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Old 30th May 2007, 02:46 PM   #1
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Default Heil AMT Specs?

Does anyone know of any published specs for the Original Heil AMT drivers? Power handling. sensitivity etc?? LF limit etc?

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Old 30th May 2007, 03:13 PM   #2
badman is offline badman  United States
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If you mean the AMT1, it's come in many variants. There are both 4 and 8 ohm versions of the ribbons. The 8 is high 90s, (98ish), and the 4 is of course more like 101. (2.83V). Power handling is hard to say, but needs to be somewhat limited with many as some of the membranes are polyethylene and sensitive to a lot of heat. Most AMT1s start their steep rolloff around 1k, but have a slow rolloff below 2k. There's some measurements in older amt threads if you search carefully.
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