1: Help>>EAR834>>>Dead Right Channel (10.51)
Posted by GrooveDigger on 2003-10-25, 12:13:40 (66.234.208.70)
Hi everyone, I have an EAR834 integrated and the right channel makes a low hum no matter what the volume setting and crackles when amp is shut off. I have switched all left tubes with right tubes and .......

2: Re: Tube rolling for EAR834 Phono Preamp? (10.51)
Posted by Jack G on 2000-02-19, 11:03:57 (207.172.11.148)
it takes three tubes. I'm using 1 GE 5751 feeding two Raytheon 5751s. Jack .......

3: Re: Tube rolling for EAR834 Phono Preamp? (7.72)
Posted by Broman on 2000-02-20, 09:34:45 (12.18.241.170)
Please correct me if I am wrong, but didn't Thorsten analyse the circuit and say that you need a 12AX7 in V2, a 6072 or 12AY7 in V1, and 5751 (or 12AT7, 12AU7, or 6072)in V3. Am I thinking of another .......

4: Re: Help>>EAR834>>>Dead Right Channel (7.03)
Posted by vinyl-addict on 2003-10-25, 13:33:52 (67.122.109.1)
I'd bet that the Right RCA output jack has a bad connection. Wiggle the jack when you have a source playing, I and many others have experienced this problem with EAR products. .......

5: Phono Preamp- Wright,FI, others (6.84)
Posted by Frank C on 2000-11-22, 13:23:02 (12.89.132.29)
I am looking to purchase a tube phono preamp. I am considering the Wright WPP 100C, the Fi?? EAR834. I would prefer to connect directly to power amp. Does anyone have any experience with these or othe .......

6: Tube rolling for EAR834 Phono Preamp? (6.67)
Posted by Marc Bratton on 2000-02-19, 09:12:22 (205.184.135.180)
Wasn't sure whether to place this under "vinyl", or "tubes". If all goes well, I'll soon be taking delivery of EAR 834 Phono Preamp-probably the MM "normal" version. I've heard the stock tubes are for .......

7: RE: KT88 to replace 6550 (6.60)
Posted by Rabski on 2009-02-06, 08:57:26 (82.29.175.225)
Coming tomorrow. I'm cooking tonight then off to the pub. Had enough for today! Linn LP12, Ittok, Van den Hul DDT. EAR834, Transcendent GG, Conrad Johnson Premier 11A, Dali Helican 400. Cables by Nord .......

8: Re: EL34 anode current (6.53)
Posted by Serge on 1999-11-12, 10:28:03 (196.2.50.9)
Thanks for your answer I contacted Swetlana, they seems upset that I doubted of there valve quality, all what I asked was could low anode current affect sound quality ?, maybe I bought a bad lot. (rej .......

9: Re: Tube rolling for EAR834 Phono Preamp? (6.10)
Posted by SCOTT on 2000-02-20, 10:54:11 (206.170.6.131)
I took Thorsten direction on my EAR, and he was right, you can get more detail, more of an up front sound with 12ay7's and 12at7's. Bought a lot of tubes, had fun, but, ended up with 3 telefunken nos .......

10: Re: Search for tube integrated amp (5.89)
Posted by Serge on 2000-02-13, 11:11:08 (196.25.227.6)
The best integrated all valves amp that I know is the EAR834, pure magic, with bass that few valve amps can match. Otherwise try the Pathos Classic one its an Hybrid, valve front end solid state outpu .......

11: RE: KT88 to replace 6550 (5.84)
Posted by Rabski on 2009-02-06, 07:40:27 (82.29.175.225)
Thanks CB. No problems with getting the soldering iron out and I agree that a higher possible bias wouldn't do any harm (providing I'm careful). I'll pull the bottom plate off later, but what would yo .......

12: Tube Phono Stage Recommendations? (5.69)
Posted by Paul on 2006-04-15, 17:51:03 (86.143.171.209)
I am looking for a phono stage to go with my CR Development Romulus tube integrated, and I'm torn between a few possibilities! One obvious idea is the EAR834P, but I was wondering how something like t .......

13: RE: KT88 to replace 6550 (5.63)
Posted by Rabski on 2009-02-06, 08:32:08 (82.29.175.225)
Other question is whether KTs are likely to need higher to bias in the first place or lower. I know from spec sheets that they'll take a higher plate voltage, but does this mean they'll actually need .......

14: RE: KT88 to replace 6550 (5.33)
Posted by Rabski on 2009-02-06, 08:27:09 (82.29.175.225)
Even with the relatively new Svets, one is on the edge of not biasing and the other three need the pots turned a long way up. I can't find a schematic or figures for the Premier 11, so I don't know if .......

15: KT88 to replace 6550 (5.23)
Posted by Rabski on 2009-02-06, 05:57:48 (82.29.175.225)
Similar to Opusover21's question, I've just bought a Conrad Johnson Premier 11A. Problems with biasing seem to be down to a pretty old set of valves and I'm looking to do some rolling. I've swapped ar .......

16: RE: Newbie Help Please (4.74)
Posted by Rabski on 2009-02-06, 05:34:31 (82.29.175.225)
Hi OP! As from the Wam, I'm having fun and games with a CJ Prem 11A at the moment. Check the CJ site for original specs. The first driver stage on most of their power amps uses 5751s, which are a lowe .......

17: Re: Qs for Ciao_Circuit expert... (4.71)
Posted by Thorsten on 1999-08-26, 10:23:29 (195.99.125.202)
Hi there, >>>>You listed couple ways to tweek EAR, I think for now, it's easier to replace the tubes as you described; but I'm wondering will this kind of impedence matching adjustment introduce the F .......

18: Re: Tube rolling for EAR834 Phono Preamp? (4.46)
Posted by Thorsten on 2000-02-20, 10:15:23 (195.99.125.202)
Hi all, Well, based on analysing the Circuit, the Middle Valve (V2) should allways be a 12AX7/ECC83 Type. This Valve is within a NFB Loop and determines the accuracy of the RIAA EQ. Using a Lower Gain .......

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