Hello everyone, My names Rich Pabst and i just joined your forum. I would like some info on replacing the tweets on a pair or JBL CF-150 speakers. I was looking at the Morel CAT 308 soft domes and also the Audax TWO34XO tweets. I'm looking for your input as which if either of these tweets you folks think would be best or if you think something else would be better. The specs of these speakers are as follows. Please let me know what you folks think. Thank you all very much.
Rich Pabst.
CF150
3-Way Floorstanding
High Frequency Dome Transducer - 25 mm Mylar Laminate
Mid Frequency (Polymer Laminate) - 6-1/2"
Low Frequency (Polymer Laminate)- 15"
Crossover Frequencies - 850Hz/4.5kHz
Frequency Response (– 6dB) - 32Hz to 20kHz
Sensitivity (1 watt/1 meter)- 98dB
Nominal Impedance - 8 Ohms
Recommended Amplifier Power*- 10 to 325 watts
External Dimensions (H x W x D)- 35 x 17-7/8 x 18-15/16"
Weight (each) - 62 lbs (28.1 kg)
Rich Pabst.
CF150
3-Way Floorstanding
High Frequency Dome Transducer - 25 mm Mylar Laminate
Mid Frequency (Polymer Laminate) - 6-1/2"
Low Frequency (Polymer Laminate)- 15"
Crossover Frequencies - 850Hz/4.5kHz
Frequency Response (– 6dB) - 32Hz to 20kHz
Sensitivity (1 watt/1 meter)- 98dB
Nominal Impedance - 8 Ohms
Recommended Amplifier Power*- 10 to 325 watts
External Dimensions (H x W x D)- 35 x 17-7/8 x 18-15/16"
Weight (each) - 62 lbs (28.1 kg)
Here’s a link to the tech spec including crossover circuit if that helps people identify a tweeter or changes that may need to be made to the crossover to accommodate a new tweeter.
http://manuals.harman.com/JBL/HOM/Technical Sheet/CF150 ts.pdf
http://manuals.harman.com/JBL/HOM/Technical Sheet/CF150 ts.pdf
Double check the efficiency of the speaker. If it is as specified, then that tweeter is going to be far too insensitive. However, 98 dB is pretty high, and manufacturers often over-rate them.
You want a tweeter of equal, or slightly higher sensitivity to what you have.
You want a tweeter of equal, or slightly higher sensitivity to what you have.
Worth a quick read Tweeter for 98db speaker 4.5k and up, help!
They suggest the Beyma T2030 - Beyma T2030 tweeter 30W 1.5-20kHz 8Ohm | Loudspeaker freaks
May be worth a PM to see what they went with in the end.
Quick search also brought up these - Peerless by Tymphany BC25SC08-04 1" Silk Dome Neodymium Tweeter with Waveguide 4 Ohm
And these - Monacor DT-74/8 miniature HiFi dome tweeter 30Wmax 8 Ohm | Loudspeaker freaks
No idea how they will work but spl looks ok.
They suggest the Beyma T2030 - Beyma T2030 tweeter 30W 1.5-20kHz 8Ohm | Loudspeaker freaks
May be worth a PM to see what they went with in the end.
Quick search also brought up these - Peerless by Tymphany BC25SC08-04 1" Silk Dome Neodymium Tweeter with Waveguide 4 Ohm
And these - Monacor DT-74/8 miniature HiFi dome tweeter 30Wmax 8 Ohm | Loudspeaker freaks
No idea how they will work but spl looks ok.
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