cotjones 10+ year member
CarAudio.com Veteran
I don't care about the mounting.
Is one of these better than the other?
They are virtually the same price.
I see that the sc-90 has a lower frequency range (800hz), lower resonant frequency, and higher Q across the board.
What differences if any are these parameters going to translate into in the car?
I'm running them on very high power. probably close to the 100w RMS they are rated.
I don't want lower frequency response from tweeters if that's just going to make them easier to blow, or have awful vibrations in the ~1.5 Range.
https://www.parts-express.com/Peerless-XT25SC90-04-1-Dual-Ring-Radiator-Tweeter-264-1014
https://www.parts-express.com/Peerless-XT25SC40-04-1-Ring-Radiator-XT-Tweeter-4-Ohm-264-1642
Is one of these better than the other?
They are virtually the same price.
I see that the sc-90 has a lower frequency range (800hz), lower resonant frequency, and higher Q across the board.
What differences if any are these parameters going to translate into in the car?
I'm running them on very high power. probably close to the 100w RMS they are rated.
I don't want lower frequency response from tweeters if that's just going to make them easier to blow, or have awful vibrations in the ~1.5 Range.
https://www.parts-express.com/Peerless-XT25SC90-04-1-Dual-Ring-Radiator-Tweeter-264-1014
Cone / Dome Diameter | 1" |
Cutout Diameter | 1.85 |
Tweeter Type | Soft Dome |
Power Handling (RMS) | 100 Watts |
Impedance | 4Ω |
Frequency Response | 800 to 20,000Hz |
Sensitivity | 91.1dB 2.83V/1m |
Thiele-Small Parameters | |
---|---|
Resonant Frequency (Fs) | 824.8Hz |
DC Resistance (Re) | 3.13Ω |
Voice Coil Inductance (Le) | 0.01mH |
Mechanical Q (Qms) | 7.17 |
Electromagnetic Q (Qes) | 1.07 |
Total Q (Qts) | 0.93 |
https://www.parts-express.com/Peerless-XT25SC40-04-1-Ring-Radiator-XT-Tweeter-4-Ohm-264-1642
Cone / Dome Diameter | 1" |
Cutout Diameter | 1.73 |
Tweeter Type | Soft Dome |
Power Handling (RMS) | 100 Watts |
Impedance | 4Ω |
Frequency Response | 2,500 to 20,000Hz |
Sensitivity | 91.1dB 2.83V/1m |
Thiele-Small Parameters | |
---|---|
Resonant Frequency (Fs) | 1018Hz |
DC Resistance (Re) | 3.22Ω |
Voice Coil Inductance (Le) | 0.01mH |
Mechanical Q (Qms) | 2.53 |
Electromagnetic Q (Qes) | 0.83 |
Total Q (Qts) | 0.63 |