Yesterday I had the privilege of playing around with 4 BC215’s and 2 TH118L’s from Danley Sound Labs.

First we did a polar thing with 2 of them on a turntable to see what the response would be from them off-axis in 10º steps.

NO SOUND

I received a number of questions after posting the “results” at different angles so here are the screen cap’s on the measurements.

Both the front and back stacks of Fulcrum TS212 are running the standard preset via a Linea 44M20 amp.

Recently I did a little experiment on a gradient / Reversed End Fired Sub Array and took a look at this array under 5º angle steps by turning the whole array via a outline turn table.

Due to iPhone compression no sound ;-)

Below you find the results at the @onaxis 0º mic position and the @180º mic position of the standard version (delay and ø reverse) and a version where I use a extra 3rd order Bessel Low pass filter from a Lake LM26 processor on top of the LR4 low pass filter already present in the linea LM amp i used for this example (on the back sub only). The Subs used are Fulcrum TS212’s (RED OFAX 180º FILTER TRICK PINK ONAX 0º FILTER TRICK YELLOW OFAX 180º DELAY º GREEN ONAX 0º DELAY Ø).

Happy anniversary to all at Rational Acoustics.

https://www.rationalacoustics.com/blogs/news/15for15sale?mc_cid=f1b6bb389f&mc_eid=d4dc4fa9eb

Voor geïnteresseerden in NL geld dit ook voor alleen nieuwe Licenties.

(upgrades komen niet in aanmerking voor de 15% korting. De “subscription” licentie codes kunnen alleen via de website van Rational Acoustics afgesloten worden).

No time to explain but here are the screen captures…..

SMAART I/O ended up displaying a 0.1dB offset to 94dB but was consistent over the full “gain range”. The Evo4 and the UA1010 stayed within level 1 specs AFAIK (i never read those spec but this is from “hear say”).

The screen capture compares the gain tracking available for the Smaart i/o (out of production) and the Audient EVO4

Gain tracking for the Audient EVO4 is currently only available via the Smaart V9 Suite Beta version available via your my.rational account at Rational Acoustics ® (download section) if you purchased Smaart V9 Suite.

Please lower you systems volume because the calibration signal is kinda annoying (except for those who enjoy 1kHz sine waves).

This post is not for hardened professionals…. Just for the new kids on the block starting measuring stuff

For now 2 video’s and some data….More to follow

Started playing around with the cool new SPL features within Smaart V9 Suite.

Enjoy

Might take a while before the HD version is available.

Hi Guys just playing around with the new Smaart V9 Suite…. Enjoy