Hello
am in the process of putting together a K Horn using JBL drivers 😱
I have a pair of 2446J for the mid range however this is 16 ohm which may require judicious use of L-Pads.
Does anyone know if these units could be converted to the 2446H 8 ohm spec ?
Is it just a voice coil exchange of some sort ?
am in the process of putting together a K Horn using JBL drivers 😱
I have a pair of 2446J for the mid range however this is 16 ohm which may require judicious use of L-Pads.
Does anyone know if these units could be converted to the 2446H 8 ohm spec ?
Is it just a voice coil exchange of some sort ?
I will be needing to design and build some crossovers and figured it might be a little easier if all drivers were at same Ohm rating ?
I am learning so if this should not be a concern then that would be great.
I assume the output level is the only concern ?
I am learning so if this should not be a concern then that would be great.
I assume the output level is the only concern ?
Yes, that is right.
Of course the crossover component values need to work with 16 ohms, but this is easy to do.
Are you going to sim?
Of course the crossover component values need to work with 16 ohms, but this is easy to do.
Are you going to sim?
Originally, I had planned on a Paragon build and had secured all the drivers to complete that. Unfortunately some challenges with the curved front panel has meant that project is now on hold.
So now I am looking to use the drivers in a horn project.I have plans for the Speakerlab K horn and I am currently having the dxf files being setup to cut all the parts.
I am experimenting a bit as I have no idea if the paragon crossover design will work with the K Horns.
So to answer am I going to "sim" it is kinda tough to answer. Based on the info - should I ?
So now I am looking to use the drivers in a horn project.I have plans for the Speakerlab K horn and I am currently having the dxf files being setup to cut all the parts.
I am experimenting a bit as I have no idea if the paragon crossover design will work with the K Horns.
So to answer am I going to "sim" it is kinda tough to answer. Based on the info - should I ?
There are some guesses you can make for yourself. Is the 16 ohm driver the same sensitivity as the original 8 ohm driver? Can you compensate the difference in the crossover by adjusting resistance?
Apart from this, you can double inductances and halve capacitances from the 8 ohm crossover to make it suitable for the 16.
After this it comes down to more subtle details.
Apart from this, you can double inductances and halve capacitances from the 8 ohm crossover to make it suitable for the 16.
After this it comes down to more subtle details.
If you decide to do to 8 ohms you can just swap out the diaphragm assembly. If you do go that route look for an SL version. These are coated with aguaplas and are the smoothest sounding versions used in the newer large format compression drivers.
Rob 🙂
Rob 🙂
would something like this be just plug and play ? - JBL Factory Speaker Replacement Horn Diaphragm 2446, 2447, 2450, 2451, D8R2450
ndmunro,
yes, this diaphragm from SS will convert your drivers to 8 ohms.
BUT: What are the sensitivities of all drivers involved? Do you have the xover network schematics available? I'm asking you 'cause often there are ohmic voltage dividers (apart from the L pads) to be found in JBL network schematics (e.g. see 4430, 4435 studio monitors). Adjusting these resistors in order to achieve the same power at the driver terminals while keeping the impedance as seen by the LC filter constant might do the job as well as replacing the dias.
Best regards!
yes, this diaphragm from SS will convert your drivers to 8 ohms.
BUT: What are the sensitivities of all drivers involved? Do you have the xover network schematics available? I'm asking you 'cause often there are ohmic voltage dividers (apart from the L pads) to be found in JBL network schematics (e.g. see 4430, 4435 studio monitors). Adjusting these resistors in order to achieve the same power at the driver terminals while keeping the impedance as seen by the LC filter constant might do the job as well as replacing the dias.
Best regards!
Kay Pirinha,
I do have a crossover diagram but it was for the Paragon but it does use the 16 Ohm.
Speaker sensitivities are as follows:
2402H bullet - 8ohm - 110db@1W
2255H woofer - 8 ohm - 93db@1W
2446J mid - 16ohm - 111db@1W
All things considered looks pretty close.
I do have a crossover diagram but it was for the Paragon but it does use the 16 Ohm.
Speaker sensitivities are as follows:
2402H bullet - 8ohm - 110db@1W
2255H woofer - 8 ohm - 93db@1W
2446J mid - 16ohm - 111db@1W
All things considered looks pretty close.