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(Disclaimer: these are not definitive measurements of performance)
Alright so anyone who followed my "pondering an 18" thread knows I'm messing around with 1.4" exit waveguides. I originally intended to test out the Eminence N314T, but Eminence keeps delaying the release. My original order was swapped by US Speakers at no cost to me for the FaitalPRO HF146. I will compare results of the SEOS 18 1.4" against the 18sound XT1464 waveguides. Tonight I tested the SEOS since it is on loan from Eirch. I should have time to test the 18sound by the end of the week.
This is a very cool looking polymide diaphragm on the FP. This material along with a slightly smaller 2.5" size promises good HF performance.
A pretty serious neo ring magnet
The SEOS 18 is pretty large, much larger then the XT1464
PS4 controller for scale. I'm told this 1.4" throat SEOS has a depth similar to the 24, which is a lot deeper then the 1" 18
Measurements are taken at 1 meter. 1/24 smoothing. On axis looks very good and workable with extension to 16khz. The raggedness above 10khz is likely breakup, but it is so minor and well controlled/dampened that it isn't relevant to me.
Here we have an off axis 0 - 60 (skipped 15 degrees). I really dont have the room to get accurate out further then this. I'm a little surprised by the bunching at 2-6khz at 30-45 degrees? For pattern control this looks good to 500-600hz easily
Testing HD at a normal level of 85db this driver shows 0 strain and could be crossed as low as needed.
But this is a high powered horn setup that will be paired with a beastly woofer so I really need to see what is going on. I really dont like running sweeps this loud in the house but for a few seconds I put my ear protection on and let it rip at 105db sweep. And we can see 2nd order starts to rise below 1.8khz and 3rd order 1.6 khz. I'm not sure what to make of this yet, but right now it looks like crossing at 650hz on the SEOS 18 is out of the question as I'm only getting about 7 db of gain from the horn. I'm not confident the crossover will remove the distortion.
Impedance on SEOS
Alright so anyone who followed my "pondering an 18" thread knows I'm messing around with 1.4" exit waveguides. I originally intended to test out the Eminence N314T, but Eminence keeps delaying the release. My original order was swapped by US Speakers at no cost to me for the FaitalPRO HF146. I will compare results of the SEOS 18 1.4" against the 18sound XT1464 waveguides. Tonight I tested the SEOS since it is on loan from Eirch. I should have time to test the 18sound by the end of the week.
This is a very cool looking polymide diaphragm on the FP. This material along with a slightly smaller 2.5" size promises good HF performance.
A pretty serious neo ring magnet
The SEOS 18 is pretty large, much larger then the XT1464
PS4 controller for scale. I'm told this 1.4" throat SEOS has a depth similar to the 24, which is a lot deeper then the 1" 18
Measurements are taken at 1 meter. 1/24 smoothing. On axis looks very good and workable with extension to 16khz. The raggedness above 10khz is likely breakup, but it is so minor and well controlled/dampened that it isn't relevant to me.
Here we have an off axis 0 - 60 (skipped 15 degrees). I really dont have the room to get accurate out further then this. I'm a little surprised by the bunching at 2-6khz at 30-45 degrees? For pattern control this looks good to 500-600hz easily
Testing HD at a normal level of 85db this driver shows 0 strain and could be crossed as low as needed.
But this is a high powered horn setup that will be paired with a beastly woofer so I really need to see what is going on. I really dont like running sweeps this loud in the house but for a few seconds I put my ear protection on and let it rip at 105db sweep. And we can see 2nd order starts to rise below 1.8khz and 3rd order 1.6 khz. I'm not sure what to make of this yet, but right now it looks like crossing at 650hz on the SEOS 18 is out of the question as I'm only getting about 7 db of gain from the horn. I'm not confident the crossover will remove the distortion.
Impedance on SEOS
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