Crate Amplifiers MXB25 User's Manual
Contents
1. FIRE OR ELECTRIC PARAgRED AR A ION PROTEG APPAREI DERYA PLUIE ET DE L HUMIDITE SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOIS N sPER D INCENDI D ELBCTROCUTION POUR TURE TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT Q O DF COR NE PAS ENLEVER LE DUVERCLE AUCUNE REMOVE COVER NO USER SERVICEABLE PARTS INSIDE ADENTRQ C IECE INTER REPRABLE PARMPUTILISAJEUR POUR TOUTE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL RR QDO IMIED ATECHNICOS CALI S REPARA TIO D BR UN TECHNIGIEN QUALIFIE ENTILATION OPENINGS ON THIS APPARATUS ING OR STANDING MIQUIDS 1 3 AGENTS OQUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND QUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS WALKED ON PINCHED OR STRAINED SOR WHEN UNUSED FOR LONG PERIODS OF TIME R BRACKETS SPECIFIED BY THE MANUFACTURER FOR SAFE OPERA D PERSONNEL BUCING HIGH SOUND PRESSURE LEVELS CONTINUED EXPOSURE TO HIGH SOUND ENT HEARING IMPAIRMENT OR LOSS USER CAUTION IS ADVISED AND EAR PRO DANGEROUS VOLTAGE IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL VOLTAJE PELIGROSO ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES REFERREZ VOUS AU MANUAL D UTILISATION DANGER HAUTE TENSION MHB 2253 55 Amplifier Important Safeguards and Precautions jp All Crate are designed2. www crateamps com 2002 SLM Electronics a division of St Louis Music Inc 1400 Ferguson Avenue St Louis MO 63133 18 432 01 04 02 recyclable
3. Facility 700 Hwy 202 W Yellville AR 72687 USA Shipping Facility 1400 Ferguson Ave St Louis MO 63133 USA Office Facility 1400 Ferguson Ave St Louis MO 63133 USA Product Type Audio Amplifier Complies with Standards LVD 92 31 EEC 93 68 EEC amp 73 23 EWG Safety EN60065 EMC EN55013 EN55020 EN55022 EN61000 3 2 amp EN61000 3 3 Supplementary information provided by SLM Electronics R amp D Engineering 1901 Congressional Drive St Louis MO 63146 USA Tel 314 569 0141 Fax 314 569 0175 MHB 23Bass Amplifier The Front Panel MHB25 One 7 2 3 4 5 6 7 1 OdB INPUT Use this 1 4 jack to connect your instrument to the means of a shielded instrument cable If your instrument has active el high output pickups or if the amplifier distorts at low settings of the 3 use the 15dB Input jack 2 1505 INPUT If your instrument has active electronics or high use this 1 4 jack to connect your instrument to the amptifi means ed instrument cable The input signal is attenuated 15dB to pr ove amplifier s input stages 3 GAIN Use this control to adjust the level of the input signal 4 CONTOUR Use this control to adjust the tone of the input si lifier by yNICS OF control ups 610 the V Contd control selects the frequency where the effect is er ide va ety of tone variations from
4. Owner s Guide for the GRATEAAHB25 Bags Amplifier enn o OO U M HB2S3Bass Amplifier Congratulations You are now the proud owner of the compact but powerful Crate MXB25 Bass Amplifier The small size of this amplifier belies its big performance the 10 Crate Custom speaker makes the most of the amplifier s 27 watts of musical output power A 4 band rotary EQ combined with Crate s variable Contour control gives you complete control over a wide variety of sounds In addition the front panel headphone and external speaker jacks make this amplifier equally suited for practicing as well as perfoming in intimate surroundings Like all Crate products your MXB25 is designed by musicians and built using only the best components Extensive testing confirms that this amplifier is the absolute best it can be In order to get the most out of your new amplifier we strongly urge you to read the information contained in this manual before you begin playing And thank you for choosing TABLE OF CONTENTS Important Safeguards and Precautions 3 The Front Panel 45 Suggested Settings System Block Diagram 11 Technical Specifications back co CAUTION PRECAUCION 4 TENTION RISK OF ELECTRIC SHOCK RIESGO DE CORRIENTAZO psh WARNING TO REDUCE THE RISK OF
5. TION 7 MASTER OdB 25d0B GAIN LOW LO MID HI MID HIGH 821125 INPUT EQUALIZATION MASTER 25d0B LOW 10 MID HI MID HIGH 821125 ean a ee CONTOUR Z EQUALIZATION 7 MASTER OdB 25d0B GAIN LOW LO MID HI MID HIGH 821128 MHB 225 55 Amplifier System Block Diagram GIN GIW IH IH ANNIOA YAlSVN one 1X3 3 2 32 9 3 j lt INANI P gpo 4148 53 225 355 Amplifier MXB25 TECHNICAL SPECIFICATIONS Output Power Rating 27 watts RMS 5 THD 4 ohms 120 VAC Maximum Input Signal Accepted 15 volts peak to peak Input Impedance 220k ohms Signal to Noise Ratio 508 Low Control 28dB Range 60Hz Low Mid Control 15dB Range 400Hz High Mid Control 18dB Range 1kHz High Control 33dB Range 10kHz Power Requirements 120 VAC 60Hz 45VA 100 115VAC 50 60Hz 45VA 230VAC 50Hz 45VA 5 Speaker Size and Rating Crate Custom Design 10 30 watts a Size and Weight 16 x 15 W x 12 D 39 Ibs e The MBX25 is covered with a durable black Tolex material wipe it clean with a lint fr h Never spray cleaning agents onto the cabinet Avoid abrasive cleansers which would dam finish Crate continually develops new products as well as improves existing ones For this reaso and information in this manual are subject to change without notice
6. a studio V shaped t Lope nt live sound This control is only active when the Contou fo iSyae pressed 5 CONTOUR ACTIVE This_swftch when dep activaies th 0810 con trol 4 6 LOW Use this spofise of the amplifier Rotating the control coug duc quency oytput Rotating the control clockwise eag f AC uUt The Low control proyidesja range of 5 a LQ the thickness or fatness of the amplifier 4 reduces the lower middle frequency output Oe eases the lower middle frequency output The ro A ge of 15dB of boost or cut at 400HZz a j Ji Wp adjust the clarity and definition of the string attack 2 lockwise reduces the upper middle frequency output va h Sf Ogkwise increases the upper middle frequency output The oy6vides a range of 18dB of boost or cut at 1kHz MHB 2253 55 Amplifier A 38 va m e ee gt _ lt AA A N ON 10 0 10 i mit 8 rg f 11 12 13 14 15 control to adjust the high frequency response of the amplifier ati control counterclockwise s the high frequency output Rotating controM reckwise e high frequency output The High control pro es a ran of boost or cut at 10kHz MASTER LEVEL Use this control to adjust the overall output of the amplifier LIMIT This LED illuminates when the amplifier is near clipping Flashing at cak playing levels is acceptable Ho
7. for continuous safigsperatier Abiding by the following rules can help prevent damage to your ampji reduge tHe risk of neve or otherwise attempt Jefgat the ground Gomect the amp oper A other e ampljfier is equipped wi pronged power cord To AOP f grounded AC outlet of the rain and moisture Also avoid Cig ct If the unit has been subjected to any of the an d at by an authorized service center void sug SUddemal orecedifr 1 to splashing or dripping liquid Do not place liq f opjects on the unit 9 NEWER set the amplifi pport that will not bear its weight e Alw the total speaker impedance at or above the rated load e Unplug the amplifier before cleaning it NEVER spray liquid cleaners onto the amplifier Wipe it with a slightly dampened lint free cloth to remove dirt and film DO NOT use the amplifier if it has sustained damage to the chassis controls or power cord Refer the unit to an authorized service center OK inspection olo ged exposure to high volume levels may cause permanent hear wgaloss or damage Such damage is progressive and irreversible Declaration Of Conformity 28 Effective 01 01 2001 Manufacturer s Name SLM Electronics Production Facility 11880 Borman Drive St Louis MO 63146 USA Production
8. wever if the indicator remains illuminated the Master Level control 10 until the indicator flashes SADPHONES Use this jack to connect headphones to the amplifier The speaker is disconnected when headphones are used 1 1 IONs To avoid possible damage to your hearing do not use head ONeMes for extended periods of time at extremely loud levels 13 SPEAKER Use this jack to connect the amplifier to an external speaker The internal speaker is disconnected when this jack is used The impedance the exter nal soeaker must be 4 ohms or greater WARNING Do not attempt to use headphones in the Speaker jack Permanent hearing damage could result 14 ON LED This LED illuminates when the amplifier is turned on 15 POWER Use this switch to turn the amplifier on top of the switch depressed and off bottom of the switch depressed 16 POWER CORD rear panel not shown The grounded power cord should only be plugged into a grounded power outlet that meets all applicable electrical codes and is compatible with the voltage power and frequency requirements stat ed on the rear panel Do not attempt to defeat the safety ground connection M HB2S3Bass Amplifier Suggested Settings 2001 ACTIWE j NPUT CONTOUR p EQUALIZATION MASTER 25dB GAIN LOW LO MID HI MID HIGH 821128 ACTIVE INPUT CONTOUR p EQUALIZA
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