Subwoofers

An active subwoofer has a built-in amplifier and takes a line-level signal; a passive subwoofer needs a separate power amplifier. The Citronic CASA 178.125UK is the active 15in model with a class D amplifier, and the CASA 178.126UK is its passive 15in counterpart, rated 500W and 8 ohms and fed over Speakon leads.

A 10in or 12in sub for bars, small functions and mobile DJ work, and a 15in or 18in sub for larger rooms, live bands and events where the low end has to carry. The CASA 178.120UK and 178.122UK are 10in and 12in examples, and the 178.125UK and CUBA 178.728UK are 15in and 18in cabinets.

Yes, on many of these cabinets. The Citronic CASA and CUBA subs and the QTX 170.751UK and 170.755UK have a 35mm pole mount socket, so a full-range top speaker can stand on a pole above the sub. The slim CASA-28B can also lie flat to take a pole, or stand upright for a smaller footprint.

Run the mixer output into an active sub, then feed the tops from its outputs. The Citronic CASA 178.122UK has stereo line inputs, a parallel Link output and a pair of line outputs with a switchable high-pass filter for active tops, so the tops are spared the deepest bass. A phase switch helps time-align the sub with the tops.

Yes. The Vanco BPS-65 and BPS-80 are 6.5in and 8in in-room subwoofers with a 200W built-in amplifier, RCA line input and speaker-level input with pass-through. The AV:Link 170.190UK is an 8in active sub with adjustable gain and crossover, and its Auto Off function switches the amplifier off when no signal is detected.

Yes. The Vanco ICS6-MB and ICS8-MB are in-ceiling subwoofers with 6.5in and 8in Kevlar cones in a tuned enclosure behind a paintable, bezel-less magnetic grille. They are 4 ohm units, and Vanco states the enclosure keeps sound from bleeding into other rooms, which matters in flats, hotels and offices.

Yes. The Vanco LS10B-BSC and LS10G-BSC are 10in down-firing landscape subwoofers rated IP65 and designed to withstand sun, wind and rain, with 150W RMS power handling and a 40Hz-300Hz response. They are designed to pair with 4in and 6.5in on-wall or pendant speakers for a complete garden system.

RMS is the continuous power an amplifier or driver handles, and peak or max is the short burst it can take on transients. The active CASA 178.128UK is rated 600W RMS with 2200W peak, and the passive CASA 178.129UK is rated 600W RMS and 1100W max. Compare RMS figures when matching a passive sub to an amplifier.

They are accessories for the Bosch EVID-S10.1D and LB20-SW400 dual 10in subwoofers. The F.01U.344.853 and F.01U.344.854 are 250W transformer input panels, in black and white, and the F.01U.344.855 and F.01U.344.856 are crossover input panels for the same subwoofers, also in black and white. They are not speakers in their own right, so match the panel to the subwoofer already installed.