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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Theory and common sense. posted by sser2 on February 24, 2007 at 18:06:21:
I was surprised at just how much offset there is in the acoustic center of the coaxials. It appears that even in the much more expensive TAD drivers such as their 5" (or thereabouts) version, the mid and tweeter are not aligned in time. In fact, the shallower the coax, the more delta in the impulse. This does not prevent good phase tracking of the crossover since a small amount of delay control is possible even passively, but these won't ever work ideally in a time-aligned system. They can't. The impulse response makes it clearly evident.I don't think that it's necessarily bad to advertise correctly the attributes of a system as designed since most systems are used with the driver axis not far from straight ahead. Even at 15 degrees I suspect that most systems are acceptably close to the design axis.
It's a bit over the top to suggest head positioning and such, but some systems did exhibit a need for "head-lock". That was somewhat the case with my Apogee ribbons. It shows the benefits of auditioning before purchase. If you can't or won't do that, then it's just buyer beware. People know that systems sound different off to the side.
dlr
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Follow Ups
- Re: Theory and common sense. - dlr 08:19:13 02/25/07 (2)
- Coaxials and phase - Tom Brennan 08:41:43 02/25/07 (1)
- Re: Coaxials and phase - dlr 08:56:06 02/25/07 (0)
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