I've technical background (electronics) and some experience designing and building hifi speakers (my main stereo is based on a 3 way active dipole system, design and built by me). I'm considering to build for myself a small combo to support a bit my double bass with the revolution solo pickup. So far, I've been playing in a trio (no gigs), with guitar and drums, playing in a room which is not big. My target is: Highly portable (guitar, bass, and three guys in a vw bora) Not high spl required. So far I use a 100w hartke combo, volume at 3 most of the times. Pizz only In order to define which the design criteria is, there are some ideas I need to clarify, confirm or rectify, where any kind of support would ve very valuable to me (I'm not stating the ideas below, just thinking out loud for someone else to ban or confirm, or give some light): - BG amps seems to be non linear, but strongly voiced (equalized) - bass cabinets for BG are also non-linear - all this can probably be explaines because the BG doesn't produce that much bass to start with. - specs from the commercially available items are not useful for frequency response because they don't say the limits (-3dB). - there seems to be people who likes linear amplification (alla hi-fi), and also relative small drivers (maybe because they have a more usable radiation pattern) for uncoloured sound (again, alla hifi) - double bass has a relatively good projection, meaning that the bass frequencies reach further than the mids or highs, and double bass has a good amount of bass to start with. The main technical parameters that I need to define are volume, cutoff frequency and roll off slope. I'm assuming that 92dB at 1mt is a reasonable outpout from the combo (headroom not included). Am I far off?