During the implementation of QNPS-1, besides me a bit of practical experience, I began to think about the possible evolution of the project.
I would say that the developments could go in two directions:
a) improving the design specifications and
b) solve the problems / constraints encountered in the first implementation
With regard to the specific possible developments are currently as follows:
- integration of electronics in the speaker. This greatly simplify the wiring harness, and would reduce the uncertainties related to Qt at low frequencies.
- replacement of commercial amplifiers with single high-quality (Class A? Class D? Tubes? Open end?). This, in addition to (perhaps) improve the sound, would ensure a consistent baseline across all channels, and simplify the integration of the above.
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- increasing the streets. Without risking too much with crossover cross-over, you might groped a five-way (two octaves per band): Sub, Woofer, Mid, Mid-High, Tweeter. This would improve the spatial accuracy according to the NPS.
- managing the effects of diffraction. Size allowing you might think of a geometry that improves the situation, at least on average.
Regarding the current limitations, surely there could be improvements in the following areas:
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- simplifying the assembly. The sequence of assembly should be designed at the table, so that you can paste pieces of this size by yourself ripetto the tolerances set.
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- panel-interface structure. If you keep the current geometry, the system is now designed to mount the panel "simple dipole" structure "H-frame dipole.
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- to improve the finish. The tubing should be trapped without curbs and exposed components must be painted before final assembly.
For the moment I decide to split the posts made in various parts of the project:
- structure and geometry
- transducers
- cross-over
- amplifier
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