Guitar Preamp - AMT Electronics
Contents
1. www amtelectronics com www amtelectronics com 4 42. 55 30 Guitar Preamp User s manual www amtelectronics com Safety precautions CAUTION There are no user serviceable parts inside Repair of the device can be carried out only by qualified experts If the device is not used it must be disconnected from mains WARNING In order to avoid fire or electric shock the device must not be exposed to rain or moisture Do not let water or other liquid get inside the device Do not place vessels such as vases filled with liquid on top of the device AN This symbol indicates important information related to the 5 device maintenance and servicing contained the accompanying documentation Please read the instruction manual very carefully 1 Keep the user s guide at hand 2 Pay attention to warnings 3 Follow all instructions related to device operation 4 To clean the device use only a dry cloth having disconnected the device from mains prior to that Do not place the device near heat sources keep it from direct sunlight 6 Lay the mains cable so that it is not stepped on and avoid its contact with sharp corners etc you use the plug or outlet for switching the device off they should be easily accessible 7 Use only additional devices and accessories recommended by the manufacturer 8 Disconnect the device from mains in case of thunder storm or when the device is not in use for prolonged time 9 Remove the battery if you don t use the device for a prol
3. SS 30 Features powered by two 9V 6F22 batteries or 18V DC power adapter fast and hassle free batteries replacement without using a screwdriver less than 10 mA current consumption without external MIDI converter 3 channels Clean Crunch Lead serial FX Loop separate cabinet emulator output 3 5 mm jack to control external MIDI devices by means of AMT FS 2MIDI SS 30 Channels Description AMT SS 30 preamp features 3 channel design CLEAN Channel has classic clean sound similar to old time amps and provides both velvety transparent sound and a slight overdrive depending on CLEAN GAIN position CLEAN Channel has separate 3 band tone drive and level controls as well as CLEAN BOOST switch providing more energy and presence CRUNCH Channel has much higher overall sensitivity Its wide control range along with ample output tone control possibilities allows to obtain sounds from light airy crunch to hard amp heavy approaching LEAD Channel s density and brightness LEAD Channel is distinguished by high sensitivity and provides aggressive modern guitar sound for both standard and lower tunings The well saturated channel sound is oriented to obtaining modern resilient chord punch as well as speedy licks readability In this way the channel can be used not only for aggressive rhythm parts but also bright expressive solos To enhance tone control possibilities of the common tone control unit of DRIVE channels Crunch Lead we incorp
4. adapter only AFTER all audio connections have been accomplished gt Before connecting the preamp to power adapter make sure that the casing cables low voltage connector and power plug are free from damages no cuts cracks dents and so on and are in operable condition gt connect the preamp to the power adapter first insert the low voltage connector of power adapter into corresponding socket on the rear panel of the preamp and then plug the adapter into the wall outlet DISCONNECTION of the guitar preamp from power adapter gt To disconnect the preamp from the power adapter first disconnect the adapter from mains and then disconnect its low voltage connector from the socket on the rear panel of the preamp COMPLETE SET 1 SS 30 1 2 Instruction manual 1 3 Packaging box 1 4 Warranty card 1 www amtelectronics com 1 The SS 30 guitar preamp is intended for use in studio and live performances AMT SS 30 is a 3 channel JFET based tube overdrive modeling device with full parameters visualization The device allows for simultaneous and separate use of two outputs to a mixer s line input and an amp s RETURN The serial FX loop can be used for external effect pedals connection With external MIDI converter e g AMT FS 2MIDI linked to the special connector the device can be combined with external MIDI devices AMT SS 30 features low energy consumption from 18V DC power adapter or two 9V batteries INTRODUCTION
5. CH channel gain amount 16 HIGH adjusts DRIVE Crunch Lead high frequency response 17 LD GAIN adjusts LEAD channel gain amount 18 MID adjusts DRIVE Crunch Lead mid frequency response 19 DRIVE channel operation indicator in LEAD mode 20 CRUNCH LEAD footswitch selects between CRUNCH and LEAD in DRIVE channel Left panel a a SSS LOOP OUTPUT OUTPUT RETURN MIX 21 OUTPUT TO MIX direct output to mixer s line input 22 OUTPUT TO AMP direct output to power amp bypassing the built n preamp 23 FX LOOP RETURN connects to external effects unit output 10dB www amtelectronics com 3 Right panel OUTPUT Fe LOOP 24 OUTPUT CONTROL control signal output for MIDI converter such as FS 2MIDI 25 INPUT for electric guitar connection 26 FX LOOP SEND connects to external effects unit input 10dB Battery compartment 27 Battery compartment cover 28 Battery compartment cover screw WARNING cable connections must be made ONLY WITH PREAMP SWITCHED OFF BATTERY REPLACEMENT WARNING AMT BC 1 requires two 9V 6F22 batteries Never use old and new batteries simultaneously Replace 2 both batteries if necessary Do NOT mix batteries of different manufacturers and types To use replace the batteries 1 Loosen the screw 28 lift the battery compartment cover 27 to access the batt
6. eries 2 Carefully picking one battery with your finger lift it from thy compartment and pull it toward yourself 3 Repeat 2 for the second battery 4 Insert new batteries using the reverse sequence with correct polarity battery upwards 5 Tightly close the battery compartment cover 27 Tighten the screw 28 slightly pressing the cover Note in order not to lose the screw 28 do not remove it from the cover 27 just use it to loosen the cover www amtelectronics com 3 AUDIO CONNECTIONS AND SWITCHING WARNING cable connections must made ONLY WITH PREAMP SWITCHED OFF 10dB OUTPUT TO FX RETURN OUTPUT TO CTRL OUT Possible audio connections of preamp with external devices DC18V FA MULTIPROCESSOR WITH MIDI 2 8 z a 5 om lt 5 RETURN 21 JES 56 C i cn 67 Ss o U sf a OUTPUT AMP a we Le S OUTPUT gikta TO MIX m Ww a ra e9 i i N N TO POWER MIX 4 4 z EDT enw MIDI FOOTSWITGH T a 4a elas a a m FS 2MIDI gt so ti Electronics
7. high volume can harm your hearing and CAUTION or damage the dynamic heads of your acoustic system Before turning the device on rotate Volume controls to extreme left position counter clockwise At all times try to adhere to moderate volume level INPUT Input resistance 1 0 MOhm Response 10 250mV OUTPUT Output resistance 600 Ohm Output signal level OdB 775 Recommended load min 10 kOhm CAB SIM output Output resistance 600 Ohm Output signal level 10 250mV Recommended load min 10 kOhm RETURN Input resistance 1 0 MOhm Response 10 250mV SEND Output resistance 600 Ohm Output signal level 10 250mV Recommended load min 10 kOhm Power Two 6F22 batteries Voltage DC 18V 10 mA max 13 5 with external MIDI converter Power adapter optional Voltage DC 18V Load current 0 15 A min Dimensions Weight NET dimensions WxHxD Without power adapter NET weight without batteries and power 125x62x106 mm 0 54 kg adaptor GROSS dimensions WxHxD About 206x83x140 mm GROSS weight About 0 7 kg ran Use only auxiliary devices and accessories recommended the manufacturer Power adapter low voltage connector contacts arrangement s oC Powering the device from batter
8. onged period of time 10 works related to the device repair must be done only by qualified service personnel 11 WARNING All service instructions are intended only for qualified personnel in order to avoid electric shock do not carry out any repair works which are not described in the instruction manual Repair works must be carried out only by pi qualified experts www amtelectronics com 1 Contents Important instructions Complete set Introduction SS 30 Features SS 30 Channels Description Before you start Specifications Power adapter low voltage connector contacts arrangement Powering the device from battery and power adapter Controls Front panel Left panel Right panel Battery Compartment Batteries installation Audio connections and switching Block diagram BHO WWWWWNHNHNNHNNN 2 IMPORTANT INSTRUCTIONS NON OBSERVANCE OF THE FOLOWING INSTRUCTIONS MIGHT RESULT IN YOUR DEVICE DAMAGE GUARANTEE 1 VOID IF THE DAMAGES ARE CAUSED BY NON OBSERVANCE OF THESE INSTRUCTIONS gt After transportation or storage of the device under negative temperatures make sure to leave the device under room temperature in its original packaging for AT LEAST 2 HOURS gt To connect the guitar preamp to other devices use exclusively cables intended for such connections gt Under no circumstances use other types of cables such as for speakers etc CONNECTION of the guitar preamp to power adapter gt Connect the
9. orated DR TONE SHIFT switch providing better tone coordination between the preamp and your power amp and cabinet CAUTION AMT preamps like any other high class devices are very sensitive to power adaptor quality We insist on your using either two 9V 6F22 batteries or an adapter meeting the quality specifications to power your device Before you start For safe transportation the device was carefully packaged by the manufacturer However if the cardboard packaging is damaged you should immediately inspect the device for the absence of external damages gt In case of damages do NOT SEND the device to manufacturer but inform the seller or transport agency since otherwise you will lose the right to damage compensation gt In order to avoid damages during storage and transportation always use original packing gt Do not allow children to play with the device and packaging materials gt Please recycle all packing materials in the way harmless to the environment gt In order to avoid the device overheating provide a sufficient airflow around it do not cover it and do not place near other heat emitting devices gt Device operation near powerful radio transmitters and sources of high frequency signals can result in appreciable deterioration of sound In this case increase the distance between the device and the transmitter and use screened cables for all interconnections www amtelectronics com 2 Please be aware that
10. y and power adapter AMT BC 1 is powered either by two 9V 6F22 internal batteries or external DC 18V power adaptor the required adaptor quality specifications are shown in Specifications section When using batteries the device enters ON mode only after insertion of mono jack into the device s INPUT When using DC 18V adaptor the device is switched on after insertion of the adaptor s connector into the device insertion of mono jack is not necessary www amtelectronics com 2 CONTROLS Front panel 9 1 CLEAN DRIVE footswitch selects between CLEAN and DRIVE Crunch Lead 2 DRIVE Crunch Lead channel operation indicator LD LEVEL adjusts the LEAD channel output signal level 4 LOW adjusts DRIVE Crunch Lead low frequency response 5 CR LEVEL adjusts CRUNCH channel output signal level 6 DR TONE SHIFT switch adjusts high frequency response of DRIVE Crunch Lead 7 LEVEL adjusts CLEAN channel output signal level 8 LOW adjusts CLEAN channel low frequency response 9 CLEAN BOOST adds mid frequencies to CLEAN channel 10 adjusts CLEAN channel mid frequency response 11 DC 18V on the rear panel of the device for connection of power adapter 12 HIGH adjusts CLEAN channel high frequency response 13 GAIN CLEAN channel gain adjustment 14 CRUNCH BRIGHT switch adds more high mid frequencies in CRUNCH channel 15 CR GAIN adjusts CRUN
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