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Gold Member Username: InsearchofbassPost Number: 3738 Registered: Jun-04 | I put a pair of those pyramid 6.5 pro plus speakers in my abc box and they sounded very promising looks like the 10 dollar investment for four of them off of my buddy is going to pay off the intresting thing is the fs of the 6.5's is 60 hz and they seem to play fine below that ill need further testing to confirm that but so far looks like my guess that the abc box can be used to go below a speakers fs can be used if set up correctly |
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Silver Member Username: Comp98Philadelphia, PA USA Post Number: 165 Registered: Sep-05 | Wow...I didn't laugh at all. I just wasted 30 seconds of my life and didn't even get a laugh. |
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Gold Member Username: InsearchofbassPost Number: 3739 Registered: Jun-04 | ok fine no sense of humor i guess...im also sharing to show the promise of my discovery so others can look into it |
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Gold Member Username: RovinTrinidad & T... Post Number: 2623 Registered: Jul-05 | So many ppl on this forum are so quick to diss cheap speakers cause everybody only knows about the good brand names - but if u are near broke ,nothing is wrong with cheap speakers/subs . I still have some cheaps 1s from back when i was now experimenting with music - obviously , 2day i will not advise anybody to go buy very cheap stuff .... |
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Bronze Member Username: Graphix1Santa Rosa Heights, Arima Trinidad & T... Post Number: 64 Registered: Oct-05 | Whats A abc Box |
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Gold Member Username: InsearchofbassPost Number: 3740 Registered: Jun-04 | correction the fs is 67 hz an even more intresting fact considering i was playing below fs |
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Gold Member Username: InsearchofbassPost Number: 3741 Registered: Jun-04 | one sec nester ill get you a link on them your right superfly ill put it this way the only way you make a discovery is to try something new ....sometimes even against what you think you know to be true in theory ....doing it cheap keeps the cost down and the potential loses low if you blow the speaker while making for a head scratching success story |
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Gold Member Username: InsearchofbassPost Number: 3742 Registered: Jun-04 | nester I cant find the site I was looking for but heres a good one to start copy and paste the link in a new window and it will work |
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Bronze Member Username: Graphix1Santa Rosa Heights, Arima Trinidad & T... Post Number: 65 Registered: Oct-05 | Cool |
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Gold Member Username: RovinTrinidad & T... Post Number: 2630 Registered: Jul-05 | NE$TER - Ay , i eh hearing U ! https://www.ecoustics.com/electronics/forum/car-audio/175944.html ......... |
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Bronze Member Username: Graphix1Santa Rosa Heights, Arima Trinidad & T... Post Number: 66 Registered: Oct-05 | i de,ah see u real glad fe we fitball squad boy |
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Silver Member Username: Nutty91rsBloomington, Indiana USA Post Number: 179 Registered: Oct-05 | The Kenwood "tornado" cone subwoofers have a very high FS so you're actually playing below it the entire time; I believe it's something like 160hz. Kenwood did this purposely to try and prevent big spikes in the actual range the subs most often play in. I'd like to see some pics of these subs and your setup, maybe something to go in the bragging area? |
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Gold Member Username: AraknidBOCA , FL U.S. Post Number: 1123 Registered: Nov-04 | Im not sure if that post had anything to do with this thread but NO WAY the Fs is that high. |
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Silver Member Username: Nutty91rsBloomington, Indiana USA Post Number: 191 Registered: Oct-05 | Mike you're right, the Fs is 35hz on the newer Kenwoods. The cone resonance is what is high, 170hz. This is a quote from Kenwoods web site. Never understood how the subs worked with that high of an FS but now I understand what they're saying. "The newly developed "Tornado Type" diaphragm not only blows you away with the impact of its radical new design but also effectively improves the strength of the diaphragm itself. Its high rigidity enables the woofer to reproduce stable bass sound without distortion even for input of high-power signal. Unlike conventional diaphragms with resonance of about 100 Hz which may affect the bass sound, the "Tornado Type" diaphragm's resonance frequency is set at about 170 Hz - far beyond the usable bass frequency range. The result is an improved power linearity as well as powerful and tight bass sound with minimized resonance." |
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Gold Member Username: InsearchofbassPost Number: 3745 Registered: Jun-04 | illl be sure to keep the board posted on progress of my experiment |
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Gold Member Username: InvainMichigan United States Post Number: 4081 Registered: Aug-04 | " the intresting thing is the fs of the 6.5's is 60 hz and they seem to play fine below that ill need further testing to confirm that but so far looks like my guess that the abc box can be used to go below a speakers fs can be used if set up correctly" Sean, your tests are great and all, but you do realize that when a sub reaches it's fs it doesn't just hit a brick wall. Fs is the driver's resonant frequency in free air, where the impedence peaks; not the lowest frequency it can play. - Not trying to question your knowledge at all, just wanted to make sure new people don't misunderstand what your saying and believe it's impossible to play below the fs. |
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Gold Member Username: InsearchofbassPost Number: 3748 Registered: Jun-04 | "Sean, your tests are great and all, but you do realize that when a sub reaches it's fs it doesn't just hit a brick wall. Fs is the driver's resonant frequency in free air, where the impedence peaks; not the lowest frequency it can play." Actually thanks Joe smoe I was thinking that was the lowest it could play but the reason why was that I was forgetting the definition of the word fs. Im glad you corrected me and reminded me of the facts. We all forget important details from time to time sometimes from what were told by others. Heres a case where remembering that kind of stuff made a person forget the true facts. Sorry peeps but Im very glad for Joes correction but he is 100% correct. Knowledge is Power |
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Gold Member Username: InsearchofbassPost Number: 3749 Registered: Jun-04 | by the way joe I was thinking about how the abc box limits driver excursion by half in that first port tuned chamber do you think a third chamber would further reduce excursion amounts again? So that I could play well below a speakers usual frequency limits. |