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 1 
 on: May 27, 2018, 10:17:46 AM 
Started by Cheva409 - Last post by Cheva409
Hi From Sweden !
I am a litte curious , but how many members Here
are owner to these Excellent Snell B-Minor  speakers ?
Best . Olof- Grin

 2 
 on: May 26, 2018, 02:03:52 AM 
Started by grannilsson - Last post by trinhsman
I had very good results with a recap of my E II’s.  The tech that did it really didn’t want to re do the crossovers at first because they were Snells.  I bugged him for a while and he finally agreed.  He redid everything exactly to the originals, only with a more modern cap.  This included “bundling”the caps, like in the original.  He said it was done for a reason, and he would not change it.  They came out great.  Sound cleaned up and even my wife mentioned how much better they sounded.

 3 
 on: May 23, 2018, 10:45:00 AM 
Started by grannilsson - Last post by grannilsson
Hello ,

As i see many have questions about to change the crossover in Snell speakers, especially for them who will change bipolar/electrolytic capacitors that seem to belive that they are changing to some better, polypropylen for an example, with the same value and Think Everything is OK, that is totaly wrong in many aspects, dont stop Reading now, i will explain why soon.
 
But first my recomendation  if its not broken, dont do anything with your Snell speaker, or Contact "Atomic Hifi and TV" for the right replacement Components and drivers for your Snell speaker model.

Can i upgrade my Snell speaker ?

Well i don´t Think so, if you are thinking of doing it yourself, only the AIII could be ugraded to AIIIi, Contact "Atomic Hifi and TV" and see if its still avaible, Snell has Always endeavour to use the best and most appropriate components in there products, commensurate with current knowledge, so i believe they offer excellent value, which is destroyed when interfering with the speaker in my conviction.

Electrolytic Capacitor Changes

I usually find that people who alter crossover components are not fully satisfied with the results. They find that some aspects are improved, but others made worse. A classic case of this is when a polypropylene or other very low-loss type substitutes an electrolytic capacitor.
 
We all know that polypropylene capacitors can sound inherently better, but the change in internal losses changes the response of the filter, which is designed assuming the losses of the electrolytic component. What usually happens when the low loss component is fitted is that the corners of the roll-off are sharpened, giving a peak in the combined response that can make the sound unpleasant in various ways depending on the crossover frequency.
 
One way of getting round this is to wire a small resistor in series with the capacitor to approximate the original losses.

I say approximate because the loss factor is a frequency dependent resistance. The actual value you need depends on the original capacitor loss factor and its capacitance value.


The larger the value, the lower the resistance for a given loss factor. The formula for the equivalent resistance is:

R = d / 2ðfC

Where R = resistance in ohms, d = loss factor, f = frequency in Hz and C = capacitance in farads.

Loss factor is usually expressed as a percentage at 1kHz. For a "low-loss" electrolytic such as the values between 1µF and 20µF found in tweeter circuits, d is of the order of 0.025 (loss factor of 2.5%). For values in the hundreds of microfarads it may be of the order of 0.07 or 7%. Typically therefore a good electrolytic capacitor of 5µF would have an equivalent series resistance of 0.8 Ohm. If the capacitor has a much larger resistor in series with it anyway, it's probably not worth altering.

The same argument applies if you substitute a cored inductor with an air core type. Always try to duplicate the DC resistance as well as the inductance. Sometimes inductors are deliberately wound with relatively fine wire to give a certain resistance to add damping to the circuit. Iron dust cores (sometimes called P-cores) have higher losses at higher frequencies than at lower, due to eddy current effects. Substitution of an air core, even of the same DC resistance, may give a steeper ultimate slope in the stop band that can alter the phase relationship between the two drivers. That can also mess up the overall response and skew the optimum listening angle a little.



As you can see, it's a potential minefield and difficult to get the optimum result without proper measuring facilities. Adjustment just by ear tends to give good results on limited programme material and you can usually come across some other piece that sounds less than acceptable.


The big advantage about Snell speakers was the crossover, even to funktion many years, Snell acoustics had established itself on the leading edge of technical accomplishment in the design of crossover networks essential to
the "optimum" distribution of the electric energy to the appropriate drivers so as to yield the desired sonic result.

The dividing networks used in all snell speakers is the most sophisticated and complex in the industry i ever have see(even compared with modern speakers made today).

All Snell speakers was individually adjusted by a snell Technician, while under dynamic operating conditions to the particular sonic characteristics of each of the associated drivers.
This process assures a totaly seamless transition from driver to driver and provides the correct frequency balance among the particular drivers, this was unique for Snell Acoustics to assure precise uniformity of sonic performance
in frequency response, accuracy, and imaging.
Play and enjoy   Smiley

Regards Göran



 4 
 on: May 09, 2018, 05:42:49 AM 
Started by Cheva409 - Last post by Yorunai
I think your data is good information that I'm looking for.

 5 
 on: April 22, 2018, 09:02:38 AM 
Started by Cheva409 - Last post by Cheva409
Hi All ! I am now a happy owner to a Pair
           of Snell B-Minor , yes I love them !
           now I wonder the Fuse in back which
           Elements will the Fuse protect ?
           Best Olof - Sweden.. Wink
           

 6 
 on: April 11, 2018, 07:24:10 PM 
Started by Cheva409 - Last post by Cheva409
Thanks javilha !  Smiley

 7 
 on: April 11, 2018, 05:07:19 PM 
Started by Cheva409 - Last post by javilha
The woofer may be a unit from RCF or Peerless. The mids are from Vifa and backfiring tweeter too. The front tweeter are from Audax Smiley

 8 
 on: April 11, 2018, 11:50:50 AM 
Started by Cheva409 - Last post by Cheva409
Hi All , I have interest in these Snell B-Minor speakers ,
          Now I wonder what brand have these Elements Smiley ,
          Vifa, Audax , Seas ,,,,?
          Best , Olof , Sweden...

 9 
 on: April 08, 2018, 03:44:33 AM 
Started by SJF - Last post by SJF
Hi all,

Looking for some information on the best way to replace a damaged fuse holder in a Type Ai upper unit. I picked up a nice pair awhile back and just now getting to work on them. Since it appears you can't do the replacement from the rear we'll be removing the grills which I'm loath to do since they are in pristine condition. However, whatever it takes so if there's some info on the best way to access the upper xover and fuse holder once the grills are off it would be appreciated. Owned Snells in the past but 1st pair of As so can't wait to get them in the rotation.

Thank again.

 10 
 on: March 24, 2018, 04:40:39 AM 
Started by DV1 - Last post by DV1
Original owner from no pet, non smoking home.
Speakers are in excellence condition except need re-foam!
Came with factory stands and spikes.

$200.00 or best offer.
Location:  Northern Virginia area.

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