I am putting together a econowave-esque project. Got a hold of a pair of QSC waveguides, the QSC PL-000446GP 90° x 60° waveguide.
Also working on a pair of DNA-360 compression drivers, from Denovo audio (although I believe these are B&C made...).
The question now is which pro woofer.
I believe I have narrowed the selection:
B&C 15NDL76 B&C Speakers
or the Faital Pro 15PR400 FaitalPRO | LF Loudspeakers | 15PR400
Anyone with more experience than me have any opinions on these drivers?
Thanks!
Also working on a pair of DNA-360 compression drivers, from Denovo audio (although I believe these are B&C made...).
The question now is which pro woofer.
I believe I have narrowed the selection:
B&C 15NDL76 B&C Speakers
or the Faital Pro 15PR400 FaitalPRO | LF Loudspeakers | 15PR400
Anyone with more experience than me have any opinions on these drivers?
Thanks!
Okay, then the 1" driver will be fine. If the Denovo Audio DNA-360 is indeed identical to the B&C DE 250, 1kHz crossover should work.
For the bass: The 15NDL76 is a driver designed to work in a very small volume. That means, it can't go very low, you'll end up with 75Hz in 35l (!) up to 60Hz in 80l, more is not possible. The faital 15PR400 starts with 60Hz in 60l and go down to 40Hz in 200l, to me ~45Hz in 130l looks like the best option here. So it comes down on how low you want to go and how big the enclosure may get.
For home use I would also look onto ferrite drivers since they are usually quite a bit cheaper and you don't need the weight advantage anyway.
For the bass: The 15NDL76 is a driver designed to work in a very small volume. That means, it can't go very low, you'll end up with 75Hz in 35l (!) up to 60Hz in 80l, more is not possible. The faital 15PR400 starts with 60Hz in 60l and go down to 40Hz in 200l, to me ~45Hz in 130l looks like the best option here. So it comes down on how low you want to go and how big the enclosure may get.
For home use I would also look onto ferrite drivers since they are usually quite a bit cheaper and you don't need the weight advantage anyway.
I just noticed, the faital and b&c aren't much more expensive than ferrite drivers. I'm sorry, I afraid I promised you too much. There are some alternatives, the RCF L15P530 i.e. or much cheaper but with less excursion, the Celestion TF-1530 (and steel pressed basket). I'd go for the 15PR400 or the RCF L15P530, they will go equally low and work well in the midrange too.
To complicate matters further the B&C is a very low Qts driver and as such it responds well to an EBS tuning with box of 120L tuned to Fs (37Hz).
This means it drops 6dB between 200 and 80hz and remains there down to Fs.
The drop can easily be equalized by in-room placement or a simple tone control.
This means it drops 6dB between 200 and 80hz and remains there down to Fs.
The drop can easily be equalized by in-room placement or a simple tone control.
I was going to suggest the BD15 as an alternative as it's designed more towards home use (and is what I use in my system, which is a lot like your planned one), but it looks like it's out of production.
An alternative to the 360 compression driver is the little peerless driver-
Impressive new compression driver from Peerless - Techtalk Speaker Building, Audio, Video Discussion Forum
It's absurdly good and the price is just icing on the cake. The crossover is nice and simple too, as compression drivers go.
An alternative to the 360 compression driver is the little peerless driver-
Impressive new compression driver from Peerless - Techtalk Speaker Building, Audio, Video Discussion Forum
It's absurdly good and the price is just icing on the cake. The crossover is nice and simple too, as compression drivers go.
I would not recommend the Peerless DFM-2535R00 in this case. It's a very nice driver but it does not work that well crossed over that low, it's only a 35mm VC and it got ferrofluid in it. That means, it will behave differently warm and cold, especally around the fs and that can mess up the behaviour at the xo point by a lot. I haven't seen a distortion measurement but I'm sure it's not great at 1kHz. Over 1,5kHz? Ideal for a 12", that would work I think, but 1kHz is extremely low, I wouldn't do that.
It's not as good at 1khz as at 1.5 but it's not terrible, 2 measures at 2 different SPLs are in the post here:
Impressive new compression driver from Peerless - Techtalk Speaker Building, Audio, Video Discussion Forum
Really, to me 1khz is too low for the waveguide, I run it at 1300hz. For home, I find the top end signature (which is silky smooth on this driver) to be a much bigger factor than trying to run it as low as possible. I'd rather have a small power response dip at crossover than deal with the high frequency issues you run into with larger diaphragms, but to each their own.
Impressive new compression driver from Peerless - Techtalk Speaker Building, Audio, Video Discussion Forum
Really, to me 1khz is too low for the waveguide, I run it at 1300hz. For home, I find the top end signature (which is silky smooth on this driver) to be a much bigger factor than trying to run it as low as possible. I'd rather have a small power response dip at crossover than deal with the high frequency issues you run into with larger diaphragms, but to each their own.
