Search found 4848 matches

by admin
Thu Dec 12, 2024 6:08 pm
Forum: Amplifiers
Topic: ART150 not switching on
Replies: 5
Views: 19

Re: ART150 not switching on

Nope, disagree on how quickly it can blow after startup. I had my tube blow on my ART amp. Changed the fuse to try and find which tube (on the first blow fuse I saw the flash from across the room but not able to identify which tube it was with the initial blow as I was obviously not expecting it ...
by admin
Thu Dec 12, 2024 5:29 pm
Forum: Preamps
Topic: 7dj8 in ET5 not working
Replies: 12
Views: 78

Re: 7dj8 in ET5 not working

Ahhh, frustrating. I think this time of year all the shippers are so crazy busy I'm not surprised things may get lost at a higher rate. I hope it turns up.
by admin
Thu Dec 12, 2024 5:26 pm
Forum: Amplifiers
Topic: ART150 not switching on
Replies: 5
Views: 19

Re: ART150 not switching on

Sorry to hear about this but replacing the main fuse is luckily very easy as it is right on the back with a screw release.

You can see it on the right and left side of this picture: https://www.highperformancestereo.com/media/catalog/product/cache/1/image/600x600/9df78eab33525d08d6e5fb8d27136e95/i ...
by admin
Wed Dec 11, 2024 2:37 pm
Forum: Member Systems Gallery
Topic: New member
Replies: 3
Views: 32

Re: New member

Ahhhh,... We don't have that unit in our database. It's not like I have access to every schematic for every CJ unit ever released... not really sure what you would have me do? The support that I and other members try to give here on CJO is voluntary. If you are looking for formal support and repair ...
by admin
Mon Dec 09, 2024 6:44 pm
Forum: Non-CJ Products-Audio
Topic: Gryphon PowerZone
Replies: 2
Views: 27

Re: Gryphon PowerZone

Very cool. I would love to try one but the price tag of $14k for the 20 amp version is pretty hefty. In general, Gryphon makes some incredible gear.
by admin
Sat Dec 07, 2024 8:12 pm
Forum: Member Systems Gallery
Topic: New member
Replies: 3
Views: 32

Re: New member

First, welcome to CJO and great to have you with us!

Very nice vintage solid state gear there. And I completely agree with you how the listening environment has a huge (and often ignored) influence on the overall sound presentation.

Not sure how much streaming you do but if that interests you I ...
by admin
Thu Dec 05, 2024 6:00 pm
Forum: Amplifiers
Topic: Updating and Future proofing mf2500a and PF 1 preamp
Replies: 4
Views: 69

Re: Updating and Future proofing mf2500a and PF 1 preamp

This is a hard call. The PF1 is not just 20+ years old, but now almost 35 years old! And the MF2500 is 26 years old. At this point any cap is going to be prone to failure. I think if you really wanted to bring these units up to spec, you would need to replace the caps or somehow test the ones in ...
by admin
Wed Dec 04, 2024 11:30 am
Forum: Troubleshooting/problems/manuals/schematics
Topic: Official Schematics and Manuals Thread (Registered Users)
Replies: 180
Views: 140959

Re: Official Schematics and Manuals Thread (Registered Users)

If it's not in the database I have too have not been able to find it. They are not publicly available as I am aware.
by admin
Wed Dec 04, 2024 11:29 am
Forum: Classifieds and Wanted
Topic: The Misic Room: Conrad Johnson ART300 Mono Tube Power Amplifiers
Replies: 72
Views: 3286

Re: The Misic Room: Conrad Johnson ART300 Mono Tube Power Amplifiers

Very well said RJ.

This has been my overall experience as well. The higher end I go the more "complications" I encounter. My home theater setup has been nothing but plug-and-play. And that's both audio and video sources mixed with an amazing level of technology packed in. I think it's similar to ...
by admin
Wed Dec 04, 2024 7:10 am
Forum: Member Presentation Thread
Topic: Greeting from Korea
Replies: 1
Views: 23

Re: Greeting from Korea

Welcome to CJO. Great to have you with us.

We don't have many members for South Korea. You guys are all over our news currently with the political situation and declaration of martial law. Hope everything turns out ok.
by admin
Sat Nov 30, 2024 7:42 am
Forum: Preamps
Topic: GAT1 versus GAT2
Replies: 65
Views: 4457

Re: GAT1 versus GAT2

I've also had very similar experiences with the upgrades of the system over the years. These incremental improvements can be rather substantial. I find that I tell myself, "wow this is a great system, probably not worth upgrading as just how much better could it be?" And then I find gear that just ...
by admin
Fri Nov 29, 2024 7:44 pm
Forum: Preamps
Topic: Straight question: Premier Seven vs Premier 17
Replies: 1
Views: 29

Re: Straight question: Premier Seven vs Premier 17

I suppose one factor is price. However, it's hard for me to go with a unit that is going to be around 12 years older than the other, all other things being equal. One is from the 80's, the other from 2000. If there have been no recent refurbs done, I would question the longevity of a preamp from the ...
by admin
Fri Nov 29, 2024 10:40 am
Forum: Preamps
Topic: GAT1 versus GAT2
Replies: 65
Views: 4457

Re: GAT1 versus GAT2

Yes, this is a common problem with upgrades. You come to realize that the amazing sound you had previously can actually be substantially improved. Nice 1st world problems to have!

Regardless, congrats on the system!
by admin
Wed Nov 27, 2024 9:01 am
Forum: General Discussion - CJ related topics
Topic: Oh! For the love of tubes!
Replies: 87
Views: 56909

Re: Oh! For the love of tubes!

Glad to hear that Premier 12 is back to service and better than new! Tubes pair so well with Martin Logan's ESL series. They are just amazing. Sometimes I miss my good old ML Vantages, they sounded so nice. I had the opportunity to audio the new ML series and had a lengthy listening session with the ...
by admin
Tue Nov 26, 2024 3:46 pm
Forum: Preamps
Topic: Premier Two in need of a lot of love...
Replies: 2
Views: 78

Re: Premier Two in need of a lot of love...

You can find the schematics to the Premier 2 here: https://www.conradjohnsonowners.com/viewtopic.php?t=128

The Premier 2 is a pretty old unit and the ones I have seen have typically have had components replaced. Unless you have a repair/modification history, it's going to be pretty tough to tell ...
by admin
Tue Nov 26, 2024 3:40 pm
Forum: Non-CJ Products-Audio
Topic: Bose Corp in full glory
Replies: 15
Views: 184

Re: Bose Corp in full glory

Sad to hear Denon/Marantz not making money. Denon has a pretty big presence in the home theater world. Not sure what is going on there and what the reason for the falling revenues?
by admin
Sat Nov 23, 2024 6:59 am
Forum: Non-CJ Products-Audio
Topic: LP12 and Clearaudio Master Reference
Replies: 89
Views: 1228

Re: LP12 and Clearaudio Master Reference

Both are amazing units. I will say that the engineering and design on the Clearaudio is just at another level. I know that it doesn't necessarily make it "superior," but I think that extra level of complexity deserves attention. I look at the Clearaudio as an ultra-highend modern design. I think the ...
by admin
Fri Nov 22, 2024 5:35 pm
Forum: Non-CJ Products-Audio
Topic: Bose Corp in full glory
Replies: 15
Views: 184

Re: Bose Corp in full glory

Interesting news. I don't know if this is good, bad, or neutral. I think we will have to see what kind of influence (if any), Bose will press upon McIntosh. I think that they serve very different customer base. Bose I most often see on airplanes with their noise cancelling headphones. McIntosh ...
by admin
Thu Nov 21, 2024 8:28 am
Forum: General Discussion - CJ related topics
Topic: Customer Service
Replies: 5
Views: 107

Re: Customer Service

Sorry to hear about the difficulties with reaching them. It is a small business so perhaps somebody is out that typically handles these things? How long ago did you contact them?

Besides that, do you have a local authorized CJ dealer? Perhaps that would be another avenue of exploration?
by admin
Tue Nov 19, 2024 11:34 am
Forum: Member Systems Gallery
Topic: What I listen to
Replies: 3
Views: 71

Re: What I listen to

As I mentioned on your introduction page, very cool system.

The Quad 22l's were well reviewed when they came out if memory serves. Lots of bang for your buck in your setup. Very nice.