I bought a couple of 8" RF stage 1 subs. I recently tried them out with my alpine MVT-407 alpine amp. It sounded horrible. rattling at mid to high levels while not putting out any substantial amout of bass. Got me a little bit scared since I just bought an amp to go with it. Is this becuase theyre not in boxes or is it just low quality subs? You guys already told me it was a bad buy. But I got on E-bay and they @!#$in said they were the hardest-hitting subs they sold. I'm contemplating takin them back. mostly because I messed with the crossover on my alpine which is hooked up to the speakers usually and figured out I wasn't feeding the 6x9s any of the low notes and now when they hit at any decent volume the rearview mirror does the jitterbug. I was thinkin bout using the money I got back for a couple of infinity tweeters. Handles bout 50 watts of power. The 4x6 RF punchs I got for Christmas just don't handle the power I have routed to them. Any help would be greatly appriciated.
put them in a box thats why they sound like ass.
Rocksford are generally good subs. Just get a box (you should have a sheet in the packaging for box dimensions) and it will sound a lot better.
So you don't think that my 6x9s will drown out the subs at high levels? interesting. Next question. Is 8" the ideal size or should I trade in for some 12s. What I'm goin for here is some serious bass. if I'm gonna go the sub route, then I'm gonna go all out. so, serious bass will the 8 inchers do what I want?
Typically the smaller the subwoofer the better the sound clarity, the bigger the subwoofer, the better the bass output
So SQL (Sound Quality Level) -> 8-10
SPL (Sound Pressure Level) -> 12-15
This is "typically".
8's aren't really what I would actually call a "subwoofer". To me they're more of a mid-range speaker to me. I try to stay at 10 inch subs, because I'm a real stickler for sound quality.
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Also, no 6x9's will not drown out the subs, trust me. Once you get them in a box, the subs will probably drown out the 6x9's.
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Thanx. Thats what I needed. I'm gonna try the 8". If it dosn't do what I want then I'll just wait and upgrade to the 10's. I gathered from what you said and it seems like your not really partial to the 12" due to sound clarity losses. Thanx for the help. Seems my opinion was without the equipment set up right. I was really doubting the quality of the sub, first impression anyway.
10" 's don't sound better than 12"s ... That's stupid. It's all in the quality of the product your buying. How would a 10 sound better than a 12. I don't get the logic behind this. 12"s just have the capability to generally get louder than a 10" of equal build because the cone is larger so it moves more air. There's more to it than that as well, but that's another topic completely. Just trying to point out a 10" is not clearer than a 12" of equal quality. And Scriz if you were any type of a 'stickler' for sound quality you would have done some research and found that out.
wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good. 
LOL
Trust me, I've done plenty of research.
Believe who you wish Redline, I'll just say that I worked in quality control at sony sound for 3 years.
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If you are going for a lot of bass, go with 12" or 15" sub(s). I currently have 2 Kicker Comp VR 12's in a ported box feeded 400watts to each sub and it freaking pounds. It has great quality also. Just because you go up to a 12 does not mean you lose quality. Mabey some, but some 12's quality blows some 10s out of the water. It all depeneds on the brand and quality of the sub.
Now yes, 10s have better quality nomrally. a 10 Kicker comp VR has more quality than a 12, while the 12 has more bass than the 10.
It is also all in your setup... right size wires, good RCAs and Speaker wires, and good connections through and through make a good system... not the price or size of the speakers.
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"Laying in bed one night, I said "Where did I go worng?". Then I heard a voice say "This is going to take a while..."
wysiwyg wrote:schembo2000 wrote:It is well known that 10's produce tighter bass than 12's of a similar model. Thanks for the input 
It is well THOUGHT that 10's move faster then 12's. not well known, my friend
Moving mass does not dictate transient response (i.e. how fast your sub moves). The inductance of the driver is what effects the response.
I remember getting into an arguement about this before... Believe wysi or not... I would, he's a smart guy when it comes to this stuff. Trust me.
wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.
LOL
Believe who you wish, as I said.
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i'd go with whatevers post over yours scriz. any decent manufactuer will build a motor structure to support the size of the sub. now maybe sony cheaped out and had motor structures for 10" subs trying to push 15" subs and theres where quality control issues came in but thast not how most decent manufacturers build a sub.
a 15" sub can have just as good sound quality that a 8" sub does.
saying a 10 is for sq and a 15 is for spl is one of the car audio myths that has gone around for year. i can point you out to several high end pro and expert sound quality competiors that are using 15" drivers for sound quality and who walk off the podium every year with first place trophies.
now if you are trying to make a sub play midbass then yeah a 8 will sound better then a 15 of 12 but thast not what subs are meant to do. giving them the proper frequencies and right power in the right box will give you great results and great sound. now redline if you want a ton of bass 8's arnt going to do it. but since you allready have them go ahead and build a nice box and give them a try.
http://www.flickr.com/photos/sndsgood/ https://www.facebook.com/#!/Square1Photography
Amen Jason Wysiwyg is dead on with what he said and whatever had a very good point.
Scriz if you've done so much research can you show me where?
Scriz wrote:Typically the smaller the subwoofer the better the sound clarity, the bigger the subwoofer, the better the bass output
This is "typically".
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Hopefully someday we can win the war on myths
wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.
LOL
If you've got front speakers that will fill in the frequencies above what a 15 will produce, then it will sound very very nice, depending on installation and other factors. There are always factors.
That said, it's EASIER to make a 10" sub sound better, but with the right means and execution, a 15 WILL sound better.
So let me get this straight. Listening to a sub without a box is just stupid? So a box will make all the difference. What I can't understand is my 6x9s are not in any kind of box and the bass output is decent for a 6x9. So why would a sub need a box to even get a grasp on what they would sound like? The other thing is at least one of them is still in the box so I could send it back. I guess what i'm worried about is gettin at least half of what I payed for them back If I don't want them. Would a 150 rms amp work if I wanted to upgrade to a sub that will handle 200w rms?
6x9's are in the rear deck correct? so the front of the speaker is sepertated from the back of the speaker that is why.
when you have the sub just sitting on the floor and playing it the bass waves from the back of the sub will cancel out the sub waves from the front because they are 180degrees out of phase. a good box has more to do with how good your sub will sound then the sub itself does. i'd rather have a 100$ sub in the perfect box over a 1000$ sub sitting on the floor.
as for scriz. typically is somewhat right. where its right is in cheap manufacturers. some cheap manufacturers will use the same motor structure for diffrent sized speakers and this is where the whole thing started. but quality manufacturers wont do that.
http://www.flickr.com/photos/sndsgood/ https://www.facebook.com/#!/Square1Photography
Yeah, damn motors built for 1 size sub being placed in all the different sized for that model. Then again, they could use a motor off the 12" model that was designed to push that size cone in the 10" then the 10" will sound sloppier than the 12".
Redline...Yes listening to a sub out of the box is pretty dumb
Sndsgood covered it for ya...Try them in a box, they're sound muuuch better, and if you're still not happy with the output, upgrade time.
wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.
LOL
