Search found 201 matches

by jeffreybehr
Thu Apr 17, 2014 12:54 am
Forum: Member Presentation Thread
Topic: Hello from New Jersey
Replies: 5
Views: 1207

Re: Hello from New Jersey

Welcome, M, and hello again Joe. I think both of you have this signal-polarity question effectively wrong. Yes, the fono* stage does not invert signal polarity (because it has an even number of gain stages), but that's only from fono-in to RECORD-out. From fono-in to main-out AND from any of the li...
by jeffreybehr
Wed Apr 09, 2014 10:58 pm
Forum: Classifieds and Wanted
Topic: BOUGHT ONE--MET150 5-channel poweramp
Replies: 3
Views: 1518

BOUGHT ONE--MET150 5-channel poweramp

If you know of one for sale, pls e-mail me at jeffreybehr(at)cox(dot)net . Thx. http://i89.photobucket.com/albums/k220/jeffreybehr/C-j%20equipment/2014Decd01_MET150front_1200w_zpse1987157.jpg http://i89.photobucket.com/albums/k220/jeffreybehr/C-j%20equipment/2014Dec01_MET150topopen_1200w_zpsd3f6a20...
by jeffreybehr
Mon Mar 31, 2014 3:38 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Premier 11A mod
Replies: 6
Views: 1588

Re: Premier 11A mod

Ed is long retired. Did you e-mail to service@conradjohnson.com ?
by jeffreybehr
Thu Mar 13, 2014 6:34 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: PV1 owner questions
Replies: 16
Views: 2173

Re: PV1 owner questions

'Hiss' like hi-frequency tape hiss, or mostly-mid-frequency noise like tube rush?
by jeffreybehr
Thu Mar 13, 2014 1:28 pm
Forum: Member Presentation Thread
Topic: An Old-Timer, I Suppose
Replies: 3
Views: 1058

Re: An Old-Timer, I Suppose

tvr and fellow inmate, glad to see you made it; welcome. My current c-j pieces are my much-loved MET1 6-channel preamp and a McCormack DNA-HT5 poweramp that drives center and surround speakers. I hope to replace the 'HT5 with a c-j MET150 by the end of the year. http://www.conradjohnson.com/It_just...
by jeffreybehr
Tue Mar 11, 2014 7:07 pm
Forum: Amplifiers
Topic: New amp - Conrad Johnson MF-2550 and SE version ....
Replies: 11
Views: 8811

Re: New amp - Conrad Johnson MF-2550 and SE version ....

admin wrote:Looks really cool. Very impressive. Remind me, what are the speakers?
Serenity Super-7s.

http://serenityacoustics.com/products/thesuper7.html
by jeffreybehr
Tue Mar 11, 2014 6:06 pm
Forum: Amplifiers
Topic: New amp - Conrad Johnson MF-2550 and SE version ....
Replies: 11
Views: 8811

Re: New amp - Conrad Johnson MF-2550 and SE version ....

Hi Jeffrey, I'd love an update on you new speakers. someone else recommended them to me and like to see a photo too. Congratulations! TY. And here they be. Early and messy. http://i89.photobucket.com/albums/k220/jeffreybehr/0%20Serenity%20Super-7%20speakers/2014Mar02_inplace1_1200w_zps2cc27138.jpg ...
by jeffreybehr
Tue Mar 11, 2014 5:47 pm
Forum: Member Systems Gallery
Topic: Wes_in_VA's living room setup
Replies: 10
Views: 3971

Re: Wes_in_VA's living room setup

joeinid wrote:Awesome setup Wes! Looks so beautiful.
...except that not a one of the pics works.
by jeffreybehr
Thu Mar 06, 2014 6:56 pm
Forum: Amplifiers
Topic: S.E.T. Vs CJ Amp
Replies: 9
Views: 5127

Re: S.E.T. Vs CJ Amp

I've loved the sounds of SET poweramps ever since I bought a pair of Antique Sound Lab Explorer 805 50-Watt SET monoamps after reading Art Dudley's review of them in 'Stereophile'. He too owned Quad 989 e-stats and found the 805s' power level adequate. http://i89.photobucket.com/albums/k220/jeffrey...
by jeffreybehr
Wed Mar 05, 2014 1:29 pm
Forum: Off-topic
Topic: Biggest disappointment in equipment sound quality?
Replies: 14
Views: 4985

Re: Biggest disappointment in equipment sound quality?

Many years ago I bought a subwoofer from DAC, and was appalled by the sound quality and the build quality. DAC was revealed for what it is, a catalog that sells overpriced junk to yuppies with overblown advertising. The woofer did not even have a curvalinear cone, being a straight sided paper cone ...
by jeffreybehr
Mon Mar 03, 2014 11:40 am
Forum: General Audio and Video Discussion
Topic: What have you been watching?
Replies: 57
Views: 25165

Re: What have you been watching?

GRAVITY. It looks as good at home as it did thrice in theaters last year. This is a technological and artistic high point for Cuaron and crew.
by jeffreybehr
Wed Feb 19, 2014 2:40 pm
Forum: Preamps
Topic: PV11 cap replacement, original or upgrade?
Replies: 6
Views: 2406

Re: PV11 cap replacement, original or upgrade?

A few more thoughts on the PV11. 1. I see that c-j did not use a line-stage input-coupling cap, as they did in the PV5. That will improve overall transparency a tad compared with having a coupling cap in that position. 2. This preamp uses cathode followers in both sections to reduce output impedanc...
by jeffreybehr
Wed Feb 19, 2014 2:16 pm
Forum: Amplifiers
Topic: New amp - Conrad Johnson MF-2550 and SE version ....
Replies: 11
Views: 8811

Re: New amp - Conrad Johnson MF-2550 and SE version ....

If ever I were in the market for a stereo hi-power amp, I believe I'd buy the ET250s... http://www.conradjohnson.com/It_just_sounds_right/a_et250_met150.html http://www.spearitsound.com/product.cgi?group=735&product=743 ...but that's probably because I LOVE the sounds of vacuumtubes. As it is, ...
by jeffreybehr
Wed Feb 19, 2014 1:53 pm
Forum: Preamps
Topic: PV11 cap replacement, original or upgrade?
Replies: 6
Views: 2406

Re: PV11 cap replacement, original or upgrade?

foot, my PV11 schematic indicates that a 0.15/200 is the bypass cap on the larger 2/250 output-coupling cap. Most probably, the 2/250 is a 'propylene and the .15 is a 'styrene. (The earlier intersection coupler in the phono stage is another 0.15, but that one is rated at 400VDC.) Keeping things on ...
by jeffreybehr
Mon Feb 10, 2014 2:22 pm
Forum: Member Presentation Thread
Topic: Hello from the icebox, I mean central Iowa, USA
Replies: 2
Views: 923

Re: Hello from the icebox, I mean central Iowa, USA

Welcome, macab. I've had a couple PV-5s and even was a part-time c-j dealer when it was new in the '80s. With 70dB total gain, it's split 42 in the fono section and 28 in the line. The latter gain is rather hgh compared with modern line stages, so probably you'll be running the level control in its...
by jeffreybehr
Fri Jan 31, 2014 2:46 pm
Forum: Preamps
Topic: Schematic
Replies: 6
Views: 1998

Re: Schematic

...I recently purchased a conrad johnson PV11 in the U.S. and I'm anxiously awaiting it to arrive. I need to find: 1) the wiring diagram and parts list for repair 2) I would like to convert the power from U.S. Standard (110 v 60 hz) to EU standards (220v 50hz). I wrote to conrad jonson for the spec...
by jeffreybehr
Thu Dec 26, 2013 2:02 pm
Forum: Member Systems Gallery
Topic: my CJ system
Replies: 13
Views: 4819

Re: my CJ system

afonso wrote:

Do you know the quote investigator ?

http://quoteinvestigator.com/2010/05/26 ... -einstein/


NEVER heard of it, and TYVM. I guess I'll have to fix that.
by jeffreybehr
Tue Dec 24, 2013 1:34 pm
Forum: Member Systems Gallery
Topic: my CJ system
Replies: 13
Views: 4819

Re: my CJ system

For those of us who do not recognize EVERY piece of c-j equipment, perhaps you could post the model numbers of your pieces.

...and rotate the 1st pic 180 degrees. :)
by jeffreybehr
Tue Dec 03, 2013 6:11 pm
Forum: DIY, mods, tweaks
Topic: MV-55 - upgrades?
Replies: 5
Views: 5851

Re: MV-55 - upgrades?

Got it; thx. 1. Output-stage powersupply, point A of the schematic: A. Looks as if c-j is already using film caps in the Main-PS CLC filter. Merely add a big (2.2/1000 for $70?) Mundorf S/O (MSO)... http://www.soniccraft.com/mundorf_silver_oil.htm ...in parallel with the 2nd main cap. B. replace th...