Aguilar DB 751 Manual Download Page 4

 

 

FX Send: 

  
Sends the signal to your effects units. Connect the input of your effects unit to this jack 
  

 
FX Return: 

  
Returns the signal from your effects units to the amplifier. 
Connect the output of your effects unit to this jack. 
 

Effects Loop: 
  

The “Send” knob is push/pull for selecting line or instrument level. This allows you to 
use a studio effects unit (line level) or a stomp box (requires instrument level) in the FX 
loop. Adjust the amount of “Send” so as to get maximum performance from your effects 
unit and the “Return” to get the right amount of effected signal.   

  

The “Return” knob is push/pull for parallel or series operation. In parallel mode, the 
effected signal is mixed to the dry sound. In series mode, the effects in the loop will 
process the entire signal. The amount of effects can be adjusted with the return knob. If 
you pull the return knob out for series operation without any effects plugged in the loop, 
the loop will be open and no sound will result. 
 
  

XLR Balanced Output: 
  

Use the Pre-EQ setting in a concert situation where the sound engineer is taking a signal 
into the house-mixing console. The engineer is now getting their feed before the preamp 
stage, which allows them to use appropriate EQ for the venue. The EQ on stage will still 
be controlled by your settings. If the engineer wants your EQ settings included in the 
mix, set the control to Post EQ and your settings on stage will be sent to the house.  
 
The D.I. output is  –32dB.  This level is the correct output for a signal going into the 
preamp on a mixer. Our balanced output uses the highest quality Jensen output 
transformer. If you hear any ground noise, change the position of the ground lift switch 
under the output 
 

Footswitch:  
  

Use the optional Aguilar footswitch to mute the signal for silent tuning. 
 

 
 
 
 

Summary of Contents for DB 751

Page 1: ...e preamp While maintaining the legendary sound of the DB 750 the DB 751 features improvements in the EQ section a better control layout detachable rack ears and thermally controlled fans This amp has the headroom to bring your tone to life no matter what kind of music you are playing For sound clips and sample settings be sure to visit our website at www aguilaramp com Aguilar Amplification LLC Ne...

Page 2: ...5 dB of broadband boost at 5 7 kHz Effects Loop Send is push pull for line or instrument level Return is push pull for parallel or series operation Inputs One 1 4 input jack with an active passive switch Outputs Two Neutrik Speakon speaker outputs Jensen XLR balanced output 32dB with a pre post EQ switch and a ground lift switch Tuner out Cooling High quality whisper fans with thermal speed contro...

Page 3: ...tput Gain Knob Controls the gain of the preamp section Bright Switch Adds 5dB of broadband boost at 5 7 kHz Treble Knob 12 7 dB 4 kHz Midrange Knob 12 12 750Hz Bass Knob 12 12 40 Hz Deep Switch Adds 5dB of broadband boost at 30 Hz Master Knob Controls volume Clip Light Flashes if the preamp is clipping Turn down either the Gain the EQ or Master volume ...

Page 4: ... be adjusted with the return knob If you pull the return knob out for series operation without any effects plugged in the loop the loop will be open and no sound will result XLR Balanced Output Use the Pre EQ setting in a concert situation where the sound engineer is taking a signal into the house mixing console The engineer is now getting their feed before the preamp stage which allows them to us...

Page 5: ... tube heaters to warm up before full current is drawn by the valves 2 DC offset at the amp s output is monitored Only if none is present normal condition will the unit proceed with the self check protocol 3 Temperature on the MOSFET heat sink is checked and again only if normal temperature is detected will the status check continue 4 If all the voltages offsets and temperature are in accordance wi...

Page 6: ...ll be asked to send a copy with your amplifier Before sending your unit to Aguilar for repair you must receive a return authorization number from us Contact us via phone fax or email techsupport aguilaramp com with a description of the problem We will then issue to you a return authorization number You are responsible for all shipping charges You must ship the unit to us freight prepaid We will re...

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