background image

MASTER 4 BAND ACTIVE EQUALIZATION 

–The IVAC's main equalization is a true 4 frequency 

summed active band pass filter network. This unique filter set provides 4 non-resonant bands of con-
trol for smooth, musical adjustment of tonal content. The response is gentle and useable over the en-
tire range of the control position.  
 

REVERB MASTER 

- This knob controls the amount of reverb present in the output signal. The IVAC-

65 uses a premium Accutronics®  3 spring shielded reverb tank with impedance matched send and 
receive spring transducers. The sound is full, the tail decays smoothly and the clarity remains solid 
throughout the mix range. The reverb signal mixes with the effects return signal so that both effects 
may be used simultaneously. If the on-board reverb is not desired, just turn the reverb master down 
to zero.     
                                                      

MASTER VOLUME 

- This control adjusts the master volume of both channels. It also controls the 

level of the frequency compensated direct output for more consistent PA send results, otherwise, with 
radical changes of the channel gain stages, the direct out would vary without corresponding master 
volume controls. 
 

POWER SWITCH 

- Turns the AC mains power on and off, indicated by green LED above switch.  

 

FOOT SWITCH INPUT 

- This rear panel mounted 5 pin DIN connector is used with the accompany-

ing 4 button footswitch. Four LEDs indicate function selection. 

It should be noted that this is not a 

MIDI device and connection of a MIDI device to this connector will damage the MIDI device

.   

 

EFFECTS SEND/RECEIVE JACKS 

- The 1/4” send jack provides a nominal –10dB output signal 

(postmaster volume control) to drive any common effects processor. This jack can also be used as 
an unbalanced line output. The 1/4" return jack is used to return the processed signal back into the 
amplifier. This jack contains a switch that automatically opens the signal loop when processing is 
used. The “mix” control on the effects device is now used to set the balance between the 
“wet” (processed only) and the “dry” (unprocessed) signals.  
 

DIRECT OUTPUT 

- XLR, electronically balanced and frequency compensated, this output is used for 

sending a signal to a PA system (live application) or sending a signal to a recording console (studio 
application). A frequency compensated signal is commonly mixed with a mic’d signal to allow more 
sound options. Personal preference will dictate use. For live use, often the direct out will work better 
than a mic, especially when the amplifier is located next to a loud drum kit. Frequency compensation 
means that several equalizing filters are used to tailor the signal response to more closely resemble 
that of a speaker. A ground lift switch is provided to lift pin 1 on the XLR connector in the event of 
ground loop hum on the direct output. Signal level is nominally -30 dB. This output is short circuit and 
phantom power protected.  
 

HEADPHONE OUTPUT & SWITCH 

- Used to connect standard headphones (8 - 600 ohm). Switch 

shuts off signal to speaker jacks, allowing private practice or studio work with a minimum of fuss and 
bother, not to mention noise! This output is short circuit protected. Use common sense when playing 
through headphones to protect your hearing. Use caution when engaging the BOOST switch while 
wearing headphones.  
 

SPEAKER OUTPUTS 

- Two 1/4” speaker outputs are provided, one usually used for the on-board 

speaker (8 ohm combo version) and the other for an 8 or 16 ohm extension cabinet. Alternately, the 
on-board speaker may be disconnected (unplugged) and a single 4 ohm (or two 8 ohm) speaker 
cabinet may be used. This output is short circuit protected and rated to drive a minimum 4 ohms total 
load. 

CAUTION-THIS AMP IS LOUD!! PROTECT YOUR EARS!!

  

 

POWER INLET, VOLTAGE SELECTOR & FUSE 

- An IEC style power inlet connector is used to 

connect the AC mains power to the amplifier. Various cord sets are available, depending on the des-
tination country. An internal fuse (with spare) is provided in a small pull-out tray at the bottom of the 
connector. Match the value of this fuse to that specified in the fuse chart (on the back of the unit) for 
the selected input mains voltage. The Mains (line) voltage may be selected between a nominal 11 5 
volts and 230 volts AC ( I 0%).  
 

WARNING!!! THERE ARE NO USER SERVICEABLE PARTS INSIDE THIS UNIT. ALWAYS CON-
SULTA QUALIFIED SERVICEAGENTFOR SERVICE

.  

The use and operation of this device constitutes an agreement of full release of any and all liability connected 
with its use. In addition, by the use of this device, user agrees to hold both GENZ BENZ ENCLOSURES, INC 
and it's designers, sales agents and all other affiliates and related parties harmless in the event of any accident, 
injury, damage or loss resulting from such use.  

Reviews: