Audio Nervosa Conquered

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SteveFord

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Re: Audio Nervosa Conquered
« Reply #40 on: 13 Apr 2012, 11:28 pm »
Sonic Frontiers sold, preamp time...

satie

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Re: Audio Nervosa Conquered
« Reply #41 on: 14 Apr 2012, 04:09 am »
Ach, it got the better of me.
I hope I don't regret selling my SFL-2.

First let me congratulate you on what is probably a mistake.

The let me suggest you take on a DIY project. Take one of the old overbuilt preamps from one of Bruce Moore's old companies,
The Paragon
Audible Illusions Dual Mono, Uranus, Saturn
MFA preamps Magus, Luminesence

Take out their old SS regulators controllers and diodes replace them with FREDs etc. high quality modern parts.
Make a box for the power supply and place the trannies in it and replace all the PS caps with motor run foil in oil caps and wire them point to point inside the box.
Run shielded leads to the rest of the boards inside the preamp body. 
Use the vacated space to replace the signal capacitors with oil impregnated foil capacitors. Mundorfs, or Modwrights. Vcaps if you can afford them.
Replace all connectors, and long wires with modern audiophile ones.
Pots and switches should be replaced too.

This is something most audio electronics techs can do for you. Buy the parts yourself and give them to him.

The full project would cost significantly less than $2k. It should surpass Bruce Moore's current version of his preamp, the $10k Dual Mono. The old Moore preamps all sound very good as they are, so long as their old parts have not gone kerfluey.  Despite their age the designs have not been surpassed significantly by new equipment, and they climb back to the top of the heap with modern parts.

Another excellent option is the DC coupled version of the Nelson Pass B1 buffer coupled with a TVC based on the S&B TX102 transformer. It can be set for 6db gain if your sources are wimpy.

With a few key mods and appropriate tubes, the top of the current line of Ming Da preamps can do the job.

For a slightly lesser result but little work you can use a Doge 8 preamp.

Edit
I should add the Melos SHA Gold or MA 333 gold preamps, particularly in their Maestro versions. The SHA Gold offers passive mode, active mode, and balanced active hybrid mode. Still terrific performers.
« Last Edit: 14 Apr 2012, 04:11 pm by satie »

medium jim

Re: Audio Nervosa Conquered
« Reply #42 on: 14 Apr 2012, 05:23 am »
Steve:

One of the best bar none DIY Preamps is the current Bottlehead Foreplay III with a couple of tweaks will compete with any pre out there.  If I didn't listen to FM Radio, I would have my Bottlehead in my main system.  However, my 50 year old McIntosh MX110 does have tube FM and the preamp really likes my amps....

Good luck with your quest for the perfect Pre for your system!

Jim

SteveFord

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Re: Audio Nervosa Conquered
« Reply #43 on: 14 Apr 2012, 10:11 am »
Thank you, gentlemen.
I really like the Sonic Frontiers preamps but I do have one with the 1.7 system and that one is staying put.  It just matches up perfectly.
When Lynda and I went to audition the 3.7s the sound quality was just SO GOOD and I know that I have better amps and turntable then what they were using so it has to be the preamp. 
There are a couple of preamps in my price range that I'm looking at and I should have some tunes going again this time next week. 
I change out major components so infrequently that this is really exciting for me.  Stupid but true!

kevin360

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Re: Audio Nervosa Conquered
« Reply #44 on: 14 Apr 2012, 03:09 pm »
Hey Steve - it's not stupid (at least, I hope not, because I find it fun as well). Your SF sold pretty quickly ('gon?). I need to get off my duff and sell my Pass X350. It's a great amp, but I like the VAC better. I recently did some minor work on the VAC and put the X350 back in service. I've been really curious about what my reaction would be. To my surprise, I heard more of a difference going back than I did when I put the VAC in its place. It cemented my opinion of the big tube amp - absolutely love it!

The funny thing, though, is that I'm still positive that I could have lived happily ever after with the Pass amp...as long as I never heard what the VAC does for my system. :lol:

medium jim

Re: Audio Nervosa Conquered
« Reply #45 on: 14 Apr 2012, 04:33 pm »
In Magnepan and Tubes I Trust!

Jim

SteveFord

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Re: Audio Nervosa Conquered
« Reply #46 on: 14 Apr 2012, 04:53 pm »
They do seem to like tubes!
I wasn't able to list the Sonic Frontiers on Audiogon as it kept saying my listing had errors (correct the parts in RED and there was nothing shown in red) so I gave up after three attempts and stuck it on eBay.
It's funny how audio gear goes: I recently shipped some American speakers to Norway, bought a Danish cartridge from Germany and am now sending a Canadian preamplifier with Russian and American tubes and a couple of pair of American speaker cables to Hong Kong.
The global economy in action, I guess.
All this was done on eBay. 
Maybe keep the Pass for summer use unless you want something else really badly? 
You know what was nice was the fellow who bought my 1.6s wrote and said that he now has the best sounding stereo system in Norway.  That made my day.

SteveFord

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Re: Audio Nervosa Conquered
« Reply #47 on: 15 Apr 2012, 12:22 pm »
Kevin,
I've been hesitant to post this as I don't want to slam anyone but I was on audiogon yesterday and my PC picked up three viruses. 
I can't say for sure that they came from audiogon but other people have reported similar.

medium jim

Re: Audio Nervosa Conquered
« Reply #48 on: 15 Apr 2012, 03:19 pm »
Steve:

Yikes, maybe that is what happened to my puter.

Thanks for the heads-up....

Jim

kevin360

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Re: Audio Nervosa Conquered
« Reply #49 on: 15 Apr 2012, 05:34 pm »
Kevin,
I've been hesitant to post this as I don't want to slam anyone but I was on audiogon yesterday and my PC picked up three viruses. 
I can't say for sure that they came from audiogon but other people have reported similar.

My brother (Norton360 :lol:) has blocked my opening that site before, but it also kept me out of here one day (a few weeks ago). No website is immune to hacks. I'm sure the recent changes drew a certain amount of ire. Hacks are an unfortunate backlash. I don't surf without protection and I don't click links without analyzing them.

josh358

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Re: Audio Nervosa Conquered
« Reply #50 on: 15 Apr 2012, 09:32 pm »
Kevin,
I've been hesitant to post this as I don't want to slam anyone but I was on audiogon yesterday and my PC picked up three viruses. 
I can't say for sure that they came from audiogon but other people have reported similar.

Yeah, a lot of people were complaining about that a while back. There were some posts on the General Asylum by someone who claimed to be familiar with the situation that asserted that key people had quit in disgust and site security had dropped off to nothing.

SteveFord

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Re: Audio Nervosa Conquered
« Reply #51 on: 18 Apr 2012, 11:42 pm »
The trick to conquering audio nervosa is to throw money at it.
The last piece of the puzzle showed up today, details to follow...

josh358

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Re: Audio Nervosa Conquered
« Reply #52 on: 19 Apr 2012, 12:05 am »
There never is a last piece. :-)

SteveFord

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Re: Audio Nervosa Conquered
« Reply #53 on: 19 Apr 2012, 01:31 am »
Too true.
I do need some isolation transformers...

SteveFord

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Re: Audio Nervosa Conquered
« Reply #54 on: 21 Apr 2012, 01:40 am »
For those who have known me for a while, they'll know that my upstairs system has remained pretty much constant over the past few years. 
1.7s replaced 1.6s, a tube tuner replaced a SS one and that's pretty much it.
I pretty much duplicated the upstairs system in the living room and was never happy with the sound - something was always "off".
IIIAs were replaced with 3.6s which were replaced with 3.7s, VTLs replaced various SS amps, tube tuners replaced the SS tuners, the tube CD player was replaced with an outboard DAC and tube buffer, interconnects were replaced with silver braided ones I made up, Kimber 4TC gave way to Kimber 8TC for the speaker cables, a nice vinyl set up was added BUT something was still off.
My preamp was a Sonic Frontiers SFL-2 (same as the upstairs) and I agonized for a full year over replacing it as I really love the SF gear.
One evening, something strange appeared out of the dark

which kind of gave me the creeps. 
Okay, it was in the form of an ad here on Audio Circle in the Trading Post section.
After still MORE agonizing, a light appeared over my Well Tempered which I took to be a sign to get off my duff and do something.

Never one to disobey the Gods, I did what I had to do.  I sold my SFL-2 to a gentleman in Hong Kong and purchased Markhh2's deHavilland UltraVerve 3.

I'd been interested in this preamp for years as the notion of big tubes equal big sound intrigued me but I had never actually heard one.
Over the years I'd forgotten all about the piece until I spied Mark's ad.
I reread all of the reviews that I could, thought about it some more and here it finally was on my doorstep - sitting in a puddle thanks to my FedEx driver!  Good thing Mark triple boxed it, huh?
I hooked it up and not bad but it could be better.  The sound was kind of bottom heavy and good but weird.
An email to Kara at deHavilland confirmed that I did need to flip one end of my speaker wires around to invert the phase and Mark included an RCA 6SN7 to replace the wretched Electro Harmonix tube.
Sure enough, the bloated bass disappeared, the soundstage snapped into focus and the details in the mix came closer to the front.
You know all of Ruth's vibraphone playing on Zappa's Apostrophe'?  There's a LOT more of it going on than I believe I've heard on anything else.  There is also a lot more guitar work going on - there are a lot of tracks mixed onto that album.
It has the basic crispness of my now sold SFL-2 (which is what I loved about the unit along with the looks and build quality) and it's at least the equal in detail retrieval  of the latest Audio Research preamps but without that "polite" sound that the ARC gear has.
The soundstage is much wider and deeper than the SFL-2 but it's not quite up to Audio Research standards in that regard - it doesn't miss by much but it's not as good.
It also lists for $3500 less and I prefer the overall sound of the deHavilland unit overall. The sound is both smooth and it doesn't have wimpy or exaggerated dynamics, it's balanced from top to bottom thanks to a tube change - this one's just right.
My dealings with deHavilland have been limited to two emails but the response was fast and Kara answered my stupid questions and gets five stars from me.
Buying this was a real gamble for me but happily it worked out perfectly.
I have found the missing piece to the puzzle.
Without the people here on Audio Circle I would have forgotten about the deHavilland and would still be trying to figure out what was "off" with my big system.
Thanks to everyone who pushed me off the fence!

medium jim

Re: Audio Nervosa Conquered
« Reply #55 on: 21 Apr 2012, 03:54 am »
Strange that they would have you set up your speakers out of phase to correct the bass?  But if it works, so be it!

Jim

Brad

Re: Audio Nervosa Conquered
« Reply #56 on: 21 Apr 2012, 04:00 am »
A lot of preamps invert polarity.  The "fix" is exactly what Steve did - swap + and - at the speaker.

medium jim

Re: Audio Nervosa Conquered
« Reply #57 on: 21 Apr 2012, 04:09 am »
Learned something new, but why would a preamp be designed where you need to wire your speakers out of phase?  In other words, what is the advantage?

Jim

jimdgoulding

Re: Audio Nervosa Conquered
« Reply #58 on: 21 Apr 2012, 04:21 am »
Nice work, Steve.  Makes me glad jus reading about it!

SteveFord

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Re: Audio Nervosa Conquered
« Reply #59 on: 21 Apr 2012, 11:34 am »
Thanks, this was a hard decision for me to make as I couldn't afford to try something new without selling off what I had.  Lucky, it worked out really well.
This fellow's review
http://www.enjoythemusic.com/magazine/equipment/0404/dehavilland.htm
is (thankfully) right on the money.
I can now go from MMGs to 1.7s to 3.7s and they all have the same basic level of sound quality even though they're three totally different preamps (modified Carver C1, Sonic Frontiers SFL-2 and now the UltraVerve 3).
It's so nice to just be able to put on some music and be happy!
How this would work with 20.7s I have no idea but that's not something I have to worry about.
I'll ask about the phase inversion for you but my guess is that it has to do with simplicity of the circuit design.  My SF preamp has a phase switch but it never really seemed to do very much whereas this was night and day.