Heil AMT Specs?

Zero Cool · 30th May 2007, 02:46 PM

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

Zc

badman · 30th May 2007, 03:13 PM

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.

30th May 2007, 02:46 PM	#1
Zero Cool Audio Junkie diyAudio Member Join Date: Sep 2004 Location: MN	Heil AMT Specs? Does anyone know of any published specs for the Original Heil AMT drivers? Power handling. sensitivity etc?? LF limit etc? Zc

30th May 2007, 03:13 PM	#2
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	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. __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

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