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VACUUM TUBE STEREO POWER AMPLIFIER MQ-88uC

7

Before connecting

Before connecting other devices, connect the jack side of the 
accessory power cable to the AC inlet of this unit.

Before connection is made, turn off the main power switch 
of this unit and the power of all other connected devices to 
prevent accidents due to noises generated unexpectedly.

How to connect power supply

Use the accessory power cable and insert the AC plug in the 
outlet on the wall in the room where the unit is installed.

How to connect a CD player, control 
amplifier

Connect the output terminal of a control amplifier to the input 
terminal with 2 (R and L) pin-plug cables.
When using a source device with the volume adjusting func-
tion, such as a CD player, connect to the VARIABLE input 
terminal. When using a source device with the volume con-
trol, such as a control amplifier, connect to the DIRECT input 
terminal.
Select DIRECT or VARIABLE input with the input selector.

How to connect speakers

Connect the left-channel speaker to the SPEAKERS-L 
terminal of this unit and the right-channel speaker to the 
SPEAKERS-R terminal.
Securely connect the 

!

 terminal of the speaker system to 

the red speaker terminal (

!

 4Ω, 

!

 8Ω, or 

!

 16Ω) of this unit 

according to the impedance of the speakers to be used and 
the 

@

 terminal of the speaker system to the black speaker 

terminal (

@

 COMMON) of this unit.

If the 

!

 or 

@

 terminal is reversely connected to either of the 

right or left of the speaker system, the signal phases repro-
duced from the right and left of the speaker system are also 
reversed. In such a case, be aware that the sound level in 
the low range will be reduced and the acoustic stability will 
worsen, and thus the normal stereo playback is not achieved.

If the impedance of the speakers to be used is other than 4Ω, 
8Ω, or 16Ω, connect the terminal with an impedance closest 
to the impedance value of the speakers.
The range of the impedance of the speaker to be connected 
should be within the range of 4Ω to 16Ω.

Summary of Contents for MQ-88uC

Page 1: ...Owner sManual VACUUM TUBE STEREO POWER AMPLIFIER MQ 88uC...

Page 2: ...Contents Precautions 1 Features of This Unit 2 Names and Functions 4 Connections 6 Block Diagram 8 Specifications 9 Before Asking for Repair Service 10...

Page 3: ...y connected noises including hum may be generated resulting in an adverse S N ratio Cautions in connecting speakers When making speaker system connections be sure not to cause short circuiting between...

Page 4: ...pe circuit for the driver stage has been equipped and KT88 an output tube has been used in a way of triode connection Impedance matching Speaker terminals dedicated for 4 8 and 16 are equipped which c...

Page 5: ...stom made parts LUXMAN s original custom made parts for generating high sound quality are plentifully equipped Wide pitch RCA terminals Wide pitch RCA terminals are used to allow large sized RCA cable...

Page 6: ...power is turned off the OPERATION indicator will stay on for a while but it is not a malfunction 3 Volume control VOLUME This function is effective only when a source component such as a CD player is...

Page 7: ...RIABLE DIRECT Variable or direct input can be switched Select the name of the terminals connected to the device to play back by operating this switch When switching the input be sure to turn off the p...

Page 8: ...6 Connections CONTROL AMPLIFER CD PLAYER RECORDER CD SACD PLAYER ANALOG PLAYER CD PLAYER CD SACD PLAYER L R SPEAKER SYSTEM B When the speaker impedance is 8...

Page 9: ...terminal Select DIRECT or VARIABLE input with the input selector How to connect speakers Connect the left channel speaker to the SPEAKERS L terminal of this unit and the right channel speaker to the...

Page 10: ...8 4 KT88 CH SW 3 6K ECC83S ECC82 KT88 KT88 KT88 KT88 ECC82 ECC83 KT88 Power Transformer VR TRANS OUTPUT GND COM BIAS BIAS OUTPUT TUBE ADJUSTMENT BIAS BIAS V4 BIAS V3 BIAS V2 BIAS V1 BIAS V2 V1 2 B 3...

Page 11: ...Speaker terminal x 1 line 4 8 and 16 independent Supplied functions Front panel Operation switch Volume control Rear panel Input terminal Input selector Speaker terminal AC inlet Circuiting system Mul...

Page 12: ...AC inlet or it is not inserted completely Securely insert the power plug in the AC inlet No sound is generated for both left and right channels The volume control is set at the minimum level Rotate th...

Page 13: ...VACUUM TUBE STEREO POWER AMPLIFIER MQ 88uC 11 MEMO...

Page 14: ...12 MEMO...

Page 15: ......

Page 16: ...LUXMAN CORPORATION JAPAN AG00987E73A Printed in Japan 1 3 1 Shinyokohama Kouhoku ku Yokohama shi Kanagawa 222 0033 Japan...

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