JBL D405 2" drivers (JBL was NO HELP)

bonzoro

bonzoro

Swill Bucket
I was shopping for a set of D405's for a project and after seeing prices all over the place ($139-$250 each), I tried to figure out why the price spread. I see that the ratings for power are 100-150 watts/300 watts peak, and then I see the D405 Trio, the D405si, and the D405 Selenium so I decided to go to the JBL website and after 3-4 emails to the tech section, I quit trying. I got no response from JBL. Anybody know how many models of the 405 there really is? JBL's website shows only one version. The specs are all over the place so I'd just like to know if the $139 unit is not the same as the other versions IF there ARE different versions. Maybe it depends on the diaphrams (Maybe phenolic/kapton/titanium???) I used a pair on my Cornscala A's several years ago but they are long gone sold and don't remember if there was different versions back then. JBL's support sucks the flabby bag. I also DID notice that the drivers looked different where the wires attach. Some were down at the 6 O'clock position and another was at the 3 and 9 position.

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JBL_D405-Trio-2.jpg


The 1" Diameter is a typo from a vendor. It IS a 2"

  • Diameter : 1 Inch
  • Sensitivity : 110 dB
  • Frequency Response : 300-7000 Hz
  • Peak Power Handling : 300 Watts
  • RMS Power Handling : 150 Watts
______________________________________________________________________________________

JBL D405 (2306 x 2500).jpg

Throat diameter 2”
Impedance (ohms) 8
RMS (W) 100
Musical Program (W) 200
SPL 1W @ 1m (dB) 110
Frequency Range (-10dB) 300 to 7,000
Rec. X-over, 12dB/oct min. (Hz) 500
Voice coil diameter in (mm) 4 (100)
Magnet weight oz. (g) 2,640
 
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The TRIO seems essentially the same as the original D405 with the main difference being that the late(JBL/TRIO) model has the terminals built in as an integral part of the diaphragm hub (RPD405) and use an aluminum rear cover. Both are midrange phenolic diaphragms. My guess is that JBL didn't want users to be able to use cheaply sourced early style Selenium (RPD400) diaphragm as a replacement.

The D405Ti is essentially the same as the early style D405 except with an extended range (400 to 18,000hz) Titanium diaphragm.
 
bowtie427ss said:
The TRIO seems essentially the same as the original D405 with the main difference being that the late(JBL/TRIO) model has the terminals built in as an integral part of the diaphragm hub (RPD405) and use an aluminum rear cover. Both are midrange phenolic diaphragms. My guess is that JBL didn't want users to be able to use cheaply sourced early style Selenium (RPD400) diaphragm as a replacement.

The D405Ti is essentially the same as the early style D405 except with an extended range (400 to 18,000hz) Titanium diaphragm.
Click to expand...

So yer saying there are 3 models of the D405?
 
bowtie427ss said:
Yes.

The D405Ti with it's Titanium diaphragm is the one with significant difference in performance.
Click to expand...


Excellent. That's more info than I could get from the dealer and the JBL dudes (which was ZERO). Thanks for the help. Now I see why there is the price spread.
 
bowtie427ss said:
The TRIO seems essentially the same as the original D405 with the main difference being that the late(JBL/TRIO) model has the terminals built in as an integral part of the diaphragm hub (RPD405) and use an aluminum rear cover. Both are midrange phenolic diaphragms. My guess is that JBL didn't want users to be able to use cheaply sourced early style Selenium (RPD400) diaphragm as a replacement.

The D405Ti is essentially the same as the early style D405 except with an extended range (400 to 18,000hz) Titanium diaphragm.
Click to expand...

Yep, when those TRIO drivers blow up- I had usually recommend people just go out and find some of the early Selenium D405 drivers. Or, at least the back caps from the Selenium drivers- as IIRC, they will bolt right up onto the TRIO magnet assemblies.

However, it now looks like there are readily available TRIO diaphragms for not much more than the original D405 diaphragms (something like $69 each, compared to $49 each, or so, depending on where you look). So, might as well just get those, now...

Regards,
Gordon.
 
Check out the PRV D2200Ph. On the right horn, it will go from 400Hz~8kHz with no EQ.
 
THD+N said:
Check out the PRV D2200Ph. On the right horn, it will go from 400Hz~8kHz with no EQ.
Click to expand...


I wonder if they sound as cheap as their price. Also, this part of the write-up would scare me off. If I was advertising my speakers, here is what I WOULDN'T say.

High output mobile audio enthusiasts choose the PRV Audio D2200Ph for extreme SPL car audio competitions in South America, while DJs use it in high SPL speaker cabinets for entertaining crowds that number in the thousands.
 
Well if you can get past your first impression, do more research here on the Klipsch Korner forum and see what you have been missing.
 
Ok. Just trying to give you an alternative. Due diligence does pay off...
bonzoro said:
I wasn't really looking for an alt..... I was just trying to finger out the differences of the 3 D405 models the factory used (uses).
Click to expand...
Oh ok. I apologize for butting in.
 
bonzoro said:
AND the ProLine, 5 or 6 different models of the D405....... I don't get it


Click to expand...


Didn't realize they used Ferro Fluid. Not many drivers do. Epicure inverted dome tweeters are one of the only others I have heard about.

Moreover, the gap has set inside a fluid
magnetic (ferrosound ), which provides better balance and excellent
heat dissipation of the coil.
 
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