lukeamdman

Somehow most of the links in the first post were broken again but they should be fixed now.

Just the Othorns and the SP 12k I'm powering them with.

Mint condition, never a single hiccup. $2,500 shipped. I'll supply whatever power cord you need. Right now it's a L6-30P (250v 30A twist lock).

$3k for the pair. I won't ship these but I will drive a few hours from 55337 to deliver them. I have no desire to sell these, and never thought I would, but life happens https://www.avsforum.com/forum/155-diy-speakers-subs/1475195-dual-othorn-build.html

Oh boy!

In other amplifier news, SpeakerPower is under new management since Brian has retired. Retail prices appear to have increased as well. http://www.speakerpower.net/about-us.html "CEO's Message Welcome, I am Justin Ryan, CEO of SpeakerPower. In 2018, I acquired SpeakerPower from its founder, Brian Oppegaard, upon his retirement. I am very excited to continue the growth and development of SpeakerPower. As an experienced executive in a variety of industries, and an MIT trained engineer, I know what it takes to develop exciting new products that satisfy the most demanding requirements of customers for their cutting edge products. With further investment in new products, I plan to build on SpeakerPower's 16 year track record of delivering high quality, powerful, efficient, and intelligent amplifiers. For OEM manufacturers in Professional and Home Theater markets, SpeakerPower provides the opportunity to have next-generation intelligent amplifiers in your self-powered loudspeaker line. Our complete turn-key approach means that it is as easy for you to install a SpeakerPower amplifier in your cabinet as a woofer, horn or compression driver. With our proven designs, you will be up and running quickly with minimal up-front investment. And our state-of-the-art digital signal processing and power technology will reinforce your image as a technological leader. With designs from 200 to 12,000 watts, we can meet your most critical needs. Users of SpeakerPower amplifiers enjoy high power and high efficiency, with intelligence designed to ensure continuous output in the most demanding applications. Our products are manufactured and supported right here in California. Our commitment to quality, technological acuity, and steadfast product support means your loudspeakers are powered with confidence. See what we can do for you today. Justin Ryan CEO"

Add 4 more Terraforms to what you have now.

When pennynike1 had (2) Othorns + (4) Terraforms I measured 135db in his room, so +12db going from 2 Othorns to 8. I've hit 148db RMS and 154db peak in my room at the LP and I still haven't clipped the three SP2-12k amps.

^^^ Yep Glop a bunch of pl premium in there and you'll be fine.

I remember audio snobs singing the praises of a REL sub and how "accurate" it was. When put on the bench it was basically a distortion output machine.

I have more 12k's but I still drool over those K20s!

Excursion is at about 3/4"

Here's curtain shaker at 126db. The cone excursion is highest (about 1/4") during the 10hz portion at 114db.

Ported cabs and the horns are playing nicely