Std for its year / model (1993/4) not sure what a Mini 30 looks like inside to say if its sim or not…I know its the same as the 1993 Italian Job and the seats in the 30 look the same so I assume certainly on a G reg 30 they share the same inertia.
The subs went under the back seat 4x 6" proper subs large 13mm x-max top out at 800hz dual voice coils so not like a std 6" speaker so they go nice and low - and being inside rather than in the boot you don’t have to drive them hard and the boom boom does not interfere with the speakers on the parcel shelf or whatever you call it, also there great as they only need 0.25 Cu air space per sub so the under seat option is perfect.
300Watts rms on tap 2ohm load so works well with the rest head unit (JVC) has a filtered sub channel with High/Mid/Low setting to cut off the top end frequency I use on low because it reveals more of the low end.
I bet they have some snap to them, I never liked big slow subs that a lot of people seem to use. More of a mid/low bass type of guy I suppose, the real low stuff doesn’t add as much to the musicality in my opinion.
Nice install, I do hope you have grills or careful passengers.
I’m using Genesis 16 in the rear and 13 upfront in the custom pods powered by a 5 Channel JBL amp.
Its been quite interesting started out with just some fusions in the rear running off the head unit which worked good but you lack left/right separation sounded nice in a balanced way but not pure in a quality way and the 4 subs under the seat powered by a single JBL sub amp.
Then…
Experimented a bit and initially thought I boo boo’d getting the Genesis speakers despite being more up market but its worked well in the end after additional work & sound deadening.
Fronts are quite light weight so are a good mid/treble speaker and gets the detail they have matched some professional Hi-fi speakers I’ve experimented with to gauge the pod build with a known reference point.
Rears are a little lost in the mid band as are all speakers in the rear shelf so they are more a Mid Bass/treble but that helps jell in with the fronts and balances the sound.
The subs under the seat are actually quite cheap but really work well paid £170 inc postage from Germany for all 4 subs tech specs say they go down to 38hz the laptop sound analyser measured lower but that was before sound deadening work so unsure if some of the free air movement was being translated by the car into sound and picked up by the analyser the test tones I set up on a CD seemed to indicate 30hz was audible.
You certainly can tell with easy when the subs are on / off changing the vol on the sub out in the head unit from 0 to 1 really fills in the bottom quite surprisingly… its currently setup so 3 to 4 on the headunit gives a enough boom boom without giving me ear ache.
I really need to get a 100w 20 Ohm resistor then I can measure with a DMM the true enclosure resonance.
Its surprised me what I have so far its a small car not really made with audio in mind but it certainly puts a smile on my face when I crank the volume up.
/edit… As for the Subs should not be an issue not expecting to have anyone sitting in the back but the plan is to have a slottable bar that sits in front enough to stop them being kicked but easily removable.
Mine was a long time ago now but it was great for such a small car that, as you say, is not that friendly to audio.
I had a set of Alpine 7" components in the front with the tweeters in the dash, all worked very well. I never bothered with rear fill as I have never rated it myself. Had a couple of 8" Bazooka tubes in the back (remember them) Tubes where self amplified (can’t remember the RMS) and surprisingly good for the cost. Front’s where running off a V12 amp.
I was more of an SQ man than an SPL head. The sound was great after I had sorted positioning plus the HU had a little bit of time alignment capability.
Kept the Cooper for a few years and then had a 205 1.9 GTI with a major install…the joys of my youth:D
4x 6" proper subs large 13mm x-max top out at 800hz dual voice coils so not like a std 6" speaker so they go nice and low - and being inside rather than in the boot you don’t have to drive them hard and the boom boom does not interfere with the speakers on the parcel shelf or whatever you call it, also there great as they only need 0.25 Cu air space per sub so the under seat option is perfect.