Any reason I should not be considering this driver just based on specs alone? The foam surround may be problematic due to foam rot. Or is even an issue any more?
https://usspeaker.com/beyma 15BR400-1.htm
Weirdly it does not show on the Beyma website but usspeaker lists it as new.
Weirdly it does not show on the Beyma website but usspeaker lists it as new.
Don't have them... According to usspeaker they are a custom driver, hence not on Beyma website. They sim really good and in a relatively small BR enclosure.
Not really if ~50 L/50 Hz T/S max flat or the pioneer's sealed box based ~ Vas/1.44 = 190 L/Fb = Fs vented alignment suits your various performance goals.
so sealed this would have a -3db of 60hz in a 35 litre enclosure with a q of 0.707 is that right ? that seems unbelievably good
that beyma woofer was on my shortlist of drivers to go in my ref system due to its smooth FR. can be used in a 1st order system.
it is going to be a 1.4" HF driver in a 600Hz horn. hmm... i cannot simulate that driver to get that low in a sealed.
audio geek how do you work out suitability for sealed ? I use the equation somegave me on here
desired system q ÷ driver qts x driver fs give you your 3db point in a sealed enclosure .
so 0.707 ÷ whatever × whatever
to work out the box required is
q ÷ qts × the result by itself then - 1
then vas devided by that figure
gives you your volume
desired system q ÷ driver qts x driver fs give you your 3db point in a sealed enclosure .
so 0.707 ÷ whatever × whatever
to work out the box required is
q ÷ qts × the result by itself then - 1
then vas devided by that figure
gives you your volume