Specifications

UST Models and Specifications:
For use with steel and nylon stringed guitars, ukulele and
instruments that have similar saddle and bridge structures.
Model 29R UST:
29R- 2.9mm / 1/8”: wide saddle slots.
Active area: 80mm / 3”
Overall length: 330mm / 13”
Model 22R UST:
22R- 2.2mm / 3/32”: narrow saddle slots.
Active area: 80mm / 3”
Overall length: 330mm / 13”
UST Features:
• Operation based on the exclusive
B-Band / Emfit electret film
• UST has two sizes that will fit most guitars
• Reproduces the original tone without
affecting the instrument acoustically
• Ultra-thin and lightweight
• Wide dynamic range and frequency response
• High gain before feedback
• Easy and fast plug-in installation without soldering
• No or minimal modification
3. OVERVIEW OF B35 PREAMP
The B-Band B35 preamp is designed to give optimum
performance with B-Band UST transducer. The main
criterion in designing these preamp was to deliver
professional musical sound quality and user-friendly
electronics to the diverse needs of acoustic instrument
musicians.
The B35 Preamp
The B35 has the HzzLess® circuit for outstanding low
noise and high output.
The B35 is a side mount preamp with a volume and tone
control, chromatic tuner, tuner button, low battery LED light
and a battery compartment at the faceplate. This single
input preamp is for use with the UST pickup.
T10has a special 6.3 mm (¼”) output jack that when a ¼”
plug is inserted turns on the 9-volt power.
The T35 is powered by 9-volt power.
For operation of the B35 see the User's Guide.
4. PREPARING THE INSTRUMENT FOR INSTALLATION
Please read completely before starting the actual
procedure.
Remove the strings and the saddle. Check that the UST fits
into the slot easily and that the saddle is sufficiently tight in
the slot.
4
Drilling hole for UST
For UST check the inside of the instrument to find the
position of the braces. Drill a preferably 30 - 45 degrees
angled, 2.6 mm (.10”) for the transducer into the one end of
the saddle slot. Be careful not to damage any internal
braces!
In case you cannot make the hole angled, because of
possible damage to the braces, you can make it straight
down in a 90-degree angle.
It is very important to smooth the edge of the hole using a
bit of rolled sandpaper or a small file, so there is not a
sharp edged corner, to avoid pinching or crimping the UST
as the saddle lies on it.
In case you cannot make the hole angled, because of
possible damage to the braces, you can make it straight
down in a 90-degree angle.
It is very important to smooth the edge of the hole using a
bit of rolled sandpaper or a small file, so there is not a
sharp edged corner, to avoid pinching or crimping the UST
as the saddle lies on it.
to check inside the instrument body that there is enough
clearance for the preamp at the side between the
soundboard and the back of the instrument. Be sure to
check that the pickup will reach the preamp from its
position under the saddle and bridge area.
The sides of the instrument where the preamp will be
installed should be inspected for accessibility and stability.
Inside some instruments there is kerfed lining (the wood
reinforcement between the back and sides inside the
guitar) and other reinforcements that may make the area
too small to install the preamps. If these reinforcements are
altered it may cause instability at the instrument's side.
Instruments with solid sides or that have very thin sides
may not be stable after cutting a hole to fit the preamp. It
may be necessary to reinforce this area from the inside of
the instrument with an extra piece of plywood before cutting
or drilling holes. If needed glue in a piece of plywood of
suitable thickness to reinforce that area.
Cover the planned installation area with masking tape and
mark the area with a pencil using the provided preamp
hole-cutting template at the end of these instructions.
Prepare the instrument for cutting the preamp hole by
securing it in some way so that the guitar does not move
while doing the cutting. For best cutting results, use a
routing tool. Do this slowly and very carefully so the cutting
tool does not accidentally move outside the area that you
have marked with the guide. Smooth the edges of the
finished hole with a small file or sand paper and remove the
masking tape.
5. CONNECTING THE PICKUP TO THE PREAMP.
Connect the pickup. Notice that the small holes on the
connector of the pickup should point upwards when
connecting. If UST is connected improperly a loud audible
hum will occur.
The pickup is inserted onto the pickup “tunnel” and
connected to two pins at the end of the tunnel. Using a
screwdriver, or similar tool, carefully and easily push on the
plastic connector until the end of the travel. Do not push
hard as it is well connected at the end of travel.
5
Making holes for T35 preamp
Find the B35 preamp cut hole plans at the back of this
book.
Find a good position for the preamp at the side of the
instrument. Be sure that the position is so that when the
holes are made the holes, and the preamp structure when
installed, do not interfere with the any of the instrument
braces or supports. For this installation it is very important