HOAG WOODWORKS and INSTRUMENTS  

 with Optical pickups   RON HOAG        P.O. BOX 3053        NEWBERG, OR     97132                     

PHONE 503-625-4044     mailto:RonHoag@juno.com

background information

1971 NAMM SHOW PICKUP.jpg      1977 musician guide     molalla pioneer.jpg     

FOR MORE INFORMATION CALL 503-625-4044

 

HELLO, FROM MY SHOP!   I'M  ENJOYING                                             The truth about ufo's and their constant search for those that believe!     

MY LATEST PROJECT, BUILDING A                                                                           TUNNEL VISIONS PROJECT.pdf    ANY QUESTIONS? 

20' REPLICA OF A 1941 BARRELBACK

Barrelback by Ron Hoag - pic895a  

FROM THE BEGINNING, CLICK ON THE LINK or PICTURE

ADDED MORE BOAT PICTURES, CLICK ON THE PICTURE

 

 

 

Hoag Instruments, also offers a Faster MIDI Guitar Pickup.

PARTS LIST AND PRICES

Wade,                                           

I do indeed, feel your frustration in the acceptance of new ideas in musical instruments.  As you have suggested,  musicians have had many advancements in instruments, suppressed from them. 

 
My designs on my web page are there for those who would like to test these pickups form them self. The exact values of the parts are open  to each application. The violins can use, one of the 200k ohm input transformer and smaller cap values. The bass needs to have a higher value of 500k ohm and higher values of caps. I've found that the transformer companies do not make the 500k ohm as a standard part, but could be achieved by using two of the 200k ohm input transformers in series. This works well and also can be used in reverse for phasing mode, for special effect.
 
 In the late 1960s Radio Shack had these 500k for $1.95, times change.  The 200k ohm input transformer can be gotten from Radar, Inc, An electronic parts supplier. It is also supplied by Calrad Electronics wholesale. Part # 45-703 about $5 each. The photo diode and LEDs are supplied by Allied electronics. Their part numbers are; 263-1609 (QEE123) about 33 cents each and 263-1638 (QSE773) about 44 cents each.
 
Try these for yourself and if  it works for you , we'll talk later.
Thanks, Ron

 http://www.gearwire.com/     Ron-Hoag-interview.html 

EACH PICKUP IS  INDEPENDENT  AND WITH SPECIAL MODIFICATION, CAN BE USED ON ANY TYPE OF STRINGED  INSTRUMENT.

THIS IS THE PROTOTYPE  OF MY MIDI BASS, HEAR THE  MIDI SOUND FILES BELOW.  THE POWER SUPPLY IS CONNECTED EXTERNALLY.  THE EXTRA FILTER NETWORK IS ON THIS BOARD.  

NOTICE THE SECOND TRANSFORMER, THIS WILL GIVE AN EXTRA BOOST TO THE LOWER FREQUENCIES AND CAN ALSO BE USED AS A PHASING CIRCUIT FOR EFFECT.  COUNT THE PARTS OF THIS PICKUP.

click on pictures to enlarge    THANK YOU, RON HOAG

   

                         click on circuit parts to enlarge               

  

                        click on picture to enlarge

THE STEREO JACK HAD BEEN MY STANDARD SINCE 1969 NAMM. AN INLINE FORM IS USED AT THE 1971 CHICAGO NAMM. AND THE SUMMER 2001 NAMM.

    

                                                                                                                                      

THESE ARE MY 1970 CIRCUITS. THEY ARE VERY SIMPLE AND INEXPENSIVE TO MAKE. THE NEW DESIGNS HAVE LEDs NOT LIGHT BULBS. PLEASE  LISTEN TO MY SOUND FILES  BELOW. 


THE INDUCTOR IS HIGH IMPEDANCE AND WILL DEVELOP THE "MAGNETIC SNAP", THAT MAGNETIC PICKUPS GIVE AS IT DISCHARGES THE COIL. THE CIRCUIT THAT FOLLOWS THE CAPACITOR 94, IS REPRESENTATIVE OF THE AUDIO AMPLIFIER. THE PICKUP CIRCUIT HAS NO ACTIVE DEVICES OTHER THAN THE PHOTO DEVICES. THE OUTPUT VOLTAGE IS CONTROLLED BY THE AMOUNT OF LIGHT RADIATION FROM THE LEDs, MORE RADIATION THE MORE VOLTAGE OUTPUT. THIS CIRCUIT HAS 3 TO 5 VOLTS OUTPUT. HIGHER OUTPUT CAN BE OBTAINED AND CAN REACH TO 30 VOLTS OUTPUT. NEW AMPLIFIER DESIGNS CAN TAKE ADVANTAGE OF THIS HIGHER VOLTAGE.

Fast response time is the key word here. Magnetic pickups, that started the midi guitar pickup evaluation, has given us a challenge to improve the midi response time. Other mechanical pickups have been used, but they have difficulty in the lower frequency of the vibrating strings.  Response time, The time for the midi trigger circuits to latch onto the fundamental of each string, is critical for any midi interface.  This has been limited by many factors within each pickup. Every trigger circuit relies on the signal fed into it to be the fundamental frequency. If not, it has to filter out the string harmonics to do that. Hoag Optical Pickup generates the fundamental first and then the harmonics follow.
 
The first signal that comes from the Hoag Optical Pickup, is pure fundamental. For that instant in time the signal has not had time to reach the bridge. It is only after the fundamental reaches the bridge that it has time to create the harmonics and reflect back to the finger position or nut. 

Midi guitar major or 7.mp3             

Hoag Optical Pickups also, greatly expands the frequency of the pickup. The Hoag Optical Pickup is responsive from a few Hertz to well over Human hearing and is quite evident in the sound file
Blues on HOAG LB.mp3   K-MAX-MIDI-BASS-SAMPLE-2.mp3    Midi dance by Ron Hoag.mp3    Optical Pickup Bass and Guitars.mp3   

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