OPERATION MANUAL Introduction
Thank you for selecting the ZOOM RFX-300 (hereafter simply called the "RFX-300"). The RFX-300 is a sophisticated multi-effect processor with the following features and functions. Ideal for use with a multi-track recorder A total of 22 high-quality preset effects using a sampling frequency of 44.1 kHz and 18-bit A/D and D/A converters are built in. This includes reverb effects such as Hall, Room, Plate, and Ambience, delay/modulation type effects as well as combination effects, mixdown effects for changing the overall mood of a song. Any effect can be called up quickly and without fuss. The unit is designed to be especially useful for recording and mixdown on a multi- track recorder. Easy operation The main parameters of preset effects can be adjusted directly with convenient knobs on the top panel. This allows quick fine-tuning for optimum sound. Integrated tap input function Tap input lets you set time-based parameters simply by tapping a key in the desired interval. This makes it a snap to match delay time or modulation rate to the tempo of a song. Versatile input/output configuration The inputs and outputs of the RFX-300 accommodate both standard phone plugs and RCA type phono plugs. Electronic instruments, multi-track recorders, various audio components and a wide range of other equipment can be connected without hassle. The phone jack input is equipped with a gain switch, allowing connection of microphones as well. You can use the RFX-300 as a portable vocal effect device or as a microphone preamp for recording. Dual power supply design The dual power supply principle allows the unit to be powered from an AC adapter or six IEC R6 (size AA) batteries. This is convenient for example when using the unit on stage. Please take the time to read this manual carefully so as to get the most out of your RFX300 and to ensure optimum performance and reliability. Retain this manual, the warranty card and all other documentation for future reference.

Contents

Safety Precautions/Usage Precautions Controls and Features Top Panel Rear Panel Getting Connected To Operate the Unit on Batteries Turning the Unit On Adjusting the Sound of an Effect Using the Bypass Function Effects and Parameters Troubleshooting Specifications 6 7
Safety Precautions/Usage Precautions

Safety Precautions

In this manual, symbols are used to highlight warnings and cautions for you to read so that accidents can be prevented. The meanings of these symbols are as follows: This symbol indicates explanations about extremely dangerous matters. If users ignore this symbol and handle the device the wrong way, serious injury or death could result. This symbol indicates explanations about dangerous matters. If users ignore this symbol and handle the device the wrong way, bodily injury and damage to the equipment could result.

Caution Caution

Environment Avoid using your RFX-300 in environments where it will be exposed to: Extreme temperature High humidity or moisture Excessive dust or sand Excessive vibration or shock

Warning

Caution
Handling Since the RFX-300 is a precision electronic device, avoid applying excessive force to the switches and buttons. Also take care not to drop the unit, and do not subject it to shock or excessive pressure. Alterations Never open the case of the RFX-300 or attempt to modify the product in any way since this can result in damage to the unit. Connecting cables and input and output jacks You should always turn off the power to the RFX-300 and all other equipment before connecting or disconnecting any cables. Also make sure to disconnect all cables and the AC adapter before moving the RFX300.
Please observe the following safety tips and precautions to ensure hazard-free use of the RFX-300. Power requirements Since power consumption of this unit is fairly high, we recommend the use of an AC adapter whenever possible. When powering the unit from a battery, use only an alkaline type. [AC adapter operation] Be sure to use only an AC adapter which supplies 9 V DC, 300 mA and is equipped with a "center minus" plug (Zoom AD-0006). The use of an adapter other than the specified type may damage the unit and pose a safety hazard. Connect the AC adapter only to an AC outlet that supplies the rated voltage required by the adapter. When disconnecting the AC adapter from the AC outlet, always grasp the adapter itself and do not pull at the cable. When not using the unit for an extended period, disconnect the AC adapter from the AC outlet. [Battery Powered Operation ] Use six IEC R6 (size AA) 1.5V batteries (alkaline). The RFX-300 cannot be used for recharging. Pay close attention to the labelling of the battery to make sure you choose the correct type. When not using the unit for an extended period, remove the batteries from the unit. If battery leakage has occurred, wipe the battery compartment and the battery terminals carefully to remove all remnants of battery fluid. While using the unit, the battery compartment cover should be closed.

Usage Precautions

Electrical interference For safety considerations, the RFX-300 has been designed to provide maximum protection against the emission of electromagnetic radiation from inside the device, and protection from external interference. However, equipment that is very susceptible to interference or that emits powerful electromagnetic waves should not be placed near the RFX-300, as the possibility of interference cannot be ruled out entirely. With any type of digital control device, the RFX-300 included, electromagnetic interference can cause malfunctioning and can corrupt or destroy data. Care should be taken to minimize the risk of damage. Cleaning Use a soft, dry cloth to clean the RFX-300. If necessary, slightly moisten the cloth. Do not use abrasive cleanser, wax, or solvents (such as paint thinner or cleaning alcohol), since these may dull the finish or damage the surface.
Please keep this manual in a convenient place for future reference.

ZOOM RFX-300

Controls and Features

Top Panel

PEAK indicator
Lights up in red when the signal is approaching the clipping level.

POWER indicator

When the RFX-300 is on, this LED indicator is lit. When the unit is powered from the batteries, the indicator begins to flash when battery voltage becomes low.

INPUT control

Adjusts the signal input level.

OUTPUT control

Adjusts the signal output level.
TIME/ADJUST indicator EFFECT selector
Together with the BANK keys ( ), this selector allows the user to choose one of 22 different effects. This LED indicator shows which parameter can be adjusted with the TIME/ADJUST control ( ). TIME/ADJUST control Allows adjustment of effect parameters.

BYPASS key

Sets the unit to the bypass mode, where the effects are temporarily turned off.

BANK keys

Serve to select the effect bank A or B.

MIX control

Adjusts the balance between original sound and effect sound, or adjusts a second effect parameter.

VARIATION/TAP key

Serves to switch among variations of an effect and allows "tap input" of time based parameters by detecting the interval in which the key is operated.

VARIATION/TAP indicator These LED indicators show the function of the VARIATION/TAP key ( ).

Rear Panel

DC9V jack
When powering the unit with the optional AC adapter, the cable from the adapter must be plugged in here.

OUTPUT jacks

Stereo output for RCA type phono plugs.

INPUT jacks

Stereo input for RCA type phono plugs. This input cannot be used at the same time as the phone INPUT jacks ( ).

LINE/MIC switch

Selects the gain for the signal supplied to the phone INPUT jacks ( ).
Connection to a linelevel device such as a synthesizer

POWER switch

Serves to turn the unit on and off.
Stereo output for phone plugs.
Phone type input which can handle signals ranging from microphone level to line level. The signal from instruments with high-impedance outputs such as electric guitar should be routed through a preamp or guitar effect.

Microphone connection

Getting Connected

Recording (1) (Insert)

Rhythm machine, synthesizer or similar

Microphone

Guitar effect

INPUT L/MONO

This is an example for connecting the RFX-300 between a multitrack recorder (cassette MTR, MD MTR or similar) and a sound source (microphone, guitar, rhythm machine or similar). Monaural sound sources should be connected to the INPUT L/MONO jack. Stereo sources should be connected to the INPUT L and R jacks. In this configuration, the signal from the microphone or instrument can be sent to the input of the multi-track recorder after effect processing. The OUTPUT OUTPUT R L balance between original sound and effect sound is INPUT AC adapter R DC9V adjusted at the RFX-300.

Guitar

RFX-300
Recording (2) (Send/Return)
This is an example for connecting the RFX-300 to the send/return jacks of a multi-track recorder. Connect the send jack of the MTR to the INPUT L/MONO jack of the RFX-300, and connect the OUTPUT L/R jacks of the RFX-300 to the return jacks (or the stereo line input jacks) of the MTR.

R SEND

OUTPUT R INPUT L/MONO OUTPUT L DC9V

AC adapter

RETURN L
In this configuration, the RFX-300 should be set its outputs send only the effect sound, and the balance between original sound and effect sound is adjusted at the multi-track recorder. If the multi-track recorder is equipped with stereo send jacks, it is also possible to input a stereo send signal to the RFX-300.

Mixdown

RCA type phono cable
INPUT L R L OUTPUT R DC9V

L INPUT R

MASTER OUTPUT L R

MD recorder

This is an example for processing the master L/R output of a multi-track recorder with the RFX-300 and performing mixdown (mixing multiple tracks onto two final stereo tracks) on a master recorder (MD, DAT, or stereo cassette). The balance between original sound and effect sound is adjusted at the RFX-300.

Live Performance

R L OUTPUT L R INPUT L/MONO INPUT L R

Keyboard AC adapter

DC9V L R
This is an example for connecting an instrument or microphone to the RFX300 and using it as a single effect device during a live performance.

Speakers

PA mixer
To Operate the Unit on Batteries
Besides using an AC adapter, the RFX-300 can also be powered from six IEC R6 (size AA) alkaline batteries. When the unit is running on battery power, the POWER indicator on the top panel begins to flash when the batteries are nearing depletion. In such a case, replace the batteries as soon POWER LED as possible.
Rear of RFX-300 Six IEC R6 (size AA) batteries
Getting Connected / To Operate the Unit on Batteries / Turning the Unit On
Tab Battery compartment cover

Turning the Unit On

Verify that the AC adapter, sound source, and playback equipment are correctly connected to the RFX-300. Turn on the system in the following order: sound source RFX-300 playback equipment. The INPUT control and OUTPUT control of the RFX-300 and the volume control of the playback equipment should be set to minimum before turning the system on. Turn up the INPUT control to adjust the input level. When the sound source output is at maximum, the PEAK indicator should flash occasionally.

BATTERY:R6(SUM-3)or"AA"SIZEx6
Open Adjacent batteries are inserted with opposite polarity.
Adjust the OUTPUT control and the volume control of the playback equipment to obtain a suitable playback volume.
Use the BANK keys and the EFFECT selector to choose the desired effect. When the BANK key A is lit, the effects printed in the upper line are selected. When the BANK key B is lit, the effects printed in the lower line are selected.
FLG+REV DELAY+REV POWER MIX COMP+DETUNE WIDE MIX BOOST MIX ROTARY

BANK A Lit

VOCAL MIX
EFFECT selector Effect switching BANK B Lit
Adjusting the Sound of an Effect

To Make the Adjustment

The sound of effects provided by the RFX-300 can be modified by using the following controls.

TIME/ADJUST control

Adjusts the main effect parameter. Which parameter this is depends on the currently selected effect.
Adjusts the mixing ratio of original sound and effect sound, and also serves to adjust other parameters. Which parameter this is depends on the currently selected effect. For information on effects and adjustable parameters, please refer to page 7.
When TIME indicator is lit
The control can be used to adjust a time-based parameter such as delay time, reverb time, etc.
When ADJUST indicator is lit Lit
The control can be used to adjust another parameter.
This key is used to select effect variations and it also serves for the "tap input" function by which the unit detects the key-press interval. The key operation depends on the currently selected effect.
When VARIATION indicator is lit
When TAP indicator is lit
Each push of the key toggles between variation 1 (VARIATION/TAP key is out) and variation 2 (VARIATION/TAP key is lit).
Time-based parameters such as delay time or flanger modulation cycle can be easily input by tapping the key in the desired interval (tap input).
Flashes to indicate input interval Variation 1 Variation 2 (1) After TAP key is pressed for the first time. (2) Time until TAP key is pressed for the second time is measured, and the parameter is set accordingly.
If the key-press interval is larger than the maximum possible setting for the current parameter, the parameter is set to the maximum value of the tap input range.
Using the Bypass Function
The effects of the RFX-300 can be temporarily turned off. This is called the bypass mode.
To set the RFX-300 to the bypass mode, press the BYPASS key.
level depends on the MIX control position.

In bypass mode.

The RFX-300 has two different bypass states, depending on the currently selected effect. (For information on which effects use which bypass type, please refer to pages 7 - 11.) WET MUTE In this condition, only the effect sound is muted. The effects (A1 - A9) using the connection as described in "Recording (2) (Send/Return)" on page 4 operate in this way. The original sound output

MIX control minimum

MIX control maximum
Original sound is No sound is output output unprocessed DRY THRU The original sound is output without any processing. The setting of the MIX control has no effect.
To return the RFX-300 to the normal state, press the BYPASS key once more.

Effects and Parameters

This section explains all effects and adjustable parameters.

Table of Effects

The following table shows the effect parameters that are adjustable with the VARIATION/TAP key, TIME/ADJUST control, and MIX control for each effect.

PARAMETER EFFECT

VARIATION/TAP
VARIATION Warm / Clear Warm / Clear Warm / Clear Warm / Clear Delay Time Up / Down Warm / Clear Rate Rate Compressor / Limiter Vocal / Instrument Rate Combo / Stack Compressor / Limiter Delay Time Warm / Clear Flanger Rate Delay Time Short Reverb / Long Reverb Short Reverb / Long Reverb Short Reverb / Long Reverb Short Reverb / Long Reverb

TIME/ADJUST

Reverb Time Reverb Time Reverb Time Reverb Time Delay Time Shift Depth & Rate Rate Rate Release Threshold Rate Presence Comp Threshold Delay Time Chorus Mix Flanger Rate Delay Time Intensity Intensity Intensity Intensity
Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Dry-Wet Balance Threshold Enhance Intensity Depth Detune Mix Comp Threshold Reverb Mix Reverb Mix Reverb Mix Reverb Mix Reverb Mix Reverb Mix Reverb Mix

BYPASS

Wet Mute Wet Mute Wet Mute Wet Mute Wet Mute Wet Mute Wet Mute Wet Mute Wet Mute Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru Dry Thru
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11
HALL ROOM PLATE AMBIENCE DELAY PITCH CHORUS FLANGER PHASER COMP/LIMITER MIC SIMULATOR ROTARY CABINET SIM COMP+DETUNE COMP+DELAY CHORUS+REV FLG+REV DELAY+REV POWER MIX WIDE MIX BOOST MIX VOCAL MIX

Effect Details

Reverb
This group comprises high-quality stereo reverb effects. The two available variations are a basic sound (Warm) suitable for vocals and general instrumentation, and a clear sound (Clear) suitable mainly for drums and percussion. Effects of this section are best for use in configurations such as shown in the connection example "Recording (2) (Send/Return)" on page 4.

Effect

Description
This effect simulates the acoustic characteristics of a large concert hall.

A1 A2 A3 A4

Common to

HALL ROOM PLATE AMBIENCE

This effect simulates the acoustic space of a medium-size live venue. This effect simulates the so-called "plate reverb" (as produced by a pickup mounted to a large, free-hanging iron plate). Especially the "Clear" variation is great for percussion. Adds natural ambience to the sound source without changing the basic sound character.

VARIATION

(Warm / Clear)
Selects reverb variation (Warm or Clear).

Reverb Time

Adjusts reverb time.

Dry-Wet Balance

Adjusts the balance between original sound and effect sound.

Wet Mute

In bypass mode, only the effect sound is muted.

TIME ADJUST MIX

[Setting Example]

VARIATION TAP

ADJUST
HALL Natural sounding hall reverb that can be used both for The MIX parameter setting in this example male and female vocals. is for the send/return onfiguration.
PLATE Great for percussion. This setting gives a The MIX parameter setting in this example bright, lively reverb. is for the send/return onfiguration.

Single Effects

This section comprises various single effects to alter delay, modulation, and dynamics. Effects of this section are best for track recording in configurations such as shown in the connection example "Recording (1) (Insert)" on page 4. Effects A5 - A9 can also be used in configurations such as shown in "Recording (2) (Send/Return)".
Stereo delay with a maximum delay time of 700 ms. The delay time can be easily matched to the tempo of a song by performing tap input with the TAP key.

(Delay Time)

Serves for tap input of delay time.

Delay Time

Serves for knob adjustment of delay time.
This is a pitch effect with a wide range, from slight pitch detuning to +-1 octave pitch shift.

(Up / Down)

Selects the pitch effect variation (upward pitch shift or downward pitch shift).
Controls the amount of pitch shift (detune 3 steps to +-12 semitones).

CHORUS

This is a stereo chorus effect that periodically shifts the pitch up or down and adds a wide spatial dimension to the sound. Two variations are available: soft sound (Warm) and clear sound (Clear).

Selects the chorus variation (Warm or Clear).

Depth & Rate

Simultaneously controls the modulation depth and rate.

FLANGER

This effect adds a slightly delayed component to the original sound while periodically varying the delay time, which produces an undulating sound. The basic principle resembles the chorus effect, but since the effect also uses feedback, the resulting sound has a strong and unique character that is typical of a flanger.

(Rate)

Serves for tap input of modulation cycle.
Serves for knob adjustment of modulation cycle.

TIME VARIATION TAP

ADJUST MIX
Produces a jet type sound with distortion.

PHASER

This effect adds a phase shifted component to the original sound while periodically varying the phase of the effect sound, thereby producing a surging sound. It is especially suitable for electric guitar and electric piano.
Suitable for chord backing by electric guitar and electric piano.

COMP/LIMITER

This effect processes the dynamic range of the sound, for keeping the signal level within a certain range. There are two variations: the compressor which raises signals below a certain threshold level and attenuates signals above a certain level, and the limiter which only attenuates signals above a certain level.

(Compressor/Limiter)

Release

Threshold

Adjusts the threshold level where the compressor/limiter becomes active.

Dry Thru

In bypass mode, only the unprocessed original sound is output.
Selects the effect Adjusts the time lag between the point variation (Compressor where the signal falls below the threshold or Limiter). level and the end of compressor action. Should be short for single instruments and longer for ensembles.
Compressor with pronounced attack.
Limiter for preventing sudden level changes.

Microphone simulator

When recording vocals or acoustic instruments with a dynamic microphone, this effect can be used to achieve characteristics resembling those of a high-quality condenser mike. The simulator also provides limiter and enhancer effects specially geared for microphone recording. Effects of this section are best for track recording in configurations such as shown in the connection example "Recording (1) (Insert)" on page 4.

This effect allows you to achieve condenser mike characteristics while using economical dynamic microphones. The available variations are "Vocal" with a full and well-rounded midrange and natural treble, and "Instrument" with the delicate sound of a condenser mike.

MIC SIMULATOR

(Vocal/Instrument)
Selects the variation (Vocal or Instrument).
Adjusts the limiter sensitivity.
TIME VARIATION TAP ADJUST MIX

Enhance

Adjusts the high-range enhancer depth.
This setting gives depth and impact to rock vocals.
Suitable for recording the natural sound of an acoustic guitar.

Guitar & Organ

Comprises a rotary effect that is essential for great organ sound, as well as a speaker cabinet simulator and other effects suitable for electric guitar and organ.
Simulates a rotary speaker turned by mechanical means. The rotation speed can be varied by tap input.

ROTARY

Serves for tap input of rotation speed.
Serves for knob adjustment of rotation speed.

Intensity

Adjusts the depth of the effect sound.

CABINET SIM

This effect adds a speaker cabinet character to the sound of an electric guitar that has been processed by distortion effects or a multi-effect device, resulting in realistic amplifier sound. The available variations are "Combo" (combo amplifier sound) and "Stack" (stack amplifier sound).

(Combo/Stack)

Selects the effect variation (Combo or Stack).

Presence

Adjusts the level of the ultra-high range.
Adjusts the depth of the cabinet effect.
This setting is optimized to produce a stack amplifier sound for a signal that has been processed by a distortion effect.

Multi-Effects

Using a combination of multiple effects like a single effect is called multi-effect operation. This is most suitable when the RFX-300 is used as an insert effect device during recording or as a stand-alone effect during a live performance.
This is a combination of a compressor that evens out sound level differences and a detuning effect with a slightly pitch-shifted component added to the original sound.

COMP+DETUNE

Selects the compressor variation (Compressor or Limiter).

Comp Threshold

Adjusts the threshold for the compressor/limiter action.

Detune Mix

Adjusts the balance between original sound and effect sound (detune).

[Setting Example] This yields a "double tracking" effect that is great for

pop songs.

COMP+DELAY
This is a combination of compressor and delay. The effect is most suitable for vocals with echo.

CHORUS+REV

This is a combination of chorus and reverb, suitable for example for chord backing by acoustic guitar or electric piano.

(Warm/Clear)

Selects the effect variation (Warm or Clear tone).

Chorus Mix

Adjusts the chorus mix amount.

Reverb Mix

Adjusts the reverb mix amount.

FLG+REV

This is a combination of flanger with strong modulation and reverb. It can be used for example with electric guitar leads, arpeggios, or for other sound effects.

(Flanger Rate)

Serves for tap input of flanger modulation rate.

Flanger Rate

Serves for knob adjustment of flanger modulation rate.
This setting gives light, floating feeling that is great for playing arpeggios.

DELAY+REV

A great combination of effects for vocals. Can also be used for lead guitar and electric piano solos.

Mixdown Effects

These effects are best suited for mixdown of multiple MTR tracks to stereo or for mastering (fine-tuning the sound and level of a final 2-track mix). They should be used in configurations such as shown in the connection example "Mixdown" on page 4.
Effect POWER MIX VARIATION/TAP
This effect gives strong bass and adds a powerful punch to the sound. It is most suitable for rock numbers. The reverb sound variations are "Short Reverb" and "Long Reverb".
(Short Reverb/Long Reverb)
Selects the reverb variation (Short Reverb or Long Reverb).
Adjusts the bass emphasis.
[Setting Example] Heavy rock sound with strong drive.

WIDE MIX VARIATION/TAP

Mixdown effect which stresses the stereo spread. Suitable especially for songs with emphasis on instrumental sound.
Adjusts the left/right spread.
Adjusts the reverb sound mixing ratio.
[Setting Example] Prominent ambience in addition to

reverb components.

BOOST MIX VARIATION/TAP
Mixdown effect with tight low end and lively highs, ideal for rock and pop. Also allows compensation for losses at the extreme ends of the frequency spectrum that tend to occur when recording on a cassette MTR.
Adjusts the low-range/ high-range volume.
[Setting Example] Produces the sound of live recording.

VOCAL MIX VARIATION/TAP

This mixdown effect achieves a warm and rich vocal sound by stressing the midrange and adding plate type reverb. Optimal for ballads and other songs with emphasis on the vocals.

Adjust the band level to emphasize vocal clarity and timbre.
[Setting Example] A setting for ballads which uses reverb to
stress the appeal of vocals.

Troubleshooting

Symptom Check
Is specified AC adapter connected and power switch set to ON? Is sound source connected correctly to INPUT jacks and are OUTPUT jacks connected correctly to playback equipment? Are all shielded cables used for the connection okay?

Remedy

Follow the instructions in "Turning the Unit On". Follow the instructions in "Getting Connected". Try replacing the shielded cables.
No sound or very low volume.
Is the amplifier switched on? Is the volume at the sound source and amplifier set to proper position? Is INPUT control or OUTPUT control turned down? Are the batteries exhausted? Is MIX control set to maximum in bypass mode? Is input signal level too high?
Turn amplifier on. Adjust volume of sound source. Adjust INPUT control and OUTPUT control. Replace batteries. Adjust MIX control. Adjust volume of sound source and set INPUT control to a suitable position. Phone jack input and RCA type phono jack input cannot be used simultaneously. Connect a sound source only to one input. Set LINE/MIC switch to LINE. Adjust MIX control to achieve proper balance between direct sound and effected sound. Cancel bypass mode.
Input sound breaks up or is distorted.
Is input signal supplied both to phone jacks and RCA type phono jacks? Is LINE/MIC switch set to MIC? Is MIX control turned fully to direct sound side? Is unit set to bypass mode?

No effect sound

Specifications
Number of Effect Programs Sampling Frequency Analog/Digital Conversion Digital/Analog Conversion DSP Inputs L/MONO, R Input impedance: Rated input level: L, R Input impedance: Rated input level: Standard monaural phone jack x kilohms -10 dBm (Line) -56 dBm (Mike) RCA type phono jacks 22 kilohms -10 dBm 11 x 2 banks 44.1 kHz 18 bit, 64 times oversampling 18 bit, 8 times oversampling ZOOM original ZFx-2 Power Requirements Supplied AC adapter 9 V DC, center negative (AD-0006) Battery: IEC R6 (size AA) x 6 Battery life: approx. 10 h (with alkaline batteries) 168 (W) x 170 (D) x 59 (H) mm 550 g Outputs L, R L, R Output load impedance: Max. output: standard monaural phone jacks RCA type phono jacks 100 ohms or more +6 dBm

Dimensions Weight

* 0 dBm = 0.775 Vrms * Design and specifications subject to change without notice.

ZOOM CORPORATION

* 0 dBm = 0.775 Vrms * Design and specifications subject to change without notice.

Espaol Italiano

ZOOM CORPORATION
NOAH Bldg., 2-10-2, Miyanishi-cho, Fuchu-shi, Tokyo 183-0022, Japan PHONE: +81-42-369-7116 FAX: +81-42-369-7115 Printed in Japan RFX-300-5050