I am currently investigating everything I can on the famous vintage C-15HC woofer from University Sound (somewhere around 1970's), in order to construct the matching enclosure and divulge the results in the vintage electronics community (who are eager to know).
So far, I know this:
Freq. response: 18-800 Hz (catalogue)
Fs: 25.5 Hz (currently trying to measure Q, but found problems)
Ideal Cabinet Volume: around 4.22 cu ft (dimensions are: 26.87H x 19.5W x 17.5D inches, in 3/4 MDF)
Power Handling: 60 watt max.
Nom. Impedance: 2-8 ohms (parallel or series, dual voice-coil)
A bass-reflex configuration is in order. I only don't know what cross-section or port length to use. Anyone could help me here?
So far, I know this:
Freq. response: 18-800 Hz (catalogue)
Fs: 25.5 Hz (currently trying to measure Q, but found problems)
Ideal Cabinet Volume: around 4.22 cu ft (dimensions are: 26.87H x 19.5W x 17.5D inches, in 3/4 MDF)
Power Handling: 60 watt max.
Nom. Impedance: 2-8 ohms (parallel or series, dual voice-coil)
A bass-reflex configuration is in order. I only don't know what cross-section or port length to use. Anyone could help me here?