Hefner Labs CGLI-1 Cable Ground Loop Isolator. MSRP $50USD

Eliminate Hum-N-Buzz when using Cable Service with your TV/VCR OR your PC's TV Card, Sound card, and/or HiFi System! Without the Annoying Pops you get with RCA Type Ground Loop Isolators or the Heavy signal Loss of the DIY variety! Cable Modem, Cable TV/FM, and community TV system ground loop HUMMING and picture "Hum Bar" can be eliminated by installation of a Cable Ground Loop Isolator

This Product has been discontinued in favor of the new CGLI-2 which has a MUCH Better S/N Ratio and line loss characteristics Than the CGLI-1. Please :: Click Here :: For the CGLI-2

A typical ground loop humming problem occurs

• When you connect your computer sound card to a stereo receiver which is connected to a Cable TV wall plug.

• When you plug your VCR into your stereo system
• When you plug your TV into your stereo system
• When you plug your Cable Modem into your computer that is plugged into a stereo system

  This is because your cable TV ground voltage is not zero relative to the house electrical system ground. This difference causes a 60Hz hum in USA, and 50Hz for Europe. This hum can damage sensitive electronic equipment and often reduce your cable modem speed

Do you need a CGLI-1 Cable Ground Loop Isolator? Try these checks below:

• The noise goes away when I disconnect my computer's power cord (3 prong).

• The noise goes away when I disconnect the sound card from my receiver.
• The noise goes away when I disconnect the Cable Connection from ALL equipment that is in some way connected to my computer and/or audio equipment (Cable Modem, Stereo System, TV / TVCARD, VCR, Cable Box)
• The noise goes away when I disconnect my TV and VCR

  If you answered YES to any of these questions, then you need a CGLI-1 Cable Ground Loop Isolator

How the CGLI-1 Isolators can be used to solve the problem

The most effective way to stop this 60Hz or 50 Hz line noise is to break the galvanic connection which causes the ground loop, which is what using a ground loop isolator does. A CGLI-1 is better than an RCA type ground loop isolator for situations where Cable TV is involved because it stops the problem at the Source - the Cable outlet and it Does not have the annoying and potentially damaging pops that RCA Audio type Ground Loop Isolators have. The CGLI-1 Cable Ground Loop Isolator will work with ALL forms of cable TV (including Digital Cable).

The Diagrams below are samples on how to connect your CGLI-1 Cable Ground Loop Isolator into your entertainment system.

Features of the Hefner Labs CGLI-1 Cable Ground Loop Isolator

• Compact design With Heavy Shielding for Minimal interference and Low signal loss

• High isolation drastically reduces 60 Hz ground currents and protects your sensitive equipment
• Capacitive based design prevents broadcast channel interference
• LESS loss (Better Signal) than the transformer based design
• WON'T short out line power injectors or interact with them in any way
• Cable Modem Compatible
• Prevents annoying hum or buzz in sound systems or "hum bars" in video systems
• Frequency Range of 5Mhz - 1300Mhz bandwidth spans VHF/FM/UHF/CATV spectrum
• Doesn't have the annoying and potentially damaging pops that RCA Audio type Ground Loop Isolators have
• FAR Better S/N Ratio than the DIY type Cable Ground loop isolators for a MUCH Crisper Picture and MUCH LOWER Signal loss than the DIY type

NOTE: We have received reports from users that the CGLI-1 does NOT work with Digital Cable Boxes - See details HERE

RCA Audio type Ground Loop Isolators "pop" (In some cases You can literally see the cones on your subwoofers jump HARD when this happens) when you adjust the volume from zero. These pops Can Damage your system and speakers. This happens if you use a RCA Audio type Ground Loop Isolator between your pre amp and your amp (or your pc and your home theater if you use the pc to control the volume) If you use a CGLI-1 you will not need the RCA Audio type Ground Loop Isolator in your system AT ALL

Installation of the Hefner Labs CGLI-1 Cable Ground Loop Isolator

You will notice that one side of the CGLI-1 has a stripe and/or a painted tip. Plug the Cable Service into the Marked side(The onboard shield is grounded to the Marked side and the cable company feed will most often be grounded just outside the house). Plug your Equipment into the Unmarked Side. Install the CGLI-1 so that it is between your cable service and ALL equipment that connects to your sound system. If you have a splitter splitting the cable service between multiple pieces of equipment in your setup then install the CGLI-1 between the splitter and your cable service outlet.

Customer Feedback Area - See What Customers have to say about the CGLI-1

Submitted by Jan Vandermeer EBAYID: jv595643

It works great! Thanks a lot. I'll give you a positive comment on Ebay.

Submitted by David DeSimone EBAYID: desimd

Would you like to see more comments or add you own? Click HERE to go to our Forums us and tell us how the CGLI-1 worked for you!