Question diy enclosure for existing bookshelf, port or sealed


Standard Member
hi guys, gonna be building some new boxes for my existing bookshelf speakers as i need to make them have as little depth as possible (around 100-120mm)
current box details are:
System type: Two-way, bookshelf/stand-mount
Enclosure type: Reflex
Dimensions: (H x W x D): 365 x 205 x 240mm (14.4 x 8 x 9.4 inches)
Weight: 6kg (13.2 lbs)
Nominal impedance: 8 ohms
Amplifier requirements: 10-100W
Frequency response: 48Hz to 20kHz +/-3.0dB
Sensitivity: 90dB at 1m for 2.83V
System: SP3303
Drive units: B130 bass/midrange unit (SP1434), 25mm tweeter (SP1435)
Crossover network: SP2314

so i can see the existing volume is 12litres, and the speakers port is currently rear firing

basically these speakers are going to be built into a false wall hence the low depth, but the space available does allow me up to 18 litres of volume if that would be better for sealed, or would i be better off building them to the same original volume and face the port forward

ive looked everywhere for the speaker Fs/Qes details etc and can just find no information to allow me to make accurate designs, any thoughts would be much appreciated!

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