Couple of questions. I'll put them both under the same thread to keep board congestion down.
Is a speaker's freequency response supposed to be the range of freq's it will respond to at or above the rated sensitivity? Like if it's 90 dB, and 70 - 20kHz, then the 70 - 20kHz will be at 90 dB or above? Anything in the 20 - 70Hz range will be less than 90 dB?
Also, is a deck's preamp voltage output measured as peak voltage, as in the deck has a 2 volt output and it's measured at 2 volts at the peak of the wave? If so, then do any companies put out decks that are measured peak - to - peak to make this spec look bigger than it is? Like no name companies(Pyramid, Boss, Legacy)?
Replies (3)
audeogod on 02/10/2005 15:00:36
One more time around..............GO!
uochronos on 02/10/2005 16:38:07
threw the frequency range you well get differnt DB rating.... that isnt the subs fault though the car its in effects that alot as well as the box... remember the sensitivty spec is in free air with a taste tone and in a controlled enviroment..
as for the preamp voltage... it is differnt from company to company. some companies say they have 8volt preouts in reality theyu have four 2 volt preouts.... as for is it max power i would assume that some companies do it that way.
Chronos
MrBrownstone on 02/10/2005 20:22:22
Boy there's an open-ended question.
The Sensitivity is the sound pressure level obtained from a specified
Power lever (usuall 1W, but can be other)
Distance (usually 1 meter, but can differ)
Frequency (can be at 1 or many frequency)
I look at sensitvity ratings like I look at a horsepower rating on a car. THe mini cooper SS version will closely tie the 2002 Chev Camaro Z28 in the 0-60 time....but have 125 fewer horsepower at the engine. There are a lot of other factors more important than sensitivity to consider. How a woofer reacts to the box you'll use is more important that that statistic.
If I were you, I wouldn't waste your time reading that specification or many others when choosing a speaker. Your ears are what I'd use. 20-70Hz..look at the F3 (subsonic) frequency and you'll soon learn the true bottom end of the frequency response
Voltage in preouts is max power. Since it's AC current, phase (+/-) is not a factor. Amplitude of the wave (in voltage) is basically the maximum output that Head Unit is capable of playing.
Is a speaker's freequency response supposed to be the range of freq's it will respond to at or above the rated sensitivity? Like if it's 90 dB, and 70 - 20kHz, then the 70 - 20kHz will be at 90 dB or above? Anything in the 20 - 70Hz range will be less than 90 dB?
Also, is a deck's preamp voltage output measured as peak voltage, as in the deck has a 2 volt output and it's measured at 2 volts at the peak of the wave? If so, then do any companies put out decks that are measured peak - to - peak to make this spec look bigger than it is? Like no name companies(Pyramid, Boss, Legacy)?
Replies (3)
audeogod on 02/10/2005 15:00:36
One more time around..............GO!
uochronos on 02/10/2005 16:38:07
threw the frequency range you well get differnt DB rating.... that isnt the subs fault though the car its in effects that alot as well as the box... remember the sensitivty spec is in free air with a taste tone and in a controlled enviroment..
as for the preamp voltage... it is differnt from company to company. some companies say they have 8volt preouts in reality theyu have four 2 volt preouts.... as for is it max power i would assume that some companies do it that way.
Chronos
MrBrownstone on 02/10/2005 20:22:22
Boy there's an open-ended question.
The Sensitivity is the sound pressure level obtained from a specified
Power lever (usuall 1W, but can be other)
Distance (usually 1 meter, but can differ)
Frequency (can be at 1 or many frequency)
I look at sensitvity ratings like I look at a horsepower rating on a car. THe mini cooper SS version will closely tie the 2002 Chev Camaro Z28 in the 0-60 time....but have 125 fewer horsepower at the engine. There are a lot of other factors more important than sensitivity to consider. How a woofer reacts to the box you'll use is more important that that statistic.
If I were you, I wouldn't waste your time reading that specification or many others when choosing a speaker. Your ears are what I'd use. 20-70Hz..look at the F3 (subsonic) frequency and you'll soon learn the true bottom end of the frequency response
Voltage in preouts is max power. Since it's AC current, phase (+/-) is not a factor. Amplitude of the wave (in voltage) is basically the maximum output that Head Unit is capable of playing.
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