- Driver Selection -
The majority of my driver selection decisions on this project
were dictated by my goal to keep the cost as low as possible.
In addition, I knew that I needed a relatively large woofer
to achieve the desired output levels, aesthetic appeal, and
bass requirements. I also kept in mind that I frequently
see questions on the Tech Talk discussion board about
Goldwood speakers, and the lack of information about them.
So, by using them in a project, I hoped to get a better handle
on the capabilities and performance of some of their drivers.
The woofer that was chosen for this project is a buyout
12" Goldwood woofer, the GW-1220/8R. I chose this driver
primarily for its very low cost, and secondarily for it's red
foam surround, which would match my retro design theme
quite well. An alternative to this woofer would be the Pismo
Series 12" woofer, GW-212/8, which will provide slightly
stronger bass thanks to its stronger motor and higher
sensitivity. The crossover design can remain unchanged for
this substitution.
As a midrange, the Goldwood GM-65/8 provided the flattest
frequency response of any of the sealed-back midranges I
tested, and has a healthy power-handling capability. Since
I was using a relatively small midrange, I knew that I did
not need a tweeter that played exceptionally low. In keeping
with the durability theme, the Goldwood GT-1025 piezo
mid/tweeter was chosen for its good top end extension and
relatively flat frequency response. Despite being called a
mid/tweeter, it has a better top-end extension than many
other piezo drivers.
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