Comparison JBL Stage2 624 vs JBL Stage3 627
Add to comparison |  |  |
|---|---|---|
| JBL Stage2 624 | JBL Stage3 627 | |
from $57.95 | from $89.95 | |
| TOP sellers | ||
| Application area | car | car |
| Type | coaxial | coaxial |
| Size | 6.5" (16.5 cm) | 6.5" (16.5 cm) |
| Number of bands | 2 | 2 |
Specs | ||
| Rated power | 40 W | 45 W |
| Max. power | 240 W | 135 W |
| Frequency range | 55 – 20000 Hz | 55 – 20000 Hz |
| Impedance | 4 Ohm | 3 Ohm |
| Sensitivity | 91 dB | 92 dB |
Size | ||
| Woofer size | 165 mm | 165 mm |
| Mounting depth | 56 mm | 49 mm |
| Added to E-Catalog | september 2019 | may 2019 |
Compare JBL Stage2 624 and Stage3 627
Car speakers JBL Stage2 624 and JBL Stage3 627 have similar characteristics, but there are several key differences. Stage2 624 has a nominal power of 40 W and a maximum of 240 W, whereas Stage3 627 has a slightly higher nominal power of 45 W, but a lower maximum power of 135 W. The sensitivity of Stage3 627 is higher — 92 dB compared to 91 dB of Stage2 624. The impedance of Stage3 627 is 3 ohms, which can provide better performance in some conditions. Both speakers have the same frequency range and size, but Stage3 627 has a smaller mounting depth — 49 mm compared to 56 mm of Stage2 624.
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Glossary
Rated power
Rated power of the acoustic system. Most often, the average (root mean square) sound power is indicated as rated.
The most obvious point related to this characteristic is the volume of sound: the more powerful the sound system, the louder the sound it can produce, all other things being equal. In addition, compatibility with an external amplifier depends on this indicator: its power should not exceed the power of the sound system, otherwise overloads and damage to the speakers are possible.
The most obvious point related to this characteristic is the volume of sound: the more powerful the sound system, the louder the sound it can produce, all other things being equal. In addition, compatibility with an external amplifier depends on this indicator: its power should not exceed the power of the sound system, otherwise overloads and damage to the speakers are possible.
Max. power
The maximum power of a short-term (up to several seconds) incoming signal that the speaker can withstand without physical damage. Just like the nominal power, it matters for the selection of acoustics for an amplifier (or vice versa): it is believed that the maximum power of the speakers should be at least 2 times higher than the maximum power of the signal source.
Impedance
The term "impedance" refers to the electrical resistance of AC systems whose DC resistance is very low, such as loudspeakers. In modern car audio, the most common impedance is 2, 4 or 8 ohms. This parameter has practically no effect on the sound quality — it serves to select the optimal combination of acoustics and an external amplifier. If the speaker impedance is higher than that for which the amplifier is designed, the sound will be quieter than necessary, and if the impedance is lower, distortion in the sound is possible.
Sensitivity
This parameter determines the volume of the sound of a particular speaker when a certain standard signal is fed to it. Typically, this is considered a 1 W signal with a frequency of 1000 Hz. The higher the sensitivity, the less the speaker is demanding on the power of the amplifier. So, it is believed that for acoustics connected directly to the car radio, the sensitivity should be 80 dB or more; for less sensitive systems it is recommended to use a separate amplifier.
Mounting depth
The mounting depth of car audio is, in fact, the size of the speaker in depth. Note that for component sets (see "Type") this parameter is given for the largest speaker, and for case models it is generally irrelevant.
The mounting depth, along with the diameter of the speaker (see above), determines the amount of space needed to mount the speaker — in this case, how deep a niche would be required for normal mounting. At the same time, the larger the speaker, the larger, usually, the installation depth. And with similar diameters of equal size, a more powerful model is likely to be more “deep”.
The smallest amount of space — up to 15 mm deep — is required by some tweeters. A depth of 16 – 30mm is normal for tweeters and very shallow for general range speakers, most of these models have a depth of 30mm or more. At the same time, full-range speakers are usually "recessed" by less than 60 mm, component systems — by less than 90 mm, and more depth may be required only for some coaxial and mid-range models and, oddly enough, tweeters.
The mounting depth, along with the diameter of the speaker (see above), determines the amount of space needed to mount the speaker — in this case, how deep a niche would be required for normal mounting. At the same time, the larger the speaker, the larger, usually, the installation depth. And with similar diameters of equal size, a more powerful model is likely to be more “deep”.
The smallest amount of space — up to 15 mm deep — is required by some tweeters. A depth of 16 – 30mm is normal for tweeters and very shallow for general range speakers, most of these models have a depth of 30mm or more. At the same time, full-range speakers are usually "recessed" by less than 60 mm, component systems — by less than 90 mm, and more depth may be required only for some coaxial and mid-range models and, oddly enough, tweeters.