User manual NAKAMICHI BX300

[. . . ] NakamichiBX-3t Discrete Deck HeadCassette Manual Owner's I R I 5 K FE L E T T R I C O 5HOTK. DOIIOTOPEN I - CAUTIO TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER(OR BACK). NO USER-SERVICEABLE PARTSINSIDE. REFER SERVICING QUALIFIED TO SERVICE PERSONNEL T h e l i g h t n i n gf l a s hw i t h a r r o w h e a d s y m b o l w i t h i na n e q u i l a t e r atlr i a n g l e i, s , intendedto alert the user of the presence " o l u n i n s u l a t e dd a n g e r o u s o l t a g e " v w i t h i nt h e p r o d u c l ' sc n c l o s u r o ; h a l m a y l b e o f s u f fi c i e n tm a g n i t u d e o c o n s t i t u t e t a risk of electric shock to persons. T h e e x c l a m a t i o n o i n tw i t h i na n p e q u i l a t e r atlr i a n g l ei s i n t e n d e dt o a l e r t lhe user of the presenceof imoortant ( o p e r a t i n g n d m a i n t e n a n c es e r v i c r n g ) a I n s t r u c t i o n sn t h e l i t e r a t u r e i. [. . . ] (13) Input Level Controls Serveto adjust the recordinglevel for left and right channols. (14) Bias Tune Control Servesfor fine adjustmentof the bias current. 6 ) (15) MPX Filter Switch Usedto suppress the 19-kHzmultiplex carrier signal, which could interfere with properDolby NR operationwhen recordingfrom FM stereo broadcasts. other times, the switch should At be set to "Off". (16) Tape Selector Switches In recording, the correct switch must be selectedlor the tape in use. 6 ) (1 7) Equalizer Switch Servesto select correct equalization in recordingand playbackfor the tape in use. 6 ) (18) Monitor Switch For playbackof a tape and for olf-the-taoe monitoring duringrecording, this switch must be set to "Tape". For record level setting etc. , the switch must be set to "Source". This switch is also usedduringbias fine adjustment. (-p. 6 ) (19) Dolby NR Switches To use the Dolby NR system, set the upper switch to "On" and select either the B-type or the C-type system with the lower switch. The respecliveindicator lights up. I Dolby NR System This cassettedeck providesa choice betweenthe Dolby B-type and the Dotby C-lype noise reductionsystems. The Dolby B-type NR providesapproximately dB of 10 noisereduction the high frequencies. in The Dolby C-type NR is a further relined system, which achievesa S/N ratio improvement about 20 dB in the range of trom 2 kHz to 8 kHz, where noise is most readilyaudible, For playbackof a tape which was recorded with the B-type NR, set the Dolby NR switch to "B". I Record Level Setting For goodrecordings, is essential maintain it to a high signal-to-noise ratio. lf the recordlevel is set too low tape hiss will impairthe playbacksoundquality. it is set too high, the lf tape will be driveninto distortion. Referto the chart belowto set recording levels. r+d8- Recording (1) Set the Tape Selectorswitches and the Equalizer switch to the required positions 'n for the tape ut". 6) (2) Select the desired positionof the Dolby NR switches. For recordingfrom FM broadcasts, the MPX Filter switch to set "On". (3) Simplypress the Recordbutton to put the deck into the record-standby(record/ pause)mode. (4) Set the Monitorswitch to "Source" and adjust the recordinglevel with the Rec Levelcontrols while watchingthe indication of the Peak Level meters. (5) Press the Play button to start recording. (6) To check the quality ol the recordingin progress, you can monitorthe playback signal by setting the Monitorswitch to "Tape". In the "Source" position, the input signal belore recordingis heard. For short-terminterruptionof recording, press the Pausebutton to set the deck to the record-standby mode. To resume recording, press the Play button again. | !| --Metat rape Adjust recordinglevls so that these I l_ , _l{ indicators(approx. +8 dB) tight up I i , , :{ L :i on signal peaks. l- I \occasionally -Normal. Position, " _!t ij Ghrome-PosltionTapeg Ii Adjusl recordinglevetsso that these | !_ , " _!| " (approx. + 5 dB) tight up incticators I !_ _! [. . . ] Tape Selectorswitches and/or Equalizer switch not set correctly. 1q 13. Select correct positionsfor tape in use. 1a Hum heard during recordingor playback. 1 7 . Stronginduction lields near deck. Keep deck away from amplifier, transformers, fluorescentlamps, etc. 1 n Signal cable or connectorgroundingfaulty. [. . . ]