Turbosound TSB-110 Configurations, Amplifier considerations, Single coil 8 ohm configuration

quick start

TSB-110

TSB–110 CONFIGURATIONS

The TSB-110 is a general purpose band-pass subwoofer designed to add low frequency reinforcement to Turbosound loudspeakers such as the IMPACT50, IMPACT80, TCS-30, TCS-35, TXD-081 and TQ-308.

The TSB-110 utilises a dual voice-coil 10” low frequency driver with two configurable 4 ohm voice coils. In its ‘as shipped’ configuration the two inputs and two outputs are set up so that the bass cabinet can be driven by the left and right channel of a standard two channel (stereo) power amplifier. The input connections are labelled left and right on the spring terminals and are also present at the 1+, 1- (left) and 2+, 2- (right) connections on the Speakon NL4MP socket. Outputs are available through the spring terminals only.

The inputs drive the two voice coils separately via a 150hz low-pass first order filter. The satellite speaker outputs are provided via a high-pass first order filter at 150Hz.

Amplifier considerations

Turbosound speaker enclosures should be driven by high quality power amplifiers designed for true professional use. Such amplifiers will have balanced inputs, DC and RF fault protection, and well designed cooling systems for reliability. Turbosound power amplifiers such as the T-45 and T- 25 are recommended for this purpose.

The program power listed in the loudspeaker’s technical specification is the best guide to the size of amplifier required for general purpose applications. The amplifier should therefore be capable of delivering long term broadband power equal to the loudspeaker’s program power rating at the loudspeaker’s stated nominal impedance. This approach allows sufficient headroom to generate good dynamic range.

In general, the more powerful the amplifier, the better it will sound, provided that it is not driven into sustained clipping. It should be understood that overdriving an insufficiently powered amplifier is more likely to cause loudspeaker damage – the total energy in a heavily clipped signal is far higher than in an unclipped signal – than operating a more powerful amplifier within its ratings.

RECOMMENDED AMPLIFIER POWER RATINGS:

The amplifier's rated r.m.s. continuous power output (20Hz – 20kHz, each

channel) should be 2 x 300 watts at 4 ohms per channel.

Single coil (8 ohm) configuration

The TSB-110 can be configured as a single 8 ohm sub-bass unit if required by effectively patching the two voice coils in series. To do this, remove the connector dish housing the spring terminals by removing the six cross-head fixing screws and lifting it out and away from the cabinet as far as the internal wiring will allow.

TSB-110 quick start guide

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