Now that the Lowther America website is defunct does anyone know where to find plans for this speaker? I have done a google search and outside of a Scandinavian web site not much detail is out there.
Thanks.
Thanks.
I did not think about the Wayback Machine. From what I just read it's an easy way to get viruses if not careful.
I hope you are successful. I have been running three way speakers plus subs, sound is great for sports and movies. I am lookiing for a more streamline music only solution.
LOB (Larger Open Baffle)
The LOB used the B5 crossover, as the bass from the LOB was similar to the TAO without the boost that the B5 gave. Crossover HP was 2nd order at 150 hz, LP 2nd order at 75 hz, both HP and LP in phase. Sounds like it can't work, but the baffle fills in the rest. See Martin Kings website for the math.
The LOB used the B5 crossover, as the bass from the LOB was similar to the TAO without the boost that the B5 gave. Crossover HP was 2nd order at 150 hz, LP 2nd order at 75 hz, both HP and LP in phase. Sounds like it can't work, but the baffle fills in the rest. See Martin Kings website for the math.
Thanks alot John, I recon that you suggested passive crossover for Altec 416 and Lowther PM6a but I can't find it. Do you still keep it?
btw which one do you suggest between PM6a 16Ohm silver VC vs PM5a standard to be use in LOB? assuming both of them will have equal price
btw which one do you suggest between PM6a 16Ohm silver VC vs PM5a standard to be use in LOB? assuming both of them will have equal price
LOB (Larger Open Baffle)
A passive crossover can easily be calculated using the same slopes and crossover points as the active crossover. MH-Audio and a number of other sites have calculators to do this for you. mh-audio.nl - Crossover Networks
I prefer the PM5A ONLY if it has the 15 ohm copper voice coil. Nelson Pass prefers the PM6A 15 ohm silver voice coil. Take your chances. 5A is a little more detailed, has more tone and warmth.
A passive crossover can easily be calculated using the same slopes and crossover points as the active crossover. MH-Audio and a number of other sites have calculators to do this for you. mh-audio.nl - Crossover Networks
I prefer the PM5A ONLY if it has the 15 ohm copper voice coil. Nelson Pass prefers the PM6A 15 ohm silver voice coil. Take your chances. 5A is a little more detailed, has more tone and warmth.
Hi John,
any advice for using cheap bass guitar to replace tone tubby alnico position? I'm looking at Celestion G12M greennback which i can buy at reasonable price locally.
Thanks
any advice for using cheap bass guitar to replace tone tubby alnico position? I'm looking at Celestion G12M greennback which i can buy at reasonable price locally.
Thanks
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guitar speakers are designed to have a rising response around 2kHz to give the guitar some 'twang'. that may or may not complicate your XO
Jon,
I'm going to give these a go, got the tone tubbys on order. Was wondering what frequency you crossed the tone tubbys and pm6as over at? I'm not up on crossover design and was thinking of using a minidsp and bi amping.
Thanks
I'm going to give these a go, got the tone tubbys on order. Was wondering what frequency you crossed the tone tubbys and pm6as over at? I'm not up on crossover design and was thinking of using a minidsp and bi amping.
Thanks
Smaller OB
The Tone Tubby has different cones available, some of which give that 2 kHz twang. You want the original cone to avoid that. But the crossover is around 110 hz, and a 2 kHz peak should not be much of a problem.
Best,
Jon
The Tone Tubby has different cones available, some of which give that 2 kHz twang. You want the original cone to avoid that. But the crossover is around 110 hz, and a 2 kHz peak should not be much of a problem.
Best,
Jon