Kicker L7 vs Kicker CVX - Drive Accord Honda Forums | radio-pro.ru
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post #1 of 9 Old 09-20-2010, 01:50 PM Thread Starter
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Kicker L7 vs Kicker CVX

now before you go bashing me this isnt a question...this is more of a helpful thread to others...mods...see if you could consider this being a sticky...

Many people have wondered for their setup which is louder and etc etc...well im sure its been figured out before but the MAIN difference is....SHAPE...yes it is true that a square sub 12" will have about 25% more SPL than a circle 12". but the 25% is almost sub-audible (not really able to tell the difference)..that is...while staying within the same brand....dont go crossing mtx's and then comparing them with L7s....thats a diff story...another difference is...SENSITIVITY...many dont really know what that is so im here to explain...

SENSITIVITY is a measurement of how loud a speaker will get with a given amount of power. If you see a speaker rated at 90dB, that means that with 1 watt of power, it will produce 90dB of output when measured from 1 meter away. A subwoofer with a high sensitivity rating will require less power to reach a high output level, compared to a sub with a lower sensitivity. Now lets look at the L7 shall we?

Size (IN.,CM) 15, 38.1
Sensitivity (dB 1w/1m) 89.4
Frequency Response (Hz) 18-100


now this is the 15 model...as we can see the L7 has exactly 89.4db...see the parentheses next to it?...ill highlight it...there see it? it says db...1w/1m...meaning like i stated earlier... 1 watt at 1 meter..so with 1 watt the L7 15 will produce 89.4 dbs when measured from 1 meter away...Now lets take a look at the CVX 15

Size (IN.,CM) 15, 38
Sensitivity (dB 1w/1m) 91.6
Frequency Response (Hz) 18-500

now as we can see with the CVX its dbs measured with 1 watt are at 91.6 from 1 meter away...more efficient and also a tad louder with a given amount of power......at least over the L7 15 that is...so lets say your check is running a little late and u bought your CVX 15 and your box but dont have the money to upgrade your 500wRMS amp....well with that 500wRMS the CVX will perform better than the L7 will...thing you have to take into consideration will be that the L7 is larger though so its almost as if the SQUARE shape of the cone offsets the fact that the CVX's SENSITIVITY is higher....so again...between the two...not a major difference...lets look at the frequency range....

The typical frequency range for a subwoofer is between 20–200 Hz. Professional concert sound system subwoofers typically operate below 100 Hz, and THX-approved systems in movie theaters operate below 80 Hz. The frequency response specification of a speaker "attempts to describe the range of frequencies or musical tones a speaker can reproduce, measured in Hertz" Subwoofers vary in terms of the range of pitches that they can reproduce, depending on a number of factors such as the size of the cabinet and the construction and design of the enclosure and driver(s). Specifications of frequency response depend wholly for relevance on an accompanying amplitude value—measurements taken within a wider amplitude range will give any loudspeaker a wider frequency response.

For example... The Abyss subwoofer can reproduce pitches from 18 Hz (which is about the pitch of the lowest rumbling notes on a huge pipe organ with 32-foot (9.8 m) bass pipes) to 120 Hz. Nevertheless, even though the Abyss subwoofer can go down to 18 Hz, its lowest frequency and maximum SPL with a limit of 10% distortion at 2 meters in a large room is 35.5 Hz at 79.8 dB.

Therefore just because a sub can reach a certain Frequency range doesnt mean itll sound very good doing it...now lets look at our kicker subs..

The CVX has a range of 18hz-500. That means it can play anywhere from 18hz to 500 hz...that doesnt mean it will play it nice and loud and clearly...that just mainly means its possible to play them...just like saying..yeah its possible for a human to fly...maybe not on their own..but its possible (ya no that kinda loophole type of logic)...so at wits end...(18hz and 500hz) itll probably sound like BLEEP....now lets look at our L7...its Frequency range is 18-100...wow right?...compared to the CVX the L7 doesnt do too well...at least if your looking for a SQ (sound quality) setup...it can only hit up to 100hz and down to 18hz...now lets place logic here...obviously in order to hit the 100hz it wont have to expand as far as the CVX has to just to get to 500hz.....but when you get back to wits end...(18hz and 100hz) again...its probably going to sound like BLEEP.....so a CVX can sound more like a subwoofer...whereas a L7 will sound more like...what i call.."Movie Theater Bass"...ya kno while watching The A-Team....lol...but on the counterside the CVX will be better at playing notes such as the ones in the "Inception" trailer....you kno exactly what im talking about...lol...

So down to the bottom line....

The kicker CVX can obviously outperform the kicker L7...but to say it sounds better would be an opinion...and if ive said that i apologize. I have a CVX so i think ill be staying with that..

CVX- The CVX can hit higher notes than the L7 while still sounding good but, when pushed to the extremes, of its frequency range...not power, it will start to sound bad.....

L7- The L7 plays the low notes as well as the CVX does..thing is its bigger...has more surface area and will probably be louder when producing those lower notes. Just stick within parameters because once you start hitting extremes, again with frequency not power, it will start to sound bad.

Take this logic and apply it...it works in every situation....but 3 things to remember....

1. No matter how a sub performs...it needs a good enclosure to go with it to sound phenomenal.

2. Just because your opinion is in favor of "the other sub" doesnt mean that "this sub" is Bull-ish or crappy sounding.

3. Last but not least....YOUR EAR IS THE BEST JUDGE!!!


265k and Running
Tons of Upgrades Currently in Progress...[3/31/16]

98 LX

ENGINE MODS
-Spectre CAI
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-4-2-1 Header
-CherryBomb GlassPack Resonator
-JDM F23A Swapped

COSMETIC MODS
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post #2 of 9 Old 09-20-2010, 02:27 PM
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post #3 of 9 Old 09-20-2010, 04:58 PM
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2 db more efficient for a sub isn't noticeable at all to the ear.
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post #4 of 9 Old 09-20-2010, 06:26 PM
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Quote:
Originally Posted by mrmondaynight View Post
2 db more efficient for a sub isn't noticeable at all to the ear.
wouldn't this be very noticable to the ear, considering a change in 3db is 100% louder

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post #5 of 9 Old 09-20-2010, 07:15 PM
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No, you need double the power to gain 3 db.

But driver sensitivity isn't enough information to tell you if one speaker is better than the one that needs double the power though... gaining 3 db's of volume isn't very much volume, most ppl prob wouldn't even notice the difference in that volume level. There are waaayyyy too many other factors that determine how a speaker is going to sound...

Read up on Hoffman law.

Efficiency, box size, low end extension. You could choose 2 of them.

In car audio, you don't want a huge box and you will want low end extension, so you must trade these for efficiency.
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post #6 of 9 Old 09-21-2010, 09:15 AM Thread Starter
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never said it sounded better...and i actually quote..."but to say it sounds better would be an opinion...and if ive said that i apologize"

265k and Running
Tons of Upgrades Currently in Progress...[3/31/16]

98 LX

ENGINE MODS
-Spectre CAI
-Flowmaster 40 Series
-NGK G-Power Plugs
-4-2-1 Header
-CherryBomb GlassPack Resonator
-JDM F23A Swapped

COSMETIC MODS
-Double 5% Tint
-Twin Halo Projectors
-Bright White LED Turn Signals
-DDM Tuning 6000k 35w

SUSPENSION MODS
-Megan Strut Bar

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post #7 of 9 Old 09-21-2010, 06:03 PM
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Quote:
Originally Posted by mrmondaynight View Post
2 db more efficient for a sub isn't noticeable at all to the ear.
sensitivity is one of the most misleading and fudged parameters that there is

Quote:
Originally Posted by jmoosh View Post
wouldn't this be very noticable to the ear, considering a change in 3db is 100% louder
noooo, not even close. you can't go by that rating for nearly anything. all sensitivity tells you is is the drivers efficiency 1W 1M (supposedly ). it means nothing as to what your setup will do on the meter.

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post #8 of 9 Old 09-22-2010, 09:36 AM Thread Starter
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Quote:
Originally Posted by type_x View Post
all sensitivity tells you is is the drivers efficiency 1w 1m (supposedly ). It means nothing as to what your setup will do on the meter.
exactly...

265k and Running
Tons of Upgrades Currently in Progress...[3/31/16]

98 LX

ENGINE MODS
-Spectre CAI
-Flowmaster 40 Series
-NGK G-Power Plugs
-4-2-1 Header
-CherryBomb GlassPack Resonator
-JDM F23A Swapped

COSMETIC MODS
-Double 5% Tint
-Twin Halo Projectors
-Bright White LED Turn Signals
-DDM Tuning 6000k 35w

SUSPENSION MODS
-Megan Strut Bar

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post #9 of 9 Old 09-22-2010, 09:43 AM Thread Starter
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the whole idea was to say ok the only main difference of the two subs are 3 things...Freq range..Sensitivity...and shape...being that the sensitivity is always a hazy subject..it basically means that the only TRUE difference is the Freq range and the shape...meaning....NO BIG DIFF BETWEEN THE 2....

265k and Running
Tons of Upgrades Currently in Progress...[3/31/16]

98 LX

ENGINE MODS
-Spectre CAI
-Flowmaster 40 Series
-NGK G-Power Plugs
-4-2-1 Header
-CherryBomb GlassPack Resonator
-JDM F23A Swapped

COSMETIC MODS
-Double 5% Tint
-Twin Halo Projectors
-Bright White LED Turn Signals
-DDM Tuning 6000k 35w

SUSPENSION MODS
-Megan Strut Bar

AccordLXMaster is offline
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