posted
Does anyone know how well they can sound if I only run 50 x 2 to these drivers at 4 ohms
and 50 x 2 into my component set at 4 ohms
If thats not enough I can bridge my 4 channel A404 into almost 2 seperate amps just left and right. that will be 200 x 2 at 4 ohms.
I'll need to get someone to build me a set a high quality passive x-overs with 1 imput and 3 outputs. 1 for the mb quart tweeters, 1 for the 5.25 mb quart midrange and 1 for the focal 6kx which will be my midbass.
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Posts: 305 | From: State College - Penn State University | Registered: Jul 1999
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posted
Shane, those SUBS should sound just fine with 50watts. I would consider using them as subs over mids however. You know I had the 5Kx in my car, and loved how they helped smooth out my imaging. As to the crossovers, if you wanted, I could build you something that would really make you proud to have showing in your car's install. They wont be cheap, I'd only use the best components I could find. Let me know and we'll get something worked out.
------------------ STILL waiting to hear a GOOD pair of HLCD's!!
If it dont fit, force it... if it breaks, it needed to be replaced anyway...
posted
what frequences do you suggest that I should split it up?
I'll use my A404 and run it to 200 x 2 at 4 ohms
200/3= about 67 watts into each component
But I'm not sure if the load on the amp with be 4 ohms though. Each component is rated at 4 ohms but would x-over change the load?
I have the MB Quart Musicomp passive x-overs that come with the RSB 215 component set. If I have you build them for me should I just sell them or could you use the components inside it to build the new ones?
Did you build your own passive x-overs or do you have them built into your amps?
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Posts: 305 | From: State College - Penn State University | Registered: Jul 1999
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posted
In my old car, I had quite an extensive crossover network displayed in the amp rack. Yes, I should be able to incorporate the prebuilt x-overs into a custom setup. As to the question of the impedance the amp will see, basically, the amplifier will see 3 different frequency ranges, each of which will present the amplifier with it's associated speaker's load. Does that make sense? In other words the low end will be, say one 4 ohm speaker from 50-120Hz (just pulling numbers outta my butt), the amp sees 4 ohm in that freq range, the mid might run from 120-3000k and be a 4 ohm, so the amp will see 4 ohm between 120-3k, then your tweeter will play from 3k on up to 20k, and it's an 8ohm tweeter, so the amp will see 8ohm from 3k to 20k. Does this make sense now? This is an oversimplified example, you will have some overlap that will affect the load at any given time. But, for our purposes, call it a 4ohm load over the entire spectrum. Anyway, back to the x-overs. If you wanted to build a complete custom crossover network, I would suggest using much higher (tighter, 5% or less) tolerance components than what BA will include with they're sets. Not that there is anything wrong with what they use, but what I would use for the exact same crossover network will probably be 2 or 3 times as expensive as what they use. I will actually take a meter with me and measure mH numbers on coils and the true capacitance on a cap and try to find exact or damn close matches. This makes things more uniform between the 2 channels and helps control goofey problems you could experience. Anyway, let me know what you want to do, we can try to get together on this thing.
------------------ STILL waiting to hear a GOOD pair of HLCD's!!
If it dont fit, force it... if it breaks, it needed to be replaced anyway...
posted
I think that I would run the Focal 6's in the same range as the subs, if they are the 6" subs. I would run them a bit higher, say to 80 or maybe 100Hz, then your 5.25's can take over. 100Hz for a 5.25 shouldn't be a problem at all. 2600 for the tweet, as long as it's the crossover from MB should be fine. If you pretty much stuck with the freq's you've stated, run it and see how you like it. If it sounds good to you, it's probably going to sound fine to anyone else.
------------------ STILL waiting to hear a GOOD pair of HLCD's!!
If it dont fit, force it... if it breaks, it needed to be replaced anyway...
posted
Ok. I think I understand what's going on. The focal 6kx drivers are like 6" subs. so I can give the the whole signal that I'm sending the subs but up to 80 or 100 instead of like 50.
How does 90 htz sound for a cut off point? I have a 2 way crossover with that chip in it right now.
I think that doing it this way will be alright. The only bad think is that I'm going to be sending my MB Quart component set 50 x 2 instead of like 134 x 2
How much would I gain by incresing that.
my total system power will go from 800 watts to 1000 watts.
what kind of power class would I be in.
I'm running a A600 bridged mono a 4 Ohms = 600 watts a A404 bridged run in stereo at 4 ohms = 50 x 4
I don't really what the power classes are really about...
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Posts: 305 | From: State College - Penn State University | Registered: Jul 1999
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posted
Shane, you've got it! That 6KX is a subwoofer! Just a bit smaller than most.... The 5KX's I had in the honda were in the front doors, in steel boxes that I actually welded in place, each one in .18f3, ported, and tuned to 70Hz. I think with the 6", I'd probably try getting all the specs from Focals website, plugging them into termpro, and see what a small sealed/vented box will do. It wont have to be particularly smooth, or go really deep, as long as there are no huge humps or dips above or below tuning frequency. You may have to adjust the box size to get it looking good, but I think .25 should be pretty close. You crossover points should work just fine by the way. You may want to leave your options open, you may have to change crossover points, but that is best determined by listening to the system. Best of luck, I wanna hear this car when you get it done! And if you need anything else, lemme know!
------------------ STILL waiting to hear a GOOD pair of HLCD's!!
If it dont fit, force it... if it breaks, it needed to be replaced anyway...
I don't have termpro.. where is dukk when you need him??
I was thinking about building some pods for them in my door but not exactly boxes.. I just might have to if their like subs.. I don't know if I want to port them either. How about just sealing off the door then using the door as an enclosure. I'd like to build an enclosure for them though.
And thanks again for all of the help..
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Posts: 305 | From: State College - Penn State University | Registered: Jul 1999
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