E-mailed Centerville Electronics about Whites replaceable covers for ear muffs. No reply. Does any one know where i can get covers from .I am in Australia. Regards.
Has anyone tried them with a metal detector?
I came across an article which displayed some Bose audio sunglasses. The concept was not something I had really considered but when you read about them they are built for athletes that need to be aware of their surroundings to avoid accidents. We detect in areas where we need to avoid accidents and critters also so hearing outside of headphones is beneficial. This would also have the potential of eliminating hot and or uncomfortable headphones for me in the desert. I don't think they could work well at the beach with crashing waves.
Maybe we can begin a review of these Bose and other audio sunglasses here. Of course there would need to be some with LL and other technical specifications to work with our equipment but it could also be a new product idea for one of these companies.
Last week, I attempted to power on the ML 80 headphones I use with the Equinox 800. I purchased these new in March 2019. They would not power on. I charged them: the 3 red LEDs flash for about 10 minutes and then turn off, as if headphones were charged. But, the headphones still will not power on.
I attempted to contact my dealer and ML, but neither have yet responded. Does anybody have any novel ideas to try, or troubleshooting, remedies? I would greatly appreciate the help!
Over the years we've touched on the difference between High Impedance vs. Low Impedance headphones. Historically, the headphones designed for detecting have been High Impedance, and all were equipped with 1/4 inch headphone plug. Everyone developed a preference for their brand because of the way they fit and sound. These days more detectors are set up for the 1/8 inch headphone plugs and a few detecting headphones have offered that choice. The technology is clearly moving away from all wired headphones in favor of wireless. The market is really directed at music and communication devices, not detecting. I'm just curious how the impedance issue affects the newer technology. The latency of wireless is a completely separate discussion, but may be necessary to understand the importance of Impedance.
I have always used in ear monitors rather than over the ear headphones. It's just more practical in the desert environment of sunny Yuma. The majority of "ear buds" for lack of a better term are low impedance designed for listening to music on low powered handheld players. The high impedance ear monitors are available but quite expensive. The GPZ tends to overpower el cheapo ear buds and produces a really unpleasant sound.
My question is twofold: what was our understanding of the importance of Impedance in the old days with wired headphones and how/if that has changed with wireless.
We detectorists are accustomed to dealing with nature (wind noise) and human nature (traffic noise) while detecting. In a significant section of the USA, some of us get an added bonus (err, annoyance?) a few times in our lives. I assume most of you aren't aware of this 17 year occurrence of cicadas known as Brood X. Here from Wikipedia are the states most impacted:
The brood's next major emergence will take place during 2021 in these 15 states: Delaware, Georgia, Illinois, Indiana, Kentucky, Maryland, Michigan, North Carolina, New Jersey, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and Washington, D.C.
I don't remember 1970's emergence and in 1987 I was in California and Saskatchewan the entire time they were performing. But I experienced the 2004 emergence. It's pretty impressive. Cicadas are present at least in the Eastern USA every year. They typically compete with crickets in terms of volume and audio frequency (to my untrained ears, anyway). However, the Brood X is like sitting in the front rows of a rock concert compared to the comfort or your living room listening to music. Unlike crickets, they don't reserve their singing to merely the evening hours, either. Here's an excerpt from NYTimes regarding their audio volume:
Sounds up to 90 decibels could be measured standing directly under a tree filled with cicadas. A motorcycle, by comparison, can put out sounds up to 95 decibels, which can damage hearing after about 50 minutes of continuous exposure, according to the federal Centers for Disease Control and Prevention.
You don't need to be under a tree to experience the impact, either.
BTW, the 17 year emergence cycle is an example of nature understanding mathematics. 17 is a prime number (divisible by only 1 and itself if restricting to whole numbers). The reason, though, with two competing hypotheses, is still being investigated.