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A subwoofer is for what is in the sound, not how loud it is. Speech and a singer over a piano do not need one; dance tracks, bands with a kick drum and bass, and produced backing tracks do. The TS215S is a 15 inch active sub that sits under our TS210 or TS315 tops and carries everything below about 95 Hz, so the tops stay clean. It hires at £20 per day, on its own or as part of the Full-Range PA Package.
The Alto Professional TS215S is an active subwoofer built around a 15 inch woofer in an internally braced plywood cabinet. Its job is the bottom of the sound: kick drums, bass lines and the low end of produced tracks. Small full-range tops handle voices well but run out of cabinet below about 100 Hz, which is exactly where dance music and band mixes live. Add a sub and the tops stop straining, because the frequencies that work a speaker hardest now have their own box.
Connection is simple. Your mixer feeds the sub's two combo inputs, XLR or 6.35 mm jack, and the sub's two XLR outputs pass the signal on to the tops. A switch on the back chooses whether those outputs carry the full bandwidth or only what sits above the sub's crossover, so the tops can concentrate on the mids and highs. There is a polarity-reverse switch for tidying up the phase against the tops, and an extended low-frequency setting when the room can take a deeper reach. The sub itself covers 35 Hz to 95 Hz and will produce 129 dB at one metre, which is more than any school hall will ask of it.
The cabinet is 542 mm wide, 515 mm deep and 630 mm tall, and weighs 28.2 kg: a two-person lift, and a sack truck if there are stairs. It sits on the floor near the stage, where low frequencies actually benefit from the boundary. A 35 mm socket in the top panel takes a satellite pole, so a TS210 or TS315 top can stand directly over it on a single footprint instead of a separate stand. Power is the supplied IEC lead into an ordinary 230 V socket; the amplifier makes 1250 watts peak and draws no more than 450.
We pair the TS215S with our TS210 and TS315 tops, and it is the sub in our Full-Range PA Package if you would rather book the whole system in one line. One sub is enough for most halls; a dance show in a bigger space usually runs one each side, and if the rig grows we can supply as many as the show needs, bringing more in from trusted suppliers when we have to.
Not every show needs one. Speech, choir concerts and musical theatre with a small acoustic pit usually sound better without a sub loading the room. Tell us what is in your show and we will say honestly whether this box earns its place in the van.
See whether this is free for your dates. This is an indication from our current bookings, not a reservation.
Full-Range PA Package — tops, subs, stands and cabling in one booking, if you are building the whole system rather than adding bass.
| Manufacturer and model | Alto Professional TS215S |
|---|---|
| Series | Truesonic 2 (TS2) |
| Type | Active subwoofer, amplifier built in |
| Low frequency driver | 15 in (381 mm) woofer with 76 mm voice coil |
| Output power | 1250 W peak, 625 W continuous |
| Frequency response | 35–95 Hz (-10 dB) |
| Maximum SPL | 129 dB at 1 m |
| Inputs | 2 x XLR/6.35 mm jack combo, line level (+4 dBu nominal) |
| Outputs | 2 x XLR pass-through, switchable full-range or high-passed for the tops |
| Controls | Volume, polarity-reverse switch, high-pass filter bypass switch, extended low-frequency switch, signal/limit LED, power switch |
| Protection | Electronic clip, thermal and transducer overdrive protection |
| Enclosure | Internally braced plywood cabinet |
| Pole mount | 35 mm socket on the top panel |
| Mains | Standard IEC lead, 220–240 V AC 50/60 Hz (UK 230 V) |
| Power draw | 450 |
| Dimensions | 542 x 515 x 630 (W x D x H) |
| Weight | 28.2 |
It depends what is in the sound, not how loud you want it. Speech, choirs and a singer with a piano are usually better without one. Dance showcases, bands with a kick drum and bass, and produced backing tracks are where a sub earns its keep, because that material contains low frequencies small tops cannot reproduce. Tell us what the show is and we will say honestly whether to add one.
Usually. The sub sits between your mixer and your tops: the mixer feeds the sub, and the sub's XLR outputs feed your speakers, with a switch that takes the low end out of what it passes on so your tops run cleaner. Any active top with an XLR input connects straight in. Tell us what you have and we will confirm before you book.
One is enough for most school and village halls; a dance show in a bigger space usually runs one each side. They sit on the floor near the stage — bass does not need height, and the floor actually helps it along. If the rig grows, we can supply as many as the show needs.
It weighs 28.2 kg and is a little smaller than a washing machine, so plan on two people to lift it and an estate or people carrier with a seat down to move it. Tell us what you are driving and we will say whether it fits, or ask about delivery when you book.
Twelve headworn radio mics, desk, stagebox and floor mics — the musical, mic'd in one hire.
£350 / day
View & check dates
Tops, subs, stands and cabling — a complete PA for bigger halls.
£70 / day
View & check dates
Two speakers, stands and a mixer for classrooms and small halls.
£25 / day
View & check datesSee the rest of our pa system hire stock, or browse everything available to hire.
Tell us the venue, the dates and what the show needs, and we will confirm availability.
Call 0333 404 0621, email sales@1stintheatre.co.uk, or send us the details of your production.
Related: Theatre production · Dance shows · Live events · Venue support · Production toolkit
