American Audio Stereo Amplifier 4295 User Manual

Q-D5  
Professional Preamp Mixer  
American Audio  
4295 Charter Street  
Los Angeles Ca. 90058  
Revised 4/05  
 
Q-D5™  
Safety Precautions  
• For adult use only - Keep out of the reach of children.  
• Be sure that the local power outlet match that of the required voltage of the unit.  
• Disconnect from main power before making any type of connection.  
• Do not attempt any service. There are no user serviceable parts inside.  
• Never plug this mixer in to a dimmer pack  
• Always be sure to mount this mixer in an area that will allow proper ventilation.  
• Do not attempt to operate this mixer, if it becomes damaged in any way.  
• Never operate this mixer when it’s covers are removed  
To reduce the risk of electrical shock or fire, do not expose this mixer rain or moisture  
• This mixer is intended for indoor use only, use of this product outdoors voids all warranties.  
• During long periods of non-use, disconnect the mixer’s main power.  
• Always mount this mixer in safe and stable matter.  
• Power Cord Protection - Power supply cords should be routed so that they are not likely to be  
walked on or pinched by items placed upon or against them, paying particular attention to cords  
at plugs, convenience receptacles, and the point where they exit from the mixer.  
• Cleaning -The mixer should be cleaned only as recommended by the manufacturer.  
• Heat -The mixer should be situated away from heat sources such as radiators, heat registers,  
stoves, or other mixers (including amplifiers) that produce heat.  
• Be sure to save the packing carton in case you may ever have to return the mixer for service.  
• Read all documentation before attempting to operate your new mixer. Please save all your docu-  
mentation for future reference.  
• Do not spill water or other liquids in to or on to your mixer.  
• Do not attempt to operate this mixer if the power cord has been frayed or broken. Please route  
your power cord out of the way of foot traffic .  
• Always have the front gain controls set to their lowest level during initial power-up to prevent  
speaker damage.  
• The mixer should be serviced by qualified service personnel when:  
A. Objects have fallen, or liquid has been spilled into the mixer.  
B. The mixer has been exposed to rain or water.  
C. The mixer does not appear to operate normally or exhibits a marked change in  
performance.  
Q-D5™  
Main Features  
• Optical Fader for Q-Start Control  
• Adjustable Crossfader Curve - for crabbing  
• Selectable Voltage 115v~230v  
• 2 Phono/2 Aux, 2 Line Inputs  
• Fader “Q” Start  
• Soft-touch rubber knobs for better control  
• Extremely clean signal to noise ratio  
• Light Control Signal Output Jack  
Talk Over Button - Reduces channel output  
gain by 15dB +/- 2 dB  
• Q-Start Compatible (for use with compatible  
American Audio CD Players )  
• -30dB Rotary Kills for Treble, Bass and  
Mids on both channels  
• Dual Function Stereo LED Level Indicator -  
Indicated Master and PFL (Pre Fader Level)  
Signal Levels  
• Split Cue Monitoring  
• 100% Push Button Kills  
• Cue Mixing  
• High output to headphones  
• Replacable/Adjustable Transformer Switches  
• Adjustable Channel Fader Curve  
• Separate gain control for each channel  
• Hot Swap Crossfader  
• Separate Mic EQ Section  
©American Audio®  
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Q-D5™ Instruction Manual Page 3  
 
Q-D5™  
Quick start instructions  
American Audio would like to thank for your purchase of  
this great product. For those of you that are to impatient  
to read the entire user manual we have compiled these  
quick start instructions. We hope that you will at least read  
through these instructions to familiarize yourself with the  
basic understanding of the unit. The Q-D5 is part of Ameri-  
can Audio’s continuing evolution in audio technology. This  
unit has been built and designed with the typical DJ in  
mind, by DJ’s. We have attempted to provide you with the  
most reliable product on the market by using only compo-  
nents made from quality products.  
MASTER LEVEL - Use this level control to set your volume  
output. Try never to send an output of more than +4dB to  
your system. Signal at levels higher than this will start to  
distort and may cause damage to your system and speak-  
ers. Remember that a distorted signal from you mixer will  
only be multiplied throughout your system.  
DJ SKILZ  
SIGNATURE SERIES  
CHANNEL GAIN LEVEL - The channel trim levels are not  
to be used as volume controls, never use the channel gain  
to set the output volume. These controls are used to aid in distortion control. Use these control to  
preset your signal level before the crossfader. With your channel faders in the maximum position, use  
the channel trim level to set an average output level of about +4dB on you master level meter.  
HEADPHONES - To avoid sever hearing damage, always be sure the headphone level is set to mini-  
mum before plugging them in. Never put the headphone on without making sure the headphone level  
is turned down.  
MIC - The mic connector uses a 1/4” jack unbalanced connector. The DJ mic has an independent  
volume control. When feedback occurs when using the mic, try lowering the “low” level this may  
reduce the feedback. Always leave the mic level to it’s minimum level when not in use.  
PHONO/AUX SWITCH (27) - This switch is used to change the selected input from phono level to  
line level and vice versa. Channels 1 and 2 may be switched PHONO/AUX or LINE. The selectors for  
AUX1/PHONO1 and AUX2/PHONO2 are on the rear panel.  
Q-START FEATURE - This function works in conjunction with a compatible American Audio or Ameri-  
can DJ “Q”Start CD player. When used with a compatible CD player, you can use the crossfader to  
start and stop the CD Player with the slide of the fader. The ON/OFF “Q ”START switch activates this  
FADER “Q ”START feature.  
CROSSFADER CURVE ADJUSTMENT- This rotary knob is used to change the way the crossfader  
will operate. The crossfader can operate in three different modes, NORMAL CURVE, QUICK CURVE  
and any variation of the two. (Quick Curve usually used for crabbing).  
CHANNEL FADER CURVE ADJUSTMENT - This rotary knob is used to change the way the channel  
fader will operate. Each channel has a Curve adjustment. The curve on the faders adjust from long or  
short or any variation of the two.  
REVERSE FUNCTION - Both the crossfader and the channel faders will reverse function when the  
reverse switch is activated.  
©American Audio®  
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Q-D5™ Instruction Manual Page 4  
 
Q-D5™  
Controls and Features  
Top Panel  
7
8
9
10  
11  
12  
13  
14  
6b  
6a  
5
4
3
2
15  
DJ SKILZ  
SIGNATURE SERIES  
1
16  
1. OPTICAL CROSSFADER - This fader is used to blend the output signals of channels one and two  
together. When the fader is in the full left position (channel 1), the output signal of channel one will be  
controlled by the master volume level. The same fundamentals will apply for channel two. Sliding the  
fader from one position to another will vary the output signals of channels one and two respectively.  
When the crossfader is set in the center position, the output signals of both the channels one and  
channels two will be even.  
2. CHANNEL FADER - These faders are used to control the output signal of any source assigned to  
its particular channel.  
3. CHANNEL TRANSFORMER SWITCH (REPLACEABLE AND ADJUSTABLE) - These switches  
are used to select the input source assigned to each channel. Each channel may only be assigned one  
input source at a time. The TRANSFORMER SWITCH may be used in an up/down or left/right pattern.  
To adjust the transformer orientation please follow the instructions on page 13.  
4. PFL BUTTONS - These buttons are used to activate a channels “CUE” mode. A red LED next  
to the PFL button will glow when a channels cue mode is activated. Cue mode will send a channels  
©American Audio®  
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Q-D5™ Instruction Manual Page 5  
 
Q-D5™  
Controls and Features Cont.  
incoming signal to the headphones. The cue level is adjusted by the CUE LEVEL ADJUSTMENT KNOB  
(13). Be sure the cue level is set to minimum before putting a pair of headphones on. Be sure the CUE  
MIXING KNOB (12) is turned to the “CUE” position to hear the selected channel source.  
5. TALKOVER BUTTON - When engaged this function will decrease all signal levels, except the  
microphone level, by 15dB. A red LED next to the Talkover Button will glow when the talkover function  
is engaged. In the OFF position all signals will remain at their normal levels.  
6a. MICROPHONE VOLUME - This knob is used to regulate the microphone output volume. Turning  
the knob in a clockwise direction will increase the volume level.  
6b. MICROPHONE EQ SECTION - These controls are used to adjust the microphone treble level,  
midrange, and bass levels. Each microphone input has a separate channel EQ.  
MICROPHONE TREBLE CONTROL - This knob is used to adjust the treble levels of the  
Microphone with a maximum signal gain of 15dB or maximum signal decrease of -30dB.  
Turning the knob in a counter-clockwise direction will decrease the amount of treble  
applied to the microphone signal, turning the knob in a clockwise direction will increase  
the amount of treble applied to microphone signal.  
MICROPHONE BASS CONTROL - This knob is used to adjust the low frequency levels of  
the microphone with a maximum signal gain of 15dB or maximum signal decrease of -30dB.  
Turning the knob in a counter-clockwise direction will decrease the amount of bass applied to  
the microphone signal, turning the knob in a clockwise direction will increase the amount  
of bass applied to microphone signal.  
7. CHANNEL CUT BUTTONS - These buttons are used to cut out the Treble, Mid or Bass frequencies  
of the incoming audio signal. When these buttons are depressed the selected frequency level is cut by  
100%. When a Cut Button is engaged a red LED located directly above the specific button will begin  
to glow, indicating the cut function has been activated. Depressing the Cut Button will disengage the  
cut function.  
8. LEVEL INDICATORS - The dual LED’s indicators are used to indicate either the master output level  
or the PFL level’s of channels one and two. The level indicators will directly reflect the operating mode  
of the dB SELECTOR SWITCH (15).  
9. CHANNEL GAIN CONTROL - This adjustment is used to adjust an audio source signal input gain  
for a channel. Never use the gain control to adjust output volume. Setting the gain level properly will  
ensure a clean output signal. To properly set the gain level controls:  
1. Be sure the MASTER VOLUME CONTROL (11) is set to minimum (zero output).  
2. Set the CHANNEL FADER (2) to level 7.  
3. Begin play on an audio source connected to the channel you are adjusting.  
4. Be sure the LED LEVEL INDICATOR FUNCTION SWITCH (15) is set to the PFL CH1/CH2  
position.  
5. Turn the PFL (4) function on, for the channel you are adjusting.  
6. Use the GAIN CONTROL (9) to achieve an average output level of +4 dB.  
10. MAIN POWER SWITCH - This is the main power ON/OFF button. The power switch will glow blue  
when power is ON. Before main power is applied, be sure you have made all connections to the mixer.  
Also be sure your amplifier(s) is(are) tuned off. Remember to avoid damaging pops, the mixer should  
be powered on first and turned off last.  
11. MASTER VOLUME CONTROL - This rotary knob is used to control the master output level (volume).  
To avoid distorted output try to maintain an average output signal level +4 dB. Be sure this volume  
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Q-D5™ Instruction Manual Page 6  
 
Q-D5™  
Controls and Features Cont.  
control is always set to zero before turning the unit on.  
12. CUE MIXING CONTROLLER - This knob selects the channel for monitoring. The monitor signal  
comes from the Prefader. This means it will not be affected by the channel faders. You can monitor  
each channel individually. Connect your headphones to the HEADPHONES JACK (34) . Turn the CUE  
MIXING CONTROL to CUE and select the desired channels with the PFL switches. When you turn the  
CUE MIXING CONTROL to PGM (PFL switches without function), you can cue the output signal of the  
mixer. If the CUE MIXING CONTROL is set to the center position, you can cue both the channel signal  
you selected and the output signal.With the CUE LEVEL control, you can adjust the phones volume  
without changing the output signal.  
13. CUE LEVEL VOLUME CONTROL - This knob is used to adjusts the headphone volume output  
level. Turn the knob in a clockwise direction to increase the headphone volume.  
14. CHANNEL EQUALIZER (“ROTARY KILLS” - BASS/MID/TREBLE CONTROL) - All of the chan-  
nels include a three-band signal EQ. These controls are used to increase or decrease the LOW’s,  
MID’s, and HI’s of the output signal.  
CHANNEL TREBLE CONTROL - This knob is used to adjust the treble levels of a channel  
allowing for a maximum treble gain of 15dB or maximum decrease of -30dB. Turning the knob  
in a counter-clockwise direction will decrease the amount of treble applied to a channel signal,  
turning the knob in a clockwise direction will increase the amount of treble applied  
to a channel signal.  
CHANNEL MIDRANGE CONTROL - This knob is used to adjust the midrange levels of a channel  
allowing for a maximum midrange gain of 15dB or maximum decrease of -30dB.  
Turning the knob in a counter-clockwise direction will decrease the amount of midrange  
applied to a channel signal, turning the knob in a clockwise direction will increase the amount  
of midrange applied to a channel signal.  
CHANNEL BASS CONTROL - This knob is used to adjust the low frequency levels of a  
channel allowing for a maximum bass gain of 15dB or maximum signal decrease of -30dB.  
Turning the knob in a counter-clockwise direction will decrease the amount of bass applied to  
a channel signal, turning the knob in a clockwise direction will increase the amount of bass  
applied to a channel signal.  
15. dB METER MODE SELECTOR - This push button switch is used to change the operating mode  
of the dB LED meter. When the switch is in the Master L/R (up) position, the dB meter will indicate the  
master output levels. When the switch is in the PFL CH1/CH2 (down) position the dB meter will use  
the left side of the meter to indicate channel one’s prefader level and use the right side of the meter to  
indicate channel two’s prefader level.  
16. Q-START ON/OFF SWITCH - This function works in conjunction with a compatible American  
Audio® or American DJ® “Q” Start CD player. When used with a compatible CD player, you can use the  
crossfader to start and stop the CD play. The ON/OFF “Q” START switch activates the fader “Q” start  
feature. When the fader “Q” start feature is activated sliding the CROSSFADER (1) from left to right will  
play or cue any CD player connected to the CONTROLLER JACKS (19) on the rear of the unit.  
For example, connect a compatible dual CD player connect to mixer channels one and two  
(refer to your CD player manual for proper set-up). Be sure the Fader “Q” Start feature is  
activated on both channels. Slide the crossfader to the channel one position (full left) and  
begin playback on CD drive one. Slide the crossfader to the channel position (far right). This  
will immediately trigger the play function on CD drive two and return CD drive one to cue  
mode. To return to normal fader operation turn the Fader “Q” Start ON/OFF SWITCH to the  
©American Audio®  
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Q-D5™ Instruction Manual Page 7