard Disk Drive 4-Channel Portable Recorder for Professional Use.

The R-4 brings you a new generation of portable recording. Enjoy superb sound quality. Use the 40GB hard disk drive for extended recording. Record up to four channels at once. Edit waveforms on the recorder itself. All this plus a compact size and light weight that assure outstanding mobility in the field. The Edirol R-4. Gear up for the new generation of portable recording.

  • - 4-Channel Recording
  • - 24-bit/96-kHz Resolution
  • - 40GB Hard Disk Drive
  • - Wave Editing Function

Extended Recording with 40GB Hard Drive

Equipped with a 40GB hard disk drive, the R-4 can record up to 17 hours at maximum sound quality or up to 58 hours at CD quality.

Superior 24-bit/96-kHz Linear Recording

Totally uncompressed recording assures outstanding sound quality. Choose 16-bit or 24-bit quantization and a sampling rate of 44.1 kHz, 48 kHz, or 96 kHz. Save data as WAV files.

Simultaneous 4-Channel Recording

The 4 XLR/Phone combo jacks come with switchable phantom power and give you a choice of MONO, STEREO, STEREO X2, or 4CH recording. In addition, a digital input and output is provided. Four-channel recording gives you exceptional flexibility. For example, you can use mics to capture the ambience of a performance hall while using line input to record the performance itself. Or you can record at several different level settings simultaneously.

On-Board Limiter

Built into the analog stage, the Limiter helps deliver a stable and reliable recording free of clipped noise from sudden input surges.

Built-In Nondirectional Stereo Microphones

The R-4's nondirectional, back electret condenser microphones offer superb transient characteristics and vibration resistance.

Pre-Recording Function

When the REC button is pressed, the current material is appended to a buffer that contains recorded material from a few seconds earlier. This helps prevent missed recording opportunities or sound bites/actualitie at the beginning of a recording.

Five High-Quality Effects

The R-4 lets you tailor the sound during both recording and playback.

Built-In Effects:
3-Band EQ
Graphic EQ
Noise Gate
Enhancer
Comp & DeEsser

L Terminal for Linking a Digital Video Camera

The R-4's L terminal lets you connect a similarly equipped digital video camera to synchronize the camera start/stop while R-4 is recording and playback. Counting the camera's two channels, this configuration gives you a total of six audio channels - a wealth of audio data to get creative with.

Waveform Editing Using Only the R-4

The R-4 is all you need to edit waveforms. Just watch the waveform on the LCD as you edit. Scrubbing playback with the shuttle dial lets you set the edit points precisely by sound.

Waveform Editing Functions:
Trim (Delete)
Divide (Split)
Combine (Append)
Merge (Bounce)

Index Any Point Instantly

A-B repeat function you can set two points and repeatedly play back the material between them.

Easy Playback with the Jog Dial

Use the jog dial to fast-forward or rewind at any of seven speed levels.

Built-In Stereo Speakers

The R-4's built-in speakers make it easy to monitor recorded sound without headphones.

USB 2.0 Terminal Provides a High-Speed Computer Data Link

The USB 2.0 high-speed mode transfers data about 20 times faster than DAT. You can also use the R-4 as a 40GB storage device. Edit R-4 filescan be directly from DAWs and other applications.

Advanced Linking with the EDIROL DV-7DL

A USB cable is all you need to connect directly to an EDIROL DV-7DL Video Editor and exchange files.

Compact Flash Slot

The compact flash slot makes it easy to read or write recorded files. You can use compact flash memory to give data to colleagues or to transfer data to equipment not equipped with an USB interface.

2-Way Power Supply

The R-4 runs on eight AA batteries or with the AC adaptor.

R-4: 4-channel Portable Recorder and Wave Editor

Recorder Part

Channels
4
Signal Processing
AD/DA Conversion: 24 bits
Sampling Frequency: 44.1/48/96 kHz
Data Type
Format: WAV
Sampling Frequency: 44.1/48/96 kHz
Bit Depth: 16/24 bits
Media
Internal Hard Disk Drive (40 GB)
CompactFlash (supports 32 MB to 2 GB)
Recording time
16 bit/44.1 kHz (Stereo): 58 hours
16 bit/48 kHz (Stereo): 53 hours
24 bit/48 kHz (Stereo): 35 hours
16 bit/96 kHz (Stereo): 17 hours

* These recording times are approximate. Your actual results may vary somewhat.
* If more than one recorded file exists, the total recordable time will be less than these.

Audio Input and Output Part

Analog Inputs
Channel 1/2/3/4: XLR type (phantom powered), 1/4 inch TRS phone type (balanced/unbalanced)

Internal Microphone (Stereo)
Analog Outputs
LINE Out: 1/4 inch phone type (L, R), RCA phono type (L, R)
Headphones: Stereo 1/4 inch phone type
Digital Input/Output
Coaxial type (conforms to IEC60958)
Input Impedance
4 k ohms
Nominal Input Level (Variable)
Line Level: -33-- +4 dBu
MIC Level: -60-- -23 dBu
Output Impedance
LINE Out: 950 ohms
Headphones: 10 ohms
Output Level
LINE Out: -10 dBV
Headphones 40 mW + 40 mW
Residual Noise Level
LINE Out: -85 dBu
Digital Data: -90 dBFS
(fs = 96 kHz, Input: 1 k ohms terminated, Level Switch: MIC, Input Level Knob: Min. Input: 4 channels simultaneously)
Total Harmonic Distortion (THD + N)
0.03 %
(fs = 96 kHz, Input: 1 k ohms terminated, Level Switch: LINE, Input Level Knob: Min. Input: 4 channels simultaneously, Band Width: 22 kHz)
Recommended Load Impedance for Headphones
32 ohms
Frequency Response
20 Hz to 40 kHz (0 to -3 dB)
Phantom Power
48+/-2 V / 8 mA (Available 4 Channels simultaneously)

Other Input/Output Part

USB Interface
B Type Connector
Supports USB 1.1 and 2.0 Mass Storage Device Class.
CompactFlash Slot
Supports Type I only.
L Connector
Receiving only.
Supports Start/Stop Sync only.
Not Supports Timecode.

Effect Unit Part

Effect Type
3-BAND SHELVING EQ, 6-BAND GRAPHIC EQ, NOISE GATE, ENHANCER, COMPRESSOR AND DE-ESSER, NO EFFECT

Available to either recording or playing.
Not available to recording in 96 kHz sampling frequency.

Control

Power Switch
Hold Switch
Input Gain Knobs: CH1--CH4
Monitor Level knob
Input Level Switches: CH1/2, CH3/4 (LINE/MIC Level)
Phantom Power Switches: CH1/2, CH3/4
Limiter Switch
Scrub (Value)/Shuttle Dial
Transport Buttons: PREV (REW), NEXT (FWD), STOP, PLAY/PAUSE, REC
Marker Buttons: CLEAR, PREV, NEXT, MARK
Function Buttons: WAVE EDIT, EFFECTS, SYSTEM
A-B Repeat Button
Display Button

Others

Display
128 x 64 dots Graphic LCD (backlit LCD)
Power Supply
AC Adaptor (PSB-1U), Alkaline dry battery LR6 (AA) type x 8, or Nickel Hydrogen battery (HR15/51) x 8
Power Consumption
1.2 A
Accessories
Owner's Manual
AC Adaptor (PSB-1U)
USB cable
Carrying Case

Size and Weight

Width (W)
240 mm9-1/2 inches
Depth (D)
217 mm8-9/16 inches
Height (H)
77 mm3-1/16 inches
Weight
1.7 kg3 lbs. 12 oz.
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All specifications and appearances are subject to change.

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