I'm calculating a speaker enclosure for my Quatour project. However I want to do this in a decent manner. The speakers I'm using are Visaton models, the FR10 4OHM models, and have the following characteristics:
- Nominal impedance (Z): 4Ohm
- Frequency response: 8020000Hz
- Maximum cone displacement: 8mm
- Resonance frequency (fs): 92Hz
- Diameter: 100mm
- Mechanical Q factor (Qms): 2,29
- Electrical Q factor (Qes): 0,7
- Total Q factor (Qts): 0,54
- Equivalent volume (Vas): 2,3l
- Effective piston area (Sd): 50cm²
I concluded that a ported enclosure would be better suited. Using the calculator (from ajdesigner.com) I came to the volume of 6.31 litres for a SC4 alignment. This alignment gave me the flattest frequency response and a reasonable enclosure volume. Indeed it enhances the bass, but only to the 0bD level (exacly what I want). The box should be suitable for all kinds of music, and therefore should have the flattest response possible. Besides SBB4 gave me a value of 3.14 litres, too small and QB3 gave me a value way too large. So far, SC4 is the most adequate alignment.
I double checked this values using the basic car audio electronics website. I need someone too see if anything is wrong, or if I'm choosing the wrong design.
Also, I don't know what SBB4, QB3 or SC4 means in terms of port alignment. Is there any website with examples on port alignments for ported designs?
- Nominal impedance (Z): 4Ohm
- Frequency response: 8020000Hz
- Maximum cone displacement: 8mm
- Resonance frequency (fs): 92Hz
- Diameter: 100mm
- Mechanical Q factor (Qms): 2,29
- Electrical Q factor (Qes): 0,7
- Total Q factor (Qts): 0,54
- Equivalent volume (Vas): 2,3l
- Effective piston area (Sd): 50cm²
I concluded that a ported enclosure would be better suited. Using the calculator (from ajdesigner.com) I came to the volume of 6.31 litres for a SC4 alignment. This alignment gave me the flattest frequency response and a reasonable enclosure volume. Indeed it enhances the bass, but only to the 0bD level (exacly what I want). The box should be suitable for all kinds of music, and therefore should have the flattest response possible. Besides SBB4 gave me a value of 3.14 litres, too small and QB3 gave me a value way too large. So far, SC4 is the most adequate alignment.
I double checked this values using the basic car audio electronics website. I need someone too see if anything is wrong, or if I'm choosing the wrong design.
Also, I don't know what SBB4, QB3 or SC4 means in terms of port alignment. Is there any website with examples on port alignments for ported designs?