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The Jensen Transformers ISO-MAX CI-2RR Stereo Audio Ground Isolator not only eliminates
hum and buzz, but also enhances audio quality by reducing spectral contamination caused by ultrasonic and RF interference.
Here are the audiophile-quality specifications:
- Eliminates the inherent ground noise coupling mechanism
- Common-mode ground noise rejection of 95 dB at 60 Hz
- Wide bandwidth: -3dB at 0.25 Hz and 25 KHz
- Handles signals up to 7 volts at 20 Hz or 11 volts at 30 Hz
- Input impedances are 49 kOhm when driving typical 47 kOhm inputs
Designed for use in the finest home theater and automotive applications, this audiophile-quality isolator is
equipped with high-grade nickel-iron-molybdenum alloy cores, ensuring extremely low distortion and ruler-flat
frequency response. RF interference rejection is maximized by Faraday shielded windings. High quality
gold-plated connectors provide high performance connections and maintain long term reliability.
The CI-2RR 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)
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 and buzz.
Ground loops are often the result of the fact that in a complex A/V system, some components may be powered
by a different electrical branch circuit than the rest of the A/V system. 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 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
The Jensen Transformers CI-2RR is elegant in its simplicity. Just insert it in the audio line and 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. It is a small device, 4.32"
long, 2.60" wide, and 1.45" tall, so it fits just about anywhere.
Don't Forget the Cables!
Good cables are very important in the fight against hum and noise. You will need at least one short patch cable
in order to insert the CI-2RR into your signal path, and you may want to consider upgrading your existing cable(s)
as well. The CI-2RR does not include any cables, but if you need them, we have some excellent audio interconnect
cables available. Please
click here to see them!
Why Cable Solutions?
We have this item in stock and 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.
Miscellaneous
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