Cerwin Vega Mobile Stroker 2000.1 Guts

[riadb]

ok some of you have been waiting for these pics for a while now.

I finally opened up a stroker 2000.1 so here are the internal pics

Stroker 2000.1
2000W RMS @ 14.4V @ 1ohm
benchmarked by PAS magazine @ 2136W RMS @ 14.4V

Class GH Topology.

polished black aluminum finish with red CV striping

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0awg power and 8awg speaker allen key terminals

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Crossover controls, Master/Slave controls, Subsonic/Vega Bass Boost controls.

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Overview of entire circuit board.

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Internal turbine fan mounted on back plate

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One section of the circuit board showing the oversized torroid coils

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Other section of the board showing output mosfets and capacitors.

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Some Info on Class GH amplifier topology -



Class G/H:
Class G/H topology uses a minimum of two +/- rail Power Supplies connected via power diodes.
At low output power levels only +/- VCC1 supplies current to the outputs and VCC2 & VCC3 are disabled.
At medium power Q2 is enabled and VCC2 is switched on (and VCC1 is opened).
When signal reaches VCC2, Q3 starts to supply current, and Q1&2 are in saturation. In this way power dissipation and efficiency are optimized over the power range of voltage on the amplifier.
Advantages
Efficient amplifier which can deliver the same output power with a smaller power supply transformer and a smaller heat-sink.
Disadvantages
Circuit complexity adds cost (expensive multi-tap transformer and multiple output devices).
Crossover distortion similar to Class B switching distortion occurs at each output level transition, when supplies switch from rail to rail. Potentially high THD @ high audio frequencies.
Crossover distortion is not at zero crossing point but also at 1/3 and 3/4 of maximum output signal
Conclusion
Class G/H topology is used in high efficient amplifiers where the cost and distortion are not an object.

[ruffneck_12]

i came