JonnieBlaze

I was just looking for suggestions so I can start looking on my own. I'll find out later what will fit or not..I dont even have the car yet. I just want to start looking at what you all recommend as good midbass drivers. As for this 'vehicle transfer function'...is this the same as the vehicle's resonant frequency or what not? If i remember correctly, is this when you take a woofer in a sealed enclosure, put it in the middle of your car, and start playing frequencies until you find the frequency that's the loudest on the meter? That would be your vehicle's resonant frequency and it's the loudest because not only is the woofer playing that frequency, but your car is vibrating at that same frequency therefore amplifying the sound?

Budget: Around 50 or 60 a piece Mounting Location: Don't have the car yet..so no idea. The only place upfront that I know of would be the doors. If that didnt work I guess I'd be forced to put them in the back above the rear seats. Other Drivers: Well I'm hoping to get a couple of the Sundown 8 inch woofers. Aside from them I'm not sure what other speakers I'll be choosing for the car. Processing: Right now I have nothing. Should I pick the drivers out first then go from there?

Haha...you've proved your point. I didnt know JBL was good quality equipment. For some reason I related them to equipment you'd get at Walmart. But these crown amps are starting to look pretty good to me.

Dont they hit the inside of your door panel when you extend them out so far? Or do midbass speakers not have very much excursion? Any recommendations on midbass drivers?

I dont have the car yet. I'm trying to find something better on gas so I'm sure it'll be some sort of sedan...I just want to be ready for it. Now, hypothetically, say I was putting it in my blazer. Upfront I have two 4.5" Boston Accoustics and two 6.5" Boston Accoustics. Its not very much and its all coming from the headunit but it does ok. I would love not to have subs taking up all my space if this 80Hz-100Hz was achievable without them. I'd probably still get some small 8's however just to round it all out. So what's the story on midbass? Do they need enclosures too? What would be a good budget midbass driver? I was looking at four 8inch woofers for 240...so I guess 'budget' to me is about 60 a piece.

So would this amp be something you'd suggest: JBL Amp I just didnt think JBL was very good. I thought Kicker was higher quality than JBL. However, I just got done talking to Kicker's R&D lab and they dont have any dampening or slew rate specs. At least this JBL lists the dampening factor.

What I want is something that will reproduce the 80Hz to 100Hz range very accurately. This is what you feel when your at a concert and the drummer is using the kick drum. You feel it pound in your chest. I've never been able to replicate this. My goal was to use 8's (sundown's E8s seem to be some of the best around?...I thought the 8s would play these frequencies better without being overly loud, just accurate) and install them in the board behind the back seat of my car where the stock speakers are. I would build the sealed enclosure (or whatever box would be better to achieve this goal) under the speakers hanging down into the trunk space. That way they are not stashed in the trunk and you can clearly hear/feel them without putting the back seats down. For anything under the 80Hz range maybe I will one day get some 12s or something and place them in the trunk. Any suggestions for achieving this?

Agreed. I need a better amp. Thats what I was asking about Again I agree. But with it being sealed and very close to the manufactor spec for a sealed box, shouldnt this have a very small effect? Seal boxes have the capability to get lower but not neccessary as loud as ported right? and they also have more tolerance for error because of the air acting as a spring keeping the sub from damage? I know they are not the best, but in all honesty I'm not too interested in making them much better. They've been out of the car for two years and they'll probably stay that way. My concern is with the new woofers. I'm still going to go with the 8's but I want to make sure I dont mess up the install this time. That why I'm looking for help with the amp decision.

I'm not sure what you're doing with this equation, but if you're trying to figure out if one sub moves more air than another sub, you need to take into account the Excursion of the sub as well. If sub x and y have the same surface area, but sub x reaches to 20 mm and sub y only reaches to 10mm....sub x is obviously moving more air.

speaking of power.... In a sealed enclosure, would a kicker 750.1 be too much for two of these subs as a daily driver? The amp is rated at 750x1 @ 2 ohms....

If I were to use four of these in a sealed enclosure, what frequencies should I send the subs? Would there be any reason to send them frequencies above 200 Hz?

I didnt want to clutter up the thread that was talking about the upcoming E8 woofer but I had some questions about it in relation to other sized woofers. I can not find anyplace in my town that sells or even has 8 inch woofers on display so I can hear. I have no idea what kind of bass come from the 8 inch woofers. All I'm familar with is the bass that comes from my two 12 inch Cerwin Vegas in a sealed enclosure. I'm looking for something punchier (the bass from the 12s seems muddy) but I still want it to get as loud at the lower frequencies as my 12s do (so I'm looking at 4 of these E8s). I just need to know if the 8s will deliver this punchier bass....i'm assuming they do but again I've never heard any 8 inch woofer...

F3 is where the sound drops by 3 db right? so with the 0.280 ft^3 box, anything less than 50 Hz is going to be pretty quiet (unless you have many drivers). what would the F3 be of the .35 ft^3 box?

A lower Qtc alignment eh? How low of a Qtc is needed to achieve this sound? If I made the box slightly larger than this, it would yield a lower Qtc?

I thought the punchy bass was just a higher frequency sound therefore an 8 inch woofer would replicate that higher frequency better than a 12. But I take it that's incorrect? So with these new 8 inch woofers being created here, what kind of box would produce the sound i'm looking for? I've only ever had sealed enclosures (because I assumed they gave the tightest feeling bass). I thought ported box just gave the loud boomy bass so I never wanted them. I thought bandpass boxes were designed for speakers that you were under-powering. And I know nothing about infinite baffle. All I know is what I'm looking for...but I'm not sure how to get it.

Hey everyone, I have a couple questions about this 8 inch woofer. A few years ago I was going to put 4 or so 8 inch woofers together in the back of my blazer. I don't care much for the muddy, deep, SPL contest bass, I like the quick punchy bass with good SQ. I had 2 12 inch Cerwin Vegas in a sealed enclosure and that was very muddy sounding. At that time, according to the Great 8 Challenge the CMP8 was the best SQ in the 8 inch range. I also remember considering the TangBand 8 inch woofers. I don't completely understand all the T/S specs so its hard for me to compare the 8 inch woofer you are creating with the CMP8 or the TB8. So I'm just wondering how they stand up against the CMP8 I guess. How are they different? Can these 8's take the place of the two 12's I have now by keeping the low frequencies but being more punchy..? sorry for my ignorance in all this..lol