Wednesday, September 1, 2021

Audio: New Outboard Tweeters for My Old Snell Speakers

 I have a pair of Snell Jii speakers, which I bought new in the late 1980s. I now employ them in my bedroom system, powered by a Peachtree Decco 125SKY amplifier. Some years back, I noticed that the tweeters in the Snells were fading a bit, especially at the higher end of their range. So, a few years ago, I bought a pair of Aperion Super Tweeters to sit atop the Snells. The helped brighten things up and added some air at the top end, of course, but they only kick in a 8000 Hz; so they don't cover the lower part of the tweeters' range. The Snells are crossed over at 2300 Hz. So lately I've been looking for some outboard tweeters that extend down to around 2000 Hz and match the 8 Ohm impedance of the Snells. I found a used pair yesterday and ordered them (see photo below). They are Realistic (Radio Shack) 40-1276B tweeters, no longer made but well thought of in the DIY community when they were manufactured. The original owner, from whom I purchased them, had loaded them in enclosures specifically designed for top-mounting on other speakers. They've no crossover of their own, which is fine because they will use the Snell's crossover. I'm really looking forward to hearing what they can do for the sound of my old Snells. I may even keep the Super Tweeters connected with them. My biggest uncertainty is whether I will need to attenuate them at all, given that they are slightly more sensitive than the Snell's own tweeters, which I do not plan to disconnect. Fortunately, I have a bunch of speaker resistors in the basement from when I owned a pair of Magnepan speakers. So, one way or another, I should be able to get the amount of top-end support I'm looking for.

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