Description
This Jensen Transformers ISO-MAX model PC-2XR "Pro to Consumer" converter
facilitates a proper connection from balanced audio sources to
unbalanced audio equipment, while also providing isolation to eliminate
ground loops that can cause hum and noise. Internal Faraday and
magnetic shields reject RFI and hum pickup.The PC-2XR is an audiophile-quality device
with a -3dB bandwidth that
extends from 0.5 Hz to 145 KHz, providing full audio frequency response
from subsonic to ultrasonic. Unlike simple cable adapters, the design ensures that the
unbalanced equipment gets the correct nominal -10dBV drive levels while
elegantly handling the required balanced to unbalanced conversion.
Simply stated, this is the "right" way to interface XLR to RCA!
The PC-2XR is a two-channel device, making it ideal for stereo
applications. It has XLR input connectors and RCA output
connectors. It also has a removable barrier strip, which is useful
for a variety of custom wiring configurations. The PC-2XR is
housed is a sturdy metal enclosure, measuring 6.94" W x 3.5" D x 1.71"
H, including the flanges. The flanges have mounting holes, which
are handy for permanent installations.
The PC-2XR is made in the USA, is backed by the manufacturer's
comprehensive one year warranty, and has a remarkable 20 year warranty
on the transformer device itself.
Ground Loops?
(or why the best planned systems sometimes
sound bad)
Aside from the obvious need to match levels, impedances, and
balanced/unbalanced conditions, there is another benefit to the PC-2XR. It
is a subject that is seldom discussed in manufacturers publications, or even in
magazines of the trade, but ground loops can happen even in the most carefully
planned A/V system. When ground loops happen, the result is unwanted hum.
This hum is often heard in powered
sub-woofers, and may also be present in the main channels as well.
Ground loops are often the result of the fact that large amplifiers are often
powered by a different electrical branch circuit than the rest of the A/V
system. It's easy to understand why, because it may require so much power that a single branch circuit just
isn't enough to handle the load.
The result is that the neutral or ground side of the two circuits can be at a
slightly different potential. It can be because one of the circuits is
loaded more heavily than the other, or because one run is longer than the other,
or any number of other reasons that are beyond the scope of this article.
Ideally, ground loops would be prevented at the design level, but if you are
working with an existing room, it is not always possible or practical.
Ground loops can occur in a mobile installations as well, because all of the
amplifiers in the system have their own internal power supplies, and voltage
drop percentages in a 12 volt system can be even more challenging than in a home
system.
The Solution to Ground Loops
The Jensen Transformers PC-2XR is elegant in its simplicity - just insert it in the audio line.
For example, place it between the preamplifier
outputs and the amplifier inputs. For best results, the output cables
should be under 3 meters (10 feet) in length.
Immediately, the effects of the ground loop become
a non-issue. Problem solved. There are not too many things that one
can install in an audio system that can do so much with so little effort.
Why Cable Solutions?
In-stock items are ready for immediate shipment, and no one works
harder than we do to get your order shipped out to you fast! On business
days, orders that are funded by noon will ship the same day. Orders funded
on weekends or holidays will ship the next business day.
Customer service is our first priority. We do our best to help you find
the best solutions for your particular application. We're enthusiasts too,
so we know what it's like to wait for cables and accessories that are needed to
hook up new gear. We also know how important it is to be able to get a
response when you need help, so you'll often find us working long hours in an
effort to get you the answers that you need.
Design excellence, high quality materials, meticulous workmanship, and
superior service...put it all together and you get a superior product.
Don't get stuck with bad advice, poor service, slow shipment or an inferior
product. If you want the best, here it is.
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