frequency response
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From: So Cal
frequency response
i am planning my system for my 01 screw. How much should i be focused on frequency response specs on the subs. i notice the 10" fozgates and pioneers go much lower say 18 hz than say an mtx or kicker that only hit 30hz or so. Any help would be appreciated. I have the means to buy whatever amp is nec so money isnt a factor just sq.
Thanks
Frank
Thanks
Frank
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From: Chillicothe, Ohio
If those specs were based on the same criteria everyone would buy the Rockfords or Pioneers. The thing about specs is that there are no stringent requirements that they all be "equal", so to speak. For instance, two amps may be rated at 50 watts per channel. One may produce this number continuously with 0.3% distortion, while the other may produce 50 watts max at 10% distortion. At 0.3% the second amp may only produce 20 watts. A lot depends on how the company decides to publish their specs. In regards to the subs, if you are looking at comparable models of the brands mentioned, the actual differences wouldn't be very much. But you can't judge top of the line from one brand and budget line from another.
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Senior Member
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From: So Cal
Sounds like sound advice. What should I be looking for besides.
Mounting depth
Efficiency (cubic ft req)
Freq response
Ohms
Of course sound by ear
Are there other factors that I am not taking into account. Are there inherent sound qualties from different cone material?
How does the size of the magnet effect the sound.
As you see I guess I need a crash course in subs so I dont get taken by some sales person worried about there commision.
Thanks a bunch
Fran k
Mounting depth
Efficiency (cubic ft req)
Freq response
Ohms
Of course sound by ear
Are there other factors that I am not taking into account. Are there inherent sound qualties from different cone material?
How does the size of the magnet effect the sound.
As you see I guess I need a crash course in subs so I dont get taken by some sales person worried about there commision.
Thanks a bunch
Fran k
Senior Member
Joined: Nov 2002
Posts: 514
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From: Chillicothe, Ohio
Originally posted by poolvibe
Sounds like sound advice. What should I be looking for besides.
Mounting depth
Efficiency (cubic ft req)
Another manufacturer spec, that may or may not be "honest"
Freq response
Ohms
Depending on your amp, be certain to configure your sub set-up correctly to get the proper "load" in ohms. If you have bridge a 2 channel amp that is "safe" into 2 ohms stereo, you must have a 4 ohm set-up when bridged. If you use a high current amp of some kind or a mono amp, it will be different.
Of course sound by ear
Are there other factors that I am not taking into account. Are there inherent sound qualties from different cone material?
That's one of those "can of worms" questions. There are many arguments favoring different materials. Old fashioned treated paper is quite good when it comes to measured response charts. But they don't always hold up well in a car environment. Polypropylene and other forms of plastic have more durability. There are kevlar, metal and others. Then on top of that you have "good, better and best" versions from each company. They all have pros and cons. It may come down to a matter of taste and budget.
How does the size of the magnet effect the sound.
All other things being equal, a bigger magnet is better. But it gets harder to judge when comparing different brands that have other differences besides the nametag.
As you see I guess I need a crash course in subs so I dont get taken by some sales person worried about there commision.
Thanks a bunch
Fran k
Sounds like sound advice. What should I be looking for besides.
Mounting depth
Efficiency (cubic ft req)
Another manufacturer spec, that may or may not be "honest"
Freq response
Ohms
Depending on your amp, be certain to configure your sub set-up correctly to get the proper "load" in ohms. If you have bridge a 2 channel amp that is "safe" into 2 ohms stereo, you must have a 4 ohm set-up when bridged. If you use a high current amp of some kind or a mono amp, it will be different.
Of course sound by ear
Are there other factors that I am not taking into account. Are there inherent sound qualties from different cone material?
That's one of those "can of worms" questions. There are many arguments favoring different materials. Old fashioned treated paper is quite good when it comes to measured response charts. But they don't always hold up well in a car environment. Polypropylene and other forms of plastic have more durability. There are kevlar, metal and others. Then on top of that you have "good, better and best" versions from each company. They all have pros and cons. It may come down to a matter of taste and budget.
How does the size of the magnet effect the sound.
All other things being equal, a bigger magnet is better. But it gets harder to judge when comparing different brands that have other differences besides the nametag.
As you see I guess I need a crash course in subs so I dont get taken by some sales person worried about there commision.
Thanks a bunch
Fran k
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Joined: Aug 2003
Posts: 883
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From: Atlanta, GA
An important note here is pretty much addressed by 97f250 but I feel an important factor was left out. Magnet size is important but not a good judging point since field strength of the magnet is really most important. Like he said all things being equal then the large the better but if the material of the magnet differs (and between different sub lines and companies it does) than this point is moot.
In the realm of SQ I feel the most important factor to look at is the Qts the lower number here the better the sub at low end response as well as response to the rapid changes present in musical content. If you are wanting all out best SQ you can get I would consider using an aperidoic membrane for your enclosure. The downside is that they take more time to get them tuned just right and you will need access to an RTA (real time analyzer). Another factor is they will not play as loud as they would in a sealed or ported enclosure. But then again another upside is the smaller you can make the enclosure the better sound you can achieve.
In the realm of SQ I feel the most important factor to look at is the Qts the lower number here the better the sub at low end response as well as response to the rapid changes present in musical content. If you are wanting all out best SQ you can get I would consider using an aperidoic membrane for your enclosure. The downside is that they take more time to get them tuned just right and you will need access to an RTA (real time analyzer). Another factor is they will not play as loud as they would in a sealed or ported enclosure. But then again another upside is the smaller you can make the enclosure the better sound you can achieve.