...I'd like to audition. It's a modified RM30 satellite/subwoofer system like this:
The satellite is called the RM30S, S being for satellite. It's not a small speaker, but has moderately limited bass cutoff, hence the satellite moniker. It's only about 10" to 12" deep vs. the current RM30's 20". The midbass drivers are sealed, f3 is about 70-80 Hz, the sealed box rolling off at 12 dB/octave. Current 6.5's are about 88 dB. The new 6.5s would match the mids' 90.5 dB senstivity (L-pads at maximum level). The system would couple with amps as low as 25W.
A sub is mandatory, could be pre-existing other brand or one offered by VMPS. VMPS would offer a corner-loaded sealed 12" ("CLSS12" for corner-loaded sealed sub 12") available powered or passive (P or S suffix). Corner loading boosts output tremendously, lowers the f3 (frequency & boundary reinforcement are inversely related) & eliminates boundary reflections (primary source output is virtually zero). Sealed enclosures have better transient response vs. reflex. Customers could use one sub or two. The subs could be stacked in one corner or used in two seperate corners. The subwoofer amp would be the one VMPS currently offers with single-band parametric EQ & XO. One amp could drive one or two subs. Powered subs would have a speaker output to daisy chain the amp's speaker outputs to a second passive sub.
Room modes creating troughs between the sub & midbass could be minimized by overlapping the sub-midbass xo. In this case the sub xo pole would be set above the midbass f3.
Positive room modes between the sub & midbass could be minimized thusly (optional feature): Customers would forward to VMPS the modal frequency. VMPS would provide a high-pass passive filter (capacitor bank). The satellite's f3 is moved up to stagger the sub-midbass xo pole frequencies. A flat spot results, roughly approximating a mirror image of the positive room mode.
Of course all the eq could be done with a TacT, Behringer or other eq, but the above scenario would allow even analog lovers to have their cake & eat it to.
