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Author Topic: Beater Sub  (Read 13975 times)

Silas Pradetto

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Re: Beater Sub
« Reply #30 on: October 25, 2010, 12:19:49 pm »

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Silas Pradetto

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Re: Beater Sub
« Reply #31 on: October 25, 2010, 12:22:51 pm »

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Silas Pradetto

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Re: Beater Sub
« Reply #32 on: October 25, 2010, 12:25:13 pm »

I recommend a pair of Definimax tuned to 46Hz. This gives the lowest F3 of any combination.

Frequency and predicted F3:

43 50.67
44 50.82
45 51.02
46 42.22
47 42.6
48 43.01
49 43.45
50 43.9

Not sure why F3 drops so rapidly after hitting 46Hz...but it looks good on paper, anyway.

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Duane Silveira

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Re: Beater Sub
« Reply #33 on: October 26, 2010, 10:13:09 am »

Silas, what does the Omega pro18a look like modelled in that same cab?
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Silas Pradetto

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Re: Beater Sub
« Reply #34 on: October 26, 2010, 10:30:49 am »

Duane Silveira wrote on Tue, 26 October 2010 10:13

Silas, what does the Omega pro18a look like modelled in that same cab?


You're killing me Laughing

I'll see if I have time to plot it today. Any graphs in particular you want to see? I know the Omega drivers are low Xmax.
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Duane Silveira

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Re: Beater Sub
« Reply #35 on: October 26, 2010, 08:55:06 pm »

My cabs are darn near exactly the same dimensions, i tuned mine to 40hz and dropped in the Omegas. Im happy with the performance, i realize im prob running out of xmax fairly early in relation to the thermal max. Nonetheless it would be nice to see the same plots compared to the deltas and the Sigmas.
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Silas Pradetto

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Re: Beater Sub
« Reply #36 on: October 27, 2010, 10:36:17 am »

Merry Christmas. The Omega looks very nice in that box.

Unfortunately, at that power, the Omega is about DOUBLE Xmax, so it's not going to sound too good.

I had to bring power into the pair of woofers down to 400W to stay within Xmax.

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Silas Pradetto

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Re: Beater Sub
« Reply #37 on: October 27, 2010, 10:37:52 am »

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Paul O'Brien

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Re: Beater Sub
« Reply #38 on: October 27, 2010, 11:16:46 am »

The Lowriders produce an F3 of 35hz with a single 4.5" x 20" x 5.25" deep slot port between them(I don't know if there's room for that). I calculate internal volume is about 14.5 cu ft after subtracting the port and driver displacement. 1600w puts them just 1mm over Xmax at 55hz in this configuration and output is over 131db(calculated) from 50hz up. For the cost of these drivers that's outstanding performance.

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Paul O

Paul O'Brien

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Re: Beater Sub
« Reply #39 on: October 27, 2010, 11:19:12 am »

Here's the excursion plot at 1600w with the addition of a 2nd order highpass filter at 30hz.

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Paul O
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