In order to get the subwoofer working I would need a crossover filter and a single channel amplifier for the subwoofer. There were a variety of options; buy a dedicated “plate” amplifier which has everything built in, maybe buy a dedicated subwoofer filter and a hi-fi amp from somewhere, perhaps build a kit or even build the electronics myself from a circuit diagram (or schematic).

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After having built my Parker Audio 98 MkII loudspeakers I decided the next project would be to build a really good subwoofer. The decision was made because I am very interested in making some horn speakers to pair with my little valve amp. I know horn speakers are renowned for lacking in deep bass and that any subwoofer would need to be fast enough to keep up with them.

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I finally got my 12 watt amplifier working and I found out the hard way, by burning a nice impression of the top of a heatsink into my finger. I found one track I had not cut, made that cut, powered up the amp and discovered that what was previously cold was suddenly and very painfully burning.

Anyway, at least it works now, I can build the other channel, build an enclosure for it and get started on the next project. It sounded pretty good by the way.

Here’s an update on what I am planning next, and what has been done.

I finished off my Parker Audio 95MkII speakers by veneering them with cherry veneer I purchased on eBay from the US. I think they look great, so do the people who have seen them. They also continue to sound really good.
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“I was totally blown away by just how smooth, detailed, focused and fast they were. When you start hearing new details, new textures in music you have known and loved for years then you KNOW you are onto something good and I was hearing a lot of new stuff with these speakers!”

This is my account of building these loudspeakers which has been a hugely rewarding project. It’s a long post but if you are interested in building them yourself I hope that it may be of some value.
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