I now notice that they now offer an RLC filter to tame the Lowther shout.
I would be curious making this with Fostexes but alas no workspace here in HK where I currently live.
I would be curious making this with Fostexes but alas no workspace here in HK where I currently live.
No filter? I have only heard flattish on axis response from Lowthers with a front horn. The top of the range Lowthers in the past (eg TP1) had front loading. 40Hz bass. Hmm. I have heard a Voigt Domestic Corner Horn which seemed to manage it. But I have never heard any other design that could.
Depends on the Lowther. They do have a couple that are relatively flat compared to the rest -both are silver coil units as I recall. The others generally need compound or indirect loading if run without an electrical or mechanical filter.
Translation.
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planet10-hifi
dave
planet10-hifi
dave
Have you any experience or reports of how these enclosures work with the plain (non-silver) 8 ohm PM6A?
Looks like this one may be even more versatile. I will have to chack the detail of the existing boxes, this driver looks to work from 40 (the larger of the 2 designs existing so far IIRC), all the way up to 80 litres. 40-60 looks close to optimal.
A tweaked design would need to be done, that should not be to difficult, you would just have to decide how big you can live with (larger one would likely just be taller). That could be done within the scope of the existing plans and you add that specific design to the planset.
dave
A tweaked design would need to be done, that should not be to difficult, you would just have to decide how big you can live with (larger one would likely just be taller). That could be done within the scope of the existing plans and you add that specific design to the planset.
dave
This is fully true. But I want to add that the Ancients were better at guessing than we are. When we simulate older designs with our modern understanding and software (I am a hornresp fan myself) some are excellent at what they clearly aimed for. Little warts can be fixed with our simulations/modelling. I used the Olson corner horn as a starting point for my own most recent design. Its simulated response was good from the start, I mainly made it easier to build (BiB like) but managed to refine its reponse somewhat. They didn't have our computing power available, but they understood the physics.
I am working on a variant of the Voigt Home Constructor's Horn, for my Fane 15 inch fullrange drivers. It will be somewhat larger and follow a 50 Hz Tractrix curve. Response in-room shows plenty of bass extension in simulations. I hope the excess treble makes it out of the horn, considering its two bends.
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Sometimes. The ones we usually here are about are the ones that have survived time, and often done by the engineers who designed the loudspeaker unit.
We certainly stand of the shoulders of the Ancients, and little we do is all that new, advances are mostly in better materials, parts, quality control (i’ll ignore the crap), and in particular simulation software that lets us try many things virtually before committing to wood (if that is what you are building out of).
One cannot discount the much greater sharing of knowledge and experience from places like this forum.
dave