2
using a subwoofer. It automatically optimizes subsonic
cut-off and equalization of the lower portion of the
woofer’s frequency response.
Note: in either position, the Subwoofer Balanced Output of
the processor is always active.
Adjustable Crossover Control
The adjustable Crossover control accommodates
all of Yorkville’s subwoofers by providing a variable
upper cutoff frequency optimized for the drivers (refer
to corresponding curves for your Unity™ processor as
shown in the Graph Section). This allows control of the
crossover point between the subwoofer and woofer.
The Crossover control can be set according to a list
located on the side of the processor and in the back
pages of manual.
Notes on Hum and Noise
Reduction
Over the years, designers at Yorkville have been
developing circuits that greatly reduce our products’
susceptibility to hum and buzz. These circuits require
the use of the proper balanced shielded cables to
work. Balanced ¼ inch T.R.S. to T.R.S. (Tip/Ring/Sleeve)
cables are correct for use with Unity™ processors,
(XLR to XLR for 230V versions). The processors will reject
some noise even when you are using unbalanced
patch cables. To be sure of maximum noise rejection
always use balanced cables.
What if your amplifier, or mixer, does not have
balanced inputs or outputs? These processors have
an exclusive Yorkville feature called Remote Ground
Reference. This feature provides the noise rejection
approaching a balanced circuit (even when the unit
at the other end is unbalanced). In many cases, using
a balanced (T.R.S. ¼ inch) cable will work, if it doesn’t,
try the following… Assuming the mixer or power ampli-
fier has mono ¼ inch jacks, rig a custom balanced
patch cable by replacing the T.R.S. plug on one
end (not the Yorkville processor end) with a regular
mono1/4 inch phone plug. Connect the hot (from tip
of T.R.S. or pin 2 of XLR) to the tip of the mono plug.
Now twist the unused center lead (from ring of T.R.S.
or XLR pin 3) and the ground shield together (solder
them to the phone plug’s ground lug. Identify the
cable with tape on the plug that has been modified.
Wiring Tip / Ring / Sleeve Cables: Balanced cables should be wired Tip/Ring/Sleeve using cable with 2 conductors plus a shielded
ground to connect the sleeves of the ¼ inch connectors. Cables with an XLR connector on one end and ¼ inch connectors on the
other should be wired as shown below:
Tip – XLR pin 2 • Ring – XLR pin 3 • Sleeve (ground) – XLR pin 1
Internal Fuse
This unit should only be serviced by Qualified Service Personnel.
Risk of Electric Shock
DO NOT OPEN!
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME VALUE 0.1A SloBlo,
125V FUSE for 120V-130V or T 0,1 A FUSE for 230-250V UNITS.
ATTENTION:
REMPLACER UNIQUEMENT PAR UN FUSIBLE DE MEME TYPE ET DE A, FUSEBLE 0.1 A Slo Blo / 125V POUR OPÉRATION
120V-130V • FUSEBLE 0,1 A POUR OPÉRATION 230V-250V
