Basswitch Clean Boost Manual - Ruppert Musical Instruments
Contents
1. directly to a power amp see also point 2 5 M MID Control Use this control to adjust the amount of mids in your tone This control boosts and cuts the lower mids The technical design used enables a good sound to be maintained even when applying major adjust ments to the signal but we suggest however to use this control with care the intention being more to subtly modify the sound than to fundamentally change it 6 B Bass Control Use this control to adjust the amount of bass in your tone This control has been designed with the deepest frequencies of the bass instruments in mind to permit a targeted cut and boost of these frequen cies This control is very useful with passive basses for instance to give them more depth and substance The technical design used enables a good sound to be maintained even when applying major adjustments to the signal but we suggest that you use this control with care to avoid a bass heavy sound 7 T Treble Control Use this control to adjust the amount of treble presence in your tone This control enables you to create interesting sounds like the classic slap sound Slappers delight Boosting the treble control brings life to dull speaker cabinets and new life to old strings When using new strings es pecially new round wound steel strings you can get the aggressive highs under control by cutting the upper frequencies a little It can also help if needed to reduce the annoying rattli2. times as long as those used in ordinary footswitches Together with typical Lehle electronic circuitry to reduce the switching pop of relays the combination of the above design features represents today s state of the art solution for an uncompromising preservation of the sig nal and hence the sound and character of the instrument Technical data Weight Length Width Overall height Voltage range Power consumption Frequency range Distortion Input impedance Output impedance Signal to noise ratio Max level Max gain EQ Bass Mid Treble Working principle of the Basswitch Clean Boost footswitches Footswitches are pressed thousands of times during their long lifetimes sometimes sensitively but some times more brutally depending on the situation and the musician s temperament An ordinary footswitch will switch up to 20 000 times before wearing out mechanically or electrically which means that either it will stop working altogether or the signal will start to lose transparency and dynamics The Basswitch Clean Boost is equipped with high quality Lehle footswitches Here the foot of the musician does not press an ordinary footswitch but an actuator button that activates a pushbutton inside th Basswitch Clean Boost via a metal lever Because the actuator button an the internal pushbutton are not directly connected the load exerted by t foot is absorbed by the actuator button and the housing preservin
3. Ruppert Musical Instruments CLEAN BOOST User Manual Ruppert Musical Instruments 20a rue de Bascharage L 4995 Schouweiler Luxembourg Tel Fax 00 352 691 379050 Web www rmi lu E Mail jacques rmi lu Congratulations With the Basswitch Clean Boost you have purchased an all purpose su per compact high end bass preamp that gives you the confidence to be adequately prepared for any situation be it in a live performance or in a recording studio When developing the Basswitch Clean Boost we focused on the needs and wishes of the professional bass player who is not willing to compromise on either sound or the technical quality of the equipment The Basswitch Clean Boost is manufactured assembled and tested in Germany to the highest quality standards using only the best brand components available to ensure optimal treatment of the electrical signal from your instrument Please take your time to read this user manual carefully before you start using your Basswitch Clean Boost You will find lots of useful information Summary Introduction Description Tech Talk Technical data Introduction Why a specific Booster for bass instruments The reasons are obvious the frequency range of bass instruments goes from very deep fundamentals e g 30 87 Hz for low B or 41 20 Hz for low E on an electric bass to very high overtones that have a crucial impact on the timbre of the bass instru ment even though they are approach
4. age supplied to the Basswitch Clean Boost is internally rectified filtered and stabilized and then brought to almost 18 V This gives enough headroom to guarantee an open and dynamic sound in all situations with out losing any detail even when confronted with pickup power peaks from plus 7 to minus 7 volts The buffers are designed to effortlessly handle signals reaching the megahertz range At the output the frequency bandwidth is limited to the audible frequency range to prevent HF interference disturbing the electronic circuitry This guarantees optimal transient response by the circuitry and is key to obtaining a sound that is transparent and above all cuts through For switching Lehle True Sound Technology uses exclusively gold plated contact relays and or gold plated switches The decaying signal from a string is so weak that contact materials with lower conductivity have a negative impact on the sound Ordinary footswitches use contact materi als developed to switch high voltages e g electrical power tools as this is their main field of application This can be heard for example when after a switch has been in use for some time a decaying tone starts to break off abruptly Relays and switches with gold plated contacts do not have this problem and even the smallest electrical signals can be trans mitted for years without being negatively affected In addition the relays used in the Basswitch Clean Boost have a lifetime about 100
5. asswitch Clean Boost is used as a preamp upstream of a power amp to drive a power amp an active monitor an active bass speaker cabinet or an in ear monitoring system the Booster must be activated LED lights blue The basic sound is set up using the preamp EQ section of the Basswitch Clean Boost 3 External power supply Connect your external power supply here 9 15V min 60mA with a standard 5 5 x 2 1 mm connector Because of the uncompromising design the quality of the components and the switching technology used the power consumption of the Bass witch Clean Boost is too high to run it satisfactorily on batteries The exter nal power supply should provide not less than 9V and not more than 15V Either alternating AC or direct current DC sources can be used and the polarity is not relevant The voltage supplied is internally rectified filtered stabilised and then brought to 18 V Note To get the best out of your pedal set up we recommend that you use high quality power supplies with isolated output sections in your set up Warning The Lehle power supply item no 7014 with the connector acc to DIN 45323 is not suitable 4 GAIN Control Use this control to adjust the volume of your Clean Boost To permit optimal matching of signals this control enables you to boost and to cut the signal the neutral position is at 12 o clock The high end preamp of the Basswitch Clean Boost allows you to connect the Basswitch Clean Boost
6. buffer to be noisy to cut the dynamics of the sound signal or to negatively affect the sound in any other way for the sound of the whole effect chain to be spoilt As the saying goes a chain is only as strong as its weakest link In addition the noise of the individual buffers adds up to produce audible noise It is a fact that every buffer produces some noise even if it cannot be heard when only a single buffer is used The ideal solution is to have a very high quality buffer at the beginning of the chain that brings the signal down to a very low impedance This makes the signal insensitive to the length of the cable It is important however that this buffer is of the highest quality with the dynamic range and headroom necessary to ensure that all the details of the bass signal stay are retained unaltered The effect pedals in the downstream should then ideally have true bypass so that they will not have a negative effect on the now buffered signal as the true bypass design does not reduce dynamics and headroom or produce any noise Conclusion Having a True Sound Lehle buffer at the beginning of your effect chain combined with good true bypass equipped effects in the loop guarantees the best sound What is Lehle True Sound Technology Lehle True Sound Technology is a combination of several electrical design measures with only one aim in view to transmit the sound and the char acter of the instrument without altering it The volt
7. g th circuit board from mechanical stress The design is as robust as possib and the actuator button mounted in a special socket making for easy an silent operation Inside the Basswitch Clean Boost the impulse from the pushbutton ac tivates special gold plated relays via discrete logic circuitry This way the switching is done only via high quality relays and thus guaranteeing absolutely reliable and loss free switching of very sensitive signals The switching technology and the gold plated relays in the Basswitch Clean Boost are designed to operate for up to two million switching cycles D as 390 g 14 9 cm 6 0 cm 4 4 cm 9 15 V AC DC max 60 mA 30 Hz 150 kHz 0 3 dB 0 0025 2 MOhm 150 Ohm 96 dB 1 kHz 0 dBu 15 dBu with 12 Volt power supply 15 dB 17 dB 40 Hz peaking 13 dB 640 Hz peaking 13 dB 5 kHz 13 dB 10 kHz shelving
8. ing the upper limits of the audible spectrum from 18 Hz to 20 kHz On top of this bass instruments have a characteristic attack with a very steep initial transient followed by a weak electrical signal These characteristics of bass signals make enormous demands on the electronics with the result that the handling of bass signals by most equipment is unsatisfactory and inconsistent in quality Only equipment specifically designed for the purpose is able to handle such a demanding signal pattern adequately Functions and applications overview The Basswitch Clean Boost used as a booster The primary application field of the Basswitch is the one as booster with an adjustable EQ Used as such the Basswitch Clean Boost puts at your disposal a louder tone and or a second sound setting for your instrument at the push of a footswitch Note The Gain control has a volume cut and boost function to allow a perfect match of the desired tone levels The Basswitch Clean Boost as a high end preamp The Basswitch Clean Boost features a high end preamp and a 3 band EQ specifically designed for bass instruments and featuring bass mids and treble controls As a stand alone preamp the Basswitch Clean Boost on the pedal and the various ways it can be used Keep this user manual carefully so that you can consult it at any time Your Basswitch Clean Boost package contains the following items Basswitch Clean Boost User manual Please check that a
9. ll these items are there as soon as you unpack Should something be missing please contact your authorized dealer The Basswitch Clean Boost is built to last but if you nonetheless experi ence problems or have any questions do not hesitate to contact us wish you every success with your Basswitch Clean Boost Yours Jacques Ruppert PUNEN can drive a power amp an active monitor an active bass speaker cabinet or an in ear monitoring system Additional features Lehle True Sound Technology for details please consult the chapter Tech Talk Specially designed to protect the controls from damage and to prevent inadvertent changes to the settings The design of the housing permits easy installation the ultra flat base and removable rubber feet allow the unit to be securely attached to the pedal board using Velcro or similar Description 1 Input IN Connect your instrument here This is the standard input for all instruments The input is designed to accept active and passive instruments 2 Output OUT Connect your bass amp or power amplifier or active monitor here If the Basswitch Clean Boost is used in its function as booster upstream of a bass amp it should be in straight through mode LED lights white when the settings for the basic sound are made on the amplifier Only af ter that the tone for solos a second sound or a second instrument should be set on the Basswitch Clean Boost If the B
10. ng of the strings 8 Footswitch Push this switch to activate the booster Pressing the footswitch turns the Clean Boost on or into straight through mode 9 Status LED This LED turns blue when the Clean Boost comes on and white in the bypass mode Tech Talk True Bypass and True Sound Today more and more effect pedals feature true bypass switching to com pletely bypass the pedal in the signal routing when the pedal is switched off The target of this design is to ensure that the pedal does not affect the electrical signal when it is switched off This way the sound is left unaltered in theory In practice however connecting several pedals featuring a true bypass design in series does not improve the sound or keep it unaltered at all Long runs of cable and multiple connections lead to a weak and lifeless sound On large pedalboards the overall length of the cable is enough for the capacitance of the cable to have a negative effect on the sound The capacitance of the cable acts as a low pass filter the low frequencies pass through the filter while the high frequencies are filtered out The price and quality of the cable you are using will not change this physical phenomenon A solution would be to use only devices with buffered bypass design in stead of true bypass This however is only a good solution if the buffer is of very high quality If several units with buffered bypass are connected in series it only needs one
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