Recently, a friend of mine in my dorm gave me a set of old busted up speakers. He said to take 'em for free because they were old and probably didn't sound too good. Little did I know (about 2 weeks later after just having them sit around) that they were JBL century L100 speakers, which are right now going for a good 2-300 a pair on ebay. I cranked these guys up and I realized that for my dorm next year, I need serious sound. Seriously BIG sound. So, in honor of the free speakers, here is my next endeavor. Critique it as much as possible, as this is far from anything I've done yet.
The drivers are as follows (you'll see where they all go //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif ):
Dayton DVC 10" subwoofer
Alesis 6.5" carbon fiber mid/woofer
Hi-Vi SD1 1" tweeter
Here's preliminary 3D look:
Before I ask my questions, here's some other facts. I am not making my own x-overs for these speakers; they would just be too expensive. Rather, I'm going to use one of the Dayton 3-way filters they've got on PE, the one with the 375 lowpass. So, onto the questions:
1. Efficiency, efficiency, efficiency! Do you think that I could push these guys with a receiver to decent output levels, or would I have to run them through an amplifier to get enough power? Remember, these need to have high output levels, but buying dedicated equipment will defeat the purpose of low-cost, so let me know what you think on that.
2. The bottom chamber is 3.87 cubes tuned to 36.5hz, which should be sufficient to pick up any and all low end that these have to offer //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif. Point being, do you think that a tuning this low, with the edge of the passband rolling off around 350hz would cause blending issues with my midrange? The tweeter and mid should be fairly seamless, and I know bass is omnidirectional, but I do not want boomy bass if I'm not trying to throw a party. Yes, I will have other hi-fi equipment in the room, but I want to know just the same.
3. Now for the most and also the least important bit: grilles. Should I use grills on these or not? Here's the necessary and unnecessary reasoning: people like to play with speaker cones. For some reason they just like touching the, pushing in dustcaps or fondling phase plugs. I'm not worried too much about the sub, but some ******* might get curious about what textile tweeters are and might start playing around with it. A grille, although weak, almost always prevents people from touching the cones unless they are a speaker enthusiast. I don't want any accidents either. Now, with that said, they would be really unnecessary as putting grilles on two 10" subwoofers in a cabinet is next to an insult, as they'll just blow them off anyway. Also, I forgot to show that the subs and drivers will all be flush mounted (that's the purpose of the second baffle on the sub part, the angle at the top is for aesthetics only //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif ), so they won't actually come in contact with the grilles. None the less, I would use a magnetic grill guide if I did decide to do that, which also defeats the purpose of the grill as I would need two separate ones for each cabinet (different baffle heights).
Lots of info here, but just wanna ask y'all before I do anything...stupid //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
-Dave
The drivers are as follows (you'll see where they all go //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif ):
Dayton DVC 10" subwoofer
Alesis 6.5" carbon fiber mid/woofer
Hi-Vi SD1 1" tweeter
Here's preliminary 3D look:
Before I ask my questions, here's some other facts. I am not making my own x-overs for these speakers; they would just be too expensive. Rather, I'm going to use one of the Dayton 3-way filters they've got on PE, the one with the 375 lowpass. So, onto the questions:
1. Efficiency, efficiency, efficiency! Do you think that I could push these guys with a receiver to decent output levels, or would I have to run them through an amplifier to get enough power? Remember, these need to have high output levels, but buying dedicated equipment will defeat the purpose of low-cost, so let me know what you think on that.
2. The bottom chamber is 3.87 cubes tuned to 36.5hz, which should be sufficient to pick up any and all low end that these have to offer //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif. Point being, do you think that a tuning this low, with the edge of the passband rolling off around 350hz would cause blending issues with my midrange? The tweeter and mid should be fairly seamless, and I know bass is omnidirectional, but I do not want boomy bass if I'm not trying to throw a party. Yes, I will have other hi-fi equipment in the room, but I want to know just the same.
3. Now for the most and also the least important bit: grilles. Should I use grills on these or not? Here's the necessary and unnecessary reasoning: people like to play with speaker cones. For some reason they just like touching the, pushing in dustcaps or fondling phase plugs. I'm not worried too much about the sub, but some ******* might get curious about what textile tweeters are and might start playing around with it. A grille, although weak, almost always prevents people from touching the cones unless they are a speaker enthusiast. I don't want any accidents either. Now, with that said, they would be really unnecessary as putting grilles on two 10" subwoofers in a cabinet is next to an insult, as they'll just blow them off anyway. Also, I forgot to show that the subs and drivers will all be flush mounted (that's the purpose of the second baffle on the sub part, the angle at the top is for aesthetics only //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif ), so they won't actually come in contact with the grilles. None the less, I would use a magnetic grill guide if I did decide to do that, which also defeats the purpose of the grill as I would need two separate ones for each cabinet (different baffle heights).
Lots of info here, but just wanna ask y'all before I do anything...stupid //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
-Dave
