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Coomber Cassette recorder language lab station & coomber headset boom microphe ORIGINAL
The 3904 is Audio Active Comparative. It uses the standard compactcassette, but the cassette is used on one side only. The ‘Comparative’feature is obtained by using the lower half for the ‘Teacher’ recordingsand the upper half of the ‘Student response recordings.Power from Mains (Model 3904, 3904/R)Connect to the Mains supply, the green indicator (10) will lightmomentarily and then extinguish.The green indicator (10) will NOT glow again until:-a Headset is connected to the MASTER headset socket (4), ora cassette has been inserted in the tape deck and the door closed.Power from Rechargeable Battery (Model 3904/R)The rechargeable battery is charged automatically when Mains isconnected. It cannot be overcharged. When the rechargeable batteryis low the green power light (10) will flash. The battery must then becharged for approximately 6 to 8 hours for full charge.The rate at which this battery is discharged is dependent on its originalcharged state, volume and use of cassette mechanism. WARNING – donot allow the battery to become totally exhausted as this will causepermanent damage to the battery.Power from Coomber 901 Controller (Model 3904 -24)The 3904-24 model is powered by the Controller (24volts AC). Thegreen indicator (10) will illuminate only when the Controller unit isswitched on. DO NOT CONNECT OR DISCONNECT from the Controllerwhile it is switched on – otherwise damage may ensue.Cassette MechanismThis is a logic controlled solenoid Mechanism, which operates in aconventional manner, although it is designed with extra featuresespecially useful in the Language learning and Special Needs areas ofEducation.a. To load a cassette press the EJECT button (11). The eject will onlyoperate if the tape is not moving i.e. STOP or PAUSE modes. DuringRECORD, PLAY, REWIND, FAST FORWARD the eject is locked.b. Record is a two key sequence; press RECORD followed by PLAY.c. You can REVIEW straight from RECORD.d. ‘Punch-in’ RECORD is obtained when in the PLAY mode simply bypressing the RECORD key.e. The PAUSE key has dual operation. Permanent PAUSE is obtainedby a single touch on’ or ‘off. The indicator in the key will flashwhen in PAUSE mode. Temporary PAUSE is obtained by holding thekey.f. During REWIND or FAST FORWARD, the speed of the tapeincreases after about 6 seconds. This reduces the time forfastwinding operations.g. The mechanism has full AUTOSTOP on all functions.h. Set the turns counter to zero to locate the position of a passage onthe cassette.NOTE – It is important to keep the pinch wheel and heads clean in theusual manner to ensure trouble free performance.Automatic Recording LevelWhen recording, the Record Level is automatically set to give goodand easy recordings at all times.To Make a Teacher RecordingThe teacher track is the lower track on the cassette and recordings canonly be made when the 3904 is connected to a 901 controller. NOTE -both STUDENT RECORD (9) and TEACHER RECORD (8) indicators willilluminate.The volume of the programme in the headset, is controlled by theTEACHER VOLUME (1).Alternatively, teacher track recordings may be made on a conventionalrecorder for playback on the Teacher track of the 3904. Rememberthough, to record on only one side of the cassette.To make a Student RecordingThe MASTER headset socket (4) must always be used in individual orgroup activities.Adjust STUDENT VOLUME (2) to obtain satisfactory volume of studentspeech (side-tone) through headset(s).Insert cassette as normal but ensure you are using the correct side.Depress RECORD key followed by PLAY key, the red indicator markedSTUDENT RECORD will light.Adjust TEACHER VOLUME (1) to obtain correct playback sound level ofTeacher track.Operating Instructions: 3904, 3904/R, 3904-24 CoomberSTUDENTVOLUMETEACHERVOLUMETONETEACHERCALLKEYBANKEXTSTUDENT TEACHERRECORDRESETP0WERHEADSETS 2 3 4 5 6Coomber 3904 A.A.C. RecorderMASTER999CONNECT TO MAINS POWER AND PRESS EJECTIF CASSETTE FLAP WILL NOT OPENEJECT0 50 100REC REW/REV PLAY FF/CUE PAUSE STOP4 51 2 36710 9 811ORIGINALUses of Switches/Sockets (see diagram)TEACHER VOLUME (1)This sets the playback volume of the Teacher track on headsets. Whenin TEACHER RECORD, from a controller, it controls the level of theprogramme material on the headsets.STUDENT VOLUME (2)This sets the playback volume of the Student track on the headsets andalso the level of the side-tone from the boom microphones.TONE CONTROL (3)This adjusts the overall tone of the cassette playback on both teacherand student tracks.MASTER HEADSET SOCKET (4)This socket must always be used first when headsets are connected.HEADSET SOCKETS (5)Up to six sets of 1931 headsets (headphones with boom microphones)can operate together. The 3904 may be used for individuals, pairs orgroups of up to six students. It is essential that the MASTER (4) socketis always used. Failure to use this socket or to push the plug fully homemay result in intermittent side-tone.CALL TEACHER (6)Can be used to call for attention when connected to Coomber 901controller. Press and hold, the power LED will blink to confirm theoperation.EXTERNAL KEYBANK (7)This enables control of the cassette mechanism to be made using aremote keybank.TEACHER RECORD INDICATOR (8)This shows that the TEACHER track is in record mode, the STUDENTTRACK INDICATOR (9) will also illuminate indicating that the STUDENTtrack is being erased.STUDENT RECORD INDICATOR (9)This shows that the STUDENT track is in record mode. The TEACHERtrack is unaffected and is in playback mode.POWER ON INDICATOR (10)This illuminates when a headset is connected to the MASTER headsetsocket (4), the cassette mechanism is operating or a 901 controller isconnected and switched on (3904-24 only). It will blink when the callteacher button is pressed, or when the rechargeable battery requirescharging (3904/R only).EJECT BUTTON (11)Opens the cassette door for tape insertion or removal. It only operateswhen the cassette is stationary, i.e. in the STOP or PAUSE modes.Cassette Safety Tabsa) Protecting your Teacher Track recordings only. To protect yourteacher track recordings, ensure that the safety tab on the lefthand side of the cassette has been removed. Student trackrecordings can still be made.b) Protecting both Teacher Track and Student Track recordings. If youremove the safety tab from the right hand side of the cassette, norecordings can be made and both Teacher and Student Trackrecordings are protected.NOTE if the light in the RECORD key flashes 3 times, you are trying toenter RECORD on a cassette that has been protected.Coomber 1931 HeadsetsYou are recommended to use COOMBER 1931 Headsets, a usefulfeature being that the integral boom microphone may be switched offby swinging it upwards away from the mouth towards the headband.Note: No internal loudspeaker is fitted to the 3904.Connection to 901 Teacher controller unitOn the right hand side of the recorder is an 8 pin DIN socket forconnection to a Coomber 901 Controller.Trapped Cassette Tapes?The electronic tape mechanism is solenoid controlled. If the power isturned off while in PLAY/PAUSE modes, the EJECT button will notoperate and the cassette tape will remain jammed in the machine -apparently faulty. THIS IS NOT THE CASE. Having had the power cutoff in mid-flow, the solenoids have simply remained locked in position.To correct the problem, switch on the 3904 at the mains plug, or byreconnecting it to the 901 controller (3904-24 model). A clatteringsound will be heard as the solenoids reset themselves in the restposition. You will now be able to remove the cassette.SAFETY & GENERAL INFORMATIONHeadsets: For personal safety and comfort connect headsets into equipment, turn volumedown and then switch on before placing headsets over ears. For safety use only 600 ohmheadsets (i.e Coomber type 1931).Environments: The equipment should not be exposed to dust, moisture, water, chlorine andother corrosive substances in normal use or during storage. It will cause damage to this equipment.Swimming pool atmospheres: are very hostile to all electro-mechanical equipment (e.g. steelrusts and rubber perishes). Equipment returned for repairs showing evidence of use in adverseenvironments may, at our discretion, be charged for even during the 12 month warranty period. Rechargeable battery replacement must be carried out by a competent qualified technician. The disposal of batteries (rechargeable or otherwise) where used in Coomber equipmentshould be discarded in accordance with local regulations. Do not cover the ventilation openings with any items (e.g. newspaper, fabrics etc.) Naked flames, such as lighted candles, should not be placed on or near the apparatus. The apparatus should not be exposed to dripping or splashing. No objects filled withliquids, such as vases, should be placed on or near the apparatus.European Safety Standard: All Coomber equipment complies with EN60065. Any localrequirements for use of this equipment should be taken into account.Class II construction – electrical safetyMains VoltageUK & EEC: 220-240V 50Hz Mains Cable: Line – Brown, Neutral – BlueUSA: 110-120V 60Hz Mains Cable: Line – Black, Neutral – WhiteIsolate from mains supply when not in use by removing the plug from the wall socket.Mains Plug: The mains cable fitted to this equipment is already provided with a moulded plug. Ifanother plug type is required, follow instructions from the plug manufacturer, or seek advicefrom a qualified person. DISPOSE OF ORIGINAL PLUG SAFELY. DO NOT RE-USE.Mains Plug fuse rating: 3Amp to BS1362 (applicable in UK)Model type and rating information is located on a label on the base of the product.Additional Technical Information: If you require any further help or information, or ifany point is not clear, then please telephone 01905 342070 quoting your model number andserial number (located on a label on the rear of the product). Our Technical Department wil
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Category: Sound and Vision:Home Audio and HiFi Separates:Cassette/Tape Players
Location: Coventry