Hello, wanted to build me a nice doorboard for my new TMTs Should be a closed enclosure of GRP, which I will adapt to my door My question is however only how much volume such a board should have about. Morel Dotech Ovation 6 Here are the technical data: Impedance: 4 Ohm Load capacity (nominence; max. W): 140 / 300 Resonant frequency (fs): 57,0 Hz DC resistance (re): 3,2 Ohm Sound pressure: 90,0 dB (1W/1m) Force factor (F/I): 2,97 N/A Vibration coil inducti vity: 0,20 mH Effective membrane surface: 119 cm2 Moved mass including air load: 10,0 g Equivalent volume (VAS): 15,30 Suspended yield (Cms): 767 Electrical quality (Qes): 1,35 Mechanical quality (Qms): 5,60 Total outdoor quality (Qts: 1,09 Frequency range: 40 – 4000 Hz Air gap height: 4 mm Vibration coil (D; length): 54 mm; 10,5 mm Installation diameter (mm): 141 Installation depth (mm): 60 Music taste is divided into House and Hip Hop if that is important. , but now I want to build up and listen to them first! Well then I hope for nice meaningful answers Greeting Funtiger83