Click on the items below to see printable
instructions and wiring diagrams.

General instructions

2 HB, 1 vol, 1 tone with optional bypass

2 SC, 1 HB, 1 vol,2 tones with optional bypass

2 SC, 1 HB, 1 vol, 1 tone with optional bypass

3 SC, 1 vol, 2 tones

Rowan Custom Guitars
Supercharger
 Active multi function on-board preamp
and volume booster

  

 

 

 

 

    

 

 Retail $59.95
   Sale Price
$49.95
plus $6.00 S&H
     ( in USA )

      Ever wish that when you engage the coil tap function on your favorite axe the volume wouldn't go down?  Well here is a little device that will not
      only solve that problem but it will even let you adjust how much or how little volume change will take place.  The Rowan Supercharger is a small
      on-board preamp which contains two adjustable trim pots  that provide a means of balancing the output of a humbucker style pickup when one
      coil is grounded so the customary loss of volume can be overcome.  The ability to do this eliminates the need to have custom  "stagger wound"
      pickups made in order to deal with the volume loss problem.
 
     The Supercharger is actually two preamps on one board allowing individual adjustment for the neck and bridge pickups on any guitar equipped
     with two humbucker style pickups capable of being tapped.  With the trim pots turned to their lowest setting, no signal boost is applied to the
     selected pickup coil.  As the trim pot is turned up, gain is applied to the coil signal increasing its ability to drive the preamp section of your amp
     thus increasing the volume.  It is possible to adjust the output level so no perceptible loss in volume is detected when the coils are split.  If
     the pot is turned to its maximum setting the Supercharger will provide up to + 18db volume boost.

     The possible uses for the Supercharger are limited only by your imagination.  Use it as a means of balancing output, or use it as a "solo boost"
     adding just enough volume increase to let you cut through.  It will also function as an on-board preamp for piezo pickups.  Because it is
     essentially two amps on one board, you can split its duties and use one side as a balancing feature and the other as a boost or solo enhancer. 



     The Supercharger is designed to provide the following features;

     1. Adjustable gain for the tapped coil mode with noiseless switching between gain and
        no-gain modes.

     2. A total gain boost of up to + 18db.

     3. Operation from standard 9 volt alkaline battery.

     4. Battery disconnected when cable is removed from guitar jack.

     5. Battery life in excess of 1200 hrs.

     6. Protection against reversed battery connection.

     7. Protection against accidental inputs to the output jack, such as static charges or
         plugging into another output.

     8. Requires no cosmetic modifications to your guitar for installation.

     9. Operates via push/pull pot or mini toggle switch.

     10. Small footprint of 1" x 1-1/2".

 

     The Supercharger includes a prewired output jack, battery connector and complete installation instructions. 

    The push/pull pots and mini toggle switch are not supplied and may be obtained from your local music store or from Allparts Music 
    800-327-8942. 
    Their part numbers are as follows:

    DPDT Switch  (EP 0081-010 chrome) (EP 0081-003 blk) (EP 0081-002 gold)
    250k push/pull audio taper pot (EP 0285-000)
    500k push/pull audio taper pot (EP 0286-000)