Sealed or Ported?
Posted: Thu Apr 15, 2010 12:02 am
This is a very old photo, but...
I have purchased (and received) four new Goldwood GW-1558 15" woofers to replace the old 15" 'Conn Organ Speakers' made by CTS in 1964.
Here are the numbers for the new woofers: Power handling: 200 watts RMS/380 watts max * Voice coil diameter: 2.5" * Le: .8 mH * Impedance: 8 ohms * Re: 5.27 ohms * Frequency response: 31-2,500 Hz * Magnet weight: 50 oz. * Fs: 31 Hz * SPL: 95.6 dB 2.83W/1m * Vas: 14.19 cu. ft. * Xmax: 3.9mm * Qms: 3.68 * Qes: .76 * Qts: .63 *
Parts-Express recommends a 3 ft3 sealed enclosure. As you can see in the photo, I presently have ported enclosures (these are old Peavey PA cabinets). Do you think I should try them out as-is, or seal the enclosures by gluing some MDF covers over the old ports?
I have purchased (and received) four new Goldwood GW-1558 15" woofers to replace the old 15" 'Conn Organ Speakers' made by CTS in 1964.
Here are the numbers for the new woofers: Power handling: 200 watts RMS/380 watts max * Voice coil diameter: 2.5" * Le: .8 mH * Impedance: 8 ohms * Re: 5.27 ohms * Frequency response: 31-2,500 Hz * Magnet weight: 50 oz. * Fs: 31 Hz * SPL: 95.6 dB 2.83W/1m * Vas: 14.19 cu. ft. * Xmax: 3.9mm * Qms: 3.68 * Qes: .76 * Qts: .63 *
Parts-Express recommends a 3 ft3 sealed enclosure. As you can see in the photo, I presently have ported enclosures (these are old Peavey PA cabinets). Do you think I should try them out as-is, or seal the enclosures by gluing some MDF covers over the old ports?