|
Title: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: TeleCasterAndTubes on February 07, 2009, 06:11:03 PM Hi,
I Have put some sound clips on youtube comparing the two. http://www.youtube.com/watch?v=nwC6vkOEuQY http://www.youtube.com/watch?v=wyYLnKksWdQ http://www.youtube.com/watch?v=HutsE-Z5JwY http://www.youtube.com/watch?v=CTnWF4K50fM Let me know what you think...... Every video has 2 parts with P1 Ceriatone P2 Westlabs Some technical information. Westlabs 15 W 21,65 V Primary 1 V secundary. 21,65 x 21,65 = 468,7225 x 8 = 3749 Ceriatone 18W 44,83 V Primary 1 V secundary 44,83 x 44,83 = 2009,7289 x 8 = 16077 I do not have a tone generator, so i only used a Variac. See http://akavalve.blogspot.com/2008/12/champion-600-output-transformer.html (not my blog) Regards Robert. Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: erwin_ve on February 07, 2009, 07:54:54 PM Wow that's a nice comparison.
It's difficult to judge by a YT vid, but here's my thoughts. In all vids the westlab is more articulate and has nicer highs. The last full power vid clearly shows it's too much for the ceriatone tranny. Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: mcinku on February 09, 2009, 08:29:09 AM The Westlabs OT is definitely more open with nicer high end detail and more bass as well.
Ceriatone OT sounds somehow congested I would say. The test setup was the same for both OTs, right?... same amp, tubes, settings... Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: hywelg on February 09, 2009, 09:51:56 AM I was hoping to hear no difference at all, being as I have just completed my DC-30 build (its with my tech now getting tested and powered up), but unfortunately that was not the case. The last clip was the clincher.
Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: TeleCasterAndTubes on February 09, 2009, 10:59:41 PM The Westlabs OT is definitely more open with nicer high end detail and more bass as well. yes, same amp, tubes etc. I was a bit surprised the first time I played the amp with the Westlabs, the sound was totally clean when in contrast the Ceriatone had already quit a bit of breakup with the same settings.Ceriatone OT sounds somehow congested I would say. The test setup was the same for both OTs, right?... same amp, tubes, settings... So the only thing that is different is more volume from the preamp to get the same amount of breakup. What also surprised me is the difference in primary impedance? Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: TeleCasterAndTubes on February 09, 2009, 11:10:02 PM I was hoping to hear no difference at all, being as I have just completed my DC-30 build (its with my tech now getting tested and powered up), but unfortunately that was not the case. The last clip was the clincher. The DC30 has a different OT (30W) than the Creme Brulee (18W), so I'm not sure if you would hear the same difference in sound.Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: Kitarist on February 19, 2009, 11:54:39 AM The OT does make a difference
Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: Pickmaster on February 19, 2009, 02:10:50 PM Very well done, thanks for the comparison.
Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: sunnydaze on April 07, 2009, 05:29:35 AM Hello,
The results of your winding ratio and reflected load tests on the two OT's is kind of surprising: Some technical information. Westlabs 15 W 21,65 V Primary 1 V secundary. 21,65 x 21,65 = 468,7225 x 8 = 3749 Ceriatone 18W 44,83 V Primary 1 V secundary 44,83 x 44,83 = 2009,7289 x 8 = 16077 I do not have a tone generator, so i only used a Variac. It looks like both OT's have multiple secondaries (ie can choose 4 or 8, etc). Just wonder of if you were consistent on the measurements. thnks Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: TeleCasterAndTubes on April 07, 2009, 10:43:18 AM Hello, The results of your winding ratio and reflected load tests on the two OT's is kind of surprising: Some technical information. Westlabs 15 W 21,65 V Primary 1 V secundary. 21,65 x 21,65 = 468,7225 x 8 = 3749 Ceriatone 18W 44,83 V Primary 1 V secundary 44,83 x 44,83 = 2009,7289 x 8 = 16077 I do not have a tone generator, so i only used a Variac. It looks like both OT's have multiple secondaries (ie can choose 4 or 8, etc). Just wonder of if you were consistent on the measurements. thnks yes, both sec. 8 ohms (The difference in specs surprised me too). It is always possible that I made a mistake :-[, I could double check but that means disconnecting the OT again (If I have the time I'll double check). Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: sunnydaze on April 08, 2009, 09:22:18 AM Hi tele,
Wouldn't ask you to pull the OT just to measure it. Which of the two, if either measured up close to the expectation for the power tube configuration in this amp? Does this amp use two EL84's? Either way, it comes down to the sound, and you put together a nice comparison. thanks for posting Title: Re: Westlabs built for Matchless to their specs VS Ceriatone Output Transformer Post by: TeleCasterAndTubes on April 08, 2009, 07:39:58 PM Hi tele, Wouldn't ask you to pull the OT just to measure it. Which of the two, if either measured up close to the expectation for the power tube configuration in this amp? Does this amp use two EL84's? Either way, it comes down to the sound, and you put together a nice comparison. thanks for posting Yes two EL84 PP. It's the Creme Brulee. |