Charlie's Ripole Subs

[soundnovice]

http://www.pioneerelectronics.com/S...r/TS-W304R_InstallationInstructions083111.pdf

TS-W304R. driver has 95dB sens. how much SPL i will be losing here if I have two of these drivers in a ripole? is there any calculation for this.

 

[Face]

Just like JBL'S specifications, efficiency is greatly exaggerated.

In a Ripole, I believe that you will lose @ 6db of efficiency.

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[soundnovice]

if i understand correctly after losing 6dB,since two drivers are there in phase, i will get 3dB more....right? so effectively i will get 93db!?

 

[kees52]

You're not going to find a woofer with that high of a sensitivity with those specs.

The best budget woofer I've found is the JBL GT5-15.

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Nature is not forgiving, otherwise we are much more advanced.

 

[Manolo47]

Eq. necessary w/ 80 hz low pas filter?

using a Crown xls 1000 amp. set at a low pass filter at 50 to 100 hz with a 24 db slope. Would any equalization be needed? Thanks.

 

[croat47]

Any opinion or practical implementation in a ripole of the Dayton RSS265HF-8 (10", 8 ohm)?

Fs = 25 Hz
Qts = .49
Xmax = 14.3mm

Or is the Fs too low?

What about the RS180-4 (7", 4 ohm)
Fs = 38 Hz
Qts = .50
Xmax = 6.0mm

Fs and Qts seem good...but too low Xmax? Small room, low volume.

 

[OllBoll]

Any opinion or practical implementation in a ripole of the Dayton RSS265HF-8 (10", 8 ohm)?

Fs = 25 Hz
Qts = .49
Xmax = 14.3mm

Or is the Fs too low?

What about the RS180-4 (7", 4 ohm)
Fs = 38 Hz
Qts = .50
Xmax = 6.0mm

Fs and Qts seem good...but too low Xmax? Small room, low volume.

You need ~ 6.8 RS180 drivers to move the same amount of air as a single RSS265HF so I'd steer towards the bigger driver.

 

[croat47]

Forgot about that, thanks.

What is the best way to model these things? HornResp? MJK Sheets?

 

[Face]

These work well and they're cheap. https://www.amazon.com/JBL-GT5-15-15-Inch-Single-Voice-Coil-Subwoofer/dp/B003KN2TMG
I can post some measurements later.

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