A Subjective Blind Comparison of 3in to 5in Full Range Drivers

Which driver did you enjoy the most ?

  • Driver A

    Votes: 11 12.9%

  • Driver B

    Votes: 25 29.4%

  • Driver C

    Votes: 11 12.9%

  • Driver D

    Votes: 19 22.4%

  • Driver E

    Votes: 7 8.2%

  • Driver F

    Votes: 6 7.1%

  • Driver G

    Votes: 6 7.1%
  • Total voters
    85
  • Poll closed .
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#622
Most good "full-range" drivers have a rising response that flattens out at 15-20* off axis. This is how you set up "full-rangers". I prefer mine toe'd out as that widens the sound stage. Note that the Crowe speakers have the A7.3's in a fairly healthy wave guide that tends to band-pass the driver. I'd wondered about rear mounting the A7.3's with a round-over on the driver cutout. Hmmmm. To the shop.

Bob
 
#623
gazzagazza said:
For interest here is an Alpair 7 installed in the Pensil enclosure designed by Scottmoose. This is an in room pink noise measurement. One channel only. There is only the Alpair 7 operating. Nice LF extension and an overall tidy response.
Click to expand...

Thanks for posting the measurement. As always, one must keep the scale in mind. The range on this measurement is 120 db with 10 db increments. Rest assured that pretty much anything is going to look flat on this big a scale. A more appropriate scale that lets one pick out the problems and corresponds to our hearing thresholds is a 50 db range with 5 db increments. Look at measurements from Vifa, Scanspeak, JBL, etc, on their driver spec sheets. They all report on a 50 db range with 5 db increments.

Looking at your graph, there is at least a 5 db rise near 1 kHz followed by a 5 db downward slope in the HF below 10 kHz. A 5 db boost at 1 kHz is likely to sound hard and sort of fatiguing after a while. Could you also post a gated measurement, maybe 3-5 ft from the driver on your listening axis? That would correspond to direct sound and would tell us more.
 
#625
Here are some quick measurements I took, these are some CHN-70 boxes I threw together. Measured close up, about 10cm from the cone.
Looks similar to earlier measurements by the OP.

Probably won't use these drivers for critical applications, but they look so nice and the bass is great. Too much wonkiness for me in the upper range, even compared to the CHR-70s which are not too much more expensive.
 

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#626
SirByrd said:
Here are some quick measurements I took, these are some CHN-70 boxes I threw together. Measured close up, about 10cm from the cone.
Looks similar to earlier measurements by the OP.

Probably won't use these drivers for critical applications, but they look so nice and the bass is great. Too much wonkiness for me in the upper range, even compared to the CHR-70s which are not too much more expensive.
Click to expand...

Thanks for sharing SirByrd. It's good to see more confirmation of what I reported earlier. That is a nice looking box - is that a thick cedar board on the baffle?
 
#631
Yep. Excellent work! The driver cutout is so perfect, it looks like the driver has been photoshopped into the box.

Those pen holders in picture 4 are nice. Custom made? And is that a headphone stand in picture 5? Also diy?
 
#640
I havn't B80 and definetly will not have in near future.
I had asked the man that has B80.
In #638 is what he thinks about this 😀 .
He also believes that Visaton can send samples and thus to increase sales in the United States 🙂.
 
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