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| Re: Horns, transmission lines and reflex cabinets [message #21314 is a reply to message #21206] |
Mon, 03 October 2005 10:41   |
Retsel
Messages: 23
Registered: May 2009
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Chancellor |
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Here is a recent testamonial which describes the improvement of a Lowther DX4 in a back horn over that of a reflex box. http://www.audioasylum.com/forums/hug/messages/94352.html Transmission lines are probably between a reflex box and a backhorn, but still would not have the same quality of sound that a backhorn provides. Again, perhaps the most important benefit of backhorns is that the backhorn allows for a sufficient expansion and low frequency boost that does away with crossover components for these very fine drivers. Retsel
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| Re: Horns, transmission lines and reflex cabinets [message #21316 is a reply to message #21315] |
Mon, 03 October 2005 14:41 |
Retsel
Messages: 23
Registered: May 2009
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Chancellor |
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Thanks for your opinion Wayne and it is not rude by any means as we all must carefully consider the claims made by these posts (including this one) before acting on them. Indeed those are words of wisdom to all our readers. Although while I also have found some of these posts to be "blather," I have found that many have some very important information or observations which deserve my consideration. Indeed, some of the best tweaks I have made to my audio system came from such posts. I did not post this comment for your eddification as your opinions seem so strong that I really did not think that you would change your mind based on this individual post, or even a multitude of such posts. However, for the thousand or so other readers out there who have not made up their minds, this post should help them to consider choosing, or at least listening to, a back horn before they might choose a reflex box or transmission line. They may still choose a reflex box or transmission line for WAF issues or for cost, if they can get a reflex box cheaply on E-bay from one who has upgraded to a backhorn, but they are doing so with the full knowledge of the tradeoffs in musicallity involved. Retsel
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| Re: Horns, transmission lines and reflex cabinets [message #21317 is a reply to message #21316] |
Mon, 03 October 2005 15:15 |
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Wayne Parham
Messages: 18835
Registered: January 2001
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Illuminati (33rd Degree) |
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Don't misunderstand me. I like backhorns. But I also like reflex and transmission lines. They are more similar than different. It's the specific implementations that I'm more interested in, because that gives you something to talk about. Without specifics, you're not able to make comparisons.Consider a tapered transmission line with its closed end having the same cross-section area as a backloaded horn, its mouth at the same position and area, expansion rate and driver the same. What I am describing to you are two identical boxes, one called a transmission line and the other called a backhorn. Without more specificity, you can't necessarily say there's a difference. Another example is to compare a 2ft3 transmission line or backloaded horn with a 4" or 6" 90dB 20 watt driver to a 10ft3 reflex box with a 95dB 600 watt flux-stabilized 18" woofer. It's not really a fair comparison, because the scale doesn't match. The reflex box will beat the TL/BLH in terms of efficiency, maximum output, distortion and extension. It won't work as a full range driver, but my point is that without more specificity, the conversation has no reference point and therefore no meaning.
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