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Old 16th May 2006, 12:31 AM   #1
congari is offline congari  Viet Nam
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Default Fostex P16 sound reflextor

I am considering to add Sound Reflextor to my Back loaded horn FE208EZ. P16 is Fostex recomendation. I wonder if the reflextor improve sound of the speaker.
Anyone has experience with it, please advise me?
Many thanks in advance.

picture of P16
http://www.madisound.com/cgi-bin/ind...=3D%25&pid=311
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Old 17th May 2010, 06:07 PM   #2
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Let me bump this thread

Here is the link to the Fostex P16 sound reflector
Dampers: P16 Sound Reflector Set (5pcs) from Madisound

I also have the FE208eZ speakers and think about getting two sets of reflectors (10 units total). Anybody has experience with them? I think it will be good to have 1-2 in the chamber and 3-4 in the mouth.
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Old 17th May 2010, 06:46 PM   #3
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Crossblade View Post
Let me bump this thread

Here is the link to the Fostex P16 sound reflector
Dampers: P16 Sound Reflector Set (5pcs) from Madisound

I also have the FE208eZ speakers and think about getting two sets of reflectors (10 units total). Anybody has experience with them? I think it will be good to have 1-2 in the chamber and 3-4 in the mouth.

IINM, didn't Terry Cain use these in at least one of his BEN series?

If so, that'd be a good enough recommendation for me to try at least once (if I ever again build a large enough BLH to fit them )

If not, it must have been a high quality "clone" that I vaguely recalling seeing somewhere
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Old 17th May 2010, 07:11 PM   #4
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I believe he did, on a semi-custom basis.
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Old 17th May 2010, 08:33 PM   #5
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Thank you Chris, Scott!

I've seen only a few guys using the reflectors and really considered them "expensive toys" ... until

.... few weeks ago when I saw Fostex use them in their very own studio monitors - discontinued ones utilizing the "funny" cone (similar to the one of the 208eZ) that I think look better (hi-end) than the contemporary models.
NF Series - Nearfield Monitors

And about at the same time, I decided that I am HAPPY with my 206eN (Dave's ones, not the new Fostex models) in the 208eZ horns, so ... I decided that the reflectors may give me improvement.

Thank you guys, I will order two sets (10 units) and hopefully the improvement will be worth it.
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Old 29th June 2010, 07:03 PM   #6
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Hello,

I've read that the reflectors are used to reduce standing waves. Is this really their purpose and how should they be used?

Should they be put in the compression chamber or in the mouth, or both? I've seen opinions that they really help when put in the mouths of double mouth Terry Cain horns but a friend of mine suggests they must be used in the chamber only and will have no effect in the mouth.
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Old 10th July 2010, 09:01 AM   #7
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A Fostex (?) plan posted on the page below, suggests that the 208eZ horn takes 5 reflectors in the mouth and 0 in the chamber.

I plan on trying this and remove all damping from the chamber and mouth, but wanted to hear your thoughts.

Thanks,
Nanko

Click the image to open in full size.
SPI sound plaza Ida / handmade speaker basic lecture (02)/ Fostex design back load phon.page
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Old 19th July 2010, 08:12 PM   #8
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bump
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Old 19th July 2010, 08:23 PM   #9
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Hi ! I don't know . The design is strange :the chamber suffocates the basket and let air escape from one side ,then the folds form some enlarging section ,which is curved at the end . Maybe some cone design may cope with the project . I still don't know what a reflector is .Can U explain better ?
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Old 19th July 2010, 08:26 PM   #10
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Quote:
Originally Posted by picowallspeaker View Post
... I still don't know what a reflector is .Can U explain better ?
Here is some info:

Click the image to open in full size.

Fostex Sound Reflector Kit 5pcs

The HP Sound Reflectors are designed to be used in folded horn enclosures to reduce standing wave problems. When properly placed, the HP Sound Reflectors will reduce resonance peaks in the higher frequencies and cut down on frequency cancellations in the lower frequencies. Made from plastic.

Dampers: P16 Sound Reflector Set (5pcs) from Madisound
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