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-6-

 

No sound 

Is the power cable plugged into a socket? 

Is the power switch set to “ON”? 

Does LED on the front panel light up ? 

Is there anything wrong with the connecting cable? 

If the unit is connected to a pre-amplifier or integrated amplifier, is the SOURCE selector 

switch set to the correct position?  
Refer to the instruction manual of your amplifier. 

 

Sound is Distorted:

 

Is the power voltage normal? 

Too high volume level may cause distortion.  

Too high volume is bad for your devices and health. 

In rare cases, when a device connected to a terminals 

(

amplifier etc.

)

 is not operating, 

input impedance extremely goes down and signals from an audio player device may be 
distorted.   
In this case, unplug a device connected to PARALLEL OUT terminals. 
The distortion does not occur if the volume of SRM-400S 

(

or other STAX SRM series

)

 is 

turned to zero. 

 

Unbalanced sound between right and left channel: 

Is the input signal normal? 

Are there any contact failures of a cable? 

● 

When raising volume slowly from zero, sound may not start at the same time from left and 

right channels. This is normal and not a failure. 

Correct this unbalance by adjusting each section of the volume knob. 

 

Hum noise is heard 

Is a input terminal properly connected? 

Hum noises may occur when a grounding wire comes off. 

In case that “boon” hum noises are emitted, connect a grounding wire to a ground termi-

nal or metal parts of other devices.  
Also you can connect a grounding wire to metal parts of aluminum sash windows. 

Are there any contact failures? 

Because the main material of the chassis is nonmagnetic aluminum alloy, multiple devices 

may induce hum noises.  
Are devices containing large transformers or microwaves near the unit?  
Keep distance between the devices. 

Hum noises may be emitted for instance just after the power is turned off.  

This is not a breakdown. 

 
If there are any troubles and breakdowns, please contact the dealer from which it was pur-
chased or a nearest distributor.

 

6. Troubleshooting

 

Summary of Contents for SRM-400S

Page 1: ...ntains high voltage circuitry It is dangerous to disassemble or to remodel it Please observe Don ts R User s Manual Thank you for purchasing STAX Driver Unit for Earspeakers SRM 400S Please read this instruction manual carefully to enjoy sound performance and functions of SRM 400S for a long time After reading this manual be sure to keep it with the warranty ...

Page 2: ... specified power supply Do not modify forcibly bend twist or pull the power cable Do not block the ventilation holes on the top cover for heat dissipation Do not insert metal liquid or objects inside of the unit Do not touch the earspeaker output terminal If the unit emits unusual smells or smoke stop using immediately and turn off the power This may cause fires and electric shocks Do not attempt ...

Page 3: ...C OUT terminal of a pre amplifier or integrated amplifier connect to a PRE OUT terminal Another way to connect To connect to a audio player device with a mini stereo jack Your stereo mini plug to RCA plug conversion cable or conversion plug can be connected to the unit Set the volume of your audio player device to the normal position And adjust the volume of SRM 400S 2 for use 3 3 Precautions for ...

Page 4: ...t is set to RCA Caution This unit cannot switch input signals Unplug an unused cable RCA input terminals Connect an audio player device with RCA output terminal PARALLEL OUT terminals Throughout terminals Using PARALLEL OUT terminals signals from an audio player device are directly outputted Use PARALLEL OUT terminals to connect other amplifier or driver unit Unplug the cable when a device connect...

Page 5: ...this switch position Use PARALLEL OUT terminals Connect the unit to REC OUT or PRE OUT of a pre amplifier or an integrated amplifier Directly connect to source equipment RCA Connect RCA XLR input terminals cannot be simultaneously connected Be sure to unplug an unused cable Voltage in your country Additional information about PARALLEL OUT terminals To use loudspeakers Connect a RCA cable to an AUX...

Page 6: ...hannel Is the input signal normal Are there any contact failures of a cable When raising volume slowly from zero sound may not start at the same time from left and right channels This is normal and not a failure Correct this unbalance by adjusting each section of the volume knob Hum noise is heard Is a input terminal properly connected Hum noises may occur when a grounding wire comes off In case t...

Page 7: ... condensing Dimension 195 W 102 H 346 D mm Main body Include VR Knob 19 GND terminal 11 376 D mm Weight 3 4Kg Others equipped with through output RCA Specifications and appearance are subject to change without notice for improvement This product is adjusted to mains voltage depending on each country Accessories 1 1 1 1 Power cable RCA cable Warranty card User s manual Care and cleaning Pull out po...

Page 8: ...C Printed in Japan 21 03 1K MP STAX LTD P No 80467 10119 R STAX LIMITED Tel 81 49 293 1891 Fax 81 49 293 1892 URL https stax international com 3798 1 Shimonanbata Fujimi shi Saitama ken Japan 354 0004 ...

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