Are these enclosure calculations even close? lol
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 480 Registered: Sep-04 | okay these are exterior dimensions of the box... 30 inch width 18 inch height 15 inch depth 4.6875cuft so the port will be 3.5 inches wide and 16.5 inches tall.... and have a port length of 49.62 inches...... will that give me a 24 hz tune? im confusied i just know i want a box perfect for an ava 15 iwth a JL1000/1 and a 24hz tune lol |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 481 Registered: Sep-04 |  |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 482 Registered: Sep-04 | thats i believe a 50 inch port length it get so confused when doing this stuff sorry lol |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 483 Registered: Sep-04 | okay now i got 49.5 inch port length...grrr |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 484 Registered: Sep-04 | can a port even work like that lol i think so... and i want to coat the whole interior and exterior of the box in resin like the guy did on that site showing about the 2 chamber abc box for the 6.5s... and also i want to round the port corners with pvc and resin like he did also... i hope im not in over my head |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 485 Registered: Sep-04 | oh and where should the sub be placed??? should it plit the distance between the end of the port and where the port begins...like this...  |
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Silver Member Username: AlpineuserWinchester, TN Post Number: 415 Registered: Mar-05 | use this program http://www.accelerator-pedal.com/l-ported-box.htm |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 486 Registered: Sep-04 | i have... ive also been using another program... but the one u told me to use.. when i use it i calculate the volume myself and i always get a significantly highernumber than the program does |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 487 Registered: Sep-04 | wether i do internal or external.... and what does net mean... does that mean subtracting displacement, walls and ports? |
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Silver Member Username: AlpineuserWinchester, TN Post Number: 416 Registered: Mar-05 | when u count the volume dont count the port volume just the internals of the box |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 489 Registered: Sep-04 | oh man i did not know that... i feel like an idiot.... so dont count this gray area....  |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 490 Registered: Sep-04 | thats like half the volume lol |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 499 Registered: Sep-04 | okay ... or tell me if this enclosure would work well with a 15 avalanche and a JL 1000/1... go to http://www.accelerator-pedal.com/l-ported-box.htm for net volume put 4.6875 24Hz tuning frequency i put .18 for displacement i dont really know box width 40. box height 18 im realy not sure as to what volume/shape would give me the best outcome.... |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 500 Registered: Sep-04 | 500 ...lol just had to make it to 500 posts |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 502 Registered: Sep-04 | oh and that last set of specs i posted ... the program said a 2.75 in port width.. arent low tuned ports usually wider ports? |
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New member Username: PjcomCurrently - ... USA Post Number: 6 Registered: Jun-05 | how much of a difference does the box make? Does it make the sound quality better or does it just change the type of sound produced? |
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beerman_accelerator-pedal.com Unregistered guest | Cool, people are using my program! Trevor, the program determines port area based on two guidelines for minimizing port noise: A minumum of 10 square inches per square foot, and at least a 9:1 ratio between height and width. Port width and port height make up port area. Port area and tuning frequency determine length. Tuning lower usually means it's going to move more air at resonance, and that might be a reason for making the port wider. 10 square inches of port area to a single cubic foot of airspace is usually enough to prevent noise in most cases, though I'm sure someone disagrees. |
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Silver Member Username: AlpineuserWinchester, TN Post Number: 433 Registered: Mar-05 | thanks for the program i have used it several times |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 549 Registered: Sep-04 | thanks program maker... lol i feel like ur the "architech" in the matrix lol ive finally met you lmao... PJ... the box means EVERYTHING! it determins how a sub will sound, how loud it cang et, how much power it can handle... its 20% equipment and 80% enclosure |
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Silver Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 550 Registered: Sep-04 | but one thing no1 answered... where shud the cutout for the sub be placed on a ported box? |
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beerman_accelerator-pedal.com Unregistered guest | I put it in the center of the "red" panel. |
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