RCF TT+ Series/TTS28-A High power subwoofer
The TT28-A is a reference double 18” bass reflex subwoofer. Ideal for touring applications. With the digital switching amplifiers, neodymium woofers and a well designed structure, it is one of the smallest and lightest double 18” systems available. A unique feature is the semi charged horn design which at low frequencies around 40Hz operates as a conventional bass reflex cabinet, however at the slightly higher frequencies in the 80 to 100Hz area the system operates as a ‘semi charged horn loaded’ design which provides around 3 to 4dB more efficiency.
Superior woofers
RCF LF18N401: incredibly linear frequency response characteristics, the highest power handling of any comparable 18-inch neodymium transducer, the lower power compression. Fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround. This combination provides remarkable strength and a peak to peak maximum excursion of 48 mm.
A fully optimised T-pole design generate the minimum amount of flux modulation, the unique dual-forced air venting system guarantee a very efficient voice coil ventilation for minimum power compression and higher power handling.
Massive power
On our subwoofers each single transducer is independently driven from a 1 kilowatt RMS amplifier providing an incredible performance and amount of sound power from a very compact size.
Flexible controls
Power amplifiers are driven from a very accurate analog input board: perfect linearity and audio quality, soft peak limiter, rms limiter. Many crossovers and operation options are available: extreme low frequency high pass, phase inversion, 80 Hz and 110 Hz crossover, adding mode crossover for maximum punch of the system.
- 2 x high power full neodymium 18” transducers
- 2000 watt power switching amplifier
Acoustical Specifications
| Frequency Response |
30-110 Hz |
| SPL peak |
139dB |
| Sensitivity (1W/1m) |
- |
| Coverage angle |
- |
| Compression Driver |
- |
| Midrange |
- |
| Woofer |
2x18 |
| Power Handling |
- |
Input Section
| Input signal- Impedance |
bal/unbal |
| Input connector |
xlr |
| Output signal connector |
xlr |
| Input sensitivity |
-2dBu/+4dBu |
| Mic. input sensitivity |
- |
Processor Section
| Crossover frequencies |
80/110Hz |
| Protections |
thermal, hf |
| Sensitivity control |
yes |
| Limiter |
fast limiter |
| High pass |
yes, 40Hz |
| Controls |
80/110/add crossover |
Amplifier
| Nominal power |
Switching 2000Watt |
| High frequencies |
- |
| Mid frequencies |
- |
| Low frequencies |
D/2000Watt |
| Cooling |
convection |
| Connection |
powercon in/out |
Physical Specifications
| Height |
700mm |
| Width |
700mm |
| Depth |
920mm |
| Weight |
73 Kg |
| Cabinet |
baltic birch |
| Hardware |
fittings ready |
| Handles |
6 on side |
| Pole Mount / Cap |
- |
| Colour |
black |
