Wide range Compression driver: Radian 850PB or else ?

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#3
The BMS coaxial compression drivers are a popular choice. B&C also has a coaxial driver.

The Radian 951NeoBe looks like the closest competitor to the BMS. Some say it's slightly more detailed in the midrange. Then there's always JBL.
 
#4
JonBocani said:
Looking for a good 2'' CD to be crossed low (no more than 500hz) while being able to go high as well if EQd

So far, i found the Radian 950/850PB with their 5mm shim, but is there any other options ?

thanks
Jon
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Jon,

That would be a .5 shim, the coil would be out of the gap and no HF output with a 5mm shim 😉.

Most 4" voice coil and many 3" voice coil drivers can do 500 Hz on horns capable of low loading.

By "no more than 500hz" do you mean no lower than 500 Hz?
What horn are you using?
What SPL level are you looking for?

Art
 
#7
TAD 4001 or 4002 without the 1.5" adapter will give you the widest range with the best sound. It will require a large horn ad will most likely beam in the treble.

There are better sounding drivers for less money if you use a treble horn.
 
#9
POOH said:
TAD 4001 or 4002 without the 1.5" adapter will give you the widest range with the best sound. It will require a large horn ad will most likely beam in the treble.

There are better sounding drivers for less money if you use a treble horn.
Click to expand...

To clarify what I think you mean to say... the TAD 4002 (only one I can speak of since I own several of them) has a 1 1/2" throat "without" the adapter. Using the adapter will allow you to mate it with a 2" horn (which is what I'm doing)

I'm crossing to it in a 2-way horn format. Crossover values are:

Bass bin crossing at 450Hz L/R 24
HF horn (the TAD 4002) crossing at 400 Hz, L/R 24

I personally don't know why there are two different electrical crossover points. I'm guessing it has to do with the acoustic crossover point

Regardless of that, this is for a residential application. TAD is attached to a horn that is approximately 36" wide by (I'm trying to remember) maybe 20" tall. I'm probably wrong.

None the less, It will NOT leave you wanting for more volume than it can produce. It will either force you to turn it down, leave the room or, go deaf. Point being, for residential use it will have more than enough output for you.

Just make sure you get/use the original BE diaphragms.
 
#10
Coytee said:
To clarify what I think you mean to say... the TAD 4002 (only one I can speak of since I own several of them) has a 1 1/2" throat "without" the adapter. Using the adapter will allow you to mate it with a 2" horn (which is what I'm doing)


Just make sure you get/use the original BE diaphragms.
Click to expand...

Yes, "with the adapter" = 2" throat - Nice size horns 🙂
 
#12
hasselbaink said:
As I remember it, the DH1A is dead as a doornail @ 9 kHz

best,Kris
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Kris,

Depends on the horn. On a constant directivity horn like the EVHP9040, 9kHz is down about 10 dB from 1kHz. The native response is like any of the usual high quality HF drivers.

Below is a comparison of the EV DH1A to a BMS 4552 on the same narrow conical horn, as you can see, the DH1A has slightly more sensitivity at 9kHz, but 12 dB more output at 400 Hz. The upper peak in the response of the DH1A is at 13.36 kHz, the upper peak on the BMS 4552 is at 17.5kHz.

Art
 

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