 |
 |
 |
Affordable Audio Technology for Amateur Radio Applications |
|
|
It’s time to put The Plus in your transmit audio!
|
|
|
|
Audio Demos Please take a few moments to listen to these awesome audio demonstrations. If a picture is worth a thousand words, these recordings are worth a thousand pictures. Each operator is using a W2IHY 8-Band EQ/Noise Gate and EQplus. |
|
WV4R Puts Loud, Clean Audio In Your Face With its wide range of adjustability, the W2IHY 8-Band/EQplus combination delivers the transmit audio characteristics you want to achieve. This highly articulate, crystal-clear signal is from Murf, WV4R using a $10 microphone. |
|
EQplus 101. Required Listening In this example, WV4R turns off the W2IHY audio processing stages and turns them back on. Listen to the fascinating procedure and the stunning results. |
|
EQplus Creater, Julius Jones, Demonstrates His New Product Listen to EQplus designer, W2IHY in QSO on 20 meters. Julius is transmitting on an ICOM 756 PRO II with a Heil Goldline Pro microphone. Notice the dramatic improvement in signal to noise (talk power) when the EQplus compressor is activated. Our thanks to N4FZ for making this recording. |
|
Are You A Believer? W6OBB is This high-quality signal from W6OBB is pleasing and robust. Art’s audio is a listening treat for everyone on the receiving end. His Yaesu MD-200 microphone drives W2IHY processing gear which drives an ICOM 7800. Recording courtesy of NU9N. |
|
Big Sig From Little Rig We couldn’t believe our ears when K4APO sent this recording. Walter’s audio is a thrilling example of what is possible when using W2IHY audio processing on a radio with relatively narrow transmit bandwidth. The microphone is a Heil Goldline Pro and the rig is an ICOM 706 MKIIG. We’ve never heard a 706 sound this good …and … this BIG! |
|
It’s Off. It’s On. It’s Powerful! This recording of W8MW demonstrates the night and day difference between unprocessed microphone audio and audio that’s enhanced by W2IHY processing. Mike is using an ICOM 756 PRO with an inexpensive Radio Shack dynamic microphone. As you’ve heard from these examples, W2IHY processing lets you customize transmit audio for your operating interests and personal taste. And it’s easy to change your audio personality in an instant. From rich, wideband ragchew audio … to penetrating, ultra-loud DX audio … to anything in between. Uncommonly clean, loud audio sets W2IHY processing apart from the rest. In a word, outstanding!
|
|
|
Introduction
We said it years ago and it’s still true. If you could choose only one piece of transmit audio processing equipment, it should be a W2IHY 8-Band EQ/Noise Gate.
Today’s audio technology includes hundreds of signal-shaping techniques. Among these, some deliver genuine “bang for the buck” while others have limited value in amateur radio application. W2IHY did his homework to bring you the best and eliminate the rest. After years of R&D, plus user input, plus prototyping, plus on-air evaluations … we are pleased to introduce EQplus by W2IHY.
|
 
|
|
Product Specifications
Dual-Band Audio Equalizer
|
|
|
User-Friendly, Shack-Friendly Self-Contained Unit
EQplus users would rather spend their valuable time on the air instead of endlessly twisting knobs and setting menus. That famous audio guy Albert Einstein said “Everything should be made as simple as possible; but not one bit simpler”. We’re with you, Al. While EQplus employs sophisticated technology custom-engineered for amateur radio, it is surprisingly simple to set up and operate.
Shielding from the steel enclosure, plus extensive internal isolation from RFI, hum and ground loops, ensures squeaky-clean pristine audio output. Like all W2IHY products, EQplus is designed and built to perform flawlessly in real-world amateur applications.
|
|
The Powerful Processing Features of EQplus by W2IHY (or … What did you do to make your audio sound so good?)
|
|
|
|
Adjustable Low Noise Pre-Amp / Input Gain Control: Convenient front panel control makes setting input gain quick and easy. LED Bar Gaph indicates proper setting. The wide-range adjustable low noise pre-amp handles both microphones and line-level audio sources. Dual-Band Equalizer: If you already use a W2IHY 8-Band EQ or other makes of audio gear, you’ll appreciate the way this stage of equalization lets you fine-tune the final audio to the radio. These Bass and Treble controls are a refined update of our original Dual-Band EQ. Compressor: In the quest for stronger signals, compressors have been used in radio communications for decades. The theory, which always looks great on paper, but is challenging in application: Increase average power by controlling instantaneous peaks. When we consider a 100-watt SSB transceiver might generate only 15 to 25 watts of average power, the advantage of even a modest amount of compression is obvious. Unfortunately, most amateur radio speech processors add distortion, processing artifacts and background noise. While adding audio components we don’t want, they also remove audio characteristics we do want. They restrict low frequencies (typically below 300 Hz), making previously smooth and balanced audio harsh and shrill. Amateurs interested in the best possible audio from their radio often conclude the speech processor does more harm than good and operate with it turned off.
Downward Expander: This advanced technology is used to eliminate or greatly reduce background noises picked up by the microphone. Optimum signal-to-noise is a must when the goal is a clean signal that’s a pleasure to hear. The increase in signal presence and effectiveness is a plus for every style of operation including ragchewing, dxing and contesting. This processing stage logically follows the Compressor because compression raises background noise. Speech processors built-into radios do nothing to control noise, but EQplus does. Simply advance the DE control until noise disappears. Downward expansion is preferred in professional audio where faster, more transparent noise reduction is required. It works wonders in ham shacks, too! Limiter: The pre-set Limiter provides consistent output level when onboard levels reach the limiting threshold (indicated on the LED Bar Graph). Use the Limiter in conjunction with the Output Level Control for absolute management of audio signal level going to your transmitter. And there is more to the Limiter in EQplus: Its harmonious relationship with the Compressor gives your audio a commanding presence. Another plus of the EQplus Compressor/Limiter combination: Instantaneous peaks from an unmanaged voice signal can overshoot transmitter ALC causing momentary overdrive, distortion and splatter. With EQplus, the audio going to your transmitter is leveled for precise control. Result? A cleaner transmitted signal. Effects Processor: We think of this feature as creative icing on the cake. After all other processing functions are set up, a slight amount of acoustic enhancement can add a finishing touch of top-end brightness, smoothness and presence. Two tasty flavors are included with user-adjustable delay and level. Adjustable Audio Output Amplifier: Gives you precision control of signal level going to your radio. At low output, a mic-level signal is sent to the radio’s mic jack. Or increase output to achieve up to a line-level signal for “rear panel” feed to your radio’s balanced modulator or DSP input. With front panel control it’s easy to set the level that’s just right for your radio.
|
|
|
Utility Features Add Value (While glamour features get the glory) Premium-quality audio processing is definitely the star of the show in EQplus. At the same time, EQplus sets new standards in interfacing, level management, connectivity and operating convenience. Want to send your great audio to more than one radio? EQplus is equipped with 3 audio output ports and selector switch for instant interface with up to three radios. Simple wiring options to the output cables give your choice of 600 ohm balanced or unbalanced plus HI-Z balanced for classic radios. Use the convenient front panel Output Level control to precisely meet the drive level requirements of different radios. Front panel controls for essential functions give you an elegant solution to that age-old challenge of getting levels set just right. Front-panel LED Bar Graph monitors input signal, compressor and onset of limiting action. High-quality headphone monitor with adjustable volume is ideal for making adjustments. EQplus sports the innovative W2IHY I-K-Y 8-pin microphone jack, aux in DIN jack and RCA jacks for microphone and PTT control.
|
|
Cables
We provide optional cable/connector assemblies custom-made to your requirements. Adding EQplus to a W2IHY 8-Band EQ requires a DIN-to-DIN cable from 8-Band output to EQplus aux in. If you are already using mic cables made for W2IHY EQs, you'll be glad to know EQplus follows identical conventions for output-to-radio wiring. So, the cables are fully interchangeable.
|
|
|
Photo Gallery
|
|
|
Product Comparison Table
|
|
30 Day No Questions Asked Money Back Guarantee
You simply can’t go wrong. Get the W2IHY EQplus. Try it for 30 days. If you are not completely satisfied, return it for your money back. Offer limited to products purchased direct from W2IHY Technologies. Contact us for return authorization.
|
|
3 Year Parts & Labor Warranty
W2IHY Technologies will repair or replace a malfunctioning unit at its option, for a period of three years from date of purchase.
|
|
Free Technical Support
If you encounter any problems or have any questions, you'll appreciate our free technical support. W2IHY Technologies is committed to 100% customer satisfaction. Your questions, problems and comments receive prompt response from the designer himself, Julius D. Jones, W2IHY.
|
|
 |
