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15

Settings Menu 

The LS28SE has been designed with a 

simple,  intuitive menu to allow adjustment 

of  the various features of the preamplifier.  

To adjust the settings, press the ‘MENU’  

button on the remote or front panel.  

If no further action is taken with the  

preamplifier or remote for five seconds,  

the LS28SE reverts back to its normal  

operation screen. Continuing to press  the 

‘Menu’ button will toggle you  through the 

different setting options:   

While a menu item is displayed, press  

‘ENTER’, followed by rotating the  volume 

knob on the front panel, or  using the 

volume up/down buttons on  the remote 

to adjust the settings of  that particular 

selecton. After making  the appropriate 

change, pressing the  ‘ENTER’ button will 

confirm the new  setting, and the display 

will show ‘OKAY’  for five seconds before 

reverting back  to the normal operation 

screen.  

Note 

For the following menu settings, please 

refer  to the menu tree on page 14 for 

examples  of the front panel display. 

Both the ‘MENU’ and ‘ENTER’ buttons 

(found  on the front panel and remote), as 

well as  the volume knob (or the up/down 

volume  buttons on the remote) are used 

to make  changes to the menu settings. 

Note that  the ‘MENU’ button can also be 

used to  back out of a menu selection, 

returning to  the main settings options. 

Auto Shutdown 

The LS28SE is equipped with an auto  

shut off feature, designed to turn the  

preamplifier off after a period of time  

during which it is not used. The auto shut  

off feature senses any interaction with  

the preamplifier, such as button presses,  

changing the volume, remote usage, etc. 

To change/disengage the auto shutdown  

feature, press the ‘MENU’ button  until the 

‘AUTO SHUTDOWN’ screen  is displayed. 

Using the volume knob  on the front 

panel, or the volume up/ down buttons 

on the remote, you have  the option for 

‘off’ (no auto shutdown)  or 1-8 hours. 

Once you have made a  selection, press 

‘ENTER’ to confirm. The  display will show 

‘OKAY’ before reverting  back to the 

normal operation screen. 

Note 

The auto shutdown feature is not in the  

signal path of the preamplifier and has 

no  deleterious sonic effect on music 

playback.  

Содержание ARCLS28SE

Страница 1: ...H I G H D E F I N I T I O N LS28SE...

Страница 2: ...There is only One Reference...

Страница 3: ...begin listening however please take a few minutes to read through this guide for useful information concerning the operation of your new phono preamplifier Once installed please allow an appropriate b...

Страница 4: ...ote about Vacuum Tubes Back Panel Connections Input Connectors Output Connectors A C Power Connection RS 232 IR Input and 12v Trigger Front Panel Controls and Display Start Up Shut Down Break In Front...

Страница 5: ...the same type and rating as specified at the fuse holder see page 19 for fuse information This unit is RoHS compliant The LS28SE has automatic muting to help protect system components in the event of...

Страница 6: ...lowing instructions Remove all screws fastening the top cover Carefully remove each vacuum tube from its protective foam and match its location V number written on the base of the tube to the V number...

Страница 7: ...s provided Audio Research recommends a minimum of 6 8 inches 15 20 cm of clearance above the LS28SE to maintain proper ambient operating temperature The ambient operating temperature should never exce...

Страница 8: ...BAL SE main outputs are provided The outputs are connected in parallel If using both outputs simultaneously the combined input impedance of the amplifier s being driven by the LS28SE must be greater t...

Страница 9: ...stem to be connected to the LS28SE for control purposes utilizing a standard mono 1 8 connector 12V Trigger Out The 12V DC trigger out jack provides the ability to remotely turn on and off the preampl...

Страница 10: ...10 Operation Input Select Vacuum Fluorescent Display Volume Menu Enter used with Menu Mono Stereo Invert Phase Mute Power On Off Front Panel Controls...

Страница 11: ...l flash on the display until the warm up cycle is complete Select input source and adjust the volume as necessary Shut Down Activate MUTE function Turn off power amplifier s Press Power switch to off...

Страница 12: ...eamp indicated by active display win dow The LS28SE requires approximately 45 seconds to warm up this time is re quired to stabilize the vacuum tubes See Start Up Procedure on page 11 for details Menu...

Страница 13: ...e eight inputs available on the LS28SE Display Brightness Adjustment The front panel display has six brightness settings as well as the ability to dim the display completely To change the brightness u...

Страница 14: ...14 Settings Menu Menu Tree Tube Hours Processor Mode Auto Shutdown Volume Reset Display Brightness Input Naming...

Страница 15: ...front panel display Both the MENU and ENTER buttons found on the front panel and remote as well as the volume knob or the up down volume buttons on the remote are used to make changes to the menu set...

Страница 16: ...ected input on the bottom line When using the input selected for processor mode note that in place of the volume number on the operation screen a pass through symbol will be shown Warning When process...

Страница 17: ...hem to zero after a power off cycle When volume reset is set to OFF the LS28SE will also remember settings after a power cycle To change the status of the volume reset press the MENU button until the...

Страница 18: ...o not tamper with a component or part inside the unit Even with the power turned off a charge remains in the energy storage capacitors for some time Cleaning To maintain the new appearance of this pre...

Страница 19: ...ed the responsibility for warranty of Audio Research products sold by them The specific terms and remedies for fulfillment of the Limited Warranty may vary from country to country Warranty service sho...

Страница 20: ...Maximum Input 16V RMS BAL 8V RMS SE Rated Outputs 2V RMS 1V RMS SE into 200K ohm balanced load maximum balanced output ca pability is 17V RMS at less than 0 5 THD at 1kHz Crosstalk 105dB or better at...

Страница 21: ......

Страница 22: ...out notice 2020 Audio Research Corporation Reproduction of this document in part or whole is expressly forbidden without written consent from Audio Research Corporation 6655 Wedgwood Road North Maple...

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