background image

18

19

12.4. One or several strings sound louder or quieter than 

the others (with UST)

If there’s only a very slight imbalance, let the saddle “shape” on 

the UST for a few days. The fault may be repaired on its own. 

Users have reported that after three (3) days the saddle has settled 
on the UST and the balance becomes perfect.

12.4.1. Possible reasons for imbalance:

• The saddle or the bottom of the saddle slot is not flat.
• The saddle fits too loosely in its slot.
• The saddle slot might be too tight for the saddle to go in all the  
   way. Try pushing on the saddle firmly to seat the saddle all the  
   way down on the transducer.
•  The saddle is too short.
•  There is debris in the saddle slot.
•  The angle of some of the strings behind the saddle is too low or  
   too high.
• The top of the guitar is bent.
• The pickup is not installed all the way to the end of the saddle  
   slot.
• If the material of the saddle is bone - Bone is a natural material  
   and the density and grain may not be consistent. This may cause  
   inconsistencies in the way the sound is distributed making some  
   strings louder or softer than others. We highly recommend a 
   man-made material for the saddle.

12.4.2. If the balance problem does not disappear on its 

own, do the following:

• Check there is no debris in the saddle slot.
• Check the bottoms of both the saddle slot and saddle. They  
   should be flat and straight. It is common that due the guitar top  
   “lives” and moves the saddle slot is not straight. This may hap 
   pen especially during transport or by change of season when 
   the moisture changes a lot. By making the saddle flexible, as in  
   picture, these problems can be greatly avoided.
• Check saddle is not loose in its slot. The saddle should be so  
   tight that you cannot pull it away with your fingers.
• Check string angles behind the saddle. They should be about 
   the same behind every string. If the angle is too low, the string  

the system. Pushing this button in will put the transducer(s) “out of 
phase” with the speaker(s). When the button is out both transducers 
are “in phase.” This control is most useful for feedback control and 
will provide a tone color.

Once you experiment with the settings of these controls you will find 
more about how they work.

12. TROUBLE SHOOTING

Join the B-Band Discussion Forum at the B-Band website - 

www.b-band.com 

The forum has invaluable information concerning technical support, 
installation tips and general discussion about B-Band products.

12.1. 

No sound at all

• Check the guitar cable and amplifier / mixer you are using.
• Check that the battery is not discharged. If the sound is noisy or  
   distorted, replace the battery.
• Check that the transducer(s), mic and battery connectors are 
   correctly inserted onto the pin headers of the preamp.

12.2. 

Loud hum

• Check to see that the connectors of the UST / AST are inserted 
   with the two holes up. If these connectors are upside- down the  
   system will work but it will buzz.
• Check that the connectors are correctly inserted onto the header.

12.3. Resonance or distortion with some played notes 

(with UST)

There are a couple places where a resonance can typically occur with 
some notes, causing distorted-sounding output. First, check that the 
UST is not touching anything and that the wires (battery / mic) are 
not loose and thus cause resonance.

Another place, which in some cases has caused resonance, is the 
transducer hole from the saddle slot to the inside of the guitar. Using 
a soft padding in it has cured these problems effectively.

Содержание UST

Страница 1: ...1 Foremost Technology for Absolute Acoustic Reproduction INSTALLATION INSTRUCTIONS AND USER S GUIDE B BAND UST AND AST TRANSDUCERS A SERIES PREAMPS 10 11 2003...

Страница 2: ...ilms and transducers and is entirely unique in the industry How is it different We could go into a long discussion about the technical aspects like the microscopic lens like gas bubbles inside the per...

Страница 3: ...AMP 11 7 INSTALLING THE PREAMP 13 8 INSTALLING THE TRANSDUCERS 13 9 A2 2 UST GAIN TRIM ADJUSTMENT 16 10 A4 2 AND A6 UST AND AST INPUT GAIN TRIM CONTROL ADJUSTMENTS 10 1 A4 2 preamp 16 10 2 A6 preamp 1...

Страница 4: ...r studio quality and user friendly electronics to the diverse needs of acoustic instrument musicians The A1 is a single input endpin preamp designed for use with either UST or AST transducers 1 GENERA...

Страница 5: ...of the mix actually gives the combined sound of the UST and AST crossed over at 700 Hz When the mix is set at the AST side sound above 700 Hz is the AST and sound below 700Hz is the UST At the UST si...

Страница 6: ...2 and A4 2 preamp package contents 1 pcs preamp circuitry board A3 2 or A4 2 1 pcs A3 A4 preamp box with top and bottom halves 1 pcs faceplate A3 2 or A4 2 4 pcs 2 2 x 4 5 mm screws chrome for box 2...

Страница 7: ...t we recommend you to remove it and replace the saddle with a properly sized saddle Another possibility is to install a suitable wooden spacer underneath the saddle In some guitars the saddle can be s...

Страница 8: ...AST works with all B Band A series preamps In steel string guitars the 1470 AST is attached to the length of the bridge plate In classical guitars the 1470 AST is attached parallel to the bracing betw...

Страница 9: ...he cardboard mounting guide at the rectangle 1470 AST area inscribed on the cardboard Now put the assembly to the bridge pins with the AST towards the bridge plate and check the fit All of the AST s 1...

Страница 10: ...age 22 Drill 7mm 9 32 holes for the potentiometer shafts 3mm 1 8 holes for mounting screws and 5mm 3 16 holes for the lo batt LED and if installing the A4 2 holes for the UST AST input gain controls U...

Страница 11: ...this fully clockwise If needed adjustment of this can be done to preference later 6 3 For the A2 inside there are four DIP switches Switch 1 is an on off switch for the treble boost on channel one no...

Страница 12: ...12 A4 2 Output wire UST or AST Output wire AST Battery wire UST A5 A6 Battery wire Battery wire Output wire UST or AST Output wire UST AST A3 2 Battery wire 6 4 Close preamplifier enclosure...

Страница 13: ...ed section comes almost entirely out of the guitar Put the dress washer and the small nut onto the threads outside the guitar Tighten securely using an appropriate wrench Prevent the jack from rotatin...

Страница 14: ...itar make sure that the UST and or AST leads do not touch anything We do not recommend attaching the leads to the guitar by any means This may cause excessive handling noise and resonance that sounds...

Страница 15: ...ct the mic to a back brace and point the microphone so that it points to the top of the guitar behind the saddle In this position the sound is warm and less sensitive to feedback After attaching the m...

Страница 16: ...ots are set at the full setting from the factory The UST input gain trim pot should be adjusted so the output level is equal in level to the AST UST Before adjusting the input gain make sure that both...

Страница 17: ...ingle output preamp The A6 has five slider type controls two rotary controls and one push button The VOL slider controls the output volume At 0 it is completely OFF At 12 it is LOUD The BASS MID TRE s...

Страница 18: ...oided Check saddle is not loose in its slot The saddle should be so tight that you cannot pull it away with your fingers Check string angles behind the saddle They should be about the same behind ever...

Страница 19: ...p of the UST to that hole If nothing else helps you should machine the saddle slot longer and use a new longer saddle Balance problems may also occur with some string sets for example with classical g...

Страница 20: ...g Dimensions L 60 mm W 47 mm H 25 mm 14 SPECIFICATIONS A1 and A1N Specifications Intergraded notch filter 6db 180 Hz A1N only S N ratio Greater than 90 dB Distortion 0 05 Frequency response 40 Hz 23...

Страница 21: ...ERLY PACKED TO THE DEALER DI STRIBUTOR OR MANUFACTURER A COPY OF THE ORIGINAL BILL OF SALE FROM AN AUTHORIZED DEALER INDICATING WHERE AND WHEN THE PRODUCT WAS PURCHASED SHOULD ACCOMPANY THE PROD UCT D...

Страница 22: ...22...

Страница 23: ...23 A3 2 drill hole guide...

Страница 24: ...24 A4 2 drill hole guide...

Страница 25: ...25 A5 and A6 preamp hole cutting guide 1 790 0585 897 156 1 6848 1248...

Страница 26: ...26...

Страница 27: ...27...

Страница 28: ...ollywood CA 91601 U S A Tel 818 508 9412 Fax 818 508 9413 Email sales b bandusa com Internet www b bandusa com B Band B Band logo UST AST A1 A2 A3 A4 A5 A6 and microscopic lens like gas bubbles are ei...

Отзывы: