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Post subject: Low limit of usage temperature?
Posted: Wed Dec 07, 2016 12:56 am
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Location: Russia, Chelyabinsk reg (Ural)
I cannot find any info about using Passport at low temperatures. How low it can be?
About Passport Event or 300Pro.


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Post subject: Re: Low limit of usage temperature?
Posted: Sat Dec 10, 2016 3:58 am
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Location: Province de Québec, Canada
tomcat01 wrote:
I cannot find any info about using Passport at low temperatures. How low it can be?
About Passport Event or 300Pro.


What did you call low temp ?

You can use any solid state gear at colder temp than you can stay.


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Post subject: Re: Low limit of usage temperature?
Posted: Mon Dec 12, 2016 5:21 am
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Location: Russia, Chelyabinsk reg (Ural)
I dont aware what is "solid state gear"applied to Fender Passport, sorry, im not so familiar with english too :)
I mean about -15..-25 by Celsium
I bother about thin-film twitters and paper diffusors of the bass and middle speakers.
We're using now some model of good old Fender Passport, I do not exactly name it. It has five similar speakers on each acoustic. They are widerange and have good rugged diffusors that periodically works at low temperatures I saw, and works over years.
And now we need yet another Passport for the occasionally low temperature' perfomances.
So that is my question :) and there are no any indications in the Manual about allowable temp. range of use.


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Post subject: Re: Low limit of usage temperature?
Posted: Mon Dec 12, 2016 5:31 am
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I use my car radio at these wheather, speakers are on the trunk at -25 C sometimes. like all people in Canada.

Lots of music gear are use in Montréal, Canada in winter for outside partys.


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Post subject: Re: Low limit of usage temperature?
Posted: Thu Dec 15, 2016 5:27 am
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Fender Passport is not a car radio/audio. Car audio speakers are initially designed for a hard circumstances, such as superwide temperature range, high vibrations, etc. Where Fender Passport may not.
But I do not want to make guesses, parallels and hunches :)
I'd better like to read it in the manual. But I cannot find this info :(


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Post subject: Re: Low limit of usage temperature?
Posted: Thu Dec 15, 2016 5:35 am
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tomcat01 wrote:
Fender Passport is not a car radio/audio. Car audio speakers are initially designed for a hard circumstances, such as superwide temperature range, high vibrations, etc. Where Fender Passport may not.
But I do not want to make guesses, parallels and hunches :)
I'd better like to read it in the manual. But I cannot find this info :(


Do you read all what I write ?
Lots of music gear ( speakers many brand, not car speaker ) are use in Montréal, Canada in winter for outside partys at -20F .

I desagree with you car speakers are not more tough than regular speaker

I'm not afraid to use Passeport in cold temperature.


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Post subject: Re: Low limit of usage temperature?
Posted: Wed Dec 21, 2016 12:30 am
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Thank you for you opinion.


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Post subject: Re: Low limit of usage temperature?
Posted: Mon Dec 26, 2016 10:42 am
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Welcome to Winter.
Most commercial electronics are rated to 0C and will take much colder. Mechanical systems with CD or Phono or tape will not.
Electronic components are rated for 0C or -25C
The mil-spec stuff we built for the war machine required -25C operating and -50C storage. Very few failed.
The equipment can generally do well at low temps because it is self warming after operating for a while.
The commonest problems will be that plastics become brittle and shatter instead of bounce. I haven't seen vioce coil failures from cold speakers, but the difference of expansion of plastic and metal parts probably means some long term wear probably does occur to voice coils and suspensions. I haven't been able to attribute these types of failures to cold temps.
The big issue I have seen is quickly warming cold equipment. Large speakers in sealed back cabinets are especially vulnerable. The front basket warms the front of the magnet, but the rear of the magnet remains cold. I have seen large ceramic magnets split into front and rear sections .
Condensation on cold amps results in water droplets forming on exposed metal parts. When the droplets evaporate, they concentrate dust and contaminants onto switch contacts and pot wiper contacts, causing long term noise and operation issues..
These problems can be minimized by keeping your gear in cases that let it warm up slowly. At a minimum, place them in plasiic bags before you bring them inside so that you keep the cold dry air surrounding the amps and prevent the warm moist air from condensing inside the equipment until it warms back up


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