I found the Bl rating of the Blueprint 1503 to be relatively low at 20 compared to other similar drivers. Does this matter in a high excursion driver like a Blueprint?
Why is the Bl of the Blueprint 1503 so low anyway?
For those who say that a BP can shake the whole house up, I'm not disagreeing with u, it's just the question of whether it can do that with smooth power and finesse.
In emailing Pat of Blueprintdrivers he replied :
" Okay. So I will concede that Bl is important. But Bl is a product of "B" (the motors strength) and "l" (the length of the wire in the gap). But If I measure a dual 8 ohm coil in series (16 ohms) then the Bl will be double of what the 4 ohm (both coils in parallel, which is internally what the 03 coil is). So should I measure it this way to have a significantly higher Bl to make the numbers look "better". This will not change the actual drivers specs or how it works at all, just the Bl product (due to the change in length of wire not the actual motors strength). The motor has plenty of strength, even with the large gaps that we run. It would be possible to tighten up the tolerences some, but we like the specs where they are and do not want them to change (which would happen with a tighter gap). "
What if the other companies of the similar drivers I've compared with the Blueprint, didn't measure a dual 8ohm coil in series, but still got a much higher Bl than the Blueprint...
Note: Still...I think the Blueprint is a fantastic driver
Why is the Bl of the Blueprint 1503 so low anyway?
For those who say that a BP can shake the whole house up, I'm not disagreeing with u, it's just the question of whether it can do that with smooth power and finesse.
In emailing Pat of Blueprintdrivers he replied :
" Okay. So I will concede that Bl is important. But Bl is a product of "B" (the motors strength) and "l" (the length of the wire in the gap). But If I measure a dual 8 ohm coil in series (16 ohms) then the Bl will be double of what the 4 ohm (both coils in parallel, which is internally what the 03 coil is). So should I measure it this way to have a significantly higher Bl to make the numbers look "better". This will not change the actual drivers specs or how it works at all, just the Bl product (due to the change in length of wire not the actual motors strength). The motor has plenty of strength, even with the large gaps that we run. It would be possible to tighten up the tolerences some, but we like the specs where they are and do not want them to change (which would happen with a tighter gap). "
What if the other companies of the similar drivers I've compared with the Blueprint, didn't measure a dual 8ohm coil in series, but still got a much higher Bl than the Blueprint...
Note: Still...I think the Blueprint is a fantastic driver