Vox T-15 Bass Combo Amplifier - A Look "Under the Hood"

The Vox T-15 was a single channel, solid state bass amplifier with a three band EQ featuring a sweepable mid control. The compact, closed back T-15 enclosure was constructed of MDF (medium density fiberboard ).

The steel chassis was folded into a "C" form with the open part of the chassis facing the rear. The chassis was fastened to the cabinet by six screws, two on the top on the of the cabinet and four on the back.

The T-15 utilized an eight ohm, 8" speaker rated at 20 watts RMS with the model number 200RFB20-5.

15 Watt Power Amplifier Chip
Rather than designing a power amp stage using discrete electronic components, Vox chose to utilize a TDA2030 integrated circuit power amplifier chip for the T-15 bass amp. The chip was mounted to a robust aluminum heat sink mounted inside the chassis. The TDA2030 chip functioned as a complete solid state 15 watt Class AB power amp and included over 40 electronic components. All that was required for operation was a 40 VDC supply, an audio input signal, an inverse feedback loop connection and a ground.


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Photos and editorial content courtesy Gary Hahlbeck, North Coast Music

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