In use for more than 20 years, Knoll patent pending V-Pad
Transformer-Free™ volume controls are the safest, most
reliable high power volume controls available anywhere. The POWERMATCH™
design automatically impedance matches, eliminating the need for
a load center or stereo interface while allowing up to 24*
VC100pm's and speakers to be safely connected to one amplifier.
This saves equipment and wire costs while reducing installation
time. The relatively small size of the VC100pm with its clearly
superior sound quality makes it the ideal choice for all
systems.
The
patent pending VC100pm has a smooth action with a lighter "feel"
when adjusting levels. The VC100pm V-pad design does not
generate heat like a transformer or L-pad that can dissipate
large amounts of power in low and off positions creating early
failures, wall damage or even a fire hazard. Nor is there any
sonic degradation at low operating levels. Instead the VC100pm
presents the listener with a full frequency response and
original dynamic range at all volume positions and power levels.
The stereo signal passes to the speakers without the compression
effect associated with all transformer volume controls.
Knoll
V-pad Transformer-Free™ technology is the best and most reliable
solution for new construction, renovations and upgrades of
existing stereo systems.
* The
maximum number of VC100pm's per amplifier is dependent on the
minimum speaker impedance rating of the amplifier or
receiver.Fig 1. Volume Control Frequency Response
With
identical paralleled inputs and 8 ohm output loads, the -11 dB
attenuation output frequency response of a Knoll
Transformer-Free™ versus a top-of-the-line major brand
autoformer volume control is shown.
Speaker wire for the VC100pm should be copper, minimum 18 gauge.
Runs longer than 33' (10 m) should be minimum 16-14 gauge wire.
Two wire pairs (left and right) are run from the stereo
amplifier, receiver or nearby VC100pm to the VC100pm volume
control, then one wire pair continues to each speaker. When
"pre-wiring", leave an extra 3' (1 m) at each end to allow easy
component installation.