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III. 

CONTROLS  AND  CONNECTION  TERMINALS 

1. 

AM  RANGE  AND  POWER  SWITCH 

POWER  OFF- Electricity  turned  off. (At all  other positions,  power  is  on) 

SOFT- Listen  at  this  position  when  there  is  much  disturbance  (Medium 

Wave). 

HI-FI- Even  the  high  tones  are  clearly  and  faithfully  reproduced. 

SW- For  shortwave  broadcast. 

2. 

VOLUME 

The  sounds  of  the  left  and  right  speakers  can  be  adjusted  simultaneously. 
Turn  clockwise  to  increase  volume. 

3. 

LOUDNESS  CONTROL 

OFF- When  the  volume  is  relatively  high. 
ON- If  adjusted  to  this  position  when  the  volume  is  low,  the  bass  and 

treble  sounds  come  out  automatically  and  produce  a  rich  tone  that  gives 
you  a  feeling  of  actually  being  at  the  source  of  the  broadcast. 

4. 

RUMBLE  FILTER 

OFF - When  there  is  no  low  frequency  disturbance. 
ON- Irritating  low  frequency  disturbance  can  be  eliminated  by  turning 

to  this  position 

5. 

BASS  CONTROL 

The  low  level  tones  of  both  left  and  right  speakers  can  be  adjusted 
simultaneously.  Turn  clockwise  to  boost. 

6. 

TREBLE  CONTROL 

The  treble  tones  of  both  the  left  and  right  speakers  can  be  adjusted 
simultaneously.  Turn  clockwise  to  boost. 

7. 

BALANCE  CONTROL 

This  knob  is  for  the  purpose  of  balancing  the  left  and  right  speakers. 
Turn  counter-clockwise  to  boost  the  volume  of  the  left  speaker  and 
clockwise  that  of  the  right  speaker. 

8. 

FM  STABILIZER  (FM  AFC) 

OFF- Select  FM  station  with  switch  at  this  position. 

ON- Listen  with  switch  at  this  position  after  selecting  the  station. 
NOTE- It  has  no  connection  with  AM  or  shortwave  broadcasts, 
recording  or  tape  reproduction. 

9. 

SPEAKER  SWITCH 

Employed  when  a  stereo  head  phone  is  used. 

OFF- Shuts  off  the  sound  from  the  speaker 
ON - Turns  on  the  speaker  (normal  position) 

10. 

SELECTOR  SWITCH 

A  switch  to  select  the  different  sources  such  as  radio,  recording,  FM 
stereo,  etc. 
AM-AM2  ....... . 

FM-AM2 

PHONO 

AUX  .. 

FM MPX 

For  receiving  medium  wave  stereo  broadcasts. 
For  listening  to 

FM, 

ordinary  and  shortwave 

broadcasts. 

For  listening  to  stereo  and  monaural  record  perfor­
mances. 
For  using  "AUX"  terminal,  or  for  tape  recorder 

playback. 

For  using  a  multiplex  adaption  to  listen  to  a  FM 

stereo  broadcast. 

www.hifiengine.com

Summary of Contents for W-38

Page 1: ...INSTALLATION AND OPERATING MANUAL DELUXE STEREOPHONIC AMPLIFIER AM AM FM SW Tuner Combination MODEL W 38 DISTRIBUTOR www hifiengine com ...

Page 2: ...joy on the spot listening by adjusting the Loudness Control 5 Rumble Filter Irritating low level motor rumbling disturbances can be filtered out with the Rumble Filter 6 RP Cord Tape Recorder Terminal The W 38 is equipped with a special socket of the kind agreed to among the major tape recorder manufacturers a RP cord terminal by which recording and reproduction are possible using only one connect...

Page 3: ... speaker midway between the two making the connections as shown in Diagram 2 By supplementing the volume in this way you can enjoy a very natural sterephonic reproduction RIGHT SPEAKER IMP SELECT LEFT SPEAKER RIGHT SP PHASE POSITION OF SPEAKER PHASE CENTER DIAGRAM 2 so won VOL CONT LEFT LEFT SPEAKER 3rd SPEAKER DIAGRAM 3 RIGHT SPEAKER If you decide to use three speakers first adjust the phasing of...

Page 4: ...MINAL DIAGRAM 4 DIAGRAM 5 IMPORTANT Do not place the antenna line near fluorescent lighting which causes disturbance in the form of a buzz Antenna for Listening to a FM Broadcast Connect the FM antenna to G and FM as shown in Diagram 1 Turn the horizontal part of the T shaped ant nna towards the direction in which you can receive optimum reception and then pin both ends to either the ceiling or wa...

Page 5: ...h a RP cord you can reproduce stereo recording merely by plugging the cord into the socket provided for this purpose Recording with a tape recorder Connect the lead lines from the LINE IMPUT terminals of the tape recorder to the terminals marked TAPE REC In the case of monaural recording either one top or bottom of the terminals may be used Playback of tape recorder Connect the lead line from the ...

Page 6: ...lockwise to boost 6 TREBLE CONTROL The treble tones of both the left and right speakers can be adjusted simultaneously Turn clockwise to boost 7 BALANCE CONTROL This knob is for the purpose of balancing the left and right speakers Turn counter clockwise to boost the volume of the left speaker and clockwise that of the right speaker 8 FM STABILIZER FM AFC OFF Select FM station with switch at this p...

Page 7: ...ereo and shortwave broadcasts 14 LEFT CHANNEL MAGIC EYE When you select the station with the TUNING 1 knob see that the magic eye expands to its maximum 15 RIGHT CHANNEL MAGIC EYE When you select the station with the TUNING 2 knob see that the magic eye expands to its maximum 16 SOCKET FOR TAPE RECORDER WITH RP CORD 17 RIGHT SPEAKER TERMINAL DIAGRAM 8 18 IMPEDANCE SWITCH Switch to correspond with ...

Page 8: ...ectricity is on 2 VOLUME CONTROL 3 LOUDNESS CONTROL 4 RUMBLE FILTER 5 BASS CONTROL 6 TREBLE CONTROL 7 BALANCE CONTROL 9 SPEAKER SWITCH 2 RECORD PLAYBACK WITH STEREO PICKUP 10 PHONO 11 STEREO or REV 3 PLAYBACK OF TAPE RECORDER 10 AUX 11 STEREO OR REV Stereo reproduction LEFT When the left input terminal is used for monaural listening 4 RECORDING WITH A TAPE RECORDER The exact sounds coming out the ...

Page 9: ...M2 11 STEREO or REV 12 FM Station Selection 13 AM Station Selection 8 Select FM station at OFF position and listen at ON 11 STEREO HEADPHONE USE 21 Plug in headphone jack 9 OFF To eliminate speaker sound ON To bring out the speaker sound DIAGRAM 9 V POINTERS 1 It takes approximately 50 seconds for the sound to emerge from the recorder after switching on the power A direct current flows into the fi...

Page 10: ...t hum 4 HOWLING When the record player is placed directly on top of the speaker case or close by it the sound from the speaker travels to the player pickup needle and causes howling It then becomes impossible to raise either the volume or boost the bass tones Adjusting the amplifier will not help since it is not responsible for the howling In order to avoid howling keep the player case and speaker...

Page 11: ...0dB 94Mc AM 46dB 1Mc Mag 3mV X tal 36mV input required for S N 20dB quieting AUX 225mV input required for 9 watt output SOc s f 10 5dB lOKc 8dB 1 8dB 8 5dB 50c s 8dB 20c s 15dB 50c s 15dB 10Kc 4dB Volume control at 30dB 14 watts per channel undistorted output 10 watts or 28 watts in total Harmonic Distortion less than 2 Within 20c s 50Kc 0 5dB output at 500mW RIAA MAG 30mV AUX 4mV volume maximum t...

Page 12: ...www hifiengine com ...

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