I wonder what i missed while i was sleeping?!?!?
Our common friend tried to disturb the thread once more - and someone else sent him for a vacation in a nuclear plant
Can definitely do that =)
GKH,
Yes, I should be able to make the 15LB100 work in 30hz tuned cabinet .. . The cabinet will likely be larger than what we were looking at for the 12s but it will work (with a steep "rising" response) in the current Super Planar 8th configuration
I have been dabbling with a method which tames the rising response in such a situation and also allows for a reduction in cabinet size ..... Just a modification to the Super Planar 8th .... I plan to post about it soon . .
Hahaha!! Ok , now i remember.... I did see that before it was taken down ..... I specifically remember that someone mentioned the name of an infamous Japanese nuclear power plant but had misspelled it
Matthew,
the 15LB100 might be what Luca is looking for? If yes, give me the necessary dimensions and I'd gladly provide the drawing
GKH,
Yes, I should be able to make the 15LB100 work in 30hz tuned cabinet .. . The cabinet will likely be larger than what we were looking at for the 12s but it will work (with a steep "rising" response) in the current Super Planar 8th configuration
I have been dabbling with a method which tames the rising response in such a situation and also allows for a reduction in cabinet size ..... Just a modification to the Super Planar 8th .... I plan to post about it soon . .
Our common friend tried to disturb the thread once more - and someone else sent him for a vacation in a nuclear plant
Hahaha!! Ok , now i remember.... I did see that before it was taken down ..... I specifically remember that someone mentioned the name of an infamous Japanese nuclear power plant but had misspelled it
Last edited:
GKH,
Yes, I should be able to make the 15LB100 work in 30hz tuned cabinet .. . The cabinet will likely be larger than what we were looking at for the 12s but it will work (with a rising response) in the current Super Planar 8th configuration
I have been working on a method to tame the rising response in such a situation and also reduce cabinet size ..... Just a modification to the Super Planar 8th .... I plan to post about it soon . .
I'm standing by...
Hahaha!! Ok , now i remember.... I did see that before it was taken down ..... I specifically remember that someone mentioned the name of an infamous Japanese nuclear power plant but had misspelled it
and Gerald , thank you for offering to make the drawing! I might take you up on that!
My offer is not entirely altruistic
Another good relative inexpensive candidate is the Oberton 15XB700. I have measured about 5 with DATS2 and they are spot on with t/s parameters (give or take a few 10ths of a percent) If you do not like ferrite there is also the neodymium version There is also the 15XB500 but is more reflex loaded (But for about 100€) pretty cheap
the standards are different from modern ratings
Luca ,
The Xmax is very conservatively rated .... It has a lot to do with how the Xmax is calculated .... If we look at the same formula that big brands like B&C, RCF and 18sound are using and apply it to the voicecoil length and magnetic gap depth provided we end up with a much higher Xmax figure for the 15LB100 ... We find out that this driver is actually very competitive It would be nice to measure the Xmax using the 10% THD standard such as Eminence uses but we don't have the equipment for that ...
Here is what we were able to put together for the 15LB100:
Although the 15LB100 is much happier in a 40hz tuned cabinet , it can also be forced to work in a 30hz tuned cabinet ..... The cabinet will be larger than what would be required for a strong 12 , but the 15LB100 does produce some decent performance for the price ..
Luca ,
The Xmax is very conservatively rated .... It has a lot to do with how the Xmax is calculated .... If we look at the same formula that big brands like B&C, RCF and 18sound are using and apply it to the voicecoil length and magnetic gap depth provided we end up with a much higher Xmax figure for the 15LB100 ... We find out that this driver is actually very competitive
It would be nice to measure the Xmax using the 10% THD standard such as Eminence uses but we don't have the equipment for that ... Here is what we were able to put together for the 15LB100:
Although the 15LB100 is much happier in a 40hz tuned cabinet , it can also be forced to work in a 30hz tuned cabinet ..... The cabinet will be larger than what would be required for a strong 12 , but the 15LB100 does produce some decent performance for the price ..