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Old 11th August 2010, 09:47 AM   #1301
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As ever, they look (and I'll bet sound) really good.

Is it running as a 1.5 way, or are both drivers running full-range?
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Old 11th August 2010, 11:29 AM   #1302
Toppsy is offline Toppsy  United Kingdom
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Chris,

Both drivers are driven full range and wired in series.

I did query with Scottmoose whether it would be worth running the lower driver as a bass unit with the upper full range as he suggests on some of his Woden designs for twin MA drivers but he advised against it, and who am I to argue.

The only downside to this design is the need to drive the speakers with little more power than my 7W 300b SE amps can deliver but with this amp they still sound rather good (well better than good) but, they simply sound stunning with my GM70 SE monoblocs. But then they would with having 35W SET on tap, hey.

However the exercise was to make a good sounding speaker for SS amplification and with a old Rotel 25W SS amp they are very good indeed. Bass with the SS amp is a little tighter as one would expect but they loose a little of the SET magic.

My mate Chris (Stratmangler) is coming over later in the week with his NAD SS amp - which is far better than the Rotel - so I am expecting better things with this amp.
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Old 11th August 2010, 03:15 PM   #1303
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Originally Posted by Toppsy View Post
Thought I'd share my latest build.

My Son and his grilfriend have just moved into a apartment and set up house together so he needed a new pair of speakers. As he has most (if not all) his music stored on his Mac I needed a speaker more suited to SS amplification and decided as I had 2-pr the MA A10 driver going spare a nice Fonken-Style floorstander type cabinet would be ideal. This driver suits better the type of music my Son listens to over the Fostex FE167eN that was my second choice driver.

So after talking with DaveD (Planet10) they are based on 2 Mar-Kel10, stacked and merged into a single volume. Adjusted the spacing of the slots, and merged some together (merging the 6 slots/side into 4 slots). Stuck onto a false base. They are skinned in Oak veneer.

I must say they sound really good indeed with powerful solid bass and good transiant attack. Not sure if DaveD will be featuring this design as part of his Plans offerings. We'll have to wait and see but they are that good I'm loathe to part with them this coming weekend.

They look fab!
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Old 11th August 2010, 03:30 PM   #1304
doorman is offline doorman  Canada
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Nice job, Toppsy!
I recently built a pair of the same Fonkens, but with 167 EnABled drivers.
I really like how the bass output is solid and well integrated with 1 driver per side! - yours won't be at all bass shy!!
Great looking speakers!
Don
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Old 11th August 2010, 04:38 PM   #1305
Toppsy is offline Toppsy  United Kingdom
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Thanks guys for the compliments.

Don,
Bass shy these are certainly not and this was a design brief from my son, but the MA drivers do require about half the internal cabinet volume that the Fostex FE167 requires hence they are based on 2 Mar-kel10 married into one cabinet to give me a similar sized floorstander as the original FE167 Fonkens.

I also have built the original FE167eN floorstanders and (I think) was one of the beta test builds. They are a very nice speaker but to my ears the bass though tight and accurate lacks a little depth in comparison. I also find they are improved with a supertweeter cutting in at around 10K. But some folks differ and prefer them without. And I was not about to pass these on to my son as I like them too much. The wife also loves them. Below is a photo of my original build fonken floorstanders with the FE167eN.
Attached Images
File Type: jpg 167Fonken10.jpg (184.6 KB, 2633 views)
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Old 11th August 2010, 05:06 PM   #1306
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...they are that good I'm loathe to part with them this coming weekend.


dave

PS: plans for these will be added.
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Old 11th August 2010, 05:10 PM   #1307
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Yup, those are they!
My previous speakers were a pair of "Frugel-Horns", which I liked a lot, but found that (for me) they req'd a sub, which my wife disliked "another black box"??.
The Fonkens make the sub expendable, but your build has me intrigued!!
My 60 something ears probably wouldn't benefit from a super tweeter, but---
Again nice job!
Don
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Old 11th August 2010, 05:59 PM   #1308
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Toppsy, Your son's a lucky lad!

Beautiful workmanship (or, insert suitable political correctism... "work-person-ship"?), but more than that, nice job of innovating!
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Old 11th August 2010, 08:01 PM   #1309
doorman is offline doorman  Canada
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Quote:
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Click the image to open in full size.
Thanks, Dave: I've since re-veneered these in cherry--much more presentable!!
(since managed to figure out how to post pics, but can't seem to enlarge them to a viewable size---yet--!)
Don
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Old 11th August 2010, 09:46 PM   #1310
Toppsy is offline Toppsy  United Kingdom
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Nicely built Fonkens there Don.

I too am just turned 60, but do find I can detect the difference in sound from my FE167 ENABLed Fonkens with T90A supertweeters via a L-Pad and 1.5uF cap and without. It just adds extra ambiance and air to the mix and higher frequencies and strangely reinforces the bass. Perhaps younger ears would find it too much but as we get older any help in the HF is appreciated. at least by me anyway. You have to do the experiment to convince yourself it is not just snake-oil talk. They really do add something to the mix, especially with the FE167e drivers that starts to fall off at 10KHz. I know DaveD (Planet10) however, doesn't find the need for the supertweeter with his FE167 Fonkens. Perhaps it's a European thing
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