Summary of EQplus
Page 1
Operating manual eq plus audio processor.
Page 2: September 2004
September 2004 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- technologies w2ihy eq plus audio processor operating manual.
Page 3: Table Of Contents
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 ......
Page 4: -4-
-4- 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 thes...
Page 5: -5-
-5- front panel controls 1 2 6 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. This switch turns the unit's power on and off. This led...
Page 6: Front Panel Controls
Front panel controls -6- (4) audio input impedance switch (s5) (5) mic in gain (r12) (6) led bar graph , 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. This potent...
Page 7: Front Panel Controls
Front panel controls (7) equalizer on/off switch (s3) (8) equalizer bass (r37) (9) equalizer treble (r38) (10) compressor / downward expander on/off switch (s2) (11) compressor / downward expander compressor (comp) potentiometer (r22) this switch turns the equalizer on and off. When the equalizer is...
Page 8: Front Panel Controls
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 b...
Page 9: Front Panel Controls
Front panel controls (14) effects processor delay potentiometer (r42) (15) effects processor level potentiometer (r47) (16) output level potentiometer (r44) (17) monitor (mon) level potentiometer (r39) this potentiometer works only if the effects processor 3 position toggle switch is selecting eithe...
Page 10: Rear Panel Controls
Rear panel controls 19 18 22 20 23 24 21 22 25 (18) mic select (19) mic input 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) this input uses an 8 pin microphone male connector. The impeda...
Page 11: Rear Panel Controls
Rear panel controls -11- (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...
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-15- rear panel controls (23) audio outputs 1,2 and 3 (24) phones (25) power 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 “...
Page 13: -16-
-16- getting started tutorial before plugging the power transformer into the wall, preset the eqplus controls as indicated: and all off. Urn the 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...
Page 14: Getting Started Tutorial
Getting started tutorial -17- audio input gain (5) monitor level audio input gain 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. Connect a set of stereo headsets into the 1/4 inch “ ” conn...
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-18- getting started tutorial - turn the 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 ...
Page 16: Output
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 d...
Page 17: Internal Wiring
Mic in pin 1 pin 7 internal wiring -20-.
Page 18: -21-
-21- audio out 1/2/3 5 pin male din din connectors shown on side to be soldered gnd ptt - audio + audio balanced output hi-z output low impedance balanced output to low impedance radio 5 pin din audio output connection low impedance unbalanced output to low impedance radio low impedance unbalanced o...
Page 19: Audio Out Cable Wiring
Audio out cable wiring -22- alinco dx77 kenwood ts130/140 ts430/440 ts850/ts870 ts930/940/950 sg2020 k2 japan radio jst-135 jst-245 yaesu ft990/ft992 ft1000mp/m-v + mic ptt gnd icom 735 745/746 756/756 pro 775 781 kachina gnd ptt + mic + mic gnd gnd ptt ptt - mic - mic - mic - mic + mic + mic 8 pin ...
Page 20: Hi-Z
Audio out & power cable wiring drake tr7 drake t4xb collins 32s 1, 32s3 collins kwm2a collins 32v2, 32v3 hallicrafters e.F. Johnson hi-z hi-z kenwood ts520/ts530 ts820/ts830 + audio + audio + audio - audio - audio - audio + audio - audio ptt ptt ptt ptt gnd gnd gnd gnd 4 pin mic connector pin 2 4 pi...
Page 21: Audio Out Cable Wiring
Audio out cable wiring hi-z low z trs balanced output low z unbalnced 1/4” mono connector low z single channel input to computer sound card hi z trs balanced output low-z low-z low-z hi-z low-z - audio - audio - audio - audio + audio + audio + audio + audio gnd gnd gnd gnd shield of cable shield of ...