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by ronenash
Tue Aug 29, 2017 10:33 pm
Forum: Preamps
Topic: new ET-7, the replacement for the ET-5
Replies: 31
Views: 890

Re: new ET-7, the replacement for the ET-5

To me the ET7 seems to be built to a much lower and cheaper standard than the ET5. For year a cu took pride in the fact that they are not using electrolytic caps in the signal path and it's related power supplies. That no longer is the case. I can't comment on the sound of the ET7 but parts costs ar...
by ronenash
Tue Aug 29, 2017 10:27 pm
Forum: Amplifiers
Topic: CJ Classic 62SE broken tube!
Replies: 6
Views: 166

Re: CJ Classic 62SE broken tube!

Just get a new single tube. You don't need matches tubes in the Classic 62. Get a good tube from a reputable source.
by ronenash
Mon Aug 14, 2017 11:32 pm
Forum: DIY, mods, tweaks
Topic: CAV50 triode connection
Replies: 9
Views: 2565

Re: CAV50 triode connection

Just a note, you also need to adjust the bias point when converting the amplifier to triode.
by ronenash
Mon Aug 14, 2017 11:27 pm
Forum: Amplifiers
Topic: Hum problem with LP125m SE
Replies: 16
Views: 317

Re: Hum problem with LP125m SE

Hi Anthony

I have not tried this. Might try it some day but everything sounds so good right now that I am not very motivated to make changes.

Ronen
by ronenash
Sat Aug 05, 2017 5:32 am
Forum: Preamps
Topic: Any one thinking about a GAT Series 2 preamp?
Replies: 17
Views: 1152

Re: Any one thinking about a GAT Series 2 preamp?

Coppy, I also prefer the GL kt88 to the KT120. Another option is the Mullard kt88 which is virtually identical to the Gold Lion at a lower price. Every report i read said they are virtually identical which I confirmed myself.
by ronenash
Thu Jul 20, 2017 8:08 am
Forum: Amplifiers
Topic: Hum problem with LP125m SE
Replies: 16
Views: 317

Re: Hum problem with LP125m SE

A quick update. Floating the ground on both mono blocks completely solves the problem. I am not very comfortable with this solution but when doing so the amps are 100% silent. Next step would probably be to route a dedicated line from the breaker board to the listening room. Currently I am using a T...
by ronenash
Tue Jul 04, 2017 3:52 pm
Forum: General Discussion - CJ related topics
Topic: The Formidable Renaissance 15
Replies: 6
Views: 155

Re: The Formidable Renaissance 15

Hi RJ, 6 or so years ago I had a ML Spire after selling the Ascent i I previously had. I loved the Spire very much but when the opportunity came to get a Sonus Faber Amati Anniversario I could not pass it, sold the Spire and bought the Amati's. I remember when I first got the SF Amati Anniversario I...
by ronenash
Tue Jun 27, 2017 11:32 am
Forum: Preamps
Topic: Modifying a Premier 15 Phono Stage
Replies: 0
Views: 151

Modifying a Premier 15 Phono Stage

Hi all, I have always found the subsonic filter on my Premier 15 useless. I am currently working on a simple and small project to modify the Premier 15 subsonic filter function to become a Stereo/Mono switch instead. I find that a stereo/mono switch in a phono preamp is much more useful that a subso...
by ronenash
Mon Jun 26, 2017 10:58 pm
Forum: Amplifiers
Topic: Hum problem with LP125m SE
Replies: 16
Views: 317

Re: Hum problem with LP125m SE

Haven't had the time to do some more testing. I will try to float the ground in one of the mono blocks to see if that helps. Not a good permanent solution but might help steer me in the right direction. Will update soon.

Thanks for the ideas his far.
by ronenash
Thu Jun 22, 2017 6:44 am
Forum: Amplifiers
Topic: Hum problem with LP125m SE
Replies: 16
Views: 317

Hum problem with LP125m SE

Hi all, Thought someone might help with a fresh thought on this problem I am having. Since I built my new listening room and completed connecting all my gear I am getting fairly laud hum from my LP125 power amps. This is not super laud and when music is playing at reasonable volume you can not hear ...
by ronenash
Mon Jun 12, 2017 10:10 pm
Forum: General Discussion - CJ related topics
Topic: Searching for best Conrad Johnson phono preamp
Replies: 9
Views: 249

Re: Searching for best Conrad Johnson phono preamp

Hi Jasper The TEA2 does not have the same quality parts as the pr15. Even in its best form it has electrolytic caps in the power supply where the pr15 is all film caps. It's a much cheaper design than the pr15 overall. Just look at the internals and you will see. Things such as the suspended sub cha...
by ronenash
Fri Jun 09, 2017 2:11 pm
Forum: General Discussion - CJ related topics
Topic: Searching for best Conrad Johnson phono preamp
Replies: 9
Views: 249

Re: Searching for best Conrad Johnson phono preamp

The Premier 15 is a great photo stage of you can find one. Better than the TEA2 IMO and approaching TEA1 levels although not quite there.
by ronenash
Sat Apr 22, 2017 12:54 am
Forum: Preamps
Topic: Repair suggestions for PV12 please
Replies: 9
Views: 264

Re: Repair suggestions for PV12 please

CJ preamps do use any negative feedback and thus have fairly high gain, typically 20 or above db. Make sure you are using the right tubes in the PV12. High volume at 9 o'clock position seems a bit extreme.
by ronenash
Thu Apr 20, 2017 10:45 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Change voltage from 125 to 220V in preamps.
Replies: 6
Views: 138

Re: Change voltage from 125 to 220V in preamps.

Send me PM and I will send you instructions for modifying your Premier 14.
by ronenash
Thu Apr 20, 2017 12:41 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Change voltage from 125 to 220V in preamps.
Replies: 6
Views: 138

Re: Change voltage from 125 to 220V in preamps.

To the best of my knowledge all cj gear is multi voltage. Cj can provide instruction on how to rewire the transformer to 220v.
by ronenash
Tue Apr 04, 2017 5:44 am
Forum: Preamps
Topic: ET3 SE Tube Life
Replies: 13
Views: 2813

Re: ET3 SE Tube Life

CJ for some reason chose to run the filament voltage on the ET3 and ET5 a bit high. 6.5v vs. the spec'd 6.3v. This causes some tube to hiss after a while. You can use the 7v version of the 6922/6DJ8 which is the PCC88/7DJ8 and you will not have an issue. As a bonus these tubes are typically much che...
by ronenash
Thu Mar 30, 2017 5:57 am
Forum: General Discussion - CJ related topics
Topic: CJ MF 2500
Replies: 6
Views: 216

Re: CJ MF 2500

I would not bypass any fuses if I were you. The disaster that can result is not worth any gain in sound quality. One accidental shorting of the speaker leads will result in your amp being toasted.
by ronenash
Wed Mar 29, 2017 6:09 am
Forum: General Discussion - CJ related topics
Topic: CJ MF 2500
Replies: 6
Views: 216

Re: CJ MF 2500

I have swapped the stock fuses with "audiophile" fuses from Hi Fi Tuning in my ACT2 and Premier 14 preamps and can't say I heard a huge difference. I believe there are better ways to invest your money. 5 fuses will cost anywhere from $250 to $500 and more. A premier power cord will likely have a muc...
by ronenash
Fri Mar 24, 2017 6:32 am
Forum: Amplifiers
Topic: Two new power amps from CJ for 2017!
Replies: 25
Views: 919

Re: Two new power amps from CJ for 2017!

If you love the EL34 sound try the new Mullard reissue KT88's. I find them more musical than the KT120. They are warmer in the mids and sound similar to the Gold Lion KT88 at a much lower price. They are very dynamic with great extension.
by ronenash
Wed Mar 22, 2017 6:53 am
Forum: Amplifiers
Topic: Two new power amps from CJ for 2017!
Replies: 25
Views: 919

Re: Two new power amps from CJ for 2017!

RJ, For a couple of years I had the ML Spire mated with a CJ LP70 and a Beard P100 tube amplifiers. The combination was heavenly and I could live happily ever after with it. You lose the highest frequencies because of the very low impedance of the ESL panel at those frequencies but at my age I am no...