Good evening to the forum, does anybody use these tubes(4cx600j or jb)? How does it perform and what is the gain of this tube?
SHOEMAKER.
SHOEMAKER.
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4cx600j or jb
- Thread starter shoemaker
- Start date
Good evening to the forum, does anybody use these tubes(4cx600j or jb)? How does it perform and what is the gain of this tube?
SHOEMAKER.
The gain of the tube seems to be about 18 Db.
The grid dissapation of the tube is only 1 watt which means, it has to be run class AB (with no grid current flowing).
If there is an amp that uses them, I would expect "Legal Limit" out of one tube if, the amplifier is set up properly. This would be a delicate tube (RF wise) and, the in-experienced builder would be advised to pick a different tube to HB with.
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Good evening paws , and thank you for the information. The prices on those tubes are between 1400 dollars and 2200 dollars. Must be some great tubes for that price .lol lo. Thanks again sir and have a great day.
Toll_Free
Well-Known Member
The 4CX600 is ULTRA LINEAR. As Paws stated, it's designed for AB1. It's akin to the 4CX1000 type tubes.
For the price, I'd purchase 4-5 YC-156s, run them class A, and still have twice the output, more linearity, and be able to go to 10 KW +.
And when a tube DOES go out, it only costs ya 4-600 bucks.
--Toll_Free
For the price, I'd purchase 4-5 YC-156s, run them class A, and still have twice the output, more linearity, and be able to go to 10 KW +.
And when a tube DOES go out, it only costs ya 4-600 bucks.
--Toll_Free
Hello Toll Free, I agree with everything you said. The tubes were given to me, I have about 5 of them so I am going to build a 2 tuber and see how it performs. AB1 of course lol lol.
Take care bro and we will see how the project gos.
Take care bro and we will see how the project gos.
WHAT MAKES THE SK606 DIFFERENT FROM THE SK607 TUBE SOCKET? CAN U MODIFY THE 606 TO WORK WITH THE 4CX600JB TUBE?
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@ heartbreaker3473:Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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@ AudioShockwav:Wes, it's better if you start a thread on the main forum, more people are going to see your question.
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@ heartbreaker3473:I put it in the general disscution help area and started a new thread. Thank you for letting me know.