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Old 1st September 2008, 06:35 AM   #1501
dent is offline dent  United Kingdom
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Default mikasa

have just finished a pair of mikasa for fostex 126e.Built exactly as per plans.They look stunning(will post pictures when I figure out how)I am now waiting for the enabled drivers to arrive from Dave at Planet 10
I have not lined the cc and envisaged only a thin layer of felt on the vertical walls facing the back of the driver.Is this about right.
Will post again with listening impressions when drivers arrive.Cant wait
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Old 1st September 2008, 12:48 PM   #1502
gychang is offline gychang  United States
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Default Re: mikasa

Quote:
Originally posted by dent
have just finished a pair of mikasa for fostex 126e.Built exactly as per plans.They look stunning(will post pictures when I figure out how)I am now waiting for the enabled drivers to arrive from Dave at Planet 10
I have not lined the cc and envisaged only a thin layer of felt on the vertical walls facing the back of the driver.Is this about right.
Will post again with listening impressions when drivers arrive.Cant wait

will look forward to pics and your impressions.

gychang
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Old 3rd September 2008, 07:57 PM   #1503
dent is offline dent  United Kingdom
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Just a taster whilst I am waiting for the drive units

Phil
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Old 13th September 2008, 10:59 PM   #1504
dent is offline dent  United Kingdom
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Now have cones fromDave at Planet 10.Nicely done mods but cannot compare with standard since I did not bother with them.Sound quality very thin at first although holographic imaging.Very,very amplifier sensitive.
Musical Fidelity bridged Typhoons hopeless,gone back to old NAD with 2 ohm resistors in series in speaker leads to drop damping factor-much better.Does all this really come out of such tiny speakers?
Am trying an ulra linear el34 valve amp tomorrow,but my feelings are they need a SET amp.
These speakers are superb to look at,stunning as they are and have the potential to be incredible .Will post further mods as they are doe or suggested.
Phil
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Old 13th September 2008, 11:26 PM   #1505
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I've also found they are very amp sensitive....... and speaker wire sensitive. Try some 18ga. solid core twisted for speaker wire. Simple and cheap to try. Of course opinions on amps and wire is as varied as opinions on wine, but I've rolled over a dozen amps with the 126EN and found any SET or SEP EL84 a wonderful combo. i.e. Almarro A205, Glow Amp 1, etc. Also, moderate powered gainclones seem to have good synergy.
Nice cabinets btw!
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Old 14th September 2008, 05:52 PM   #1506
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Very nice.

Top tip: First Watt F1 or F2. DIY build of one, all the plans are available, cost you about 100 if you shop carefully. Current source amplifiers; lifts the low end remarkably and sounds astonishing -you can improve on them, but it'll cost a whole lot more. A nice PP or SET amp will work wonders too of course.

It'll take a while for the LF to start coming in anyway as their excursion is controlled quite tightly in practice by the horn; more so than in other box types.
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Old 14th September 2008, 07:08 PM   #1507
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I second the First Watt's also. I've heard the F3 with double horns. Sounds very nice indeed.
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Old 14th September 2008, 10:41 PM   #1508
dent is offline dent  United Kingdom
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Thanks for the help guys.Tried the solid core speaker wires ,not sure of any difference,but will try again later with more running in
EL84 push pull sweeter but I still feel a SET is the way to go.
Would love to try a First Pass F1 or F2 but would not know where to start,or even get the bits.I can get a hard wired SET based on KT88's for 295 in England which seems like a good deal.
On a different note,there seems to be a fair bit of midrange coming out of the horn mouths but I have nothing in the cc other than the felt Dave supplied for the back of the magnets-should I install some felt or something.
I would also like to post some decent pictures but cannot get decent sizes even with Irfan view.Should I use an image host and post the links.If so which one.
Phil
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Old 14th September 2008, 10:51 PM   #1509
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Er, yes. The idea is to damp them to taste / your own requirements.

There shouldn't be much midrange coming out if you've built them right -the multiple bends attenuate everything over about 300Hz in the case of this particular cabinet.
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Old 15th September 2008, 02:36 AM   #1510
dent is offline dent  United Kingdom
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Will hang fire with the damping till run in.Having stuck my ear in mouths again you may be right Scottmouse,it probably is not midrange.
Am at present I am sat listening to MaryBlack,all family are in bed,so level very low.Extremely enjoyable,could listen all night but unfortunately work in the morning.
Sent circuit diagrams of First Pass F1 to friend who is electronics engineer at GCHQ who asked how many would I like,so looks like I will give it a go.I will do the metalwork,he can do the electronics.
Cannot thank you guys enough for designing these speakers,and supporting amateurs like me,I have had many thousands of pounds of equiptment over the years including Audio Research and B&W Nautilus with front ends from Linn LP!2 to Townshend Rock Reference and I am closer to audio nirvana now than ever
phil
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