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<blockquote data-quote="BJ James" data-source="post: 1729" data-attributes="member: 87">I have a job coming up where they are having competitive rowboat races and want speakers (around a dozen) setup along a parrallel street for a distance of about 800&#039;. It is mainly for announcements, and play by play of the races, but also to play canned music and a couple acoustic style musical numbers that they want sent out through the whole area. The usual 70v horns aren&#039;t going to cut it for this, so I was thinking of using a bunch of our 12&quot; and 15&quot; fullrange passive boxes and buy a bunch of 100w 70v transformers for them. I have a spare PL340 that is capable of driving 70v without a step up transformer, add a small mixer and I&#039;m good to go. I have a pile of 12 and 14g speaker cable. Assuming this all sounds reasonable, they also want the program material to be played though the concert PA during certain times. We are also supplying a system for live entertainment throughout the day. The mixers an these 2 systems will be about 800&#039; from each other. I was just going to run a balanced line from one mixer to the other. Since they are on 2 different electrical services, will I need an XLR iso transformer? I ask, because the distributed system will be plugged into a GFCI and I recall haviing problems in the past when encountering these.&nbsp; Thanks,BJ</blockquote>

[QUOTE="BJ James, post: 1729, member: 87"] I have a job coming up where they are having competitive rowboat races and want speakers (around a dozen) setup along a parrallel street for a distance of about 800'. It is mainly for announcements, and play by play of the races, but also to play canned music and a couple acoustic style musical numbers that they want sent out through the whole area. The usual 70v horns aren't going to cut it for this, so I was thinking of using a bunch of our 12" and 15" fullrange passive boxes and buy a bunch of 100w 70v transformers for them. I have a spare PL340 that is capable of driving 70v without a step up transformer, add a small mixer and I'm good to go. I have a pile of 12 and 14g speaker cable. Assuming this all sounds reasonable, they also want the program material to be played though the concert PA during certain times. We are also supplying a system for live entertainment throughout the day. The mixers an these 2 systems will be about 800' from each other. I was just going to run a balanced line from one mixer to the other. Since they are on 2 different electrical services, will I need an XLR iso transformer? I ask, because the distributed system will be plugged into a GFCI and I recall haviing problems in the past when encountering these. Thanks, BJ [/QUOTE]

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