Altec 811B Horn + Big Woofer DIY System

Discussion in 'DIY' started by spwath, Jan 8, 2018.

  1. spwath

    spwath Friend

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    Looking at calculations with winISD, it seems it can only get to about 50hrz before a steep rolloff, even with a huge enclosure.
     
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  2. dmckean44

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    You should probably keep looking then.
     
  3. spwath

    spwath Friend

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  4. dmckean44

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    Those cabinets look fun.
     
  5. Cspirou

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    6th order bandpass should increase sensitivity quite a bit, but kills extension into higher frequencies. Usually only seen for live sound reinforcement.
     
  6. spwath

    spwath Friend

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    With the right compression drivers, I only need bass unit to get up to 500hz
     
  7. dmckean44

    dmckean44 Friend

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    You're unlikely to find much of anything that will crossover at 500hz and get out all the way 16khz. And it's notoriously hard to integrate tweeters with these Altec horns.
     
  8. dmckean44

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  9. spwath

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  10. dmckean44

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    Just google "Renkus Heinz SSD 1800-8", it's the first thing to come up.
     
  11. Darren G

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    My father owned a pair of Altec Santiago's for many years, same 811B horn and compression driver as the Valencia, but a different (maybe sealed, I forget) 15" bass driver.

    I'd have taken them except they are monsters size wise. Anyway, stunning sounding horns. I am envious. Enjoy your project.
     
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  12. Darren G

    Darren G Friend

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    Someone I read described this well. Instead of the 'you are there' experience, horns can give you a 'they are here' experience. Some enjoy this, some find it irritating. Room positioning, room reflections, and an AMP that delivers that first watt of power in a pleasant way matter. Horn sound is dynamic, thrilling, engaging, but yes, it can also come across as 'shouting'.
     

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