Active SBL's with Devialet amps

Posted by: Pierre Isabelle on 09 November 2017

Hello all,

 I am currently testing a Devialet D400 (actually, a pair of D200's) and I have a good old pair of Naim SBL's. I would like to try using the built-in high/low-pass filters in the D200 to run the SBL's in active mode.

Has anyone done that experiment yet? What is the correct crossover frequency for the SBL's?

Thanks a lot,

  Pierre

Posted on: 09 November 2017 by james n

Interesting experiment Pierre - 

2.7Khz and 18dB/Octave slopes were quoted for the SBL Snaxo. 

Posted on: 09 November 2017 by Huge

Linkwitz-Reily or Butterworth?

Posted on: 15 November 2017 by Pierre Isabelle

Hello, James N!

I just managed to confirm your numbers. I am going to do  the experiment very soon.

Many thanks!

   Pierre

 

 

Posted on: 16 November 2017 by james n
Pierre Isabelle posted:

Hello, James N!

I just managed to confirm your numbers. I am going to do  the experiment very soon.

Many thanks!

   Pierre 

Good luck Pierre 

Posted on: 25 November 2017 by Pierre Isabelle

Hello all,

Now reporting on the results. In a word: a huge success.

I was very lucky to have some people on the Devialet forum help me configure the two D200 for the crossover frequency and slope reported by James. I was surprised to learn that the low-pass and high-pass cutoffs need to be set differently (respectively 3.53 Kz and 2.07 Kz). 

Then it proved necessary to reduce the output level of the tweeters. After some listening, I settled for -7 db.

Driven in that way, the SBL's are simply breathtaking! Loads more detail and immediacy than with the passive crossover. I don't think I will ever go back to passive crossovers.

Thanks again for your help and interest.

  Pierre

Posted on: 25 November 2017 by james n

Good news Pierre - i'll have to pop over to the Devialet forum and catch up with your thread there. Glad it's all worked out well with your active setup 

James

Posted on: 25 November 2017 by Pierre Isabelle

Hi James:

if you are planning to run a similar experiment, let me know if I can help in any way. Good luck with it! And please let us know how it goes.

  Pierre

Posted on: 26 November 2017 by Allante93
Pierre Isabelle posted:

Hello all,

Now reporting on the results. In a word: a huge success.

I was very lucky to have some people on the Devialet forum help me configure the two D200 for the crossover frequency and slope reported by James. I was surprised to learn that the low-pass and high-pass cutoffs need to be set differently (respectively 3.53 Kz and 2.07 Kz). 

Then it proved necessary to reduce the output level of the tweeters. After some listening, I settled for -7 db.

Driven in that way, the SBL's are simply breathtaking! Loads more detail and immediacy than with the passive crossover.

{I don't think I will ever go back to passive crossovers.}

Thanks again for your help and interest.

  Pierre

Anyone reading this thread, I would advise not to consider the Active Route.

Kinda like Sugar, very Addictive!

English is not my strong suit, but in my experience, an Active System is all about the flow rate.

A natural flow of music, which is not inhibited by the internal crossover, that resides in the bias box (Speaker).

I haven't been Aktiv, in nearly a decade. 

And hear I am, 2nd System:

{Primare Pre-30 >Arcam P1 mono Blocks

Passive Vienna Acoustics Baby Grands.}

And what am I doing, still chasing that elusive Flow Rate, that is characterized by an Active System.

So Repeat, Don't Do It!

Allante93!

PS. Pierre, Enjoy Your Active System!

Posted on: 26 November 2017 by Allante93

Naim FAQ:

What is an Active System?

"This is, of course, more expensive than any passive system arrangement but we are convinced - as are many satisfied customers - that the results justify the additional expenditure. Active systems typically sound more precise, clear and controlled than passive systems. The result is music that sounds more like music and less like a hi-fi system. In part this is because active systems inherently produce less distortion than passive systems. [Sorry, for being technical but it's a fact!] "

Repeat, Sugar, tobacco, alcohol, don't do it!

Enjoy your Passive System!

Allante93!

PS. Buy your daughter a car!

1st System:

Passive Tri-Amped Briks

Next purchase, SC/Snaxo

Posted on: 28 November 2017 by james n
Pierre Isabelle posted:

Hi James:

if you are planning to run a similar experiment, let me know if I can help in any way. Good luck with it! And please let us know how it goes.

  Pierre

Thanks Pierre - i caught up with your full thread on Devialet chat - very interesting. I've no plans at the moment to go active but it's an easy option with a second 220 and suitable speakers later on if i did. 

Enjoy your rather unique setup 

James