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EQplus
AUDIO
PROCESSOR
OPERATING MANUAL
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EQplus AUDIO PROCESSOR OPERATING MANUAL September 2004 W2IHY TECHNOLOGIES Julius D. Jones 19 Vanessa Lane Staatsburg, N.Y. (12580) (845) 889-4253 E-mail: Julius@W2IHY.COM Home Page: http:// www.w2ihy.com c 2004 W2IHY, ALL RIGHTS RESERVED -2-
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TABLE OF CONTENTS Introduction ......................... 4 Front Panel Controls .......... 5 - 9 Rear Panel Controls ............10 - 11 Schematic (Front Panel) .......12 - 13 Schematic (Rear Panel) .......14 Rear Panel Controls ...........15 Getting Started Tutorial .......16-19 Internal Wiring .................... 20 Audio Out Cable wiring ...... 21 - 24 -3-
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INTRODUCTION EQplus AUDIO PROCESSOR The EQplus is the next generation of audio processing equipment from W2IHY Technologies. The EQplus was designed to be directly attached to the world famous W2IHY 8 Band EQ. The EQplus provides features such as Audio Compression, Downward Expansion, Effects and connectivity to 3 radios. All these features, and more, were designed in a way that makes the EQplus easy to use. Extensive testing was done by amateurs on many different radios on AM, FM
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FRONT PANEL CONTROLS 10 8 9 7 11 12 16 17 15 13 4 3 5 14 1 This section describes each of the controls on the front panel. You should read through this section now. Some of the descriptions will be more meaningful after you first work through the Getting Started Tutorial. (1) Power On/Off Switch (S1) This switch turns the unit's power on and off. (2) Power on LED (LED1) This LED goes on when power is on in the unit. (3) Audio Input Mic PWR (Power) Switch (S6)
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FRONT PANEL CONTROLS (4) Audio Input Impedance Switch (S5) This 3 position toggle switch is used to change the input impedance of the Mic and Aux Inputs (19,20 & 21). Input Impedances of 200 ohms, 600 ohms and 50K ohms ( HI-Z)may be selected. (5) Mic In Gain (R12) This potentiometer, when turned clockwise, can increase the Audio Input signal levels up to about +40dBv. The mic gain should be changed while speaking into the microphone, until 3 or 4 gr
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FRONT PANEL CONTROLS (7) Equalizer On/Off Switch (S3) This switch turns the Equalizer on and off. When the equalizer is off, adjusting the bass and treble controls have no effect on the output audio. (8) Equalizer Bass (R37) This rotary potentiometer works only when the Equalizer Switch (7) is on. Turning this control clockwise increases the amount of bass boost. Turning this control counterclockwise decreases the amount of
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FRONT PANEL CONTROLS Incoming signals will have up to 20dB of compression introduced. The EQplus compressor circuitry contains a limiter that is preset at the factory. The limiter is set to limit the processed signals to 375 millivolts (-9 dB). When this level is reached the 1-st yellow LED on the bar graph will be on and the top Red (Limiting) LED will turn on. Additional increases in audio level, using either the Audio Input Gain Potent
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FRONT PANEL CONTROLS (14) EFFECTS PROCESSOR DELAY Potentiometer (R42) This potentiometer works only if the Effects Processor 3 position toggle switch is selecting either effect 1 or effect 2. The Delay control, when rotated clockwise increases, by up to about 80 milliseconds, the time that audio waveform is delayed. The delayed waveform is then mixed with the original non delayed waveform. The mixed waveform is next sent to the
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REAR PANEL CONTROLS 25 21 22 18 20 22 19 23 24 (18) MIC SELECT This three position switch selects the YAESU, KENWOOD or ICOM microphone plugged into the 8 pin Mic Input (19). (Other microphones supported with mic adapters) (19) MIC INPUT This Input uses an 8 Pin microphone male connector. The impedance of this input is set by the Audio Input 3 position toggle switch (4). Do not use this connector when RCA Mic
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REAR PANEL CONTROLS (20) MIC INPUT This RCA female connector is used as a microphone input. This connector works independent of the Mic Select switch (18) and may be used for another audio input source such as a microphone. The impedance of this input is set by the Audio Input 3 position toggle switch (4). (21) AUX INPUT This 5 Pin Din connector allows audio to be brought into the EQplus from an external d
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REAR PANEL CONTROLS (23) AUDIO OUTPUTS 1,2 and 3 The audio output and PTT outputs of the EQplus uses these 5 pin DIN’s. When the Audio Output Rotary switch (22) is in the “1” position, audio is active at Audio Output 1. When the Audio Output Rotary switch (22) is in the “2” position, audio is active at Audio Output 2. When the Audio Output Rotary Switch (22) is in the “3” position, audio is active at Audio Output
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GETTING STARTED TUTORIAL Before plugging the power transformer into the wall, preset the EQplus controls as indicated: Power , Equalizer, Compressor/ Downward and Effects Processor all off. Connect your microphone into the Mic In rear connector. Turn the Mic Select to select the microphone you will be using. If you are not using a mic but an external audio source like a W2IHY EQ, connect your audio source into the Aux Input. (If you are using a W2IHY EQ, then connect a cable b
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GETTING STARTED TUTORIAL Audio Input Gain (5) so that 2 or 3 Green Bar Graph LED’s light up. This may require adjusting both the Mic Gain control on the 8 Band EQ and the Audio Gain control on the EQplus. Using The EQplus headphone (PHONES) Monitor Connect a set of stereo headsets into the 1/4 inch “Phones” Connector located in the back of the EQplus. Talk into the mic to hear audio coming from the EQplus. Adjust the headset volume by turning the front panel Monitor Level cont
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GETTING STARTED TUTORIAL - Turn the Compressor control (11) fully counter clockwise. This setting passes uncompressed audio thru the compressor. Turning the compressor control clockwise increase the amount of compression. Set the compression to the desired level. You can turn the compression levels up to a point where talking into the mic causes the RED Limiting LED to come on . The Red LED coming on indicates that additional increases in audio signal
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GETTING STARTED TUTORIAL The Level control (15) sets the amplitude that the audio delayed by the Effects Processor combines with the non delayed audio. Through experimentation, the user can find what Effects Processor Delay and Level settings are best for their voice characteristics. Both the Delay and Level controls have detents half way through the rotation of the control. The detents may be used as a starting point for adjusting the Effects Processor. Controls. The Effects Pro
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INTERNAL WIRING PIN 7 PIN 1 MIC IN -20-
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AUDIO OUT CABLE WIRING 5 PIN DIN AUDIO OUTPUT CONNECTION + Audio Balanced AUDIO OUT 1/2/3 Output - Audio 5 Pin Male DIN Hi-Z Output PTT Din connectors shown on side to be soldered Gnd Low Impedance Balanced Output to Low Impedance Radio + Audio Balanced Output AUDIO OUT 1/2/3 - Audio 5 Pin Male DIN PTT Din connectors shown on side to be soldered Gnd (Audio cable shield) Low Impedance Unbalanced Output to Low Impedance Radio Unbalanced + Audio Output AUDIO OUT 1/2/3 5 Pin Male
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AUDIO OUT CABLE WIRING + Mic 8 Pin Mic Connector Pin 8 Japan Radio - Mic 8 Pin Mic Connector Pin 7 JST-135 JST-245 PTT Yaesu 8 Pin Mic Connector Pin 6 FT990/ft992 Shield of Cable Gnd FT1000MP/M-V 8 Pin Mic Connector Pin 5 Alinco DX77 + Mic 8 Pin Mic Connector Pin 1 Kenwood - Mic TS130/140 8 Pin Mic Connector Pin 7 TS430/440 PTT TS850/TS870 8 Pin Mic Connector Pin 2 TS930/940/950 SG2020 Gnd Shield of Cable 8 Pin Mic Connector Pin 8 K2 + Mic 8 Pin Mic Connector Pin 8 - M
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AUDIO OUT & POWER CABLE WIRING + Audio - Audio DRAKE T4XB COLLINS 32S 1, 32S3 HI-Z PTT COLLINS KWM2A Shield of Cable GND + Audio 2 Pin Mic Connector Pin 1 - Audio COLLINS 32V2, 32V3 HI-Z Hallicrafters PTT 2 Pin Mic Connector Pin 2 E.F. Johnson Shield of Cable GND 2 Pin Mic Connector Spring/Case + Audio 4 Pin Mic Connector Pin 1 - Audio DRAKE TR7 PTT 4 Pin Mic Connector Pin 2 Shield of Cable GND 4 Pin Mic Connector Pin 3 + Audio 4 Pin Mic Connector Pin 1 - Audio 4 PIN TEN TEC PTT EXCEPT ORION 4
