PhotographyHifi loudspeaker cabinets
A long time ago I did some hifi projects. These "Scala" speakers (left) were built from a ready-made plan. They used to be in a very large living room. We moved in June, 2004, and unfortunately, the cabinets didn't fit well into the interior. Besides, when our cat Jezebel was still a kitten, she did some damage to them and they need to be fixed anyway. Their working principle is called transmission line, the baffle configuration is M-T-M (mid-tweet-mid), they're 90 cm high. Bass from these speakers is very subdued, but extremely deep. Because of the M-T-M config, they have a pretty good radiation pattern, meaning the mids are very clear and focused from various listening angles, and never fuzzy or nasal, although 
I've never really driven them hard to do a quality listening test at high volume. The woofers are made by Monacor, type Monarch SPH-135/AD. They feature carbon reinforced polymere cones and what appears to be silicone surrounds. The tweeters are also made by Monacor, type Monarch DT-105TI. They have titanium domes, and sound very fresh and bright. The Scalas used to be powered by a Sony TA-FE320R, which in turn is hooked up to a Sony CDP-CX55, a 50-way CD-changer. Very common stereo equipment. I never cared much for top-of-the-market amplifiers or CD-players, because my knowledge of speakers tells me the speakers are always the weakest link in the whole chain. Some will disagree with me, but that's how I see it.
To the right is another speaker called "logo". Initially built form a plan, but heavily modified later. I used to have these small 28 cm bookshelf speakers for a long time in my bedroom back in my parents' house. Then they served as monitor speakers for my computer for a while, to be replaced by Behringer B2031 active monitors. And now, they're in our living room. The 4" woofers are Visaton W100S midbass drivers, the tweeters are Monarch DT-106 soft domes. I've grown to dislike them. They sound cold and brittle, probably due to a sensitivity mismatch between midbass driver and tweeter and/or a badly configured crossover. All my own fault, I know. Plans have been made to replace them.
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