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I used to see two brands of whole house surge protectors both of which had high frequency filters. I couldnt remember the one aI wanted and so bought the Environmental Potential brand which has made a noticeable improvement in my system and I'm 78 with the usual age-related male hearing problems. I know there is at least one other protector with a high frequency filter. Anybody know what it is?
I had a EP protector wired into my board as well with a bonus of better sound as well...not a huge amount, but it was unexpected and welcomed.
If you indeed have hearing problems and have not addressed it, do so...if you get the right fit/performance, it will be a revelation in the enjoyment of your system.
I do not know anything about whole house surge protectors with filters. However, my feeling is that a filter would not make sense for this type of circuit since the purpose of the protector is to divert the surge. It is not intended to pass any current through the house circuitry. So exactly what would the intent be for such a filter?
Regarding the Environmental Potentials unit: I looked into this last year. It contains sacrificial MOV's which eventually render the unit inoperable and it must be replaced. At $750.00 and the electrician's service charge this seemed to me a very poor value.
All the units to my knowledge use MOV's so there is not much choice. I opted for the Eaton HSPT2ULTRA recommended for high lightning prone locations. No unit protects against a direct lightning strike but aids in diverting resultant surges from nearby strikes. I paid an electrician $200.00 for the unit including installation. This was a much better value proposition than the Environmental Protection unit since they both will eventually wear out anyway.
For recommendations please see both links:
I installed a similar unit, a number of years ago. At the time the unit claimed to protect from lightening. I happened to look back at the same product a few years later and saw that the claim to protect from lightening was replaced with a disclaimer similar to Eaton about lightening and simply said it was a surge protector. I looked at other similar products and found the same thing. Does anyone happen to know the history, of this? Possibly the result of lawsuits?
I'm not technically informed, but I do know that frequencies high in the spectrum are bad for good sound. It's well known that digititus from cd players, dacs, etc feed back through the circuits and interfere with good sound as do all the electric motors in your house. The Environmental Protection nunit eliminates them. I dont know how. All I know is the very noticeable difference it made to my system and 65" plasma tv.
as the common phrase goes "the difference was not subtle".
It is hard to dispute personal experience. In my case, I supplement the whole house protection with several point of use units which include some filtration but no MOV's.
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