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Home Theater => Audio => Speakers => Topic started by: jay2 on Aug 19, 2014 at 10:37 AM

Title: 70v/100v Speaker System
Post by: jay2 on Aug 19, 2014 at 10:37 AM

Hello,

Would like to know more about this kind of speaker system. Can you enlighten me the pros and cons of this system.

I would like to upgrade the speaker system sa church namin ang gamit ay 100v system with a 100v sakura  PA500 amplifier, 8 speakers, 4 channel mixer and 31band equalizer. Dumadami na yung nagsisimba at kailangan na din lagyan ng speaker sa labas.

Pinagiisipan ko ay ilipat ko sa labas yung 100v system at lagyan ko ng 4pcs active speaker sa loob. Ang problem ko ay baka mabingi yung malapit sa speaker at yung mga speaker nakatalikod sa altar, baka hindi madinig ng pari at maglagay pa ako ng monitor speakers para lang sa kanya.

In terms of budget, maliit lang budget kasi maliit pa yung community.

As of now ang nabasa ko na advantage ng 70v speaker system ay matipid sa wire.

Thanks

Title: Re: 70v/100v Speaker System
Post by: tony on Aug 19, 2014 at 11:52 AM

yes, you can design that system, a 70.7 volt system
can be run even using telephone wires to feed the speakers....
in order to design the transformers , you need to know how many
speakers are going to connect to your system...
at the very least you need to consider how many speakers
will be connected, what is the wattage rating of the speakers...
you will need a main distribution matching transformer
to convert that 8 ohm output of your amp to 70.7 volts,
then each speaker will have its own transformer
to convert the 70.7 volts back to 8 ohms...
very simple really...
 

Title: Re: 70v/100v Speaker System
Post by: jay2 on Aug 19, 2014 at 07:09 PM

Thanks sir tony for the response,

Yung mga speaker sa church may switch sya na 2.5, 3.5, 5.5 & 7.5 yata yun. Kung magdadagdag ako baka ganun din na may kasama ng matching transformer.

Sir pano ang computation nun kung gaano karami speaker ang pwede kong ilagay? or pwedeng magdagdag ng magdagdag lang ako

Title: Re: 70v/100v Speaker System
Post by: tony on Aug 20, 2014 at 05:45 PM

Quote from: jay2 on Aug 19, 2014 at 07:09 PM

Thanks sir tony for the response,

Yung mga speaker sa church may switch sya na 2.5, 3.5, 5.5 & 7.5 yata yun. Kung magdadagdag ako baka ganun din na may kasama ng matching transformer.

Sir pano ang computation nun kung gaano karami speaker ang pwede kong ilagay? or pwedeng magdagdag ng magdagdag lang ako

adjustment ng local speaker level...
me nabibile na ganyan sa deeco, ang problema mo nalang yung main distribution transformer...