Eric_S Posted April 5, 2020 Report Share Posted April 5, 2020 Hi, Recently I bought a 18" 4 ohm Rockville RVW1800P4 (https://www.rockvilleaudio.com/RVW1800P4/) and a 500 watt RMS plate sub amp to pound the floor in my home entertainment system. Looking at it's TS params, it should go in a sealed box. Near as I have been able to figure, it would perform nicely in a 5 to 5.5 cf sealed box but I'd like to get confirmation. Questions are: Where do I start when sizing a sealed box? What frequency should I be tuning for? Thanks for the help! For ref, the rest of the system is all older stuff: Pioneer VSX5700S integrated amp 1 pair Infinity SM120 1 pair Infinity SM80 1 pair Infinity RS1000 1 Infinity SM Video Center Channel 2x Boston Acoustics VR500 10" 125 watt RMS powered sub 250 RMS watt amp driving 4x Bass Shaker AST-2B-4 (series/parallel) Rockville RVW1800P4 TS Params Frequency Response : 20 Hz to 500 Hz Sensitivity : 105dB @ 1w/1m REVC: 3.2 Ohm FO: 31.852 Hz SD: 128.825m M BL: 15: 936 TM QMS: 4.641 QES: 0.390 QTS: 0.360 NO: 3.042% SPLO: 105 dB VAS: 380.079 m M CMS: 161.281 uM/N MMS: 154.805 g MMD: 128.218Kg Driver Displacement 0.25 cf Link to comment Share on other sites More sharing options...
youngvermonter Posted May 5, 2020 Report Share Posted May 5, 2020 The way you tune your box depends entirely on what music you listen to, as well as if you use it for a home theater or just music. Link to comment Share on other sites More sharing options...
CstrokerV Posted May 5, 2020 Report Share Posted May 5, 2020 You don’t tune sealed boxes ... you can somewhat play with freq response by adjusting size of box though my build http://www.stevemeadedesigns.com/board/topic/142505-small-build-log-4-dc-lvl3-10s-tl-update-link-to-rebuild/ http://www.stevemeadedesigns.com/board/topic/154258-rebuild-6-lvl3-12s-update-small-video-nothing-spectacular/ new build http://www.stevemeadedesigns.com/board/topic/188181-03-trailblazer-slow-build-8-dc-lvl3-12-m1-motor-m2-parts/ Link to comment Share on other sites More sharing options...
1point21gigawatts Posted May 6, 2020 Report Share Posted May 6, 2020 On 4/4/2020 at 8:06 PM, Eric_S said: Hi, Recently I bought a 18" 4 ohm Rockville RVW1800P4 (https://www.rockvilleaudio.com/RVW1800P4/) and a 500 watt RMS plate sub amp to pound the floor in my home entertainment system. Looking at it's TS params, it should go in a sealed box. Near as I have been able to figure, it would perform nicely in a 5 to 5.5 cf sealed box but I'd like to get confirmation. Questions are: Where do I start when sizing a sealed box? What frequency should I be tuning for? Thanks for the help! For ref, the rest of the system is all older stuff: Pioneer VSX5700S integrated amp 1 pair Infinity SM120 1 pair Infinity SM80 1 pair Infinity RS1000 1 Infinity SM Video Center Channel 2x Boston Acoustics VR500 10" 125 watt RMS powered sub 250 RMS watt amp driving 4x Bass Shaker AST-2B-4 (series/parallel) Rockville RVW1800P4 TS Params Frequency Response : 20 Hz to 500 Hz Sensitivity : 105dB @ 1w/1m REVC: 3.2 Ohm FO: 31.852 Hz SD: 128.825m M BL: 15: 936 TM QMS: 4.641 QES: 0.390 QTS: 0.360 NO: 3.042% SPLO: 105 dB VAS: 380.079 m M CMS: 161.281 uM/N MMS: 154.805 g MMD: 128.218Kg Driver Displacement 0.25 cf Go by manufacturer recommended enclosure size. It should say in the paperwork that came with the subwoofer and/or on the website. If not, contact the manufacturer by phone or email and ask them the recommended size for an enclosure. And just to clarify, do you plan on running that 18” subwoofer in its own enclosure? “How can we help you?” “And don’t forget to tell them that the customer isn’t always right.” Link to comment Share on other sites More sharing options...
1point21gigawatts Posted May 6, 2020 Report Share Posted May 6, 2020 Hold up, this was posted over a month ago. Wtf? Never mind. OP has already made his decision and is done with this forum and will only come back if he has another question. Lol man I can’t believe I replied to this without checking the date the OP posted it and checked his last visit date. I’m gonna put a dunce cap on and sit in the corner. I will be back in 30 minutes when I’m out of time out. 🤦♂️ “How can we help you?” “And don’t forget to tell them that the customer isn’t always right.” Link to comment Share on other sites More sharing options...
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