yeah.
i will try and make a box to pg's specs tomorrow or Tuesday and see what happens
Ported Box for 2 10 rsdc
Ok I finally got BassBox semi-working again, but it's not 100% compatible with Vista 64 so there are a few things I can't work out, like vent velocity 
Here's a comparison of the 10 in the .5 SQ sealed box, vs the 10 in the .9 SQ ported box. The orange is sealed, and the red is ported. I have simulated in-car cabin gain with a 12dB/oct rise at 50Hz (the upper of the two response lines).
You can see when we account for cabin gain, the sealed RSDC is designed to play FLAT! Note the big response hump on the ported design... your system would be much louder at around 30Hz than other frequencies. 6dB more than the sealed setup around that frequency.
The ported box is tuned for 27Hz. If we want to apply the same tuning to a 2" port to reduce the chance of chuffing, we would increase the box size to 1cuft, with a port length of 11.5". Their frequency response would be pretty much identical. I can calculate slot ported enclosures as well, if you would prefer to build that.
The boxes seem crazy small, but the RSDC is a crazy woofer! BassBox actually agrees with their recommendations... its box wizard comes up with nearly the exact same thing!
Here's a comparison of the 10 in the .5 SQ sealed box, vs the 10 in the .9 SQ ported box. The orange is sealed, and the red is ported. I have simulated in-car cabin gain with a 12dB/oct rise at 50Hz (the upper of the two response lines).
You can see when we account for cabin gain, the sealed RSDC is designed to play FLAT! Note the big response hump on the ported design... your system would be much louder at around 30Hz than other frequencies. 6dB more than the sealed setup around that frequency.
The ported box is tuned for 27Hz. If we want to apply the same tuning to a 2" port to reduce the chance of chuffing, we would increase the box size to 1cuft, with a port length of 11.5". Their frequency response would be pretty much identical. I can calculate slot ported enclosures as well, if you would prefer to build that.
The boxes seem crazy small, but the RSDC is a crazy woofer! BassBox actually agrees with their recommendations... its box wizard comes up with nearly the exact same thing!
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Last edited by stipud on Mon Mar 01, 2010 11:23 am, edited 1 time in total.
in my first post i was asking about the 10, the 10 box uncertainty scared me so thats why i went with a 12...Bfowler wrote:the box for your 12 actually makes sense though!Pug}{maN wrote:hay i didnt get all this help ! lol....
i was just joke'n though... 
07 red dodge caliber DUB edition, 20" MSR 085 Chrome Rims, 245/35 R20 fusion tires, PHOENIX GOLD RSDC122 12" 1200w COMPETITION SUB, MB Quart DSC2150 Discus Series 2-Channel AMP 600W x 1 rms bridged at 4 Ohms, 4 GAUGE AMP INSTALLATION KIT
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NewOldStock
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NewOldStock
- Posts: 678
- Joined: Sat Nov 21, 2009 10:07 am
- Location: SW Washington
Tom,stipud wrote:Ok I finally got BassBox semi-working again, but it's not 100% compatible with Vista 64 so there are a few things I can't work out, like vent velocity
Here's a comparison of the 10 in the .5 SQ sealed box, vs the 10 in the .9 SQ ported box. The orange is sealed, and the red is ported. I have simulated in-car cabin gain with a 12dB/oct rise at 50Hz (the upper of the two response lines).
You can see when we account for cabin gain, the sealed RSDC is designed to play FLAT! Note the big response hump on the ported design... your system would be much louder at around 30Hz than other frequencies. 6dB more than the sealed setup around that frequency.
The ported box is tuned for 27Hz. If we want to apply the same tuning to a 2" port to reduce the chance of chuffing, we would increase the box size to 1cuft, with a port length of 11.5". Their frequency response would be pretty much identical. I can calculate slot ported enclosures as well, if you would prefer to build that.
The boxes seem crazy small, but the RSDC is a crazy woofer! BassBox actually agrees with their recommendations... its box wizard comes up with nearly the exact same thing!
Glad you didn't tear apart my calculations. I played hell trying to get realistic ported specs for the 10's, the 12's weren't too bad.
I think we've established that "Ka Ka" and "Tukki Tukki" don't work.