calle_jr

Med raketfart till Bryssel

Recommended Posts

8 hours ago, calle_jr said:

tonkontroller

Det är nog det jag saknar mest med dagens förstärkare. Plötsligt skulle ingen ha tonkontroller under 80-talet och som en svärm flugor följde alla med ... Luxman och McIntosh var väl de stora undantagen.

 

Jag tycker tonkontrollerna "räddade" en del album som mådde bra en något justerad tonkurva. En del noterade t ex "+1/-2" på konvoluten vilket betydde lite höjd bas och sänkt diskant. På Quad 44 kunde man tilta hela frekvenskurvan och även justera brytpunkten i diskanten. Suveränt bra.

Share this post


Link to post
Share on other sites
10 hours ago, calle_jr said:

Det enda som inte är bra med att ha tonkontroller är att man kan ha svårt att låta bli att pilla på dem stup i kvarten.

 

 

När det fanns tonkontroller på min första anläggning så drog jag alltid upp basen och lät den stå kvar där...

Share this post


Link to post
Share on other sites

Well, the Aries Cerat electronics does not have tone control neither but every element allows to play with the bias.  By increasing or decreasing those, there is the possibility to tune the system sound to one's liking, more organic, more neutral, more dynamic, more closed,.... This can be done at the DAC or phono stage, preamp and power amp stages.  It allows also to obtain a coherent system voicing independent of the source being used!

Last but not least, the crossover of each horn speaker has a knob that allows to increase or decrease the midrange gain by steps of 1 dB.  Also the tweeter, that is installed on a magnetic suspension can be turned more towards or away from the listener to tune the amount of direct radiation.

 

So, just a whole other way to tune the system not only to one's room but also to your personal preference depending on the type of music you listen most to.

 

Nowadays, even the most expensive speakers are made as one robust package that cannot be altered, but this is very counterintuitive as we all know the huge influence a room and personal taste has on how a speaker and system behind should be sounding in our listening room!

Share this post


Link to post
Share on other sites
On 2018-06-09 at 20:03, Mr. D said:

I have two sets of reproducing cards and three different stabilizer cards ie voltage regulation for the audio section.

 

The first set of repro cards is based on the original architecture but with much higher-grade components: new capacitors, metal film resistors, most recent generation of transistors, special JFET, etc.

 

Original card prior upgrade:

 

L1030998_zpst7my7h5m.jpg

 

 

After the upgrade:

 

L1040082_zpswzup8t21.jpg

 

 

 

As the upgrades were performed Gradually, I can confirm there is a significant improvement Compared to the original cards: improved dynamics, reduced noise floor and much faster transients. In That respect, my technician Claims That the special military JFET is playing a key role:

 

L1040085_zps5ayife7l.jpg

 

 

The second set of repro cards is heavily modified by MTSL. A picture with the MTSL card (top) and the card modified by my tech (bottom)

 

L1040110_zpsbstqts5h.jpg

 

The MTSL card is actually «Warmer» and less analytical.

 

My tech upgraded the original stabilizer card During the initial overhaul so I can not confirm Whether there were audible improvements.

 

Before overhaul:

 

05% 20Stabilizer% 20PCB% 20Avant_zpsgpbftb7

 

After overhaul:

 

06% 20Stabilizer% 20PCB% 20Apregraves_zpsqu

 

 

I got the MTSL stabilizer card and there were significant sonic improvements Compared to the modified Studer card:

 

L1040001_zps5n2qywwx.jpg

 

When looking at the MTSL card, my technician told me That he Could design something even better and I put him on the challenge. He developed a brand new design with impressive measurements:

 

L1040122_zpsqv9rvtck.jpg

 

2_zpsjtnd7eau.jpg

 

After many trials, I came to the conclusion That MTSL repro cards work best with the MTSL stabilizer card and the Same Applies to the set from my technician.

 

I have an audiophile / warmer set (MTSL) and a more analytical / detailed set (my tech's). Do I have a preference? In absolute terms, I would say That I have a slight bias for my tech's cards though the MTSL sets is wonderful on harpsichord.   

 

Swapping cards is done in a breeze.

 

There are still few upgrades in the pipeline:

 

My technician is Currently working on a Improving the signal path in the vumeter bridge with the replacement of the switches by relays, new potentiometer, new circuit boards, etc.

 

I have improved tape sensor from MTSL That my tech will install. It is supposed to Improve the Wow and Flutter.

 

Finally, the balanced outputs will be modified by having the transformers being removed and Replaced by a Class A design. 

 

These upgrades are all interesting, especially the repro cards, the vumeter-bridge and to exchange the trafos.

Did you discuss to upgrade the power supply with your tech?

 

Share this post


Link to post
Share on other sites

Jag var i kontakt med Todor Dimitrov för 5 år sedan (10 april 2013):

Quote

Repro electronics: I can do a serious upgrade on it and the results will be substantial. MTSL is specialised in Studer upgrades and we have top recording studios among our clients. I will need you to send me the 2 repro cards (last 2 cards on the right, at the card bay below) plus the stabilizer card (first card on the left, in the same bay) Look at page 80 of the service manual, I put a link to it below. I will return them upgraded in about 1 month, then you just plug and play. This will cost euro 850. If interested,  will give more detail on the modifications - in general, they follow the Studer design but use much better passive and active components than available at the time and shorten the signal path, by deplying better but less components. Key coupling caps are replaced from electrolytics to custom-made film capacitors - a major change, not available at the time of original production.

 

Share this post


Link to post
Share on other sites
On 2018-06-13 at 18:45, calle_jr said:

 

These upgrades are all interesting, especially the reproduction cards, the vumeter-bridge and to exchange the transformers.

Did you DISCUSS to upgrade the power supply with your tech?

 

 

All the capacitors of the power supply have been upgraded. The voltage regulation of the tape transport section has been upgraded During The intial overhaul. My tech was convinced That the best improvement would be obtained with his custom-made regulation card for the audio section.

Edited by Mr. D

Share this post


Link to post
Share on other sites

Ok Guys, You were supposed to see this During your visit but it somehow got delayed. Another reason to come back. And yes, there is a second power amp so I can switch between a full solid state and a hybrid design.

 

IMG_4164_zpso25cirvi.jpg

 

IMG_4170_zpskjkxgbgt.jpg

 

 

 

 

Edited by Mr. D

Share this post


Link to post
Share on other sites

Wow...! Congratulations. :41:

 

Tenor has been a wet dream since I first saw and heard them when I worked in Montreal. Jim Fairhead had an office in the same house as " my shop" and was seen there quite often. Very nice guy and fantastic products. 

 

Here's an image from Montreal 2008 at the Son & Image festival.

 

TenorVD.jpg

 

I also see novelties between the shelves... I'm coming...:outdoor:But not today. I will spend one week in Germany including a long weekend for concerts in Gewandthaus lead by Herbert Blomstedt and Bach organ concert in Thomaskirche.

 

 

Share this post


Link to post
Share on other sites
33 minutes ago, calle_jr said:

It's not minus-K, it's not Herzan, it's not zero vibe, it's not Accurion.

What is it? : Unsure:

 

 

Stacore from Poland. 800 Kg of Steel and Slate without the electronic components. 

Share this post


Link to post
Share on other sites

 

That's interesting. Stacore, have to check it up.

 

Btw, yesterday and today I've listened to a record which I think you'd appreciate. It's four trumpet concertos by four contemporary composers (early 18th century), with music recovered from Fulda in central Germany. The recording is performed by Academy Of St Martin-in-the-Fields with the founding conductor and with Swedish trumpeter Håkan Hardenberger as soloist. He's world famous in my town and a frequent player at Malmö Live concert hall. Whenever they want to plan something special, they call Håkan.

I never really listened to trumpet concertos, but this one is very nice. Especially the Stamitz concerto, which is reconstructed by Alan Boustead and cadence by Hardenberger.

 

R-3930898-1522397361-4769.jpeg.jpg

 

Share this post


Link to post
Share on other sites
On 09/09/2018 at 8:54 AM, Bebop said:

Wow ...! Congratulations. : 41:

 

Tenor has been a wet dream since the first saw and heard them when i worked in Montreal.

 

 

 

 

The beautiful tenor 175 S stereo amp. Not as mighty as the Krell mono blocks but highly musical on solo, chamber and small orchestral pieces not forgetting the vocal ones. It was collecting dust at someone's home ... well someone who has a full Aries Cerat systems : D

 

L1040137_zpsiziaup7s.jpg

Edited by Mr. D

Share this post


Link to post
Share on other sites
20 minutes ago, Mr. D said:

 

The beautiful tenor 175 S stereo amp. Not as mighty as the Krell mono blocks but highly musical on solo, chamber and small orchestral pieces not forgetting the vocal ones. It was collecting dust at someone's home ... well someone who has a full Aries Cerat systems : D

 

L1040137_zpsiziaup7s.jpg

I really like the sound of Tenor! One of my favorite when it comes to voicing besides Absolare. Awesome!

Concratulations!

 

Calm

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now