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1. qtx MODEL NUMBER PH SERIES PA HEADS Item ref 178 734UK 178 736UK User Manual SE FESSER AS PH8200 USB SD PLAYER 0 CHANNEL 2 an n group brand www avsl qtx com qtx A Caution Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty Introduction Thank you for choosing a QTX PH series PA Head as part of your sound reinforcement system This mixer amplifier is designed to offer high quality dependable service for mobile and installed systems Please read this manual fully and follow the instructions to achieve the best results with your new purchase and to avoid damage through misuse Warning To prevent the risk of fire or electric shock do not expose any components to rain or moisture If liquids are spilled on the casing stop using immediately allow unit to dry out and have checked by qualified personnel before further use Avoid impact extreme pressure or heavy vibration to the case No user serviceable parts inside Do not open the case refer all servicing to qualified service personnel Safety e Check for correct mains voltage and condition of IEC lead before connecting to power outlet e Speaker leads should be of good quality and have cores which are capable of the power output e Do not allow any foreign objects to enter the case or through the ventilation grilles Placement e Keep out of direct sunlight and away from heat sources2. e Keep away from damp or dusty environments e Ensure adequate air flow and do not cover cooling vents at the front and rear of the amplifier e Ensure adequate access to controls and connections Cleaning e Use a soft cloth with a neutral detergent to clean the casing as required e Use a vacuum cleaner to clear ventilation grilles of any dust or debris build ups e Do not use strong solvents for cleaning the unit 178 734UK 178 736UK User Manual qtx Input Channel Microphone input balanced XLR Line input unbalanced jack or 2 x RCA Low frequency EQ control High frequency EQ control Delay effect level Channel output level DORE A a 7 Delay effect master level control 8 Delay effect time control 9 Delay effect repeat control 10 AUX input connectors 2 x RCA 11 Master level output control 12 AUX input level control 13 USB SD player level control 14 REC output connectors 2 x RCA 15 Power and level meter LEDs 16 Graphic EQ frequency sliders Note AUX IN and REC OUT connections 10 14 are on the rear panel of PH4150 Rear Panel Me ESA 110Vac DO NOT OBSTRUG F COOLING VENTS 17 18 19 20 21 17 Mains voltage selector 20 Speaker outputs wired parallel 18 Mains power on off switch 21 Cooling fan vent 19 IEC mains inlet and fuse holder 178 734UK 178 736UK User Manual qtx Setting Up Connect speakers via the 2 outputs on the rear panel 20 using go
3. CLASSICAL BASS LIVE To mute the output whilst allowing the current track to continue to play press the Mute button 32 Pressing this button again switches off the mute 178 734UK 178 736UK User Manual qtx Display and Clock Track name and elapsed time information is shown on the backlit LCD display 28 The icons at the top of the display also show the repeat modes and media source selected This display can be swapped for a 24hr clock display by pressing the Clock button 30 Setting the clock Pressing and holding the clock button makes the hour value flash on the display and the hour value can be changed using the Previous Next track buttons Pressing the Clock button again allows the minute value to be changed in the same way Pressing the Clock button again sets the clock running at the selected time IR Remote Control The USB SD player is also supplied with an Infra Red remote control handset Remove the clear plastic tab from the handset to engage the CR2025 button cell before first use 37 34 C2 E 38 34 Player Power on off button SS 35 Play Pause button 35 Ms 39 36 EQ select 36 a 40 37 USB SD Off Mode select 41 CLocx 42 38 Mute on off 39 Previous Next track select 40 Volume up down buttons 41 Repeat Mode select 42 Clock Track display select 43 Numerical track select O O O O OG 610 08 Most of the front panel functions of the audio player are duplicated with a few except
4. as Low Lo mid Mid Hi mid and High EQ Halfway up the slider is neutral top position is 12dB boost and bottom is 12dB cut of that frequency The PH series PA heads have a built in Delay section for producing echo effects for vocals or line level inputs Each channel has a rotary control for Delay level 5 which varies the amount of the input fed to the Delay Section Turn the master Delay control 7 up part way and then gradually increase the channel Delay level 5 to hear the effect The Delay effect can be adjusted to have longer or shorter delay time intervals by adjusting the Time control 8 and the number of repeats for the echo effect can be adjusted via the Repeat control 9 The AUX IN control 12 adjusts the volume level of the AUX IN inputs 10 The AUX IN inputs rear panel for PH4150 are suitable for any line level source these 2 x RCA inputs are summed to mono as the amplifier is single channel The REC outputs 14 are 2 x RCA connectors which carry the main mix output suitable for recording or linking onto another amplifier The USB SD control 13 varies the level of the USB SD player to the main mix When not in use remove USB or SD media turn down the Master volume control and switch off Disconnect from the mains if not in use for long periods 178 734UK 178 736UK User Manual qtx USB SD player The PH series PA heads each have a built in audio player which can playback compressed digital audio files sto
5. ful life a The goods must be disposed of according to your local council guidelines Errors and omissions excepted Copyright 2014 AVSL Group Ltd 178 734UK 178 736UK User Manual
6. ions The handset has a numerical keypad 43 allowing for direct track selection punch in the track number and the track will begin to play after a short pause Volume up and down buttons are independent of the Previous Next track select buttons on the handset The handset also has a Power on off button to switch the player on or off 178 734UK 178 736UK User Manual qtx Specifications Model Paaso PO Power Suppl Channel input Output power RMS 40 Output power RMS 89 Channel controls Master controls Digital audio player Speaker outputs RCA connectors AUX input REC output Dimensions Weight Troubleshooting No power LED on control pane Power LED is on but no other LEDS and no output Power and level meter LEDS are No playback from USB or SD medi POS Check AUX level control and reduce if necessary Check input audio source level is not too low Output is working but at very low level Ensure low impedance line or mic signal is not connected via jack Increase channel level control and EQ settings if turned down reciba with microphones Face microphone away from speakers and monitors j Reduce channel level control and or EQ level s Ensure Hi Z line level input s not connected via XLR Disposal The Crossed Wheelie Bin symbol on the product means that the product is classed as Electrical or Electronic equipment and should not be disposed with other household or commercial waste at the end of its use
7. level controls 13 12 Turn the Master volume control 11 down and set all Graphic EQ sliders 16 to the halfway position Switch the mains power on turn up the Master volume control 11 part way and gradually increase the Channel output level 6 for the microphone or line input source whilst checking the output through the connected speakers Alternatively a USB pen drive or SD card with compressed audio tracks stored can be connected to the USB SD Audio Player for checking playback through the speakers More details can be found in the USB SD player section of this manual Once the sound has been checked through the speakers increase the Master volume to the required level ensuring that the LED level meter 15 doesn t continually reach into the red 6dB The red 6dB level meter LED should only ever light briefly on the loudest peaks of the sound e g bass drum beat and if it lights for anything longer than momentarily the Channel or Master levels must be reduced until it stops lighting Adjust the channel output level controls to balance the mix of inputs and if required adjust the tone of any channel by boosting or cutting the Low and High controls 3 4 vertical position is neutral Furthermore tone adjustment for the overall mix is available via the master Graphic Equalizer This section is home to 5 sliders which range from 100Hz to 10kHz centre frequencies They can be otherwise considered from left to right
8. od quality speaker leads with 6 3mm jack connectors and twin core cable recommended no smaller than 2 x 0 5mm2 CSA When connecting speakers to the outputs ensure that the combined load is no lower than 4 Ohms 40 To make sure of this check the manufacturer s information If connecting more than one speaker observe the following calculation method 1 1 1 Impedance of speaker 1 Impedance of speaker 2 Total Impedance Most PA and sound reinforcement speakers are 8Q so we consider that 1 8 1 8 1 4 Therefore when connecting 2 x 8Q speakers to the PH series PA head the resulting total load is 442 The amplifier output is mono so each speaker will receive half of the rated output With the power switch 18 in the Off position connect the IEC inlet 19 to the mains using the power lead provided ensuring that the correct voltage is selected 29 Connect a microphone via the balanced XLR input 1 or a line input into the unbalanced jack or RCA connectors 2 for each channel to be used Wiring for balanced mic and unbalanced line inputs are shown below KER ping Jack plug RCA plugs gt sleeve GND TIP SLEEVE GND Sleeve Tip in 178 734UK 178 736UK User Manual gtx Operation To check an input ensure that Low and High EQ controls 3 4 are set to the vertical 12 o clock position and the Delay and Level controls 5 6 are turned fully down Also turn down the USB SD and AUX input
9. red on either USB memory device or SD card 22 USB port 23 Folder search buttons 24 USB SD Off Mode select 25 Repeat Mode select 27 26 Play Pause button 27 EQ select 28 LCD display 29 SD card slot 30 Clock Track display select 28 29 30 31 32 33 31 IR receiver 32 Mute on off 33 Previous Next or Volume 22 23 24 25 26 To begin using the USB SD audio player insert a USB pen drive and or SD card with compressed audio files stored on it into the USB connector SD card slot on the front panel 22 29 Provided that the tracks are stored as standard compressed audio files the media will start to play automatically Press Play Pause 26 to alternately pause or play the current track If the tracks are stored in separate folders the Folder search buttons 23 allow the user to step through folders to speed up track selection Within a folder or root directory pressing the Previous or Next track buttons 33 allow the user to step backward or forward through the tracks therein Pressing and holding these buttons adjusts the output volume up or down If both USB and SD media are connected the Mode button 24 allows the user to step through USB SD and Off sound source The Repeat button 25 toggles between single track repeat mode and all tracks repeat mode There are 6 EQ modes available which can be stepped through by pressing the EQ button 27 repeatedly to give different tone profiles NORMAL ROCK POP
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