Considerations on the Optimal Design of True Ribbon Loudspeakers.
A Cautionary Tale.
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Introduction - April 1, 2003.
Overview - April 15, 2003.
What is a True Ribbon? - April 2003.
1. FREQUENCY RANGE ISSUES
- 1.a. Frequency range
- 1.b. Polar response
- 1.c. Ribbon appature influence
- 1.d. Frequency range and response shape as a function
of ribbon mass
2. MAXIMUM SPL LEVEL
- 2. Ribbon volume stroke - parabolic motion of ribbon
3. DISTORTION
- 3.a. Ribbon corrugation and partial resonances
- 3.b. Ribbon-to-pole face gap tolerance
- 3.c. Ribbon electrical return method and electromagnetic
ribbon centering in magnetic gap
- 3.d. Non-linearities in flux density in the magnetic
gap
4. MAGNETIC MOTOR CONFIGURATION.
- 4.a. Motor topologies, open-circuit verus closed-circuit
designs
- 4.b. Magnetic gap flux density issues
- 4.c.'Magic' pole tips - flux concentrating pole tips
- 4.d. Ribbon Xmax_peak as an arbitrary choice
5. SENSITIVITY
- 5.a. Ribbon air load mass
- 5.b. Mass Fraction Ratio
- 5.c. The importance of flux density
6. METHOD OF ELECTRICAL DRIVE
- 6.a.1. Direct Methods - Voltage
- 6.a.2. Direct Methods - Current
- 6.b. Transformer
- 6.c. Resistor as quasi-current source
Introduction - June 22, 2003.
- 1. The poles
- 2. The supporting structure
- 3. The magnets
- 4. The electrical return
- 5. The ribbon attachments
- 6. The ribbon
Acoustic Line Source Research - Table of Contents.
