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Qudelix 5K, User Manual

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Qudelix 5K User Manual Download Page 20

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5K offers 2-way associative volume control for optimal sound quality. It always keeps and guarantees the 

full-scaled audio stream over Bluetooth or USB. In either way, you can control the loudness level via 
smartphone source volume or 5K device volume without any loss.

Volume

Source 

Volume

5K Device 

Volume

Summary of Contents for 5K

Page 1: ...Copyright 2021 by Qudelix Inc All rights reserved JULY 2021 Qudelix 5K User Guide...

Page 2: ...KHz 24 bit USB Audio Class 1 0 Windows MacOS Linux No Device Driver Android Device through C to C or OTG cable 10 band Double Precision GEQ PEQ High Sensitivity 3 D LDS Laser Direct Structuring Antenn...

Page 3: ...tion Output Power 3 5mm 80mW per channel 2 5mm 240mW per channel SNR A weighted 3 5mm 118dB 2 5mm 122dB THD N 3 5mm 0 004 2 5mm 0 002 Separation 3 5mm 79dB 2 5mm 117dB 1KHz 32 ohm Output Impedance Les...

Page 4: ...ith BLUE LED Pairing Mode long press 3 sec Play Pause Single Click Next Track Double Click Answer Incoming Call Single Click Power On Off long press 3 sec Previous Tack Double Click BL Blue Lower BU B...

Page 5: ...Buttons with RED LED RL Red Lower RU Red Upper Volume Down 0 5dB Volume Up 0 5dB...

Page 6: ...Audio Output Microphone 2 5mm Balanced Audio Output Max 4V RMS 240mWatt Ch 3 5mm Unbalanced Audio Output Max 2V RMS 80mWatt Ch Built In Microphone...

Page 7: ...Pairing Mode Press BU Blue Upper button for more than 3 sec Red Blue LED blink when pairing mode 3 Go to your Android Bluetooth menu Scan Bluetooth devices Select Qudelix 5K in the Available devices...

Page 8: ...SONY LDAC a high quality audio codec After pairing the device with an Android smartphone please enable LDAC in the Android Bluetooth menu Go to Paired devices list Select option button for Qudelix 5K...

Page 9: ...ng over Bluetooth without Qudelix App However we strongly recommend installing and using the app to experience the feature rich nature of Qudelix 5K fully 5K allows the APP connection with one device...

Page 10: ...3 sec Red Blue LED blink when pairing mode 3 Go to your iOS Bluetooth menu Scan Bluetooth devices Select Qudelix 5K in the Available devices list 4 Paired Once paired successfully you will see Qudelix...

Page 11: ...Bluetooth without Qudelix App However we strongly recommend installing and using the app to experience the feature rich nature of Qudelix 5K fully 5K allows the APP connection with one device at a tim...

Page 12: ...eous battery level The battery voltage is just for reference Use a standard 5V charger or PC USB only Do NOT use a high speed charger The 5K built in charger will limit the maximum charging current to...

Page 13: ...kill not only the battery life but also cause the battery in serious FIRE HAZARD Please use 5V 1 2A standard charger or PC USB port only for charging 5K Do NOT use a high speed charger It would cause...

Page 14: ...tery time varies across the codec sample rate power profile and the output mode The sensitivity of the connected earphones headphones and the output volume level also can make the battery time longer...

Page 15: ...ded for the most IEMs Longer battery time and the lower noise floor High 2V RMS mode 6dB higher maximum output level Recommended for headphones Auto Volume Correction The firmware adjusts the volume a...

Page 16: ...Suitable for mobile and outdoor use cases Performance Profile SPORT mode Highest DAC Operating Clock High Output Bias Current Best Performance Best Sound Quality with lesser battery time USB powering...

Page 17: ...ource Device 2 ch DAC AMP for Stereo Audio 1 pin Ground Common Ground Ground Pin goes to both Speaker L and Speaker R Ground ripple noise affects both L R channel Both AMP_NOISE and GROUND_NOISE affec...

Page 18: ...ise Common Mode Noise Reduction Common AMP_NOISE is canceled out easily VL LP AMP_NOISE LN AMP_NOISE LP LN 2L VR RP AMP_NOISE RN AMP_NOISE RP RN 2R Relatively better Sound Quality Better Linearity Bet...

Page 19: ...9218P DAC HPAMP with PGA Programmable Gain Amplifier Analog Volume Control Integrated PGA Programmable Gain Amp 0dB 24dB Range 1dB Step Provides the best sound quality at any volume level Noise level...

Page 20: ...mal sound quality It always keeps and guarantees the full scaled audio stream over Bluetooth or USB In either way you can control the loudness level via smartphone source volume or 5K device volume wi...

Page 21: ...rtphone PC Laptop volume control Remotely adjusts 5K built in Volume Controller 2dB step Coarse Control 5K Device Volume Control 0 5dB step Fine Control Optimal sound quality at any given volume level...

Page 22: ...ume Input RMS The input RMS displays the audio signal level that 5K receives from the source device With 2 way absolute volume the input RMS should stay at the same level across all source volume leve...

Page 23: ...the smartphone display or using 5GHz WiFi might help the LDAC streamed a little better The LDAC 660kbps is the best trade off for reliable streaming and sound quality In most cases you would get good...

Page 24: ...MPS LED Battery Built In Charger Power Switch System QCC512X ES9218P SMPS LED Battery Powered USB Powered Charging USB Powered Charging Completed When powered with USB the device gets the source power...

Page 25: ...ously Bluetooth DAC connected to Smartphone USB DAC connected to PC Laptop Audio Streaming is exclusive to one source device at a time Bluetooth and USB are automatically switched depending on whether...

Page 26: ...Source Input Selection Press the Bluetooth or USB icon in the center of the volume screen to set...

Page 27: ...t the mix up ratio with AMBIENT LEVEL slider If ABSOLUTE VOLUME is ON The smartphone side key volume adjusts the overall 5K device volume The smartphone side key volume adjusts both microphone and mus...

Page 28: ...emory 5K reloads the settings at boot up and continues the same condition as configured before Touching the EQ Graph plot window will display the preset menu Long press to a preset would save the curr...

Page 29: ...10 band PEQ or GEQ supported PEQ Filter Type PEAK LPF HPF LSHELF HSHELF BL Blue Lower PEQ GEQ GEQ PEQ...

Page 30: ...20 Custom User Presets All Presets are saved in the 5K s internal flash memory BL Blue Lower EQ Preset Long Press to save the current EQ profile...

Page 31: ...d is placed around the red LED button 5K provides the best RF performance in most use cases However for the optimal performance please keep this area away from any metallic objects Bluetooth 2 4 GHz C...

Page 32: ...ess and serial number No need to keep the proof of the purchase No receipt nor invoice requires for the warranty service Any issue caused by accident or misuse Can be replaced with a refurbished produ...

Page 33: ...ooth link UPDATE FIRMWARE vX X X will appear when a new FW is available Please keep the 5K close to the smartphone during the FW update Until 5K receives and validates the perfect FW binary it won t u...

Page 34: ...nzip the DFU package to the local folder completely ZIP Previewer won t work Set USB DAC FS as 96KHz before running the DFU Connect the 5K to Windows PC Execute run_dfu bat Wait until completed upgrad...

Page 35: ...C5124 and two ES9128p To enhance the PCB reliability and durability we did the epoxy underfills on those sensitive BGA parts although having additional cost increase Those parts are bonded twice with...

Page 36: ...Size 52 8 H x 26 7 W x 15 6 D mm including Clip Weight 25g Appendix Size Weight...

Page 37: ...PACKAGE 91mm L x 55mm W x 55mm H INCLUDED USB C to C Cable 120mm USB C to A Cable 120mm No User Manual included in the package Please refer this user guide Appendix Package...

Page 38: ...d the Android selects the active output device exclusively With some specific Android devices SONY Android App sometimes overrides the system Audio Output selection to Bluetooth forcibly If you don t...

Page 39: ...tput you can select the active device you want to use The system menu for Audio Output may be different across smartphone manufacture Appendix Android Audio Output Device 5K Bluetooth 5K USB DAC Andro...

Page 40: ...hone both through Bluetooth and USB DAC Apple Camera Kit at the same time In that case the iPhone detects multiple audio output devices And the iOS selects the active output device exclusively Appendi...

Page 41: ...eiver plays the incoming call ringtone Android OS selects System Bluetooth Option Top Right Advanced Ringtone sync Appendix Android In Band Ringtone Bluetooth Option Android In Band Ringtone Galaxy S1...

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