Search found 2330 matches

by roberto
Wed Dec 20, 2023 1:38 pm
Forum: Amplifiers
Topic: Classic 62SE On The Way
Replies: 35
Views: 19316

Re: Classic 62SE On The Way

The Classic Sixty Two is also a great sounding power amp. The SE version comes with a special metal foil resistors, and Teflon Caps. Anyhow, you have wonderful sounding power amp too.
by roberto
Wed Dec 20, 2023 1:36 pm
Forum: Amplifiers
Topic: Classic 62SE On The Way
Replies: 35
Views: 19316

Re: Classic 62SE On The Way

So it is not SE version, the SE version employs the KT-120s, or did you order it with the 6CA7/EL34s instead the KT-120s?
by roberto
Wed Dec 20, 2023 2:14 am
Forum: Off-topic
Topic: Merry Christmas/Happy Holidays!
Replies: 27
Views: 25343

Re: Merry Christmas/Happy Holidays!

Wow, another year has passed...and some of us have new toys to play with...I am really enjoying my CJ goods and my system. I wish to all Merry Xmas and a very happy new 2024!!! I will be on Dec 25th (my birthday) 76! Oh dear, yes 76. I just checked my ears, the Dr told me that he was very impressed ...
by roberto
Tue Dec 19, 2023 12:42 am
Forum: Amplifiers
Topic: Classic 62SE On The Way
Replies: 35
Views: 19316

Re: Classic 62SE On The Way

Glad you made the right choice. The KT120s are very good and nice to have. I did try the KT-150s in an Audio Research power amp, and...no way. I love the KT120s, even knowing that they have less power. Gee, I really love my Classic 120SE too.

Happy listening!
by roberto
Mon Dec 18, 2023 9:20 pm
Forum: Amplifiers
Topic: Classic 62SE On The Way
Replies: 35
Views: 19316

Re: Classic 62SE On The Way

Hola Paolo, Congrats with your new power amp, and I am with Severegloves. It is wise to do your best and get the ET-5, it will blend beautifully with your Classic 62SE. You can't go wrong with it. The ET-5 is a very nice and good sounding preamplifier. Of course it has the Conrad Johnson signature q...
by roberto
Tue Dec 05, 2023 3:54 pm
Forum: General Discussion - CJ related topics
Topic: MV-55 anyone with experience of this?
Replies: 5
Views: 4147

Re: MV-55 anyone with experience of this?

Admin just said it: This unit is bullet proof. Also, I don't know of any issues with this particular model. Of course, a unit with over 25 years you should have a serious listening before you get it. But usually the unit will sing beautiful. Those EL34s/6CA7s tubes are well known as a crystal crispy...
by roberto
Tue Dec 05, 2023 3:39 pm
Forum: Amplifiers
Topic: Noise troubleshooting
Replies: 34
Views: 26839

Re: Noise troubleshooting

Dummy load = phantom load. The right name is dummy load. Also is good to have another very important tool on hand: A Variac transformer with Amp meter.

Happy listen to all.
by roberto
Tue Dec 05, 2023 2:33 pm
Forum: Amplifiers
Topic: Noise troubleshooting
Replies: 34
Views: 26839

Re: Noise troubleshooting

Even a little bit more about playing safe on tubes...they should not be turned on without any load. I use a big 4 ohms resistors...not speakers while I am servicing them. The transformers must have at least a phantom load. But for a minute or so, it is safe, specially without any input voltage. if y...
by roberto
Mon Dec 04, 2023 7:17 pm
Forum: Amplifiers
Topic: Noise troubleshooting
Replies: 34
Views: 26839

Re: Noise troubleshooting

If you are trying to find a problem, the only way is turning the unit on without any connection. If you want to play safe, make a short to the RCA cable, and there will be no problem. Shorting the cable will prevent any odd noise or a possible oscillation. We are talking CJ here. If the amp is bad, ...
by roberto
Mon Dec 04, 2023 7:09 pm
Forum: Amplifiers
Topic: Noise troubleshooting
Replies: 34
Views: 26839

Re: Noise troubleshooting

That's not right. You can do it without any problem. I have being servicing a lot of different brands over more than 50 years and the truth is, there is no reason why you should not do it. When turning the tube amp off, you must wait at least 1 minute before you reconnect something. Tubes are still ...
by roberto
Mon Dec 04, 2023 12:07 am
Forum: Amplifiers
Topic: Noise troubleshooting
Replies: 34
Views: 26839

Re: Noise troubleshooting

To make sure from where the hum is coming, I suggest to disconnect the RCA cable from the input of the amplifier y turn it on. Is there hum?, No?, might be the RCA cable or from the preamp to the amp. Still noise? So disconnect the inputs in the preamp a leave only a connection from the output of th...
by roberto
Tue Nov 28, 2023 11:20 pm
Forum: Amplifiers
Topic: Noise troubleshooting
Replies: 34
Views: 26839

Re: Noise troubleshooting

Well said Admin. Usually that noise is coming from a small signal tube. Just swap the suspect and have a listen. It is always wise to turn off the preamp while doing the swapping. Yes I know it takes more time...this is the safer way to do this kind of job.
by roberto
Mon Nov 27, 2023 9:34 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Loud static from a loudspeaker when I approach it
Replies: 6
Views: 3130

Re: Loud static from a loudspeaker when I approach it

Hola, just thinking loud, do you have a good earth connected to your system? This might discharge the possible static electricity that it is build up to ground.
by roberto
Mon Nov 27, 2023 11:45 am
Forum: Amplifiers
Topic: Premier 12 Cover Modification
Replies: 26
Views: 10080

Re: Premier 12 Cover Modification

Hola Wildcat, it is a pleasure to be in contact with you. I just wanted all to know the reason why we should not use the KT-150s as a direct replacement for the KT-120s. OTOH, I did some tube rolling with my amp. My findings was that I should stick with the KT-120s. I did find more organic sound, mo...
by roberto
Mon Nov 27, 2023 9:25 am
Forum: Amplifiers
Topic: Premier 12 Cover Modification
Replies: 26
Views: 10080

Re: Premier 12 Cover Modification

Hola Chicos, Nice job Bill!... Regarding using the KT'150s replacing the KT'120s, Mr Jeff Fischel does not recommend it. Talking about it with him, my conclusion is that the voltage regulators for the filaments of the tubes are very specific for the current that the KT120s drain, the KT150s drain mo...
by roberto
Wed Nov 22, 2023 1:27 am
Forum: Amplifiers
Topic: Classic 60
Replies: 12
Views: 5100

Re: Classic 60

Gee, I can't say that about the service and support. I have being receiving all the help that I needed and support from Jeff. I knew that Jeff had problems with some non customers, and specially from people that was counterfeit Conrad Johnson products. He still does not send the diagrams and when yo...
by roberto
Mon Nov 20, 2023 8:27 pm
Forum: Amplifiers
Topic: Classic 60
Replies: 12
Views: 5100

Re: Classic 60

Yes RJ, Jeff really knows his goods. He knew that once I was going to disconnect the secondary wounds of the transformer, the short will not be present. He knew that it was another problem, not the transformer. so what I did is to connect each secondary and checked the short with the aid of the vari...
by roberto
Sun Nov 19, 2023 1:22 am
Forum: Amplifiers
Topic: Classic 60
Replies: 12
Views: 5100

Re: Classic 60

Yes, variac is a clever tool to have, specially when a short arise. Just isolate the parts of the circuit and there you go.

Happy listening to all! And as RJ says, enjoy those fine tunes.
by roberto
Sat Nov 18, 2023 2:58 pm
Forum: Amplifiers
Topic: Classic 60
Replies: 12
Views: 5100

Re: Classic 60

Well, the model that I have is an old model, I bought it at circuits specialists...now they have a better variac:

https://www.circuitspecialists.com/tdgc ... ransformer


And I remember that I paid about the same too...
by roberto
Sat Nov 18, 2023 9:40 am
Forum: Amplifiers
Topic: Classic 60
Replies: 12
Views: 5100

Re: Classic 60

Here is another tip: having this variac tool with the amps meter, if the transformer is bad, then even disconnecting all the secondary wounds, the amps reading on the meter will be showing the short. When I disconnect all the secondary wounds, the short went away, telling that the power transformer ...