lanman31337 Posted July 9, 2009 Report Share Posted July 9, 2009 Its probly better that you don't know!There isn't any reason to manipulate a manufactures speaker. Adding mass means to glue stuff to the cone to make it heavier and can also damage a woofer very quickly if you don't know what you are doing. Absofrigginlutely. *cues passive radiators* Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
Forevrbumpn Posted July 9, 2009 Report Share Posted July 9, 2009 The added mass part is helpful, so is cms, and Bl I have a 18" VERY low freq woofer I made myself. I have a heavy copper coil, a dual 2ohm, 2" winding width that was pretty heavy, 2 to 3 times what a aluminum coil would weigh Along with that, I did 1-single 9" spider that is very soft, and the cone I used was a standard heavy weight, rigid cone used on the common SPL driver cone, yet the surround is very very soft. What I got was a woofer that ended up with a 13hz Fs, and a 65 tm BL factor, and was small box friendly So, in a 1.5cf sealed box I have this 18" pounding away, with the same freq response as maybe 2- 15s in a much larger sealed box Its still trips me out when I touch the cone, and with such a light touch, the cone moves up and down hehe Quote I have a ritual called "terminator". I crouch in the shower in the "naked terminator" pose. With eyes closed I crouch for a minute and visualize either Arnie or the guy from the 2nd movie. I then start to hum the T2 theme. Slowly I rise to a standing position and open my eyes. It helps me get through my day. The only problem is if the shower curtain sticks to my terminator leg. It sorta ruins the fantasy. Link to comment Share on other sites More sharing options...
lanman31337 Posted July 9, 2009 Report Share Posted July 9, 2009 That is a beautiful thing For those who don't know, passive radiators change the tune lower the more weight is put on. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
ISO Posted July 9, 2009 Report Share Posted July 9, 2009 That is a beautiful thing For those who don't know, passive radiators change the tune lower the more weight is put on. Yep and no voice coil to screw up on the passive radiator. Quote Isobaric - Refers to the practice of coupling two drivers together to make them act as one. "Giving up doesn't always mean you are weak; sometimes it means that you are strong enough to let go." Insanity: doing the same thing over and over again and expecting different results. The Destruction of a person builds character. Link to comment Share on other sites More sharing options...
lanman31337 Posted July 10, 2009 Report Share Posted July 10, 2009 And minimal displacement of the radiator. The only setback is you'll have to have a face somewhere to mount said radiator. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
Basshead08 Posted July 10, 2009 Author Report Share Posted July 10, 2009 tHIS IS ALL NEW TO ME. i have never messed with radiators. Do they wire up to the sub? How much do they cost? Is this a normal thing in the car audio world and I just missed the bus? Quote System tear out has begun...Out with the old i have a iq of 128 i graduated at the top of my class tell me how im reatrded you are the 1 thats dumb as hell you can't even spell Look at the underlined text hahahahahahahaha I think of it as the virgin losing the virginity technique not just jumping in to it, and pounding away, but going at it slowly over time, to get to that full extreme Link to comment Share on other sites More sharing options...
ISO Posted July 10, 2009 Report Share Posted July 10, 2009 tHIS IS ALL NEW TO ME. i have never messed with radiators. Do they wire up to the sub? How much do they cost? Is this a normal thing in the car audio world and I just missed the bus? One way to look at a passive radiator setup is kind of like looking at a box that has 2 10 inch subs in a shared airspace BUT sub number 2 would have no magnet and no power hooked up to it. Just a cone that is working off of what subwoofer number 1 is doing and sub number 1 of course has a magnet and power to it. So when sub #1 pushes out, sub #2(the passive radiator) would suck in and when sub number 1 sucks in it would be pushing the cone out on sub #2(the passive radiator) and this is were I hope the other guy jumps in because I can't think of the rite words but the 2 cones work in conjunction with each other and can cause positive or negative results but the overall goal should be lower frequency response as more air should be moveing inside the enclosure. This is not 100% accurate but pretty close to how it works. Quote Isobaric - Refers to the practice of coupling two drivers together to make them act as one. "Giving up doesn't always mean you are weak; sometimes it means that you are strong enough to let go." Insanity: doing the same thing over and over again and expecting different results. The Destruction of a person builds character. Link to comment Share on other sites More sharing options...
lanman31337 Posted July 10, 2009 Report Share Posted July 10, 2009 That is correct. A radiator is usually a cone and some sort of basket without coils or magnet. There's a shaft sticking out of the back of the cone to bolt weights on. The more the weight, the lower the frequency. It'll act like a ported box since the radiator(s) would determine the enclosure tuning. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
Basshead08 Posted July 10, 2009 Author Report Share Posted July 10, 2009 Is this something that is done very often because I've been on here absorbing all the info I can for 6 months now and have never seen it done. I don't think..... Quote System tear out has begun...Out with the old i have a iq of 128 i graduated at the top of my class tell me how im reatrded you are the 1 thats dumb as hell you can't even spell Look at the underlined text hahahahahahahaha I think of it as the virgin losing the virginity technique not just jumping in to it, and pounding away, but going at it slowly over time, to get to that full extreme Link to comment Share on other sites More sharing options...
ISO Posted July 10, 2009 Report Share Posted July 10, 2009 Hear you go man some reading materail: 1st the almighty Wiki: http://en.wikipedia.org/wiki/Passive_radiator_(speaker) 2nd is from a guy useing a Peerless subwoofer and a Peerless Passive radiator. I haven't even got to use Peerless yet put its a company I have been checking for acouple of years. Scroll down to V. pictures to see some very nice passive radiators. FYI V=5 http://www.geocities.com/adrian_mack/ and http://www.hardwareanalysis.com/content/ar...inch-subwoofer/ 3rd example and 2 of the pros on this forum have used these and been satisfied is an example of a up to date product that is manufactured and sold now. Its the Kicker ikick 500 and I'm sending you to crutchfield for this one because of the pics they have. On the back you will see what looks like a Solo-Baric L7 in the back, well wrong that is a passive radiator too and I guess it sounds great from what I have read. This is an example of 2 5 inch speakers used with a 6 inch square passive radaitor that is on the back. The pics: http://www.crutchfield.com/App/Product/Ite...IK500&tp=44 The explanation: http://www.crutchfield.com/p_20608IK500/Ki...K500.html?tp=44 I hope this gives you a better understanding of a passive radaitor and its functions. LOL just remember the cool thing about what we do is that everything is almost limitless as far as possibilities go. So even after 14 years till the day I die I will always be a noob at something in this field and there will always be something new to learn. Maybe thats why I love this hobby so much. Have fun! Quote Isobaric - Refers to the practice of coupling two drivers together to make them act as one. "Giving up doesn't always mean you are weak; sometimes it means that you are strong enough to let go." Insanity: doing the same thing over and over again and expecting different results. The Destruction of a person builds character. Link to comment Share on other sites More sharing options...
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