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Old 26th February 2011, 08:57 PM   #31
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Russ - aaarrrrgggghhhhh...when will it end, it's enough to drive a man to, well, beer! Seriously though, great work, looking forward to v3.

Friday is another brewing day I think, a homebrew variation on Stone's Oaked Arrogant Bastard is called for I think, can I get enough grain into my 5 gal cooler though?

Cheers!
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Old 1st March 2011, 12:53 PM   #32
Sync is offline Sync  Serbia
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Russ
It seems to me that you referred VR1 and VR2 to -15V not GND with 10R value... Correct?
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Old 1st March 2011, 03:30 PM   #33
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Russ, is Legato's 3 bass presentation closer to the IVY's III - lower and faster?
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Old 1st March 2011, 04:10 PM   #34
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Default great question

^^^

Great question. I tried Legato v1 and just couldn't give up the IVY III's awesome bass.
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Old 1st March 2011, 11:42 PM   #35
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Quote:
Originally Posted by Sync View Post
Russ
It seems to me that you referred VR1 and VR2 to -15V not GND with 10R value... Correct?
That is correct. keep in mind that these do not serve the same functio as they did on legato 1/2.

With Legato 3 the inputs are now always referenced very close to GND.
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Old 1st March 2011, 11:44 PM   #36
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Really the bass should be almost identical between IVY III and Legato III. There are no AC coupling caps to introduce phase errors.
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Old 2nd March 2011, 12:41 AM   #37
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Default ok

Sign me up! Beta program?
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Old 2nd March 2011, 11:41 AM   #38
Sync is offline Sync  Serbia
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Quote:
Originally Posted by Russ White View Post
That is correct. keep in mind that these do not serve the same functio as they did on legato 1/2.

With Legato 3 the inputs are now always referenced very close to GND.
Schematic?
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Old 3rd March 2011, 09:57 AM   #39
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Default Legato caps/ dc and TVC

hello
progress! even before I tested my L 2s! I guess thatīs part of the game
just a few quick Qs:
can I run the L2 without caps or maybe even L3 into my Stevens&Billington TVC ?
If I canīt; whatīs the lowest value I can get away with on the output caps on L2 ?
If I can will the bass in cap-less L2 be close to IVYII as well?
thxs for great products
best
Leif "waiting 4 new usb module" Christensen
Norway
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Old 4th March 2011, 01:58 PM   #40
needsp is offline needsp  United Kingdom
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Hi Russ

After successfully distinguishing left from right ( ) I fitted some TP0604 triples to my Legato. Result- a surprisingly big step forward! Everything sounds even more real. For example, the decay of percussion instruments sounds genuine, and timbre accuracy of all instruments improves too. The fine structure of the decay of e.g. violin notes is even more apparent and pleasing. Fabulous. Great for performance to match theoretical expectations too- it's not always the case in my experience. This is despite wrecking one of my negative rail supplies during the mods, and so, while I await repairs, my PS arrangements are not as good as they usually are- so more to come, I should think!

I had settled on 3n3 for the filter caps, and 1n for the compensation caps. Will try 2n2 for the compensation, as you suggest. BTW, I'm using Panasonic ECHU caps in these positions- SMD types, soldered as close as possible to the FETs as possible. I scrapped some of the protective lacquer off appropriate tracks to allow this. Sounded very good to me. (I'm also still using Pass B1 2Ssk170 FET buffers on the outputs, before the op amp, the metal can version of the latter, and the CCS on the current mirror transistor. Sorry! )

Many thanks for Buffalo/Legato. I had no idea that red book was capable of this quality of sound. What high higher res material I've tried- and in fairness I've not tried that much, just some DSD data from SACDs, and some 96/24 PCM from DVD-A- hasn't blown me away in comparision.

Thanks again

Paul
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