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Old 22nd July 2006, 12:02 PM   #11
Klimon is offline Klimon  Belgium
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Quote:
I did reply... i hate that SPAM make's email unreliable. I've not actually even seen the Beyma, but a client in the Netherlands did the experiment and is using 5 in his Beymas. I have a couple other clients that have gotten them for these with no complaints.
Sounds fair, emails are highly unreliable sometimes. Still a weird story that my Beyma's should have a smaller voice-coil former than other Beyma's (it would surprise me if Beyma changed the design of their 8ag/n and no one knows about it)- or maybe some of the happy customers are simply mounting the PP's not on the pole-piece but on the membrane...?

Simon
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Old 22nd July 2006, 12:58 PM   #12
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More likely that Beyma changed the driver without telling anyone. Not as uncommon an occurance as people might believe.
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Old 22nd July 2006, 01:12 PM   #13
ssmith is offline ssmith  France
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I just ordered some FE126E's from Dave -- but sad to see the phase plugs and these drivers won't happen without the risk of destroying the driver...
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Old 22nd July 2006, 04:05 PM   #14
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Join the club. I'm looking forward to getting mine. Pity about the phase plugs, but the other tweaks Dave does should more than compensate.
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Old 22nd July 2006, 07:08 PM   #15
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OK. I was waiting for one of my customers to report back on his phase plug mod, but that does'nt appear to be soon. So, here's my report:

I installed a pair of Dave's PP's in my FT-1600 speakers --

Click the image to open in full size.

Click the image to open in full size.

The frequency response looks like this --

Click the image to open in full size.

Read the full Phase Plug Report

Bob
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Old 22nd July 2006, 08:29 PM   #16
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Cheers!
Just a thought from an amateur, how would it sound/measure without PP and dust cap?
I removed the dust caps on a pair of Vifa woofers a couple a years ago that solved the problem with some "shoutiness" and muddled midrange.
Regards Peter
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Old 22nd July 2006, 09:39 PM   #17
TerryO is offline TerryO  United States
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Quote:
Originally posted by peterbrorsson
Cheers!
Just a thought from an amateur, how would it sound/measure without PP and dust cap?
I removed the dust caps on a pair of Vifa woofers a couple a years ago that solved the problem with some "shoutiness" and muddled midrange.
Regards Peter
Peter,
It depends on the driver in question. What works well for one driver may be the worst thing that could be done on another.

I now wish that I had Dan Wiggins measure my speakers after the phase plugs, just to have a comparison. On the Radio Shack 40-1197's it makes a definate improvement to the sound that is not subtle. I can't recommend any of the others, because I haven't heard them, but they are a quality product and are very attractive visually.

Best Regards,
TerryO
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Old 22nd July 2006, 10:21 PM   #18
JandG is offline JandG  United States
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Default I will review these plugs soon....

My fe167e's in healthy BR monitors are under 100hrs & edge with shout & just to forward.. I am hoping these plugs will do the trick. I did the dust cap removal this mourning, 1st one went o.k., second one went very well. I know how to do it much better now.. Don't do it with alot of coffee in ya in the mourning!!!!!!!!! I know better, but no damage.. Now the wait...the hardest part!!!!!!!!!
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Old 22nd July 2006, 10:22 PM   #19
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Quote:
Originally posted by peterbrorsson
Cheers!
Just a thought from an amateur, how would it sound/measure without PP and dust cap?
I removed the dust caps on a pair of Vifa woofers a couple a years ago that solved the problem with some "shoutiness" and muddled midrange.
Regards Peter
Removing the dust cap is usually an improvement -- it changes the cavity resonance in the coice coil above the pole piece. it usually gets better when you fill the hole left behind... in the case of a woofer, wool felt works well. In a FR the harder reflective surface of a solid helps the HF as well.

dave
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Old 22nd July 2006, 10:41 PM   #20
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Default Re: I will review these plugs soon....

Quote:
Originally posted by JandG
.. Now the wait...the hardest part!!!!!!!!!
In the mail today...

dave
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