Audio Circle Forum > Visaton
b200 Phase Plugs from Planet10 Hifi
(FE207e) I finished
installing them. It has helped the upper end distortion quite a bit. I'm enjoying
these speakers all over again.
(FE103A) I did get over to ChrisB's
to listen to his BHorns with the phasePlugged FE103As... they are good. Last Sunday
we were complaining about a bit of chestiness in some male vocals -- today it was
completely gone. Before there would be a wish sometimes for a bit more sheen in the
top-end (and we'd hook up the super-tweeters), now i see no need. And i continue
to be quite impressed with the quantity & quality of bottem end these little
4" drivers can generate in this horn.
Two major differences we got with the phase plugs were the virtual elimination of
the last of the chestiness in male vocals (ductseal around the magnet/basket join
cleans up most of it), and an extension of the HF range of the driver.
(RS40-1354) Copied froma post
by Jeremy Epstein in this thread on the Full Range Forum (with Jeremy's encouragement)
Well, I did install a pair this morning and David asked me to jot down a few comments.
I hadn't realized I was the "first adopter" but I guess I'm used to that
by now, let Mikey try it, he'll eat ANYTHING . . . .
1) I was unable to use the "loosen the glue with heat" method due to a
lack of patience so I took an Exacto knife and cut out the dustcaps instead.
2) That's OK, I don't think I'd want to go backwards. There is a clear change for
the better in terms of clarity/speed/smoothness, which initially I worried I had
perhaps paid for with a loss of low end. However, after listening a bit more all
day today, I don't think that was the case. I think it's a win all around. And this
is not one of those "sit in the sweet spot and squint till you think you hear
something" improvements - it just immediately sounds like a driver that you
paid five times as much for. (Or more, I guess, these 40-1354's were so damn cheap!)
The rattles on tambourines sound more clearly, percussion transients seem to have
less grunge to them, vocal timbres seem clearer. It all just sounds more coherent
and less congested.
Installation (including the two minutes lost trying to use the hot air to heat the
glue) took less than 10 minutes, more like 5 really. The magnetic fixing mathod is
a snap - literally - the only part the least bit tricky was first sucking any stray
bits of paper out of the cavity which I did via the Lewinsky maneuver.
I'll report in after a few weeks of listening but I doubt very much I'll be having
any second thoughts, there is a clear improvement with the phase plugs.
3) They look snazzy too.
4) Full disclosure: I paid full price cash for two pairs of the plugs and I have
no affiliation with David except that I like him and he explains Mac computer stuff
to me VERY SLOWLY so I understand it, for which I am eternally grateful.
(RS40-1197) I had thought about
replacing my blue box 1197's, as I wasn't totally satisfied with the midrange, until
I tried Dave's "Planet 10" phase plugs and puzzlecoat application (2 coats).
For several months now I have been perfectly content with the sound I'm getting.
It wasn't bad before, Dan Wiggins of Adire Audio has measured them and they spec'd
out at plus/minus 2.5dB from 65 Hz to 15 kHz. I will say that to my ears they have
been transformed from a great bargin speaker to a great speaker, period.
So to get to the point, if you
must have Fostex drivers to replace your 1197's, please send your discards to me,
I'll try to find a use for them.
(FE207e) Wow Dave!
These phase plugs are a significant improvement over the Steve Deckert socket wrench
mod. Much more even tempered from top to bottom. Whatever seemed 'wrong' with the
original 207 driver has been eliminated, and are more involving even when you aren't
sitting in the sweet spot. Maybe the mids are more detailed, who knows, but they
are certainly worth the purchase price even if it seems like a lot of $$ when you
first look at them.
(FE206e) I received the phase
plugs Monday evening and got them in after some very nervous cutting of the dust
cap! I had hoped that I might hear some difference but was quite surprized to hear
a much smoother sound through the high's and mid's! The harshness in the human voice
range has smoothed out too. I cant believe fostex doesnt build the 206 with the phase
plug already in it!
(FE166e) I didn't want to cut
up the 166's as I thought fostex would have it right, and I'm a big advocate of the
'if it ain't broke, don't fix it' approach so it's taken me 'till tonight to pop
the plugs in, following glowing reports.
Well I must say I can't believe
the improvement. An aquaintance told me of his positive experience, so I thought
it was about time I 'butchered' mine.
The treble is so much smoother
for the mod, and the touch of sibilance the standard drivers exibit is gone. Considering
fostex' published frequency response curve looks pretty good on paper, the difference
on the ear with the plugs is remarkable. Makes me think the standard driver sounded
a little mechanical in comparison.
(Designer of the Daleks)
(FE167e) Just wanted to add my
tuppence worth on the subject. I installed a pair of Dave's phase plugs into my FE167Es
at the beginning of last week, and I've been listening whenever I've had chance.
I'll quickly stress that Dave had no idea that I was going to write this; honest
opinion only guys, and I'm impressed with what I'm hearing.
First up, I'll say that installing the things was as easy as anything I've ever done
in the practical side of DIY speakers. Took 30 minutes at the outside, and I was
taking it carefully. Fruits of a youth misspent making model kits perhaps, but it
has its benefits. Their build, fit and finish is lovely, and they do add a certain
something to the appearence of the drivers when installed.
As for their subjective effect on sound; they've brought quite a few benefits to
my ears. The 167 is inherently smooth as FR drivers go, but installing these things
has brought some real gains to the upper and midranges. Things sound somewhat more
precise, and smoother / cleaner too in the HF. A slight ring in the upper midrange
has gone completely. If there's a downside, I haven't found it. And that's with the
FE167E. I have more than a suspicion that they'll do all this and more for the 166,
which is a much less forgiving unit with that rising response. Either way, if you've
got these drivers, then you want to seriously consider getting a set of phase plugs
for them. They work. Extremely well. Anone else out there running a set of drivers
with them in? I'd be interested to see if our experiences match.
this diyAudio thread)
(FE108eSigma) Received the
phase plugs yesterday. It took about 15 minutes to fit them after I'd steadied my
It is a nice little upgrade and well worth the initial terror at the thought of taking
a scalpel to my cherished FE108E Sigmas.
The little bit of shout the drivers had has now gone The treble has smoothed out
and there seems to be much more detail in the upper midband,
An already good driver has been turned into an outstanding transducer. Why Fostex
don't fit these as standard is a mystery.
(originator of the Metronome)
Bob Brines was sent a pair of
FE167 Phase Plugs to try in his FT1600 -- his report
(FE167) Adam Walker on HiFi Wigwam