Search found 2330 matches

by roberto
Tue Sep 26, 2023 3:26 pm
Forum: Amplifiers
Topic: CJ LP70S
Replies: 32
Views: 4682

Re: CJ LP70S

The 6550s pin array is different to the EL34s. They are NOT direct interchangeable. The difference in not only the plate bias current. Is the pin array too. Look for the pin out for each tube. You will see the difference. the third grid on the 6550 is connected to the cathode, pin no. 8 and the thir...
by roberto
Tue Sep 26, 2023 5:21 am
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

As I always keep saying: let your ears decide...and still, no matter what, the sound of the tubes are the final winner for my ears. Yes, there are some SS well crafted and I do like their sound, I must get accustomed to the way that they sing. The bass usually is much better on SS, I admit this. But...
by roberto
Sun Sep 24, 2023 10:22 pm
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

Here are another web addresses for the tung sol KT120... https:/www.banzaimusic.com/Tungsol-KT120.html https://iconaudio.com/tungsol-kt120-kt120 http://www.granada-audio.com/index.php?route=product/product&product_id=202 https://www.laboratoriomusicale.net/en/tung-sol-kt120-platinum-selectedhttp...
by roberto
Sun Sep 24, 2023 4:52 pm
Forum: Amplifiers
Topic: Right fuses for MF2300? Frustrated with CJ lack of help
Replies: 9
Views: 2295

Re: Right fuses for MF2300? Frustrated with CJ lack of help

Here is what the manual says regarding the fuses: Fuses: There are 5 fuses in the MF2000 Series Amplifiers. One is the ac power line (mains) fuse. It is located in a fuse holder near the power cable. The other four fuses are in the main DC power supplies. On the MF2200 and MF2300, these are located ...
by roberto
Sat Sep 23, 2023 1:27 pm
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

Hola Chicos, For those who have the KT120, now are at $100.00 each. Here is the link:https://upscaleaudio.com/products/tung-sol-kt120 Regarding the tube sound, the tube sound offers the real thing with much naturalness than any other kind of electronics. Easy to service and very easy for our ears. H...
by roberto
Fri Sep 22, 2023 4:59 pm
Forum: Amplifiers
Topic: Premier 11 v. Classic 120
Replies: 12
Views: 5937

Re: Premier 11 v. Classic 120

Hola mstrshikadance, All I can say is that my Classic One Twenty SE surpassed all my expectations regarding the quality built, quality sound and lifespan. I never had any issues with it, just pleasure and a very enjoyable power amplifier. Previously I had a lot of different power amplifiers and bran...
by roberto
Fri Sep 22, 2023 2:54 am
Forum: Amplifiers
Topic: Bias lights not working on LP70S
Replies: 11
Views: 2107

Re: Bias lights not working on LP70S

The posts where the screws of the PCB are screwed, must be retighten at the chassis.
by roberto
Thu Sep 21, 2023 10:52 am
Forum: Amplifiers
Topic: Bias lights not working on LP70S
Replies: 11
Views: 2107

Re: Bias lights not working on LP70S

Well, the trick is to have the four LEDs into their position, wiggling a little bit the PCB and then their screws. If you have unsteady PCB, this means that the secured screws are loose and need a retighten all of them. NEVER USE FORCE TO PUT THE LEDS BACK INTO THEIR POSITION.
by roberto
Wed Sep 20, 2023 8:54 pm
Forum: Amplifiers
Topic: Bias lights not working on LP70S
Replies: 11
Views: 2107

Re: Bias lights not working on LP70S

Hola smodtactical, You don't see the LEDs into their hole because they are not in the right position. The first thing that you have to do is to take the whole PCB (print circuit board) apart again. Then straiten again the LED pins back again with much care. Before you put the screws back that secure...
by roberto
Tue Sep 19, 2023 6:26 pm
Forum: Preamps
Topic: ART Phono Preamp
Replies: 7
Views: 2361

Re: ART Phono Preamp

Ooopppsss, please excuse me. I did not see this. Joe, I don’t think it would be a split design. Using today’s electronics, switching inputs can be done digitally. Phono 1 is for MC and MM , phono 2 is for MC and MM too. PHONO 1 factory adjusted for both MM a d MC cartridges. The 53dB 47.5Kohms~63dB ...
by roberto
Tue Sep 19, 2023 12:57 pm
Forum: General Discussion - CJ related topics
Topic: New ART Phono Preamp
Replies: 1
Views: 1837

New ART Phono Preamp

Hola Chicos,

For those who are really into analogue super quality sounds, here is the latest preamp from Conrad Johnson:
https://conradjohnson.com/art-phono/

Reading about it, makes me to want one...

Happy listening!
by roberto
Wed Sep 13, 2023 1:47 pm
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

The problem is that this effect is only for one person seating in the sweet spot. If you move a little bit, the effect is lost. The tone and harmonic texture do not change.

What it is truly funny, is to see the face of the listener. What funny face expression they get...truly funny.
by roberto
Wed Sep 13, 2023 1:44 pm
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

:o :shock: That's a very interesting new way to build tubes! I can see the reason why they are so expensive. I hope they sound as good as they look. Great pic RJ! I think that you are not going to believe what I can do right now in my system. I have the sexted Room Acoustics Tuning by Shun Mook. I h...
by roberto
Wed Sep 13, 2023 9:15 am
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

I really hope for the best of the world, that this nonsense war will end soon. It looks like Mr Putin is not doing very well, but this man has a lot of cards under his sleeve. War is not a good thing. I am always thinking why these crazy people don't go to the front to fight. They are always behind ...
by roberto
Sun Sep 10, 2023 8:22 am
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

Well, I have some in stock. I was lucky to get the Cstock just at the beginning. The price was very low if I do the comparison. Also bought some Genalex Gold Lion 6922 too. This Genalex is not a bad sounding tube, I do know that there are other brands offering better sound. OTOH I am very happy with...
by roberto
Sun Sep 10, 2023 12:41 am
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 77
Views: 50548

Re: Oh! For the love of tubes!

Hola Chicos, Last night I had the left channel with a truly rare, peculiar, unsteady behavior of one power KT'120. It was located at the front of the amp. The LED bias started to blinking on one tube, and then I did try to adjust it with no luck...then I saw another tube just behind it, with the top...
by roberto
Tue Sep 05, 2023 4:37 pm
Forum: Preamps
Topic: PF-1 power rating for step down transformer
Replies: 5
Views: 1201

Re: PF-1 power rating for step down transformer

Thanks Admin, You are right with this!!! All I know is that. On the other hand, you can configure the pre for AC input 120 V. or 240V. But I forgot the AC cable and the connectors. Yes, you need a special IEC 240V AC plug and cable. Just thinking loud, this could be a nice DIY project or you might t...
by roberto
Tue Sep 05, 2023 10:25 am
Forum: Preamps
Topic: PF-1 power rating for step down transformer
Replies: 5
Views: 1201

Re: PF-1 power rating for step down transformer

Hola. As far as I know, all Conrad Johnson products are made with all posible power voltages. Just take a look inside, follow the main AC line, and you will see what I mean.

Happy listening!
by roberto
Tue Aug 29, 2023 2:01 am
Forum: Amplifiers
Topic: LP70S vs LP140m
Replies: 8
Views: 1428

Re: LP70S vs LP140m

Great advice Admin! I love the KT-120s in my system. I did try out recently an octet of KT88s, and ending again with the KT-120s. I found much better bass control and the stage too. The overall image with the right size of the musical instruments and voices, the KT-120s Tung-Sol are the clear winner...
by roberto
Mon Aug 28, 2023 7:49 pm
Forum: Non-CJ Products-Audio
Topic: Regenerator and my CJ monoblocks
Replies: 110
Views: 148415

Re: Regenerator and my CJ monoblocks

I just got for service an amplifier with a hum on only one channel. This amp came to my hands from another workshop. Thanks to God, it was not canibaliczed but the did try to find from where this unwanted hum came from. I was lucky. I don't know the reason why, but the problem was an induction hum. ...