Hi, a pair of questions, if I may:
-this coax CD have some shorting ring? the datasheet say nothing about it
-there is some horn (from B&C or other brand) that on pair with DCX464 can produce a similar curve like that one showed on the datasheet? Even a curve that roll on around 7-800Hz might be ok...
thanks in advance (..and sorry for my bad english :/)
-this coax CD have some shorting ring? the datasheet say nothing about it
-there is some horn (from B&C or other brand) that on pair with DCX464 can produce a similar curve like that one showed on the datasheet? Even a curve that roll on around 7-800Hz might be ok...
thanks in advance (..and sorry for my bad english :/)
Hey Alessandro,
The coax uses a copper cap on the HF section only, we found no benefit to using any shorting device on the MF section. Regarding the horn, I am unaware of any off the shelf horn that can go to 300Hz. We use two large horns in testing and measurement at B&C, the one used for the data sheet is attached.
Attachments
B&C needs a more aggressive and more powerful marketing team.... for speaker motors, a copper cap is GOLDEN BABY!
I remember in the "Mad Men" TV series the marketing team was able to sell cigarettes by using the phrase "It's toasted" to describe the tobacco
Personally, I now think less of the DCX464 sound quality. Go figure.
I've built plenty of 2-ways and 3-ways without a copper cap or shorting ring on the midrange, because it wasn't worth the expense.
For instance, if I'm crossing over from a smaller midrange to a tweeter, I don't need a shorting ring because I'm just not playing the midrange very high.
I imagine B&C used a similar decision process in their design.
If you're trying to get a 12" or a 15" to play up to 2khz, it makes sense, but for a 5" or a 6", it's less compelling.
For instance, if I'm crossing over from a smaller midrange to a tweeter, I don't need a shorting ring because I'm just not playing the midrange very high.
I imagine B&C used a similar decision process in their design.
If you're trying to get a 12" or a 15" to play up to 2khz, it makes sense, but for a 5" or a 6", it's less compelling.
Sorry, this mean better quality or worse? Cant get what you mean in your last line.
Thanks
And to expand on this, a neo magnet will inherently have lower inductance than a ferrite magnet system. A copper cap simply may not be needed in the application.
So do you think like .1 watts or 70 or don't you think?I guess it will be low for - ahem - low power applications !
Regards
Charles
Each halving of frequency increases excursion by 4. If it can handle 100w @ 400hz, it will handle 25w @ 200hz if your horn is big enough.
I was just refering to the question that was posed in a little strange way. The maxuimum power allowed will be the same , wheter used in a low power application or in a high power application. 
If there is no derating information for a desired frequency then you could calculate the DC power needed in order to reach X-max and then you are definitley on the safe side.
Edit: I was just checking the datasheet. Unfortunatley they don't mention compliance, x-max and BL factor in the data sheet which would allow a coarse estimation of what I mentioned.
Regards
Charles
If there is no derating information for a desired frequency then you could calculate the DC power needed in order to reach X-max and then you are definitley on the safe side.
Edit: I was just checking the datasheet. Unfortunatley they don't mention compliance, x-max and BL factor in the data sheet which would allow a coarse estimation of what I mentioned.
Regards
Charles
Last edited: