5
3. OVERVIEW OF A3T PREAMP
All B-Band A-series preamps are designed to give optimum
performance with B-Band UST and AST transducers. The main
criterion in designing these preamps was to deliver studio qual-
ity and user-friendly electronics to the diverse needs of acoustic
instrument musicians.
The A3T has the HzzLess® circuit for outstanding low noise
and high output.
The A3T is a side mount preamp with a 4-band “graphic” equal-
izer, chromatic tuner and low battery LED light. This single input
preamp will accept either UST or AST.
The A3T uses a standard 6.3 mm (1/4”) plug to turn on the
9-volt power.
For operation of the A3T see the User’s Guide. If user’s guide
is not with package, it can be found as a download at www.
b-band.com
4. PACKAGE CONTENTS
Note!
In the USA, transducers and preamps are packaged to-
gether.
4.1 UST package contents:
• 1 pc UST transducer
4.2 AST package contents:
• 1 pc AST transducer
• 1 pc cardboard installation guide (only AST)
4.3 A3Tackage contents:
• 1 pc A3Tpreamp circuitry board
• 1 pc A3Tpreamp box
• 1 pc A3Tpreamp box back
• 1 pc faceplate
• 4 pcs 2.2 x 9.5 mm (.09” x .37”) screws (black) for faceplate
• 1 pc output cable with endpin jack and strap attachment
• Strap attachment includes:
- Small hex nut
- Small dress washer
- Lock washer
- Large dress washer
- Large hex nut
• 1 pc battery holder with adhesive
• 1 pc battery cord harness (length 15 cm / 5.90”)
• 2 pcs wire clips
• 1 pc instructions
• 1 pc user guide
5. TOOLS AND MATERIALS NEEDED FOR INSTALLATION
• Drill, preferably with continuously variable speed
• Wood or metal drill bit, 2.3 mm (.09”) or 3 mm (.12”) depending
on the width of the transducer
• Wood or metal drill bit, 3 mm (.12”)
• A rotary wood router with sharp 3 mm (.12”) cutting bit
• Screwdriver, Posidriv #1
• Endpin reamer, 12 mm (.47”) or wood drill bit, 12 mm (.47”)
• Allen wrench, 2 mm (.08”)
• Punch (spike)
• 13 mm (.51) wrench to tighten the nuts on the preamp endpin
jack
• Small hand-held mirror
• Flashlight (penlight)
• Small round file
• Masking tape
• If installing 1470 AST – cardboard installation mounting guide
(supplied)
6. PREPARING THE GUITAR FOR INSTALLATION
Please read completely before starting the actual procedure.
6.1 Test fitting AST
For test fitting 1470 AST (if applicable), loosen and remove the
strings from the tuning machines.
Before removing the strings and bridge pins from the bridge
check to see if the AST will fit at the bridge plate correctly. Also
