LOTOO LS50 User Manual
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LOTOO LS50 User Manual

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USER MANUAL LOTOO LS50

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Summary of Contents for LOTOO LS50

  • Page 1 USER MANUAL LOTOO LS50...

  • Page 2: Table Of Contents

    CONTENT MAIN FEATURES ............................ - 5 - LS50 STANDARD PACKAGE ........................- 6 - IMPORTANT ............................- 7 - 1 SET UP 1 PARTS DESCRIPTION ........................- 9 - 2 BATTERIES ............................- 12 - 3 HOLD ..............................- 14 - 4 SWITCH ..............................
  • Page 3 8 VOLUME OPERATED RECORDING (VOR) ..................- 28 - 9 MICROPHONE POWER SUPPLY ..................... - 30 - 10 NOISE CUT ............................- 31 - 3 PLAYBACK 1 PLAYBACK WINDOW ........................- 33 - 2 BASIC OPERATION ........................... - 34 - 3 ADD BOOKMARKS DURING PLAYBACK ..................

  • Page 4: Trouble Shooting

    3 FILE TRANSFER ..........................- 57 - 6 TROUBLE SHOOTING 1 SYSTEM TIPS ............................ - 61 - 2 FAQ ..............................- 64 - 7 ADDITIONAL INFO 1 SPECIFICATIONS ..........................- 67 - 2 SAFETY STATEMENT ........................- 69 - - 4 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 5: Main Features

    MP3 recording and playback formats, and audio files can also be copied to other MP3 devices for playback. 40 HOURS, EXTREMELY LONG RECORDING TIME The LS50 provides 40 hours of continuous recording using 2 “AA” batteries. 4 GB, MASS STORAGE STRONG METAL CASING The metal casing is solid and durable, while the matt surface finish brings not only an elegant look, but is also comfortable to hold.

  • Page 6: Ls50 Standard Package

    LS50 STANDARD PACKAGE The LS50 standard package includes the following items. When you purchase the recorder, please make sure that the package is complete. Wrist strap Foam Windshield User manual disk LS50 Digital Recorder - 6 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 7: Important

    Trademarks Notices Lotoo is the registered trademark of InfoMedia. IBM and PC/AT are registered trademarks of the international business recorder company. Microsoft and Windows are Microsoft Corporation’s registered trademarks in America and other countries.
  • Page 8 This chapter introduces each part of LS50 and some useful tips, along with several preparatory operations such as installing batteries, power-on / off and time-date setting, etc. - 8 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 9: Parts Description

    1 PARTS DESCRIPTION 1. BUILT-IN MIC (LEFT CHANNEL) ( 1 ) 2. BUILT-IN MIC (RIGHT CHANNEL) ( 2 ) 3. LCD SCREEN ( 3 ) 4. RECORDING LED ( 4 ) 5. DISP/DEL key ( 5 ) 6. FILE/MENU key ( 6 ) 7.
  • Page 10 16. NOISE CUT ( 16 ) 17. SPEED ( 17 ) 18. HOLD ( 18 ) 19. LOUDSPEAKER ( 19 ) 20. BATTERY BOX ( 20 ) 21. EXTERNAL MIC JACK ( 21 ) 22. LINE IN JACK ( 22 ) 23.
  • Page 11 Notes 1/2: The LS50 uses high sensitivity differential microphones which ensure excellent recording. 128 x 64 resolution LCD display. Click the <DISP/DEL> button to show more file information during playback. A long press of the <DISP/DEL> button, enters the delete menu enabling files and bookmarks to be deleted.

  • Page 12: Batteries

    The LS50 uses 2 “AA” dry or rechargeable batteries. The battery type can be chosen through “BATTERY TYPE” in the “SYSTEM” menu. Please choose the correct battery type according to battery so that LS50 can display the correct remaining power level. Installing batteries 1.
  • Page 13 Battery Level Indication Level Symbol Dry or rechargeable battery Sufficient About 30% remaining About 15% remaining About 5% remaining Removing batteries 1. Slide open the battery compartment cover 2. Take out 2 “AA” batteries 3. Close the battery compartment cover Warning! •...

  • Page 14: Hold

    Sliding HOLD to [ON] will lock all keys to prevent activation of the keys accidentally during recording or playback. Once the keyboard is locked, it doesn’t work no matter what keys you press, the screen will show “HOLD”. To UNLOCK the LS50, please slide HOLD to [OFF]. HOLD [ON]: Keys are locked HOLD [OFF]: Keys are unlocked.

  • Page 15: Switch

    Long press to turn the recorder OFF and a short press to turn ON. If HOLD is in the [ON] position you cannot switch the LS50 ON or perform other operations, screen shows “HOLD”. Please slide HOLD to [OFF] and retry.

  • Page 16: Date & Time

    5 DATE & TIME Please set up DATE & TIME before the first use or following a reboot or long periods without use. Setting correct system DATE & TIME, will guarantee the accuracy of record time during recording. You can check current time during recording. 1.
  • Page 17 Current time Note: Creation time of recorded file is the initial recording time. The creation time of external files or music, not recorded by the LS50, is stored as file attributes. - 17 - Beijing InfoMedia Electronic Technology Co., Ltd...
  • Page 18 The LS50 has many recording functions including various PCM, MP3 recording formats, manual & automated gain control, VOR, NOISE CUT and so on. The LS50 can be adapted to any recording situation. This chapter explains in detail how to record.

  • Page 19: Record

    MUSIC Folder: 12 Recording file format 2 Noise Cut External MIC: 6 USB 13 Bookmarks doesn’t NOISE CUT active, Line Input: LS50 14 Run status this symbol appears. 5 Current Folder allow charging Record: 3 VOR / AGC A Folder:...

  • Page 20: Basic Operation

    2 BASIC OPERATION 1. CHOOSE RECORDING FILE FORMAT · Click <FILE/MENU> button, a list of folders will pop-up. · Click < >< > buttons to choose the target folder and click < > to confirm. ■ · Click < > or <FILE/MENU> button to exit. 2.
  • Page 21 Note: The LS50 has 6 built-in folders, namely, A, B, C, D, E and MUSIC folders. You can choose any as the main storage folder, the default folder of the recorder is [Folder A]. Please select as necessary. The LS50 doesn’t allow new folder creation and it cannot recognize folders copied from a computer. If you need to copy music files from a computer and listen to them on the LS50, please put the music files into root directory of 6 folders.

  • Page 22: Adding Bookmarks During Recording

    3 ADDING BOOKMARKS DURING RECORDING The LS50 allows bookmarks to be added during record or playback. Each file can have up to 3 bookmarks. Click < >< > button to jump quickly to the next marked position during playback. ●...

  • Page 23: Levels

    4 LEVELS When large input gain is used, (i.e. the input signal level is very low) the LS50 can amplify the sound level of the recorded file effectively, thanks to the quality of the preamplifiers. However, larger input gain increases the background noise simultaneously, which will affect the overall recording quality.

  • Page 24: Automatic Gain Control (Agc)

    5 AUTOMATIC GAIN CONTROL (AGC) The AGC will adjust gain automatically according to the volume of sound source. If the volume of sound is weak, AGC increases the gain automatically. When the volume of sound is loud, AGC reduces gain so that recording level will not exceed limits, to avoid distortion. 1.

  • Page 25: Change Recording Format

    6 CHANGE RECORDING FORMAT The LS50 supports, PCM and MP3 file recording formats. PCM is 48 KHz 16 bit WAV lossless stereo. PCM format files are larger, but have higher fidelity. MP3 format file has good recording quality, yet smaller capacity; they can be copied to other players at any time.
  • Page 26 The file format, sampling rates and bit rates of different recording formats are as follows: RECORDING FILE FORMAT FORMAT PCM ST Stereo WAV-16bit 48KHz 1536Kbps PCM MO Mono WAV-16bit 48KHz 768Kbps HQ ST Stereo 48KHz 320Kbps MQ ST Stereo 48KHz 256Kbps LQ ST Stereo...

  • Page 27: Stereo Or Mono Recording

    7 STEREO OR MONO RECORDING The LS50 has high quality built-in microphones that provide excellent recording sensitivity. The directivity of the microphones can be adapted by selecting MONO or STEREO operation. 1. Change recording format and choose STEREO or MONO.

  • Page 28: Volume Operated Recording (Vor)

    8 VOLUME OPERATED RECORDING (VOR) By monitoring the input sound level, the LS50 can switch to record mode automatically. The LS50 stops recording automatically when sound level drops below a certain pre-set level. When the sound level increases again, it restarts recording.
  • Page 29 7. VOR stop recording . If sound volume is lower than the pre-set level for 10 seconds, recording will stop and the LS50 returns to PAUSE RECORDING so that you can save disk space and reduce empty file content. ■...

  • Page 30: Microphone Power Supply

    9 MICROPHONE POWER SUPPLY Some external microphones require power to be supplied from the recorder. The LS50 can provide 3V power to supply external electret microphones. Please set this function when you need to turn on the power supply. 1. Long press on the <FILE/MENU> button to enter setting menu.

  • Page 31: Noise Cut

    10 NOISE CUT Turn on NOISE CUT to decrease low-frequency noise during record. Low-frequency noise, for instance, could be the low-frequency sound of the wind or the “hum” noise from an electrical device. 1. Turn NOISE CUT on the rear side to [ON]. .
  • Page 32 The LS50 supports, WAV, MPEG1-layerⅡ(MP2), MPEG1-layerⅢ(MP3) and WMA playback formats. There are various kinds of built-in playback functions, with specific signal processing ability, which can guarantee reproduction consistent with the originals during playback. Abundant EQ can add more colour to your music This chapter explains how to use the various playback functions.

  • Page 33: Playback

    1 PLAYBACK WINDOW Click on the <DISP/DEL> button to check the information concerning the file format. 1 Current Status 6 USB Playback: Play: 7 Battery Pause: Pause: 8 Creation DATE & TIME Stop: Stop: 9 Playback Time Speed playback: 2 EQ 10 File Name 14 Record Level Meter 3 Cycle Playback...

  • Page 34: Basic Operation

    2 BASIC OPERATION 1. SELECT THE Folder There are 6 built-in folders in the LS50 named [Folder A] [Folder B] [Folder C] [Folder D] [Folder E] and [Folder MUSIC] . Click on the <FILE/MENU> button and the folder list appears.
  • Page 35 > without letting go, then release button to stop forward. Note: . LS50 keeps PLAYBACK status when rewind/forward during PLAYBACK mode. . LS50 keeps PAUSE mode when rewind/forward under PAUSE status. . Rewind/Forward cannot work across tracks. - 35 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 36: Add Bookmarks During Playback

    Bookmarks can help you to note important points in files so that you can jump to them quickly during playback. Each recorded file in the LS50 can have up to 3 bookmarks. You can add bookmarks during record and playback processes.
  • Page 37 delete bookmark 1. Long press on the <DISP/DEL> button to show the delete popup menu. 2. Click on the < >< > button to select [Delete bookmark] and press the < > button. 3. Click the < >< > button to select [OK] and press the < > button.

  • Page 38: B Repeat

    4 A-B REPEAT 1. Click the < >< > button to select the file. 2. Click on < > to start playback. 3. Playback to the start of the portion to be repeated, click <A-B> to set the start point A. .

  • Page 39: Repeat Mode

    5 REPEAT MODE You can set the playback mode to three modes: [Sequency] , [Loop One] or [Loop] . 1. Long press on the <FILE/MENU> button to enter setting menu. 2. Click < >< > to select [Playback Setting] and then press the <...

  • Page 40: Playback Speed

    6 PLAYBACK SPEED Speed playback function of LS50 is based on specific digital processing system. The function can change playback speed naturally and keep the original sound at a time. The tone doesn’t increase or decrease noticeably so that the file sounds more natural and comfortable.
  • Page 41 7. Click < > to playback. . Playback status icon on screen prompts to speed playback. . Status icon displays: ■ 8. Click < > to stop. Hint: . During playback mode, long press <FILE/MENU> to enter [Playback Setting] to adjust [Playback Speed]. .
  • Page 42 There are various built-in EQ possibilities in the LS50. Appropriate EQ sounds mellow and make sound effects better. EQ modes in the LS50 are Normal, Classic, Fullbass, Jazz, Pop, Rock and Dance. 1. Long press <FILE/MENU> to enter setting menu.

  • Page 43: Use Speaker Or Microphone

    8 USE SPEAKER OR MICROPHONE USE BUILT-IN SPEAKER AND LISTEN TO RECORDINGS Set the [Speaker] option to [ON] in the [System Setting] menu, remove the 3.5mm headphone connector. Record or music plays through built-in speaker. SPEAKER USE MICROPHONE AND LISTEN TO RECORDING Insert 3.5mm microphone to headphone connector <...

  • Page 44: Delete File

    9 DELETE FILE 1. Long press <DISP/DEL> button to show the DELETE MENU. 2. Delete the file. .Click < >< > to select [Delete the file] and press < > button. .Click < >< > button to select [OK] and press < >...
  • Page 45 This chapter introduces the use of the settings menu in detail. You can set all record, playback and system settings through the settings menu. - 45 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 46: Operational Approach

    1 OPERATIONAL APPROACH 1. Enter menu . Long press <FILE/MENU> button to enter setting menu in STOP mode. . Long press <FILE/MENU> button to enter playback setting in PLAYBACK mode. 2. Up/down through menus . Click < > and scroll up to browse menu options. .

  • Page 47: Options

    2 OPTIONS Recording setting Format Set recording format. [PCM ST]: PCM Stereo Recording Mode [PCM MO]:PCM Mono R Recording Mode [HQ ST]:MP3 HQ Stereo Recording Mode [MQ ST]:MP3 MQ Stereo Recording Mode [LQ ST]:MP3 LQ Stereo Recording Mode [HQ MO]:MP3 HQ Mono Recording Mode [MQ MO]:MP3 MQ Mono Recording Mode [LQ MO]:MP3 LQ Mono Recording Mode Set up AGC “ON”...
  • Page 48 Set up microphone power supply “ON” or “OFF” MIC Power [OFF]:Turn off microphone power supply [ON]:Turn on microphone power supply Hint: . Recording settings can only be made before recording in the STOP mode, changes are not possible during record. .
  • Page 49 Playback Setting Repeat Set up the repeat mode. [Sequency]:Playback the files in order, until the last one. Then playback stops. [Loop one]:Repeat the file. [Loop]:Repeat all the files in folder. Playback Speed Set up the playback speed. [0.5 x] [0.6 x] [0.7 x] [0.8 x] [1.0 x] [1.2 x] [1.4 x] [1.6 x] [1.8 x] [2.0 x] Set up EQ mode.
  • Page 50 System Setting DATE & TIME During the recording process, screen displays DATE & TIME. This sets the master system clock. Set recording light “ON” or “OFF”. Recording Light [OFF]: During recording, record LED is OFF [ON]: During recording, record LED flashes. Beep Beep is the sound when you press any button.
  • Page 51 . When recorder is in RECORD, PLAYBACK AND PAUSE modes, automatic shutdown is inhibited. Battery Type Please set according to the current batteries being used so that the LS50 can display the correct remaining power accurately. [DRY BATTERY]:Choose this option when using 2 regular alkaline “AA” dry batteries.
  • Page 52 Disk Information Check total capacity, available capacity and used capacity of the internal memory. [CAPACITY] [AVAILABLE] [USED] Version Check software version, hardware version and loader program version. [SOFTWARE] [HARDWARE] [LOADER] Format Disk Formatting disk can delete all files in recorder rapidly. Notes: .
  • Page 53 [BACKLIGHT SETTING]:30 seconds [AUTO POWER-OFF]:Never shut down [BATTERY TYPE]:Dry battery [RECOR Folder D]:A [LEVEL]:15 [VOL]:-28 Note: . System settings can only be accessed in STOP mode. . Long press of the <FILE/MENU> button in STOP mode to enter settings menu. Settings menu includes [Recording setting] [Playback Setting] and [System Setting] .
  • Page 54 This chapter covers how to use transfer data in detail and using the LS50 as mobile mass memory. - 54 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 55: System And Hardware Requirement

    1 SYSTEM AND HARDWARE REQUIREMENT SYSTEM REQUIREMENT Please connect LS50 to the computer installed with the following systems. Windows operation system Windows XP / Windows Vista / Windows 7 Macintosh OS system It may be necessary to install a special driver program if using Windows 98 or Windows 2000 operating system.

  • Page 56: Folder Structure

    [Folder B] [Folder C] [Folder D] [Folder E] [Folder MUSIC]. These 6 folders are displayed as [A] [B] [C] [D] [E] [M] . The LS50 can identify audio files stored in these 6 folders and the root directory. . Non audio files stored in [A] [B] [C] [D] [E] [M] and sub-folders cannot be recognized.

  • Page 57: File Transfer

    You can copy recorded files from the LS50 to a computer for back-up storage. 1. Turn on the LS50. 2. Plug one end of the USB cable to the USB connector of the LS50 and the other end to the USB connector of the computer.
  • Page 58 “.MAK” file corresponding to this audio will be generated. . “.MAK” files can only be recognized by the LS50 and will be used when playing back the corresponding audio file. COPY MUSIC FROM A COMPUTER TO THE LS50...
  • Page 59 The LS50 can communicate with your computer so that you can copy files from computer to the LS50. Hint: . Please refer to “copy music in computer to LS50 and playback” while the recorder is communicating with computer. - 59 -...
  • Page 60 This chapter introduces common system prompts, solutions of error messages and how to solve FAQ. - 60 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 61: System Tips

    1 SYSTEM TIPS While using the LS50, some information tips or error messages may appear. Primary causes and solutions are listed below. Hint: . You can try the following instructions to troubleshoot the problem yourself. Please contact to our customer support for additional information.
  • Page 62 "Too many files in current . The LS50 can read the first 1000 files in any folder. ——Delete some files folder " "Failed to open file" . File is damaged . File format is unsupported "Low free space" . Internal memory is full ——Delete some files...
  • Page 63 " Can't set speed with WMA" . WMA files cannot use speed playback feature " Can't set EQ with WMA" . WMA files cannot use EQ selection - 63 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 64: Faq

    2 FAQ You can try the following instructions to troubleshoot problems. Please contact to our after-sales service department if the problems continue. FAULT PHENOMENON CAUSES AND SOLUTION Cannot Boot . Wrong battery polarity ——Correct polarity . Low battery ——Install new batteries .
  • Page 65 Recorder Stop Functioning . This may be caused by battery contact fault or low battery reserve. The Normally LS50 may crash ——Take out batteries and replace them with 2 new batteries and retry . Disk or system error ——Recover system setting and format disk Screen Time Display as .
  • Page 66 - 66 - Beijing InfoMedia Electronic Technology Co., Ltd...

  • Page 67: Specifications

    1 SPECIFICATIONS GENERAL Storage capacity Compression type PCM ,MP3 Sampling rate 48KHz Playback format WAV ,MP2 ,MP3 ,WMA Frequency response 20Hz ~22KHz,+-0.5dB 94dB (bandwidth 20Hz~22KHz,ASA “A” weighted) SNR(Playback) 90dB (Mic input +19dB Pre-amp + A/D, 20Hz to 22KHz,ASA “A” SNR (MIC channel) weighted) Dynamic range(Line in) >90dB...
  • Page 68 INPUTS & OUTPUTS MIC filter 20Hz~22KHz / 100Hz~22KHz MIC Max. Gain 40dB MIC Min. Gain 30mW (left) + 30mW (right) (16Ω) Headphone Max. outputs Built-in MIC Built-in stereo microphone MIC IN 3.5 mm stereo jack connector LINE IN 3.5 mm unbalanced stereo jack connector Stereo headphone output 3.5 mm stereo jack connector POWER SUPPLY...

  • Page 69: Safety Statement

    . Do not invert battery polarity. . Do not mix new batteries with the semi-used batteries . If batteries appear hot, please stop using the LS50 immediately. . Do not attempt to charge the alkaline batteries . Please keep batteries out of the reach of the children.
  • Page 70 InfoMedia Electronic Technology Co., Ltd Floor 4, B Building, Printing Academy No. 2 Cuiwei Road, Haidian District Beijing, China.P.R Tel : 400 653 8168 www.lotoo.cn service@lotoo.cn...

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