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Plus Upgrades for PMC Nearfield Monitors
PMC has significantly improved the performance of its DB1S and TB2S 2-way nearfield monitors with the introduction of the DB1S+ and TB2S+ models, featuring the high quality 27 mm fabric softdome HF unit incorporated in the design of its larger LB, AB, IB and MB2 and BB5 passive mid-field monitor systems. The HF upgrade is accompanied by associated improvements to the crossover design and re-engineering of the acoustic damping in the TB2 model.
These improvements not only improve the acoustic characteristics of the nearfield monitors, providing dramatically lower distortion, better vertical and controlled off-axis dispersion, better stereo imagery and higher power handling capabilities, but also provide the DB1+ and TB2+with the same sonic 'imprint' of the larger mid –field, full range PMC systems, exhibiting similar high signal definition, consistent on/off axis dispersion extended frequency response, and tonal consistency at all volume levels. In effect, providing a 'scalable' signal response from near to mid-field systems.
The incorporation of the PMC soft dome tweeter in the lower cost designs – including the new digitally self powered DB1s-A and TB2S-A models – is made possible by the increasing economies of scale in the manufacture of this extremely high grade device. The twin chamber design, features high performance ferro fluid cooling and provides high reliability, with consistent performance over prolonged usage. Improvement of the crossover circuitry, to accommodate the new tweeter, includes the lowering of the crossover point to 2 from 3 kHz, to provide true second order roll off. This, along with the addition of a drive unit impedance compensation network to the crossover – and in the case of the TB2S+, SOLEN? capacitors – further improves driver integration and power handling. Developments since the launch of the original TB2 design in PMC's acoustic damping foam formulations, used in the design of the transmission line, have been incorporated in the TB2S+; result in a lower distortion, better defined bass response.
12th July 2004
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