are the OB speakers need a large speaker ?
i have trial on my OB , used woofer 18 inch for get the vibration wave.
i build with small baffle H 57.5" X W 32" X D 18.5"
The Vintage Fostex speakers:
Horn : Fostex H550 and FD600
MId : Fostex F346 Laboratory Series 12''
Woofer : Fostex FW507 18''
Baffle : 2 piece Upper and lower from MDF and solid wood with steel 10mm
upper : MDF 18mm laminated
Lower : MDF 30mm laminated (18mm +12mm)
LINK : Open Baffle Speakers Fostex FW507 /Woofer 18" + 211 SE amp
YouTube
i have trial on my OB , used woofer 18 inch for get the vibration wave.
i build with small baffle H 57.5" X W 32" X D 18.5"
The Vintage Fostex speakers:
Horn : Fostex H550 and FD600
MId : Fostex F346 Laboratory Series 12''
Woofer : Fostex FW507 18''
Baffle : 2 piece Upper and lower from MDF and solid wood with steel 10mm
upper : MDF 18mm laminated
Lower : MDF 30mm laminated (18mm +12mm)
LINK : Open Baffle Speakers Fostex FW507 /Woofer 18" + 211 SE amp
YouTube