ROAR12 testing 
Wednesday, January 10, 2018, 21:48
Posted by Anders
We managed to arrange a quick test and evaluation of the ROAR12 at a local sound contractor, the test was successful and gave us both the opportunity to measure and listen together with professionals.



We got a Digam Powersoft K10 to power the ROAR 12, processing was handled by my own trusty old DBX Driverack 260.

The Top system used for comparison came from Prophon, really nice tops, the warehouse we resided in was 150m2 and the ROAR12 was positioned ~4m from from any wall (as closest distance).



Measurement at 1m was conducted without any processing, i.e. no equalization or filtering before amp.

Raw sweep capture using REW and Umic.

NO SMOOTHING AND SENSITIVITY NOT MATCHED/CALIBRATED.
(ripple in the response shows influences from room acoustics).



WITH SMOOTHING, SENSITIVITY NOT MATCHED/CALIBRATED.



WITH HR SIMULATION OVERLAY, SENSITIVITY NOT MATCHED/CALIBRATED.



Same conditions but with EQ applied, maximum gain at 31Hz was +8dB, at 40 +6dB, 60 +3dB, 70 +1.5dB, note that the response raise is almost 1:1.

This was interesting as the lower tuning knee acc. to simulations is approx. 45Hz, below which EQ'n should not go 1:1 with the response, but it does, this means the design loads the driver far lower then we expected.

EQ APPLIED, NO SMOOTHING AND SENSITIVITY NOT MATCHED/CALIBRATED.
(ripple in the response shows influences from room acoustics).



The maximum power we tested in this case was ~1kW without any HP filtering, LPF was set at 121Hz 48dB/Oct LR, the character was not noticeably changed up to the stated power levels and the driver maximum excursion was estimated to +/- 5mm, xmax for the 12PS100 is 8mm.

The design seems to couple the driver very well, and the smell of heated voice coil was at times noticeable (not unusual with a fresh driver), the design does indeed seem limit more thermally then mechanically (excursion).

A very interesting test and I'm very pleased with the results, the professionals present was indeed impressed with the design, a lot of questions, nodding, and positive statements.

Smoothed response measurements will be added shortly.
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