Actually, these loops are often a "retlif" ("filter" backwards) and their main purpose is to prevent your equipment from putting noise on the power line. They are often necessary for the equipment to pass muster with regulators.
Strange thingie in power cord of used Adcom amp
I just bought a used Adcom GFA 6000 5-channel amp. A small segment of the power cord has been taped into a small loop about an inch and a half in diameter. Inside this loop there is a small, open plastic box containing an even smaller, hollow half-cylindrical piece of metal. The metal looks like a permanent magnet, but does not exert any noticeable magnetic field (it does not attract a nail). The power cord itself is intact with no splices or breaks. The electrical tape simply holds it in a loop around the small metal object.
The seller of the amp tells me that it is a "tloroid" (typo for toroid?) and that it "came that way." He says it reduces interference and noise. To test the amp, I plugged it directly into the wall outlet with no protection or conditioning. All five channels actually sound pretty good driving a KEF 104.2 -- there is no hum or buzz, and only a barely audible hiss with no source playing.
What is this mysterious gadget? Should I leave it in place, or remove it? When the amp goes into my system, the power cord will be plugged into a Monster PowerCenter HTS850.
Thank you.
The seller of the amp tells me that it is a "tloroid" (typo for toroid?) and that it "came that way." He says it reduces interference and noise. To test the amp, I plugged it directly into the wall outlet with no protection or conditioning. All five channels actually sound pretty good driving a KEF 104.2 -- there is no hum or buzz, and only a barely audible hiss with no source playing.
What is this mysterious gadget? Should I leave it in place, or remove it? When the amp goes into my system, the power cord will be plugged into a Monster PowerCenter HTS850.
Thank you.
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- 6 posts total
- 6 posts total