Rewind and repeat

摘要

Way back in the 1970s I was working as a patent agent and the club rules of the profession obliged me to write about my hi-fi hobby under the pen name Adrian Hope. I wrote a feature for the June 1971 issue of HFN on how to turn concrete sewer pipes into speakers. I'd spent months tuning the ports with long-hair wool and comparing the live sound of my acoustic double-bass, with Reslo rjbbon mic recordings played through the pipes. The pipes only went to the garden, to become a home for hedgehogs and tortoises, when I could afford a pair of Spendor BC1s. With some of the same wool inside, they sounded as good as the pipes in the bass and far better and more directional in the mid and top.