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Dayton Audio SD315-PR 12" Passive Radiator
What is the displacement of these PR's? Do I need to take their displacement into consideration when I build the box they're going in or just build my box the spec and slap them in there?
These will displace so little it will not matter in the total volume of the enclosure.
Date published: 2015-02-11
Will this work with the RSS315HO 12"? I am a little concerned as the xmax is of the passive radiator is less than the subs.
I would not recommend using this for the Reference subs, they will not support the displacement required.
Date published: 2015-02-02
T/S parameters of my old 12" Sub driver: Qts 0.282 Qes 0.305 Qms 3.780 Fs 19hz Res 3.70Ω Ls 2.38mH Lp 3.51mH Rp 2.99Ω Dia 240mm Vas 132l mms 153g cms 460um/N bl 15.4T*m Spl 86.9dB. Will 2 or 3 PR in 3cf cabinet with 500W plate amp works?
I would recommend two passive, with 150 grams added to each. This will tune the enclosure to 27 Hz. A 500 watt plate amp should be plenty, but without knowing the power handling or Xmax of the woofer it is impossible to say.
Date published: 2015-01-19
I have a dayton ultimax 18 in my trunk in a sealed box, the volume is 3.8 cubes total and around 3.3 minus sub and bracing displacement. Would adding 3 of these make the sub sound deeper and bring out the full potential of the ultimax?
Unfortunately no, these passive radiators will not have enough displacement capability to work with a woofer that large. The only passive we have that would be compatible would be the TC Sounds VMP 18", part number 293-684. Although, modeling this setup shows that it is still not a great match, the volume is just too small to add a port or passive radiator with that woofer. You will actually have more extension keeping it sealed, and you will have less excursion issues.
Date published: 2015-01-09
Will 2 of this PR work with my old 12" TC-1000 in a 3 cubic ft sealed enclosure powered by a 500W OAudio plate amplifier, which tune the sub at 25-32Hz. And do I need to add weight to the PR. If yes how much to add to each PR? Thanks.
Unfortunately we have no way of modelling this driver because we do not have parameters for it.
Date published: 2014-12-31
I have a pair of 80's vintage ElectroVoice Interface: A Series IV speakers that require new 12' PR's. Since EV abandoned the home audio market, I can find very little info. Would the SD315's be a good replacement? How do I find out about tuning?
The only way to really be able to confirm the proper tuning frequency is to run an impedance sweep on the speaker and adjust weight until the tuning frequency has been reached. These should work well as replacements, but you may have to tune by ear. There is a good chance they will be pretty similar right out of the box.
Date published: 2014-12-24