Cayin CDT-17A

[Amerigo]

Sali

Ich bin halt immer so ungeduldig... hoffentlich kannst du bald kommen


Gruss

Amerigo

[Thargor]

Sorry ich habe den Threat nicht ganz durchgelesen.. Bitte nicht schlagen..

Hi Den,

den ganzen Thread habe ich schon mal zum schnellen lesen zusammengefasst. Einfach mal hier gucken.

Und jetzt weiter im Text mit dem kleinen Überflieger!

Gruß Thargor.

[Amerigo]

@Erzkanzler: Könntest du mir bitte sagen, wie ich diese Leuchterei beim Ein/Ausschalter entschärfen kann? Das finde ich noch viel nerviger, weil man's nicht dimmen kann.

Danke dir!


@Hifi-Tubbie: Hey Jörg, kannst du eigentlich löten?

[Erzkanzler]

Hi David,

Du redest von der blauen LED oberhalb des Hauptschalters?

[img:800:600]http://www.roehren-und-hoeren.de/phpBB/ ... 7a_bl4.jpg[/img]

Auf dem Bild links unten wo der Stecker ist, sitzt die Anschlußplatine, da sollte ein Vorwiderstand eingelötet sein. Der müsste dann vergrößert werden.

Grüße
Martin

[hifi-tubbie]

@Hifi-Tubbie: Hey Jörg, kannst du eigentlich löten?

wenn es nichts allzu kniffliges ist, kein Problem......

Kennst Du einen Laden für Elektronik-Kram (elektronische Bauteile usw.) in Züri? Habe noch keinen gefunden

Bye!

[Amerigo]

Hifi-tubbie

Der hier vielleicht: http://www.pusterla.ch/

Hab' da schon öfters Kleinkram geholt.


Amerigo

[Amerigo]

@Martin: Kann ich den Stecker da unten links auch einfach rausziehen und fertig lustig? Ich brauch die Leuchte echt nicht.


Amerigo

[Erzkanzler]

Hallo David,

Da bin ich mir nicht sicher, da sitzt nämlich auch noch der Sensor für die Fernbedienung drauf. Hab das Gerät aber gerade nicht auf, desalb kann ich es nicht mit Bestimmtheit sagen.

Grüße
Martin

[Amerigo]

Martin

Schreibst du's mir, wenn du die Kiste mal auf hast? Bin technischer Voll-Laie, drum wäre ich froh um Hilfe.


Liebe Grüsse

David

(Habe übrigens den Cayin gegen den T&A D10 laufen lassen....war toll, der Cayin hat nicht verloren).

[Erzkanzler]

Hi David,

das dauert aber leider noch ein paar Tage, bin jetzt erst mal geschäftlich die nächsten Tage im Ausland.

Grüße
Martin

[teiki arii]

Hello cayin CDT-17A owners,
here is a post in France about CDT-17A tweaking,
best regards, teiki arii.
http://www.homecinema-fr.com/forum/view ... 7a&start=0

I have choosen Siemens CCa as tubes among BVA, Telefunken "diamond", Amperex made in Holland PQ and buggleboy, CV2492 Mullard...

About AOP, we are interested for replacing original OPA604 by:
- AD825 with adaptator for DIP
- AD843
- OPA134
- OPA627
- OPA227

As I am concerned on my system and a friend's one, but we have to go into the matter closely actually: I prefer a combination of OPA627 or OPA627/AD843... You have got all the scheme based on PCM1792 on that post and are invited to bring all your experiment to help each other to improve that CDP.

NB: I use(d) FA-Gold in RCA Cable ( as well as the Rosevoix RCA, Galileo sommer 238 plus) which I think is more "analogic" between the CDP and amplifier.
FS-Gold on HF speaker and Rosevoix on LF speaker as I took off the strap...
I am buying a MingDA Preamp M7-CR to improve my system...but I don't think I would use FA-Gold RCA between mingda and A-88t as they sound to "smooth" at this place I think...

Here is the scheme (according to 00940, momois and flom):
[img:1865:716]http://www.membres.lycos.fr/sst00940/cayin2.png[/img]

So, I changed the OPA604 on #1, #2 & #3 sockets on that configuration by:
- AD843 full
- AD843 on #1 and OPA627 on #2 & #3
- OPA627 full
- OPA134 on #1 and OPA627 on #2 & #3
As we didn't touch to dualchips under red heatsinks: AD827/NE5532...
[img:642:668]http://www.membres.lycos.fr/sst00940/numeros.JPG[/img]

[2285b]

Hi teikii,

wecome aboard here, this is really a further step of tweaking the 17A. Congrats

I have choosen Siemens CCa as tubes among BVA, Telefunken "diamond", Amperex made in Holland PQ and buggleboy, CV2492 Mullard..

Can you tell us about the sound differences between those fine tubes. Some of them I´ve got also in my tubebox, but didn´t found time to give them a try I already read your posts at the french forum earlier this year

A bientôt
Axel

[teiki arii]

Hi teikii,
wecome aboard here, this is really a further step of tweaking the 17A. Congrats

I have choosen Siemens CCa as tubes among BVA, Telefunken "diamond", Amperex made in Holland PQ and buggleboy, CV2492 Mullard..

Can you tell us about the sound differences between those fine tubes. Some of them I´ve got also in my tubebox, but didn´t found time to give them a try I already read your posts at the french forum earlier this year
A bientôt
Axel

That's difficult to tell you, because it depends, I am sure, on systems: I mean ampli, speakers and cables. But, on my current system, for example, CV2492 of Mullard - which is not from mullard since they didn't make any, but amperex I suppose - it's smooth but to smooth. telefunken "diamond" E88CC are very very punchy with strong bass but they are not very detailed and not wide stage. The Amperex orange label PQ made in holland is very musical, very wide opening, detailed in the medium and high frequencies but with a lack of bass. The buggleboy has got a likely signature as the PQ orange label. I don't have any Amperex 7308 nor Mullard E188CC.
NB: all that tests have been made with original OPA604, Cayin A-88T and Lyrrs...
Siemens seems to be the best one of what I have got because the tone is very nice at any frequency with good bass and treble, and very detailed...on my system....

So, about Tweak, the best thing to do actually is - IMHO -:
- to put very good tubes first, as good as Siemens CCa
- to change the condos on output RCA/XLR - like mundorf m-cap 2,2uf 1200VDC in stead of red original WIMA 2.2uF 250VDC -
- and then change the 6 original monochips OPA604 by AD843/OPA627/OPA134/OPA227/adapted AD825....

But actually, what is very easy is to change tubes and AOP....

[teiki arii]

hello,
two AOP choices now:
- 2xAD843, 4xOPA627
- 6xOPA627 with tweaking to Mundorf capacitors on RCA plugs...
on two different systems. I am waiting my Cayin CDT-17A PCB from China....
best regards,
teiki arii.

[teiki arii]

hello,
two AOP choices now:
- 2xAD843, 4xOPA627
- 6xOPA627 with tweaking to Mundorf capacitors on RCA plugs...
on two different systems. I am waiting my Cayin CDT-17A PCB from China....
best regards,
teiki arii.

After listening and listening again, I prefer -without tweaking the capacitors-:
- Full AD843 which brings the best balance between tones, punch, basses...
- 2xOPA627/4xAD843 which brings smoothness, details, wide opening stage and amazing sound beauty...

PS: OPA627 could be the best of the bests but it lacks dramatically in bass, what a pity!!! But with the last combination, it is very nice indeed...
And according to flom, on his system, his best combination is the full OPA627 with tweaking for mundorf capacitors oil 2.2uF 1200VDC in stead of WIMA 2.2uF 250VDC....

[2285b]

Hi all fellows,

I´ve found a review of the 17A:

SPARK Cayin CDT-17A CD Player

As long as the adjustment and outfitting earnestly, I am sure that Cayin CDT-17A CD Player’s sound effect can be compared
with the highest grade digital system of more than 10,000 US dollar.

The sound was impressive at once when I first turned on the Cayin CDT-17A CD Player. It sounds like the effect of the unusual
treasure Koetsu 80 Pickup which many fans are earnestly long for. The timbre is very pure, natural, relaxed, and tireless.
Although I have a Koetsu 80 Pickup which is very expensive (8,000 US dollar ten years ago) and unwonted, I do not always use
it for the difficulties to buy new one to change the broken one. Benz micro ruby Ⅲ is always used because of the prices of 3,000
US dollar and the convenience of buying and going back factory to change the new pickups.

Cayin CDT-17A CD Player’s sound effect can not catch the whole music soul of the Koetsu 80 Pickup and even the 80 or 90
percent of it. Whether you know that the price is 26,000 US dollar only including one Koetsu 80 Pickup with air-driven turntable,
air-driven arm and full-balance pick-up amplifier (from the arm to the amplifier) which is more than 20 times than the price of the
CDT-17A. It is more convenient when we use the CDT-17A without any tension in the hart (in case of the damage of the
Pickup), so we always have a relaxed mood when we enjoy the CDT-17A with the felling that what a good sound effect with that
par instrument.

We can enjoy the felling of Hall Effect using CDT-17A with CAI QIN FOLK SONG, especially the song Follow Me To Say Love
Me. We have the felling that Timbre and consonance are rolling on the both sides of our rooftree which the Lingering musical
sound winds and the felling can be only enjoyed in some records with Koetsu Pick-up. As only for Leisureliness and lingering
charm, the assembled Cayin CDT-17A CD Player has already attained the word standard without the consideration of the price.

Air and body:
Many instruments exhibited on the Hongkong Hi-Fi show two mouth ago had all given a demonstration using voice bass big gun
of ZHAO PENG Vol 1. I found that it was not easy to play the songs of ZHAO PENG, especially the song The Moon Speaks For
My Heart. And the voice will be intermittent in case the playing is not very good. What is the result of expression using the
Cayin CDT-17A CD Player with Altec Ultra A5 MK6? The tamber is full of relaxation, easiness and bounce while two Spanish
Guitars give the introduction
Zhao Peng’s voice has a unique attraction and magnetic charm with the ample air sense and the setting off from the bottom of
the throat. Zhao Peng has sang the larruping song The Moon Speaks For My Heart with the basic skills full of the feeling of
tiredness, idleness and unconcern. Although Deng Lijun has sung the song, the song here has a unique style of the voice, and
moreover, the Right-hand Bass cello plays a deep and relaxed bass. As for the air sense and the Body full degree Cayin CDT-
17A CD has already attained the world best level.
The sound effect of the rubber leg belongs to the kinds of instantaneous slowing and weak analysis, moreover, Cayin CDT-17A
CD’s instantaneous change speed, analysis and the live sense fade because the legs’ positions do not matched the center of the gravity, believe?
So long as you change the position according to the indication of the drawing, the instantaneous change speed, analysis and
the live sense will be improved more than one time, and if the rolling crystal tacks are used for supporting the effect will be
improved twice. Frankly Cayin legs have been already much better than other products, and if the low center of gravity is placed
CDT-17A CD will Sweep other products away in domestic market.
The arrow 1 showed in the drawing indicates the all-closed Transport system which can stop the interferences of the useless
lights, electromagnetic wave and electric wave completely. The arrow 2 indicates the power supply transformer for digital and
the arrow 3 indicates the other one for analog. Arrow 3 and 4 show the soul parts of the CDT-17A CD, and the chips are BB
DAC PCM1792 (24 bit/192kHz) which are used exclusively for compact disc player in domestic market. Actually each chip is
used for only one CD, but one PCM1792 is used to get the all balanced decoding for each sound channels in order to stop the
interferences between the two channels. The weak analog signals firstly pass the lowpass including six OPA604s OPT AMP so
as to obtain the full-balance fastidiously after the D/A conversion course (showed by arrow 6, 7, 8, 9, 10, 11). Two vacuum tubes
EH 6922 are used to do the full-balance amplifying (showed by arrow 12, 13). DC is filtrated through four Wimas 2 mF
capacitances and then the alternating current sound signals are transmitted to the Pre-amplifier or amalgamated amplifier. The
two amplifications operate independently in order to avoid the interferences between the full-balance and single-ended
amplification. The two EH6922 triodes are used to single-ended amplify independently (showed by arrow 14, 15), and the
following Wimas 2 mF capacitances are used to filtrate the DC of the single ends. The two Relcap 0.4 mF (white) clung to the
Wimas are used to filtrate the UHF completely.
When you look at the CDT-17A circuitry carefully you will find out more than sixty Ribbin capacitances with the price of 400
bucks (each one 6 bucks), and May I ask how the manufacturer makes money? I recollect that Mr. Wang in Melody whose job is
radar designing while serving in the army have given me several resistances used for radar designing. The sound effect is very
good when we weld them to the electronic crossover for a test. I t is impossible to bear the price of such high-quality resistances
with the Melody’s price. Actually these were the surplus products of the military more than ten years ago, and military decided to
break them and recycle the pure silver and copper for environmental protection. The boss of Melody bought all the surplus
goods and used them to their own products. SPARK is affiliated to Aerospace industry and we can speculate that SPARK
bought the surplus high-quality resistances used for Aerospace industry to produce Hi-Fi, it just a guess and we try to get the
answer till next meet with the important official of SPARK.

Conclusion:
Cayin CDT-17A CD has the highest cost performance since there is a history of the music. Because for the appropriate price it
is well worth spending a lot of attentions exploiting the potentialities to the high point. As long as the adjustment and outfitting
earnestly, I am sure that Cayin CDT-17A CD Player’s sound effect can be compared with the highest grade digital system of
more than 10,000 US dollar.

It´s a translated chinese review. The photos relating to the text are missing, but I´ve seen them somewhere in the web, but don´t
know more where

Source

Best regards
Axel

[Erzkanzler]

Moin,

hab das mal formatiert. Ich hab es nicht geschafft diesen Bandwurm zu lesen.

Grüße
Martin

[2285b]

The photos relating to the text are missing, but I´ve seen them somewhere in the web, but don´t know more where

Found it !
http://www.hitaudio.com/reviews/200501_2.htm

[psam]

Hallo,

Ich suche 6 AD843JNZ fuer mein CD17, aber in Griechenland sie sind leider schwer su finden.
Ist es moeglich diese Op-amps durch Internet zu bestehlen?
Etwas anders. In die Analog WEB Seite es gibt mehr Op-Amps mit mehr Banwidth und hoeher Slew Rate. Sind diese besser als die 843?

Verzeihung fuer das schlechte Deutcsh,
Gruesse aus Athen,
Pete

[Mel*84]

Hallo Pete!

Try here:
http://www.analog.com/en/prod/0,2877,AD843,00.html

or look for an eBay offer!