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Author Topic: new speaker  (Read 3160 times)
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Ed Schilling
Hero Member
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« Reply #15 on: August 13, 2019, 08:02:35 PM »

Hey JC, The  NAHS Mark 4:20 Inspired is a dual driver 6 1/2 sealed (Sidney's are single 6 1/2 inch aperiodic with great Heil) using the Great Heil for the top. The xover is 1st order series type (No digital amps need apply!). I added an L pad tonight to The Heil to get an idea of how much to pad it down if any. This is an exceptional speaker and other than the Heil is dirt cheap. It sounds "powerful" at all levels. Maybe I'll actually measure it! Don't count on that  happening anytime soon because i don't care! Compared to The Horns it is on equal footing as much as it pains me to admit it. It's efficient, easy to drive any will play at insane levels.....sounds like my "favorite speaker", eh? Smiley

More as time goes on...........all will be revealed. I have something else in mind that may be "almostas good" and almost free (well, in the high end world).

Jr. Member
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« Reply #16 on: August 13, 2019, 08:31:20 PM »

Thanks Ed,

I honestly have to say you make this hobby alot more fun than it would be without your knowledge, products, and willingness to share.

I have the truth, four of your bucket subs and a crown amp playing great tunes daily

I have both a tube amp (dennis had) and a big beefy sanders magtech solid state waiting to drive whatever you come up with!

Looking forward to hearing more about both new projects.
Jr. Member
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« Reply #17 on: September 23, 2020, 05:53:37 AM »


Sorry for this very late reply. From my experience with Karlson :
- chose whatever K fit your carpentry skill, I mean K12/15 or Karlsonator. I would recommand a driver good for BR.
- calculate the volume enclosure to fit your driver spec , a Karlson enclosure being made of two parts, the calculation should be made for the overall box containing both parts.
- the driver's plate angle isn't critical (by few degrees only), they should point to the listening level
- The vent would be an approximation, you'll adjust its size in the listening room
- they will be placed on the floor or on wheels
- Mine have no absorbant at all but if you use homogeneous material like plain wood, plywood or medium, you would probably have to.

Make it in cardboard first to give you an idea of the building process. Some guys on DIY forum make desktop Ks with foam, easily built they give a good idea of what it is.
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