LiNEOceros

Rick Craig · « **on:** 31 Mar 2014, 03:44 pm »

Two lines of neodymium-driven drivers...

Rick Craig · « **Reply #1 on:** 31 Mar 2014, 04:00 pm »

This is the first straight array using ribbon tweeters that we've applied resistive shading to (thanks to Don Keele for his work in that area). The initial results have been excellent and I look forward to hearing back from our NY customer building the kit.

cazten · « **Reply #2 on:** 31 Mar 2014, 07:13 pm »

Pretty cool.

How does the shading compare to an actual CBT?

Able to share info on the design? Drivers, kit price, general performance specs.

Rick Craig · « **Reply #3 on:** 31 Mar 2014, 08:59 pm »

Quote from: cazten on 31 Mar 2014, 07:13 pm

Pretty cool.

How does the shading compare to an actual CBT?

Able to share info on the design? Drivers, kit price, general performance specs.

The shading is different than a CBT but the principles are the same. Satori 6.5" woofers and Fountek NeoX3.0 tweeters. The sensitivity is 95db and impedance about 3.5 ohms (active/DSP crossover). It's a sealed box which can be crossed over to subwoofers or can be equalized to add bass extension and used full-range without subs. Right now I'm still testing so I don't have any response graphs; however, without any response correction the results have been looking very good. The first kit is being calibrated with a DEQX but I believe a passive crossover option might be viable.

One note on the resistive shading. It has come to my attention that another designer has been trying to scare off potential customers saying that the resistors are a fire hazard. I have had no issues with any of my speakers using shading; in fact, one of the CBT arrays was recently driven with an amplifier capable of over 1,000 watts RMS with zero issues - 2.5x the maximum power I specify for it! It's easy to test this outboard and playing the LiNEOceros really loud produced virtually no temperature change in the resistors - slightly warm to cold at touch. I hope the person behind this will realize that he needs to get all of the facts straight before he starts running his mouth.

JohnR · « **Reply #4 on:** 1 Apr 2014, 10:16 am »

Most speakers have resistors in them...

Anyway, looks pretty cool

Jeff K · « **Reply #5 on:** 1 Apr 2014, 02:22 pm »

Love the name choice. I get a little tired of the soothing low-T model designations in high-end audio.

wnydave · « **Reply #6 on:** 1 Apr 2014, 04:56 pm »

Hi all. I am the proud future owner of these speakers. I decided awhile ago that a line source design would best suit my tastes and my large living room.
After reading alot of positive reviews of Selah Audio, I called Rick and began the process.

My whole system will be getting a make-over in the next few months but for now I have few amplification questions.

Since the sysytem will be digitally crossed (DEQX) there will be four channels of amplification needed. I have an Emotiva XPA-2 (300W x 2) and need to add another two channels. Any reccomendations on if I should add another XPA-2 or some combination of amps?

Rick, I know you are setting the crossover and time/phasing on the DEQX and leaving room correction to me (of course) but how would I compensate for amplifier gain differences? Say, if the tweeters are louder than the woofers in my setup compared to yours.

Dave

Rick Craig · « **Reply #7 on:** 2 Apr 2014, 03:50 pm »

Quote from: wnydave on 1 Apr 2014, 04:56 pm

Hi all. I am the proud future owner of these speakers. I decided awhile ago that a line source design would best suit my tastes and my large living room.
After reading alot of positive reviews of Selah Audio, I called Rick and began the process.

My whole system will be getting a make-over in the next few months but for now I have few amplification questions.

Since the sysytem will be digitally crossed (DEQX) there will be four channels of amplification needed. I have an Emotiva XPA-2 (300W x 2) and need to add another two channels. Any reccomendations on if I should add another XPA-2 or some combination of amps?

Rick, I know you are setting the crossover and time/phasing on the DEQX and leaving room correction to me (of course) but how would I compensate for amplifier gain differences? Say, if the tweeters are louder than the woofers in my setup compared to yours.

Dave

When you run a room curve with the DEQX you can easily see if there is a difference in the gain. If so, the output levels on the DEQX can be adjusted to keep everything equal.

Rick Craig · « **Reply #8 on:** 10 Apr 2014, 02:42 pm »

I did some power testing with the ATI amp. With 225 watts into 4 ohms I had 118db peaks at 1M with no clipping. Next I'll run distortion tests at different levels.

Rick Craig · « **Reply #9 on:** 6 May 2014, 03:17 pm »

I've received some requests for pricing on the Lineoceros kit. The cost is $7,000/pair including shipping to the mainland USA. The kit has everything you'll need except for the cabinets and internal damping material. At this point no passive crossover version is available.

Rick Craig · « **Reply #10 on:** 4 Apr 2016, 02:07 am »

Response curves taken a 1M,2M,3M, and 4M.

G Georgopoulos · « **Reply #11 on:** 4 Apr 2016, 02:14 am »

Quote from: JohnR on 1 Apr 2014, 10:16 am

Most speakers have resistors in them...

Hi JohnR
in my days 80s something, it was very common to correct/flatten sensitivity of drivers for a flat freq.response..

Rick Craig · « **Reply #12 on:** 4 Apr 2016, 02:40 am »

Quote from: G Georgopoulos on 4 Apr 2016, 02:14 am

Hi JohnR
in my days 80s something, it was very common to correct/flatten sensitivity of drivers for a flat freq.response..

?

G Georgopoulos · « **Reply #13 on:** 4 Apr 2016, 03:17 am »

Quote from: Rick Craig on 4 Apr 2016, 02:40 am

?

http://xn--2-umb.com/09/crossover-design-and-simulation

Rick Craig · « **Reply #14 on:** 4 Apr 2016, 03:41 am »

Quote from: G Georgopoulos on 4 Apr 2016, 03:17 am

http://xn--2-umb.com/09/crossover-design-and-simulation

These are ungated measurements with 1/12 octave smoothing in a real room (not an anechoic chamber devoid of reflections). No room correction used with the DEQX either.

G Georgopoulos · « **Reply #15 on:** 4 Apr 2016, 03:47 am »

Quote from: Rick Craig on 4 Apr 2016, 03:41 am

These are ungated measurements with 1/12 octave smoothing in a real room (not an anechoic chamber devoid of reflections). No room correction used with the DEQX either.

you're saying it doesn't work?,well this guy put the resistor in the wrong place and it worked somehow,only shifted the crossover frequency cause he doesn't know what he's doing...

you believed it?...

JohnR · « **Reply #16 on:** 4 Apr 2016, 11:56 am »

Sorry Rick, my remark from two years ago has somehow started this strange little sidetrack. I was pointing out that "most speakers have resistors in them" in response to the claim that the resistors used for shading are a fire hazard.

Rick Craig · « **Reply #17 on:** 4 Apr 2016, 01:49 pm »

Quote from: JohnR on 4 Apr 2016, 11:56 am

Sorry Rick, my remark from two years ago has somehow started this strange little sidetrack. I was pointing out that "most speakers have resistors in them" in response to the claim that the resistors used for shading are a fire hazard.

Thanks for chiming in. Can you point me to that thread?

JohnR · « **Reply #18 on:** 4 Apr 2016, 01:52 pm »

Up on this page - http://www.audiocircle.com/index.php?topic=124899.msg1316657#msg1316657

Rick Craig · « **Reply #19 on:** 4 Apr 2016, 02:16 pm »

Quote from: JohnR on 4 Apr 2016, 01:52 pm

Up on this page - http://www.audiocircle.com/index.php?topic=124899.msg1316657#msg1316657

Ok - thought it was another thread. The reason I'm asking is that I had someone trying to scare off others interested in shaded arrays with claims of a fire hazard. I've had zero problems; in fact, I've been involved with pro sound arrays putting out 120-130db peaks with no resistor failures or fires.