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In Reply to: RE: Round 80hz exponential horn usage 100 hz to 500 hz posted by SETisfied on February 04, 2017 at 20:00:23
Mahogany is the traditional wood used by patternmakers due to it's stability.
The Sierra-Brooks horns were mahogany. The Edgar Salad Bowls are Poplar.
Many horns have been made of rings of Baltic Birch plywood or MDF.
I used MDF for mine. Can't say if there is any difference in sound, as I don't have a way to compare differences without building more horns.
Some of Bruce's horns are made of poplar and some are made of maple.
I have a pair of them.
Many years later Dr. Edgar discovered that maple was just too hard and switched to poplar. I never had a chance to hear them. I still would worry that poplar could start to squirm with time. The fir, if dried properly, would be very stable and much less expensive to make a horn with thick walls.
I know Dr. Edgar thought those SIERRA horns were very wrong, though they were visually stunning.
From my limited experience I cannot imagine anything sounding better than Inlow's papier mache horn for 400 hz and above. But I am a partisan.
I'm aware of at least one 300hz tractrix horn turned out of Brazilian rosewood. This horn is a part of Edgarhorn Titan system. The outside is just straight and does not follow a horn contour. It is massive and it is gorgeous! Must've cost a fortune.
1" 650hz horns. I stained mine to match a vintage console/speaker cabinets set, turned out great. Horns with high WAF that sound great too.
Poplar usually doesn't take stain well. Glad I have the maple.
I would love to add Inlow's 135hz horns below these, but they're just too deep for my listening position.
Thanks for jogging my memory. I have heard the Sierra brooks horns. The we're gorgeous. I did not know what wood they used.
MDF is heavy but stable and dense
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