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Westgate Thunderbolt
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Wed Oct 10, 2012 9:38 pm

Are those 100 watt drivers? They look to be the same size as the drivers used in the emergency vehicle sirens.
Owner of a Federal Electric Model 2, Federal Sign and Signal SD-10, Federal Sign and Signal 1000(T) and a H.O.R. Si-Rex 7:10 Omnidirectional

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Bryan
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Wed Oct 10, 2012 9:53 pm

Westgate Thunderbolt wrote:Are those 100 watt drivers? They look to be the same size as the drivers used in the emergency vehicle sirens.
Pretty much the case, they're a bit bulkier than the ones on emergency vehicle sirens now-a-days. They are 100 watts each @ 4.2 ohms.
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NeoThunderBolt85
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Fri Oct 12, 2012 4:24 pm

Those drivers remind me of compression drivers for PA audio systems. Does that inspected sticker say 9-18-85?? Things as old as I am.
Building a quarter scale Thunderbolt!

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Bryan
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Fri Oct 12, 2012 5:10 pm

NeoThunderBolt85 wrote:Those drivers remind me of compression drivers for PA audio systems. Does that inspected sticker say 9-18-85?? Things as old as I am.
Yup the inspection sticker reads 9-18-85 and the serial number ends in "K85" as well. So it is definitely for 1985.
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holler
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Fri Oct 12, 2012 6:16 pm

Be real careful with the inside part of those horns. The plastic "bugle" inside the cone is easy to break loose.

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