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41
Cables / IEC C15 Connector wanted
« Last post by onthebeach on October 07, 2017, 03:09:20 PM »
I have a nice long length of Yamamura power cable I have bought via SG and I want to cut it in half ( :-\ ) and make 2 cables out of it for my 807 amps I've recently bought from Falls audio.
I have the Furutech IEC the cable came with and I have 2 Aus AC plugs. So I just need one C15 IEC.

Any recommendations for a cheaper quality connector without me buying a new Furutech??

If anyone has a spare quality one laying around I would be interested.

cheers

nath
42
Cables / Re: Comparison Of Yarbo And KLE 3 Power Cables
« Last post by onthebeach on October 07, 2017, 11:39:56 AM »
Hey Bill nice review. I haven't tried KLs PCs yet but I'm keen to give them a go into my new Falls audio 807 amps. I'm using Yamamurra PCs for Wadia transport and Kdac and Falls audio PCs into amps. I've just got some more Yamamura PC courtesy of SG to make up a couple for the amps so will see how that goes.
I've got KL ICs and SCs via Rawl and they are very very nice indeed.
43
Cables / Re: Comparison Of Yarbo And KLE 3 Power Cables
« Last post by stevenvalve on October 06, 2017, 08:44:17 PM »
I had the top KLE  interconnects here, and they sounded very natural and organic, musical warm smooth very good indeed, my only complaint was they could be a little more transparent, but over all just great, but so was the price tag, but considering the stratospheric price tag some company's sell there interconnects for, quite reasonable.
44
Cables / Comparison Of Yarbo And KLE 3 Power Cables
« Last post by bhobba on October 06, 2017, 03:17:51 PM »
Hi All
 
This is what me, Rawl99, and two others that were there (one a Hi Fi nut like me and Rawl - one just with an interest) heard when we compared the following two power cables:
https://kleinnovations.com/kle-innovations-klei-products/klei-ac-architecture/klei-gpower3-ac/
http://www.ebay.com.au/itm/YARBO-Audiophile-GY-9000PW-Cable-Cord-Per-1M-Germany-Hi-End-/151290418439
 
The system was as follows:
1  Heavily upgraded Wadia Transport
2. Killer DAC - two were tried mine and Rawl's - Rawl's has had a few more tweaks done and was better - that so and so.
3.  Heavily upgraded cheap Chinese power amp.   Up there with the best I have heard eg the BHK, heavily upgraded Prima Luna Dialogue etc - not as resolving as those amps or with as much 'aliveness' but a really nice textured sound.
4.  RCA cables and Speaker cables also from Keith Eichmann - but I cant recall which ones they were, but knowing Rawl almost certainly some of his bettter ones.
5.  Fully specked ML5 Reference with Duelund VSF Copper for all capacators.
6.  Most stuff was on isolation springs to absorb vibrations.
 
The power cable was into the amp.   When I arrived, it had been playing for a little while but sounded pretty sweet - quite harmonically rich and textured.  Rawl calls it harmonic resolution - I call it what I said - rich and textured.  Think sterile and Hi Fi'sh - its the exact opposite.  Some like that sort of thing though - sorry for using the word sterile if you are in that camp - you would likely say uncolored - not that I thought the sound I heard was colored - but different things float different peoples boat and describe it in different ways.  This being the Killler DAC forum I am pretty sure what floats guys that post here boat - and it not 'sterile'  :P :P :P :P
 
We listened to a fair bit of different music including my reference - Dianna Krall - Case Of You.  Voices lovely and alive but not lacking in detail - beautiful engaging sound that seemed to get better as the system continued to warm up.  Rawl is biased of course but had recently been to the Munich show and thinks it was at least as good as any system he heard over there - but then again he is very very critical.   He is the type of guy that will tell the brutal truth - when listening to a million dollar system if it sounds like rubbbish to him he will say so.
 
OK time to try the Yarbo.  We put it in but then sojourned to Sizzlers for some dinner so it could settle.
 
When we returned for me:
1.  It was flat and dull.  Gone was the richness and texture.
2.  It had a sort of metallic sheen - that's the only way I can describe it
3.  Detail seems unaffected - the non Hi Fi person there plays the piano and said she thought the piano now sounded more lifelike.
 
We played through the same songs and for me it was all the same - maybe the best way to describe it is the Yarbo was Hi Fi'ish - the KLE more emotionally satisfying.
 
We then put the KLE back and gave it time to settle.  The same as before - but as the evening wore on things seemed to open up more.  It still had the same richness and texture but the detail came more apparent.   The piano person now thought it was sounding more like a real piano.
 
There is a big difference in the price of these cables.  Is it worth the difference?  I don't know - I would pay the price difference (the KLE now belongs to me - I bought it) but that's just me.  You must listen yourself to see if it does it for you.
 
Thanks
Bill
Edited just now by bhobba
45
Other DACs / Re: CD player upgrades
« Last post by vitavoxdude on October 05, 2017, 02:26:23 PM »
With all the time on my hands what with no work here in WA I have been tinkering around with an Orelle Evo cd player.  It was 1250 UKP back in 2004 when new so one would have fairly high expectations for it, but it never rose better than a very average product IMV.  Build quality is lightweight and has a decent toroidal transformer for the main board and a separate small plate and frame transformer for the digital board (s).

So I raided the parts bin to see if it could be made to sound better bearing in mind different does not always equate to better.  So first the transport which is an uninspiring VAM 12 mech clearly bought in and unchanged rather than the better Phillips swing arm CDM series.  The laser assembly has a large daughter board beneath it which has an additional crystal lock mech which appears to be a standard 'off the shelf' board. Out went all the crap 10 cents caps and in went Oscons and Silmic 2's.  Put it all back together and yup, a slight but very welcome increase in clarity, air and precision., hmmm I think, well what's next.  The audio side of Chris Bryant's work is usually a labour of love but I note the bog standard voltage regs and the crappy output op amp.  So solder sucker to hand and wham the op amp, an LF353 is out and rapidly binned in favour of a sparkos lab SS3602.  This has a footprint only slightly larger than the dual in line socket it fits into so was chosen above the Burson and the Audio Guilds Moon or Sun opamps due to size.

So replace the main board, hook up all the ribbon connectors and insert into a Valve pre and power system driving JBL's and it.................woooo, far to hard and bright,yuk but I persevere for a couple of hours......... just as well I did as now things begin to smooth out and I immediately heard more detail but it was of the undigested kind, not smooth and well formed. Crikey had I just cocked it up?  Well it turns out to be a big fat no.  Given 6 hours or soo and it now starts to revel what it's capable of.  Solid state at its best will never be as good as valves IMO can get, but it is now sounding really nice and it has some of the walk in soundstage of Marios system with its tiny speakers  well into the room (sadly missed).

So what's next?  Well the main crystal clock is still the dollar toss away crystal so a replacement clock c/w separate power supply is next which I also just happen to have in the parts bin. There luckily is enough space in the front of the case to mount the transformer and crystal board (audio guild) It also has some nasty metal film resistors in the OP stage so they will be replaced at the same time.  I will try some slit foil Vishays and some Allen Bradleys for a comparison.

Whilst I would not rate op amps in the same league as the killer Dacs OP stage these Sparko labs may just lift your game enough to enjoy your old CD player as I have.  They are not particularly cheap, here the Audio Guilds Moon, Sun and Earth opamps are around 1/3rd the cost but when space is limited maybe the new bursons will fit.  As I have all these opamps, IMO the Sparkos edge out the others with their greater space,  dynamics and clarity.  They actually made me jump with one recording which has to be good - right?

I am currently listening to Bill Evans and Stan Getz play together and I am really enjoying it - that's almost sacrilegious for a Killer Dac owner to say, but I am smiling and its only been on for what 20 odd hours. I am put in mind of the old joke,

...................."stand back eve - I don't know how big this thing is going to get" - ha ha.................................
I am in no way affiliated with Sparkoslabs, but feel they are worth mentioning if you want to inject some new life and enthuisam in older silver disk spinners.

http://sparkoslabs.com/discrete-op-amps/

The Audio Guild clock with a better 'class a shunt regulated power supply' is next, I can hardly wait but I want the latest round of changes to settle in first, then onwards again.  I hope the clock brings similar gains to Mario's old Zen clock which I will NEVER forget, yes it really was / is that good.

Pictures to come when next ripped apart.

46
Suppliers / Re: pure red copper?
« Last post by yarhevarhe on October 04, 2017, 07:51:21 PM »
I wonder if Faraday and Newton would  succeed with setting up a sensational audio system?    Thiele and Small were very clever, thank goodness for their research, they were very clever, indeed.   There have been many clever researchers, thank goodness for their research, they have been very helpful, indeed, but I wonder how much has been lost? 

So, what exactly is pure red copper?    I guess it is a mystery like Alpha copper?   The mystery, continues? 
47
Amplification (Pre/Power) / Re: How to Build a killer Amp
« Last post by kajak12 on September 25, 2017, 09:00:14 PM »
I have replaced the Jensen 4 pole 385v- 470uf electrolytic with an 680uf to lower the noise floor, but the 680uf has a lower voltage, so check your voltages. Remember the rule is, doubling the cap size means lowering the noise floor by half, that is important because with no feedback and direct AC heaters you have to lower the noise floor without hurting the sound. Its always a battle the work out how to do that.
If i was anactive member on SNA i would post this and ask the almighty zb for advice :-*
48
Amplification (Pre/Power) / Re: How to Build a killer Amp
« Last post by stevenvalve on September 25, 2017, 07:14:18 PM »
I have replaced the Jensen 4 pole 385v- 470uf electrolytic with an 680uf to lower the noise floor, but the 680uf has a lower voltage, so check your voltages. Remember the rule is, doubling the cap size means lowering the noise floor by half, that is important because with no feedback and direct AC heaters you want to lower the noise floor. Its always a battle to work out how to do that without hurting the sound.
49
Amplification (Pre/Power) / Re: How to Build a killer Amp
« Last post by stevenvalve on September 25, 2017, 12:54:46 AM »
Ha ha Rab, it is a fun journey. Perhaps we will have to build you one!
Steve has been such a great help, let alone a treasure trove of useful information.
I have updated the schematic and will post some images of the amplifier soon.
Best to run around 300v/0/300v to the rectifier. 400V/0/400v will probably have to much voltage, especially if you run the 15uf cap on the voltage out of the rectifier. The 15 uf cap is needed to lower the noise floor but it is a case of diminishing returns, a bigger cap will probably not lower it much more anyway, but it will not hurt. The other advantage of the 15uf cap is you get a voltage increase and that will allow you to run a lower voltage mains transformer. The UX250 or type 50 is good for 450 volts, but dont run that because that will shorten the life of your hard to find UX250 globes and could make them sound stressed. I run 250v/0/250v and that gives me around 280v-300v at the valve. the B+ switch is used to let the valves warm up before adding the currant, helps the valves last a lot longer. I must say my UX250 globe amplifier running this circuit is so good it is the end game for me, it really does sound real, but to get it there you must use the right bits and tune it correctly. My PX/4 amplifier is running the same circuit and same parts combination.
50
Amplification (Pre/Power) / Re: How to Build a killer Amp
« Last post by Pixelplay on September 25, 2017, 12:19:26 AM »
Ha ha Rab, it is a fun journey. Perhaps we will have to build you one!
Steve has been such a great help, let alone a treasure trove of useful information.
I have updated the schematic and will post some images of the amplifier soon.
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