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In the Forum: Horn-Loaded Speakers
In the Thread: Rare Onkyo HM-300 MK2 Horn...need info
Post Subject: Onkyo HM-300MK2Posted by Romy the Cat on: 9/29/2016
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Hello, Pawel.
I never heard nether about Onkyo HM-300MK2 or about
anybody who use it. It looks like it is one of many obscured Japanize drivers,
and they made plenty of those. A simple googling said that it has 2 inches
voice coil, duralumin diaphragm, 8Ω / 30W 111dB,cut off 300Hz, reproduction
frequency band 500 ~ 12kHz, Alnico magnet about 13.7kg. Not a lot of
information but it is what you get. The driver look like was used in Altec 811 like
horn, not 511. The combination of narrow horn, smallish voice call suggest that
a reasonable crossover would be around 750Hz but if course it need to be heard
to make any further judgments.
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