Description

My objective was to assemble an audio system that reproduces a natural and believable sound. Getting a DHT SET amplifier was a big and effective move towards that goal. The tone,timbre and harmonics are very well rendered. I listen to music at home often and for long periods of time. It is an enjoyable and emotionally involving experience. I'm happy with my system.
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Components Toggle details

    • BPT Signature 3.5 plus
    Balanced AC power is fantastic! All aspects of music reproduction are improved for every single component.
    • Tripoint Troy
    Grounding box that among other proprietary parts features a magnetic module. Beautiful, honest tone, density, harmonics and superb resolution. It simply sounds natural and real. The Troy has a humanistic aspect that allows the music to live and breath emotionally.
    • Coincident Speaker Tech Total eclipse 2
    This wonderful speaker is transparent,open and involving. It`s large yet completely disappears as the source of sound within the room.Very easy to drive,94db and 14 ohm load. I replaced the stock Solens capacitor with the Duelund CAST in the crossover.
    • Coincident Statement linestage
    Superb performance. In my opinion , a masterpiece by Israel Blume. As would be expected, a wonderful match with its sibling the Frankenstein MK II.
    • Coincident Speaker Tech Frankenstein mark 2
    A terrific 300b SET amplifier that is the foundation of my system. Sublime with the Elrog ER 300b tubes. Obtaining this amplifier lead to a permanent change of perspective as to how I listen to music with increased appreciation.
    • Yamamoto YDA-01
    Wonderful music lover's DAC that has a very natural/organic sound quality. Duelund CAST addition(output coupling capacitors) makes it sound even better. It has a very minimalist circuit/design that was implemented well.
    • PS Audio perfect wave
    This is an excellent memory based transport. Life-like presentation and quite transparent and natural.
    • Ocellia Silver Reference
    Very natural and pure sounding with excellent tone,overtones and harmonics.
    • Ocellia Silver Reference
    Same qualities/ comments as the IC.
    • Star Sound Technologies Sistrum
    These Star Sound platforms are mandatory in my system. Effectively managing resonance and vibration leads to a very noticeable sound improvement with every component and especially the speakers. Excellent product.
    • High Fidelity CT1 Ultimate Digital cable
    A highly impressive digital cable that mates beautifully into my system. Contributes to the natural sound presentation.
    • Synergestic Research Quantum
    High quality fuse placed in my DAC,amplifier and linestage. Very noticeable improvement of clarity,transparency and presence compared to the standard fuse.Cost effective.

Comments 1900

222222&text=ag
Hey Charles.  Hope you are well.  We moved (neighborhood was not kid safe) and my magic "Energy Room" went bye bye but on a positive note, I did finally snag a pair of Trenner & Friedl RAs along with a Traumatic 300B integrated that is fabulous for an office system I must say:  https://systems.audiogon.com/systems/7635

agear

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Hello Charles. I wonder if there is any capacitor upgrade path to explore with Coincident Line Stage ( ..like you performed in Frankensteins). Any mods for line stage? 
Thanks,
Sam

sstalwar

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Hi Charles - I also have the coincidentally line stage - do you Abbey experience with the Psvane Western Electric 101D replica?

Thank you
Andy

jazzdude99

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Also did you ever get to trying the Coherent Speakers?
- Jukka

jugi63

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Hi there Charles!

I see that you, like I, still have a Yamamoto YDA-01 DAC...  Like you I've also been looking at possible new DAC's (Denafrips Terminator?) but so far after listening to a few more modern DACs than the Yamamoto (including Lessloss Echo), they have not convinced me at all. Do you have a more comprehensive understanding comparing the Yamamoto to others?

I also see that you've tweaked the Yamamoto with Duelund caps. How much of a change has that made? You'd obviously recommend? Did you try other caps?

I also made a tweak which I think made the Yamamoto sound quite a bit for the better: As you know the actual PCBs lay on a "floating" sub panel. Well that panel vibrates quite a lot - so I added 4mm bitumen to the casing bottom panel and tightened it back up so the bitumen just and just supports the PCB panel, thus giving it vibration damping. It's been some time since I did that, but I remember thinking it upgraded the sound quit a bit. You can also 'adjust' the amount of damping by tightening/loosening the bottom panel to your liking. Mine is not completely tightened. You may want to try if you already haven't done this. =)

Also IKEA bamboo cutting boards (the thicker ones) do wonders under the DAC (and also other equipment. ;)

Best,
Jukka
 

jugi63

Wow, SA, apparently I have been.  I'm very curious what I've been doing to the amp/sound with that mistake.  I bought my amp used and think it came with a 6SN7.  Unfortunately the system is in storage for a year, so it'll take some time to find out how different the amps sound once I rectify the situation.  So glad I posted and got corrected.  Thanks.

cal3713

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Hi Charles.

Great system you have. I've been looking at the Frankenstein lately, as my next amp. Very nice system!

lordcloud

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Hi Charles,

I realize that your system's front end is digital, but I can't think of a better person to ask a question about the Coincident Preamp. You already provided me with good answers about the Statement, but do you have any experience or first hand knowledge about the Phono Preamp? After all this time, I just realized that the Phono has a second line input, and does not require a line stage. That's all I need.

Any input would be appreciated, including how the Phono might perform against the Statement for non-vinyl sources?

Kenny

kennythekey

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Chris, are you saying you tried a 6SN7 in place of the 6EM7?  They are NOT comparable tubes.  The 6EM7 is what is sometimes called a dissimilar tube; it has two triode sections but they are different from each other.  One of the 6EM7 sections is a high-gain low-current tube very similar to a 6SL7.  The other section is a low-gain high-current tube more similar to a 2A3 or 45 output tube.  A 6SN7 has two identical triode sections that are medium-gain medium-current.  Very different tubes and not interchangeable.  

Charles, sorry for interrupting your system comments.

salectric

Hi Charles, I think I've read that you haven't noticed any significant changes from rolling the 6sn7/6em7s in your Franks... I had a pair go pretty far out of balance and ended up buying some RCA vt-231 (grey glass military).  They were significantly better than any of the other options (some other old military tubes and some standard rca & GE), something that was immediately apparent to even a visiting friend from out of town.

Best,
Chris  

cal3713

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Charles just wondering if you've auditioned any Audio Note dacs against your Yammie? I had an oops moment on a lark put in what I thought was a way too low bid on an Audio Note Dac3 Signature and won! So its on the way,  going to make some comparisons myself obviously but since I trust your ears wondering if you have any AN dac experience?
Thanks,
Jon

jond

Center
Owner
Oops,
Just realized that you "missed" getting the Frankenstein,  my error. 
Charles 

charles1dad

Center
Owner
Hello Dentdog, 
I just saw your post today!
The XLS  tubes will only provide the additional wattage in amplifiers specifically designed to utilize the increased power.  The Frankenstein is not designed to extract this additional power. It is strictly an 8 watt SET amplifier. I chose to use this tube due to its very rugged built quality and it sounds wonderful in the Frankenstein. Are you happy with the amplifier thus far?
Charles 

charles1dad

Center
Hi Charles,

Just missed getting a Frankenstein locally here. Of note, it was the XLS model that gets 18w or so out of the amp. Just curious, does the increased power being pushed out of the amp compromise the tonality or tube life? Seems like something has to give.

dentdog

Center
Owner
Tony,
Sorry for the typos in the first paragraph, damm autospell feature.  I should have edited before sending 😊. 
Charles 

charles1dad

Center
Owner
Wow! Afc 
Man, I've often wondered what had happened to you,  it's as if you totally vanished one day 😁😁. I hope you are doing well.  Last time we talked I was using the Shuguang Black Treasure tubes and enjoying themselves. I still consider them very good 300b tubes.  Better yet IMO are Takatsuki  (very expensive Japanese tube) and the EML XLS  (experience (European tube). Both are superb in the Frankenstein amplifier.  In the past couple of years I've settled on the EML XLS.  It is exceptionally rugged,  reliable and really mates well with the Frankenstein.  The Takatsuki is a superb choice by any standard and certainly some would prefer it to the EML. 

Bottom line is that you can't possibly go wrong with either,  the EML XLS is less expensive and for me pushes all the right buttons in my system. I also tried the German Elrog 300b, again expensive with superb sound quality but proved to be unreliable with the Frankenstein circuit 😣. The EML is a workhorse type of tube that possess wonderful sound.  Field reports say that it has a life expectancy of 40,000 hours due to the heavy duty construction. 

Tony,  the Coincident Statement Line Stage is honestly fantastic and obviously a natural match with the Frankenstein.  I have not heard the EAR preamplifier but it has earned much praise over the years.  I don’t like to say that "this blows that away " just too many factors and personal preferences to talk in that manner. The CSL is utterly pure and natural sounding and exceptionally open,  dynamic and transparent  (just like the Frankenstein). Tony it's so good to hear from you. 
Charles 

charles1dad

Center
Owner
Hi Dentdog,
I just saw your post today! Sorry about that. With the changes to the audiogon virtual systems section I find it more difficult to know when I receive new comments/postings. Based on Equi- Tech's reputation I'd feel very comfortable with them  for sure.  Balanced AC power is terrific IMO foraudio systems. 
Charles 

charles1dad

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Charles,
Been a loooong time. Moved a couple times, getting settled again finally.
Wanted to ask- how do you like the Coincident Linestage pre? I still have the EAR 868....Israel told me there is "no comparison." Which is what I expected him to say...both are solid preamps.
Also, I see you went with new power tubes on the Franks. May I ask why, and what have you experienced with the switch?
Regards,
AFC

afc

Center
Charles1dad,
I have a question, not related to your system, a balanced power question.
I haven't been able to pick up another BPT 3.5 and would like to run my Mcintosh MC60s off  balanced power. I have located an EQUI=TECH ET2R, puts out 20 amps. Do you think this would be more than ample for the amps?
Thanks in advance.
BTW very nice system. When I can find the funds I plan to go the SET route.

dentdog

Center
Owner
Hi Joe,
Sorry but I didn't see your post until this morning  (I don't like the new format for virtual systems ). No I didn't have the red tube plate issue you describe. I did develop a cold solder joint that had to be corrected. Joe you can post on my system page regarding any topic at any time. I just wish we could have notification of new postings on our system pages. 
Charles, 

charles1dad

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Hi Dave, 
They measured 1.3k with my meter and they are 25watts. The joints look good, could it be that the auto-bias could go out of range with the higher value resistor?
I don't want to high jack Charles site. Can you give me a call or text me?

Thanks,
Joe

snopro

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Also check that the bypass capacitors are properly soldered back in...no cold solder joints.

jetrexpro

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Also are the resistors you put in at least 20watt rating? If not they could be burning up and that would be what you smell. Resistors should not smell unless they are getting too hot.

jetrexpro

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Joe, perhaps they are not 1.2k restistors. Did you measure them before putting them in? Maybe they are a much lower resistance like 1.2 ohms? It's unlikely but is it possible that you have cold solder joints on both resistors? Perhaps the grid resistors on both channels became unconnected during the job? All of these would seem unlikely since the plates on both tubes are becoming red. The most likely thing I can think of is the resistors are the incorrect value.

jetrexpro

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Charles,
Maybe you could help me out. I changed the cathode resistor to a 1.2k. Before I tried my better tubes I put in the original chinese tubes. Once I powered up the amps I noticed the plates of the tubes to glow reddish, but sounded fine. I played music for about 4 hours with no trouble. I had no smoke coming from the amps, thank god.
Do you remember if that was normal with those tubes. Also did you get a smell like new components breaking in from the new resistor?
Any help would be great.
Best,
Joe

snopro

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