DCM TF-600 (c. 1992)

Documentation on the DCM TF-600 is thin. One contemporary test report carries most of the surviving record. HI-Fi-Stereo-Buyers (November 1992, p.68) measured the TF-600 and reported excellent phase response, with the tweeter's dispersion singled out as notable.

The review's measurements are the real substance. Impedance ran well above the 8-ohm nominal rating over most of the audio band, peaking at 42 ohms at 60 Hz and 49 ohms at 1,500 Hz. Woofer distortion measured about 1% or less from 80 to 1,200 Hz, then increased to 3% at 2,000 Hz. At the low end it rose to a maximum of 6-9% at 40 Hz. Off-axis treble held up unusually well. At 45° off-axis, output dropped only 2 dB at 13 kHz and 9 dB at 20 kHz. The same report logged response from 650 Hz to 20 kHz.

Beyond that test, nothing else is documented in the sources available: no production years, original price, cabinet details or driver complement.