Sims installs a quartet of 25-watt, 16 Ω Celestion G12M Greenback speakers in a vintage 1968 Marshall basketweave cab and explains how to test impedance and polarity for the individual speakers and quad set, the best techniques for mounting speakers to protect their cones, and how to wire the speakers in Marshall's classic series/parallel configuration. He also describes how to break in new speakers after they're installed.
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Part Two:





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Zach loves his Sovtek Mig 60 head, which he plays through a cab he built himself at a pipe-organ shop in Denver. Every glue joint is lined with thin leather for maximum air tightness, and it’s stocked with Celestion G12M Greenback speakers.


































