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Old 27th November 2010, 10:15 PM   #11
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I've been listening at a more reasonably loud level for the last hour and a bit. Good thing i can call this work because i should be downstairs working on A7eN.

I think these should get better with some more run in, they have about 18 hrs since treatment and had 2-300 hrs low level before, but they have been sitting since July.

Current impressions:
They don't do bad recordings any favours.
have good dynamic & tonal swing
throw a big image/soundstage, but aren't as 3D depthwise as A7eN
bass, if it is on the recording is good, not in anyway bloated, very realistic
i'll have to get the measure kit out, but either they don't go as low as say Mar-Kel70, or the Mar-Kel has a bit of mid-upper bass emphasis.

Listening now to Sunyata -- well recorded natural instruments -- captivating.

Sims put F3 in the mid-hi 50s, F10 in the mid 40s anechoic. Don & Jeff are familiar with my room.

In my room we can probably say that these are close to 9 octave, top is perhaps a bit subdued ref A7eN at the extreme top (and certainly not an FF85KeN, but its top starts rising at ~16k, bat ears complain a bit), but then along comes something that has you second guessing.

A bit of a cameleon... if it is actually on the recording it does a good job, if not then it doesn't cover for the lack.

dave

PS: sure nice having a remote for iTunes now.
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Old 27th November 2010, 11:20 PM   #12
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Quote:
Originally Posted by Woody1911a1 View Post
just arrived today .
Click the image to open in full size.
kinda disappointed in the factory cabinets . they sound kinda cardboardy . lack soundstage and the bass is nonexistent

Lol , Hi
cabinetmaker by profession and vinyl junkie after hours . after finally getting my man cave built and resurrecting my old stuff , i found this place among others .
after reading and studying for the last few weeks , thought i'd say Hi
Hi Woody,
Very surprised you rushed to judgement so quickly. Urge you to follow the running procedure as the first thing to do. Get this part wrong, you'll kill the drivers.

Running In- Alpair 7 and 12

To get the best from Alp12's, these Alps will demand the best from you. So.....

1 - Get the box design properly sorted out (could try Pencil 12 and big Pencil 12)
2 - Choose your amp and source with care
3 - Don't bother playing playing poor recordings or compressed music files, these Alps will spit them out.

This driver is designed for serious and experienced home builders, and those who undertake allot acoustic research. The challenge and the satisfaction is all part of the fun with this driver. Let's see if you're up for it.

Cheers

Mark.

PS - Pencil 12 thread: Alpair 12 - Damped Air Coupler box design

(Dave's done nice drawings on Pencil 12 and big Pencil 12)

Last edited by markaudio; 28th November 2010 at 03:12 AM. Reason: typo fix
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Old 27th November 2010, 11:27 PM   #13
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Originally Posted by planet10 View Post
Sims put F3 in the mid-hi 50s, F10 in the mid 40s anechoic.
WinISD predicts F3 - 53.5, F10 - 42ish in a 15L box, so pretty close. I used the numbers from Mark's spec sheet, of course.

jeff
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Old 27th November 2010, 11:50 PM   #14
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Dave: are you driving them w /"Dynamutt"?
I note the sens. is slightly higher than the CHR-70's.
Best, Don
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Old 28th November 2010, 01:01 AM   #15
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Originally Posted by doorman View Post
Dave: are you driving them w /"Dynamutt"?
I note the sens. is slightly higher than the CHR-70's.
Best, Don
Yes, DynaMutt... didn't bother to check whether triode or pentode -- whatever it was set to for the Mark Audio #6/CSS EL166 FF85KeN MTMs.

Your CHR measured 82.4, this pair of A12eN measured 89.15

dave
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Old 28th November 2010, 01:02 AM   #16
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Quote:
Originally Posted by vinylkid58 View Post
in a 15L box
Mar-Ken12 is 13 litre.

dave
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Old 28th November 2010, 02:05 AM   #17
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Originally Posted by markaudio View Post
Hi Woody,
Very surprised you rushed to judgement so quickly. Urge you to follow the running procedure as the first thing to do. Get this part wrong, you'll kill the drivers.
lol Mark , listening to Bonnie Raitt on my new Alpair 12's .

Click the image to open in full size.

however those factory cabinets you ship them in leave a lot to be desired

Last edited by markaudio; 28th November 2010 at 02:28 AM. Reason: fixed my earlier typo
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Old 28th November 2010, 02:23 AM   #18
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Originally Posted by Woody1911a1 View Post
lol Mark , listening to Bonnie Raitt on my new Alpair 12's .
however those factory cabinets you ship them in leave a lot to be desired
Hiya Woody,
Bonnie Raitt..... Sounds interesting? Must look at this artist up.
factory cabinets???? I'm only making the driver (not making/shipping cabs). Ya mean the boxes......
M

Last edited by markaudio; 28th November 2010 at 02:30 AM.
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Old 28th November 2010, 02:30 AM   #19
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Quote:
Originally Posted by markaudio View Post
Hiya Woody,
Bonnie Raitt..... Sounds interesting? Must look at this artist up.
factory cabinets???? I'm only making the driver (not making/shipping cabs)
M
WHAT??? Ya mean that those really are SHIPPING box's????? Hmmmmm....... back to da drawing board!!

Hey Woody - don't sweat it - we luv you new kids!!! Really!!! You can trust me on this!!!

Mark - Bonnie started out singing back-up for a guy named Roy sumpt'n - oh yeah - Roy Orbison. Then she grew up and started doing her own stuff for like the last - well it's not polite to discuss a lady's age. http://www.bonnieraitt.com/
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Last edited by c2cthomas; 28th November 2010 at 02:34 AM.
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Old 28th November 2010, 02:33 AM   #20
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wow you've never heard of bonnie raitt ? got some sweet acoustic guitar of hers coming through my alpair 12's mmmmmmm
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