New 15" full range- FANE

I still use it almost every day. For what it is, I really like it. I have adjusted the sound to be good from about 3 to 17 degrees or so, while avoiding the 0-3 degrees in normal listening. I advise you to not blindly optimalize for 0 degrees, that makes for a very limited experience IMO.

You cannot have everything, it's definitely value for money but it's not "Ultimate" in any way.
 

jccart

Member
2014-12-24 9:49 pm
I still use it almost every day. For what it is, I really like it. I have adjusted the sound to be good from about 3 to 17 degrees or so, while avoiding the 0-3 degrees in normal listening. I advise you to not blindly optimalize for 0 degrees, that makes for a very limited experience IMO.

You cannot have everything, it's definitely value for money but it's not "Ultimate" in any way.
this is the main issue for me too hot directly on axis and vary varied if you walk around the room or stand up from sitting . I'm experimenting with ways to try and solve this . what type of box are you using with this driver yourself . although maybe not the ultimate they do have a noticeably relaxed or effortless sound that's got me really interested in high efficiency speakers
 
FWIW/FYI: I've messed with wide range/'FR' drivers up to 15" and always wound up toeing them in to cross in front of me a varying amount at ear height with up higher aimed down often a better overall choice, though when there was an odd # seating positions, i.e. 3 wide sofa/whatever spacing, aiming the left channel to right seat, etc., always worked best overall.
 
  • Thank You
Reactions: 1 user
when there was an odd # seating positions, i.e. 3 wide sofa/whatever spacing, aiming the left channel to right seat, etc., always worked best overall.
This is more or less what I ended up with as well.

what type of box are you using with this driver
Closed volume of about 80 liters, I'm using something else for bass. Crossover is offset 2nd order Bessel centered around 200hz or so.
 
  • Thank You
Reactions: 1 user
One day I will try to put the 15 inch Fanes into a reflex box EQed to flat with a dsp. But with a resistor of eight to 15 Ohms before the driver. It will make the amplifier working inbetween voltage drive and current drive. This can help in bass and treble and reduces distortion at all frequencies.

I have a 13cm fullrange driver in a small vented box. I tried here first time putting a simple resistor of nine ohms before that 8 ohm driver. And it helped a lot to bring it further in terms of hifi sound with much lower distortion clearly audible by ear. As the driver was a cheap one with no shorting copper ring at the pole piece it now sounds like it has one.

Second reason for trying this: I did that because it is an older amplifer from the eighties and the loudness knob does not work well in the beginning i.e. the headroom while listening not loud. With the resistor in work I have to move the loudness knob in a region where it works much better.

However I am impressed by the merits of current drive as described by Esa Merilainen on his website describing the "resistor method". As he told me in an email current drive with voltage amplifiers just begins to work if your resistor is approximately at least like the ohms of the voice coil. More is better but first effects take part.

The small box with the 13cm driver only profits of the resistor in the bass too, because it is a bass shy driver. So not always you have to think about bringing the Q of the driver down when trying the simple resistor method.

I could even think of trying the resistor method with some EQing like:
12 Ohms before the driver paralled with 2,2mfd and 5 ohms in series in order to bring the highs up even more if needed by the loudspeaker. This is an idea for experiments.

The small box has two 18 Ohms resistors in parallel. The fullrange driver is not original RFT, it is an Eagle L022B Mk2. I covered it with on the front with aluminium. This helps making the cone stiff and can reduce resonances significantly.
 

Attachments

  • IMG_20220721_100849.jpg
    IMG_20220721_100849.jpg
    163.7 KB · Views: 20
  • IMG_20220721_100919.jpg
    IMG_20220721_100919.jpg
    183.2 KB · Views: 18
  • IMG_20220721_101008.jpg
    IMG_20220721_101008.jpg
    461 KB · Views: 16
  • IMG_20220721_101031.jpg
    IMG_20220721_101031.jpg
    408.6 KB · Views: 20