Full Range
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that give more bass -as the door opening of the dog house is removed and this port added -simple but it works -this is not a sub however - it just digs the bass a bit lowerThis design was built and is being used with my La Scala's
image.jpgThat description is correct - but it works so well
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I use Apple TV as the interphase between IPad / iPhone and the DAC
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This photo was taken at Hobart Botanical Gardens Tasmania
It has a Monet feel to it
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Those autoformers are sold by a gentleman called Werner Jagusch. They can be either purchased off ebay, or from him directly (which might influence the price slightly). I use the same units (with 1.5db steps) and have asked him also for bass inductors. To my ears his units sound more open than either the Klipsch autoformer or solen air core inductors. I am a very satisfied customer indeed.
Thanks by the way for elaborating a bit on the Jentzen wax coils - it was a useful description.
Wolfram
It was my pleasure Wolfram - glad to help another enthusiast
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Thanks Full Range,
Its all German to me.
Here is a copy and paste of the English version for your good self and other members
( please note my autoformers are @ 1 dB increments )
A pair of autotransformers to allow the perfect adjustment of volume improvement of phase for mid-range and high-range hornspeakers.
The sound volume can be adjusted in 14 steps, each at 1,5 dB per step. Other extraction stages are available on request.
Very high quality versions wound on Double Core.
This is for all horn enthusiasts who want to get the absolute optimum out of their speakers without using resistors and volume controls.
The old horn specialists such all use autotransformers.
Klipsch corner-horn without autotransformers is unthinkable.
Unfortunately, autotransformers have been largely forgotten.
However, they have great advantages compared to conventional crossovers not only when looked at from a technical point of view (see electrical diagram) but even more so when comparing the sound quality, which improves immensely.
Horn and woofer build a homogeneous entity, becoming more coaxial, they perform together and not separately.
The aficionado/ adept will know exactly what I mean.
The old master Shindo employs autotransformers and paper in oil capacitors. He knows why!
+++++++++++++++A few explanatory notes about the autotransformer (AT)+++++++++++++++++++++++++++
The AT is used for level adaption on multiple-combination loudspeakers.
The operating mode is similar to that of a power transformer, for example from 230 to 115 volt, it thus forms a voltage divider for AC voltage. The advantage of an AT however compared to alternating current voltage dividers lies in its much lower internal resistance, below 0.1 Ohm.
Thus the electrical damping of the connected loudspeaker is considerably higher. The power factor (BxL) also takes on considerably higher data. This is a very important factor when operating horn-drivers, as the BL-faktors have a great influence on the characteristic curve.
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Full Range,
Just curious, what transformer did you use that has 1dB steps?
At first I used the original Klipsch type Autoformers
However as I was in tweaking mode I was kindly offered by another member to buy a set of them he had in storage
He said he purchased them from a guy in Germany that makes some very nice double c-core autoformers
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Ok years ago I met Paul W. Klipsch at United Audio in Libertyville, Illinois where he signed a brochure and gave me his business card.
Now listed on Ebay item number 281619742991
http://www.ebay.com/itm/281619742991?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
I do not know what anyone would be willing to pay for this so I started the auction at .99 cents.
I would bid but the cost to ship internationally is just way to expensive for what is essentially a letter
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However, the pursuit of audio "perfection" mostly involves a long list of subtle improvements that add up to monumental improvement.
Now that is something I'd agree with. I have just changed the coil placed before the woofer (from Solen to a coil would by the gentleman who also did "my" autoformers) and the change is not dramatic (some more clarity), but to my ears worth the extra money spent. I shall give those wax coils a try - but it takes about two weeks for them to be manufactured and delivered.
Wolfram
I also had to place a special order from Jentzen for the correct Mh value coils to be custom made
Took about 4,weeks from memory
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Use Google books, and read about how coils used to be made and why. Most modern coils skirt the wax because it's a pain to work with and adds cost. Most coils aren't dipped in anything, which is imbecilic. This relates to electrical and mechanical integrity. The audible difference is very subtle, hardly worth getting excited about. However, the pursuit of audio "perfection" mostly involves a long list of subtle improvements that add up to monumental improvement. Some things are less subtle than others. With that said, I'm working with Universal Transformer to have all of my parts impregnated with wax. Next in line is the 2.5mH coil, which is also getting the same wire/core/frame upgrade as the autotransformer I use.
That's pretty close to the series of events I went through Dean
A few little improvements with judicious parts selection added up to a monumental improvement
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Looking nice - Can you perhaps elaborate a bit more if you have found the move away from the Solen coils to the Jentzen wax inductors worth the investment?
Thanks - Wolfram
There is nothing standard on my Klipsch La Scalas so I had to do a little bit of experimenting
You need to look at the design as a whole and not it's individual parts
Because the flat coils were incorporated last I can inform you that the difference between the Twisted Solen and the Jentzen Flat wax coils is subtle - but to my ears noticeable
Please don't underestimate the fantastic performance of the Solens
However the main difference is the faint ripple edge of the crossover point of mid and bass disappears with the Jentzen flat wax coils
One other area of difference after installing the Jentzen Flat wax coils is in the attack of the music. Some tracks give me tingles up my spine - I have some very demanding test tracks
For music with soft passages I can't tell the difference between the two
Hope my explanation helps
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I haven't made any vendor posts to recommend them
I don't accuse any member of plagiarism
I don't overstep my welcome and I am respectful
However at times even I get a kick in the guts ( with words )
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This design was built and is being used with my La Scala's
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Alabama
One of my favourite track titles from Neil Young
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Congrats, id say your done with this system, one of the finer ones iv seen
Time to start Thinkin/Designing your next, you know you want to
If I was to do another build the only design I would consider is the Jubilee or the Volti equivalent and use an Eliptrac 240 horn
No I must not think of new builds
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Subbed
No extra sub is used Schu
However the original woofer / sub drivers have been replaced with a pair of Crites 15" cast
And the bass reflex sub box added
The Crites are rated to 26 Hz
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Another good reason to return to Brisbane.Congrats from one LS owner the another
You can pimp them up and add a bass bin just like mine if the desire is there
Upgrades are only limited by your desire and imagination
I myself don't like doing things by halves
image.jpgWere you able to measure the results of your mods, the work looks very impressive.
Are the crossovers DIY??
Thanks for the compliment Bubo
If you come back to Brisbane look me up and if the stars align you can come over for a listen
All the mods are tuned by ear. However I would dearly love to get some measurements with high quality equipment for accurate readings
Bubo yes the crossovers are DIY here is the thread to see the build from start to finish - https://community.klipsch.com/index.php?/topic/149952-a-crossover-design-on-single-exposed-board/
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Congrats from one LS owner the another
You can pimp them up and add a bass bin just like mine if the desire is there
Upgrades are only limited by your desire and imagination
I myself don't like doing things by halves
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A telephoto shot of Luna Park located just past Sydney harbour bridge
And the famous coat hanger by day and by night
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SOLD
Thank you all for your interest
FR
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Hi there
are your crossovers still available for sale ??
Thank You
Yes they are still available
Frankly I'm surprised that they haven't been snatched up yet
Cheers
FR
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Condolences to the Boxx family
He had friends far and wide
May he rest in a music filled place
From Full Range - Australia
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These well regarded ALK Crossovers are still available
And with the Australian dollar falling they look more attractive in the exchange rate for anyone interested
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Donation sent for the Boxx memorial
Kind regards and Condolences to the family from
Full Range in Australia
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Location: Brisbane Australia
Item - ALK Design AP12-600 + AP15-6000 Crossover Networks - Klipsch
Item condition: As New ( only used for approx one month )
Price: $550 AU
As the U.S. dollar is up against the AU dollar anyone interested should do a currency conversion to check a final cost
Reason for selling: No longer needed
Payment Methods: Paypal + % is the easiest method for international
Postage at buyers expense but I am willing to cover half the postage cost so the buyer won't be disadvantaged and will probably be close to the same price as local postage
No need to introduce these ALK designed and made crossover networks.
If you are into Klipsch sound, this is the best upgrade money can buy.
Can be used for for most 3-way Heritage Klipsch speakers Or a variety of other horn based speaker projects
Perfect for Cornscala builders and standard La Scala
Bought these for temporary use of 1 month while building custom crossovers
Lots of info on-line:
http://www.alkeng.com/klipsch.html
These networks are popular so get in quick
La Scala tweaks and hacks? Hit me
in Technical/Restorations
Posted
Don't Use glue on the dog box cover instead use automotive foam weather tape its self adhesive on one side and available in several thickneses
Use new driver gaskets if required
Never use any damping in the dog box
You can use wood glue for joins as required
You can use a clamping device to stop bass driver resonance vibrations
Budget allowing my recommendation is to replace the crossovers with modern alternatives
Brace the side walls with extra Ply or MDF to add thickness OR add external braces but I prefer x 4 per cabinet (2 per side) see link http://www.klipschupgrades.com/lascalabraces.shtml