Search found 34 matches
- Sun Aug 15, 2010 3:04 pm
- Forum: c3
- Topic: will the guys think nickel is yummy?
- Replies: 1
- Views: 38339
The C3 reunited for the evening to evaluate the 49 and 80% nickel transformers. Johnny and I have been using amorphous core trannies for several years. When we optimized the gaps we found that the gaps required were larger than expected based on the plots. The same occurred this time. For the 80% ni...
- Fri Dec 04, 2009 1:31 am
- Forum: Phono
- Topic: need any tips?
- Replies: 4
- Views: 7686
- Sun Apr 19, 2009 6:29 am
- Forum: Transformers
- Topic: Mixing DHT and IDH filaments.
- Replies: 10
- Views: 14139
Tweeters
Hi Romy This is a bit off the subject. As an introduction, you helped me out several years ago with documentation and mounting template for a Micro Seiki tonearm for which I was most grateful. I was recently perusing your informative web site and enjoyed the section on tweeters. I was unaware of the...
- Wed Mar 04, 2009 12:37 am
- Forum: sbench 101
- Topic: LR Phono Preamp and PS - PC Boards
- Replies: 43
- Views: 61992
LR phono stage
Hi Steve
I'm just getting around to building the phono stage with the original PCBs and Lundahl iron. Have there been any mods, including those alluded to in the June 6, 2007 post?
Thanks
Steve Kaufman
I'm just getting around to building the phono stage with the original PCBs and Lundahl iron. Have there been any mods, including those alluded to in the June 6, 2007 post?
Thanks
Steve Kaufman
- Tue Jan 01, 2008 3:38 am
- Forum: c3
- Topic: adding a tweeter to the Azuras.
- Replies: 2
- Views: 8436
- Sun Aug 19, 2007 11:11 pm
- Forum: c3
- Topic: SLK 75tl rework...
- Replies: 15
- Views: 19491
Hi Jeffrey That was surely a nail biter until the last paragraph. I do have more bass control at my house, but my amps go down lower than John's. In his setting both versions of the amps sounded great. John plans to switch to NuForce amps for his amps for the bass cabinets and he will remove the fre...
- Thu Mar 01, 2007 4:17 am
- Forum: c3
- Topic: be careful with those 75tl's....
- Replies: 9
- Views: 14174
- Mon Feb 26, 2007 10:52 pm
- Forum: c3
- Topic: be careful with those 75tl's....
- Replies: 9
- Views: 14174
Hi Jeffrey I just noticed this. I may have a better solution for you. Is the pair you are replacing mine with the winged version? If so I'll trade you the single winged tube from the pair in which one was broken for a matched pair of 75TLs without the wings if that works for you. Glad to hear everyo...
- Fri Feb 09, 2007 6:39 pm
- Forum: c3
- Topic: SLK 75tl rework...
- Replies: 15
- Views: 19491
Hi Jeffrey The 10 uF caps are actually made by Industrial Condenser Corp. I have a pair of GE 4 uF caps in my preamp. I don't know if they are Spearinol. The common point is that they are in big old ugly gray rectangular cans. The GEs I had in my 45 amps sounded better that all the others. Why don't...
- Thu Feb 08, 2007 3:09 pm
- Forum: c3
- Topic: SLK 75tl rework...
- Replies: 15
- Views: 19491
- Tue Feb 06, 2007 5:53 am
- Forum: c3
- Topic: SLK 75tl rework...
- Replies: 15
- Views: 19491
Hi Jeffrey Thanks for all the torture, I mean diligent listening. When John reads the post he'll have chest pain! This should be really interesting. My amps only function down to 160Hz. Below that the sound is handled by the small solid state NuForce amps. Me thinks my amps will thrive in that envir...
- Mon Feb 05, 2007 6:08 am
- Forum: c3
- Topic: SLK 75tl rework...
- Replies: 15
- Views: 19491
- Wed Jan 31, 2007 1:33 am
- Forum: Phono
- Topic: MC stepups.
- Replies: 86
- Views: 101855
- Tue Jan 16, 2007 5:45 am
- Forum: c3
- Topic: SLK 75tl rework...
- Replies: 15
- Views: 19491
- Sun Mar 19, 2006 11:42 pm
- Forum: Phono
- Topic: MC stepups.
- Replies: 86
- Views: 101855
Hi Dave We (Lynn Olson, Thom Mackris, Mr Sanders from Quicksilver amps, Johnny, and me) got together at Johnny's house and compared the different phono stepups. The results were similar to those I reported to you from Friday night. The straight wire 25 turn bobbin sounded the best. The lower dcr ver...
- Sun Feb 05, 2006 7:06 am
- Forum: Transformers
- Topic: A low turn 5K OT
- Replies: 16
- Views: 16363
Hi Dave Johnny, Grant and I put the 50:1 output trannies back in my amps. We then compared the 2:1 interstage trannies with the 5K 1:1s. Guess what? The 1:1s sounded much better and more life-like. Grant forgot to bring the 4.2s. We'll plug them in next week. At my place the combination of the 50:1 ...
- Sun Feb 05, 2006 6:48 am
- Forum: Phono
- Topic: This shield is da bomb.
- Replies: 19
- Views: 22911
- Sat Jan 21, 2006 5:46 pm
- Forum: Phono
- Topic: This shield is da bomb.
- Replies: 19
- Views: 22911
- Fri Oct 28, 2005 5:04 am
- Forum: Phono
- Topic: MC stepups.
- Replies: 86
- Views: 101855
- Thu Oct 27, 2005 4:03 am
- Forum: Transformers
- Topic: RMAF experiences.
- Replies: 1
- Views: 3912
Post RMAF
Dave
That was a Sunday to remember! I can't recall seeing so many heads spinning in one room. Now we know that pursuit of the ""rest of the story" with the MC step-ups will make us vinyl junkies very happy.
Thanks for your imagination and energy.
SLK
That was a Sunday to remember! I can't recall seeing so many heads spinning in one room. Now we know that pursuit of the ""rest of the story" with the MC step-ups will make us vinyl junkies very happy.
Thanks for your imagination and energy.
SLK
- Sat Sep 10, 2005 11:24 pm
- Forum: sbench 101
- Topic: LR Phono pre with Slagle iron
- Replies: 14
- Views: 23929
Hi Dave and Steve I have sent you both private e-mails about our wishes. We would love to have Steve's phono stage here to share with the Rocky Mountain AudioFest mob, many of whom will be hanging around for the week after the show. Frank Schroder will be staying with us for the week and he has part...
- Mon Aug 15, 2005 11:41 pm
- Forum: c3
- Topic: initial gap selection
- Replies: 10
- Views: 13825
- Mon Aug 15, 2005 12:23 am
- Forum: c3
- Topic: initial gap selection
- Replies: 10
- Views: 13825
Transformer/choke trials
Hi Dave With the various transformers and chokes you sent us recently we attempted to optimize the sound we can obtain by altering the number of windings in the cores and the gap betweent he C-cores. In each case we strive to reach a sweet spot in which the highs are most extended, the midrange and ...
- Thu Aug 11, 2005 4:14 am
- Forum: c3
- Topic: initial gap selection
- Replies: 10
- Views: 13825
- Wed Aug 10, 2005 4:27 am
- Forum: sbench 101
- Topic: LR Phono Preamp and PS - PC Boards
- Replies: 43
- Views: 61992
- Sun Aug 07, 2005 9:02 pm
- Forum: c3
- Topic: initial gap selection
- Replies: 10
- Views: 13825
- Sun Aug 07, 2005 5:28 pm
- Forum: c3
- Topic: initial gap selection
- Replies: 10
- Views: 13825
Hi Dave We're getting pumped about answering all these new questions. James is laying out the four chassis. Before he can order materials he needs to know the dimensions of the footprints of the output and IS trannies as well as the chokes. Would you mind giving me a rough measurement of these when ...
- Sun Aug 07, 2005 5:19 pm
- Forum: sbench 101
- Topic: LR Phono Preamp and PS - PC Boards
- Replies: 43
- Views: 61992
Hi Steve Steve here in C3 land! Please count me in for one of each board as soon as they are available. If there any discrepancies from the D3a schematic on the web site please let me know what they might be. Hopefully Dave will be able to get his iron to us soon as well. We'll have a bunch of folks...
- Wed Aug 03, 2005 3:31 am
- Forum: c3
- Topic: Finishing up some iron
- Replies: 1
- Views: 6011
- Wed Mar 30, 2005 4:03 pm
- Forum: Inductors
- Topic: Three different "80 hy 25ma" plate chokes
- Replies: 34
- Views: 39100
bob bob bobbin away
Hi Dave John received your bobbins for the output trannies. We listened to the original OPTs with optimized gap and then substituted the new bobbins with fewer windings and narrowed the gap to I believe 0.03". The latter provided a substantial improvement in high frequency and low frequency res...