Hi Studley, yes I'm using an active xover. The DCX464 can xover about anywhere between 3-4kHz, so I play with it.
It's not like the BMS which is kind of locked in at 6.3kHz.
I have passives for comparison with the BMS, but not the B&C.
I doubt if I'll ever use another passive.....
It's not like the BMS which is kind of locked in at 6.3kHz.
I have passives for comparison with the BMS, but not the B&C.
I doubt if I'll ever use another passive.....
Hi Mark
I have been looking at the B&C DCX354. It is a bit smaller and cheaper than its bigger brother. Have you hade a look at it, any thoughts? How low in frequency would you estimate it can be used in a horn like the SYN10, compared to the DCX464?
Steffen
I have been looking at the B&C DCX354. It is a bit smaller and cheaper than its bigger brother. Have you hade a look at it, any thoughts? How low in frequency would you estimate it can be used in a horn like the SYN10, compared to the DCX464?
Steffen
In B&C's measurements of the two drivers on the same "320Hz exponential horn", the LF frequency response is nearly the same, both dropping ~24dB per octave below it's 400 Hz Fc.
The DCX464 lower impedance peak ~250Hz, the DCX354 ~310Hz on that horn.
The drivers have similar power handling and sensitivity, B&C recommends a slightly higher crossover point in the DCX354 to handle it.
The horn used and output required imposes the low frequency limit, the single section Syn10 90x60 conical rolls off at -12dB per octave ~500Hz using the DCX464:
I'd expect the DCX354 response to be pretty much the same, but have a bit less output potential due to it's reduced displacement.
That said, small cone mids have considerably more clean displacement potential in the sub 500Hz range than either co-ax, and as Mark said "simply sounds more awesome".
Art
The DCX464 lower impedance peak ~250Hz, the DCX354 ~310Hz on that horn.
The drivers have similar power handling and sensitivity, B&C recommends a slightly higher crossover point in the DCX354 to handle it.
The horn used and output required imposes the low frequency limit, the single section Syn10 90x60 conical rolls off at -12dB per octave ~500Hz using the DCX464:
I'd expect the DCX354 response to be pretty much the same, but have a bit less output potential due to it's reduced displacement.
That said, small cone mids have considerably more clean displacement potential in the sub 500Hz range than either co-ax, and as Mark said "simply sounds more awesome".
Art
Thank you Art, very nice and comprehensive answer. 🙂
I came to somewhat same conclusion, but was a bit confused they were so similar. I just forgot to check the max output of the drivers on the spec-sheat as you pointed out!
I am going to use the same cone mids as Mark and have a pair of HF1440 to start with. I Think Mark crosses at approx. 700 Hz, wondering whether the HF1440 can go that low. It´s after all a conical horn not exponential. We will see when my 80x60 horns get finished. Still stuck in other projects! Good news is that one project will free space in my living-room for the horns.
Steffen
I came to somewhat same conclusion, but was a bit confused they were so similar. I just forgot to check the max output of the drivers on the spec-sheat as you pointed out!
I am going to use the same cone mids as Mark and have a pair of HF1440 to start with. I Think Mark crosses at approx. 700 Hz, wondering whether the HF1440 can go that low. It´s after all a conical horn not exponential. We will see when my 80x60 horns get finished. Still stuck in other projects! Good news is that one project will free space in my living-room for the horns.
Steffen
Hi Steffen, I haven't looked hard at the 354, but I bet it would work fine. Personally, as long as a CD can reach 650 Hz I'm happy because that works in all kind of designs, like ordinary traps etc. I'm sure the 354 would work fine in Syn 10...i think current 464 xover is at 700Hz....
