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georgehifi

Responses from georgehifi

Parallel SET with sufficient power
George, are you sure that TubeGuru amp actually has a 4 ohm tap? Hi Al, yes when I Googled those amps one of the forum/reviews? said to use the 4ohm tap for hard to drive speakers. And the feedback is adjustable from 0 to some 30db That’s what le... 
The best coupling caps in power amp ?? Mundorf, Infinicap ??
Do your homework, as you’ll find that one or two expensive "boutique" caps mentioned are very likely just re-branded Solens (which are far cheaper) compare diameter/length/lead length for the same uF and voltage and you will see why. Cheers George 
Parallel SET with sufficient power
Sorry Ralph I was talking about driving the OP’s speakers with two low 3ohm impedances around 50hz and 150hz, my experiences and measurements on the same amp a 4 ohm tap output tap has a better chance of driving a speaker that dips to 3ohms in the... 
Denon DCD-2800AL CD Player What is it
If your wondering what DXD is here a snippet from Stereophile."The only reason to use DSD is that you get a smaller file, because DXD is better. No disc can hold a DXD album. This is why no one knows about it, because it has to be downloaded. Most... 
Denon DCD-2800AL CD Player What is it
Classic R2R Ladder Multibit based converters 4 x PCM1702 very nice, if designed well with half decent I/V and output stage, should sound very good on PCM recordings IE: Redbook CD 16/44 or 24/96 and also DXD if they come on disc.PS the 1650AR also... 
D'Agostino vs. Ayre
D'Agostino vs. AyreTo anyone who has heard the D'Agostino Momentum series amps and the latest Ayre MX-R Twenty, care to compare and contrast the sound?imgoodwithtools Sound differences would also come down to which loads these amps are seeing. ... 
Parallel SET with sufficient power
 My 211's boast 85 watts of a tube power, but when I tried them on a speaker that dipped down to 4 ohms in the lower mid - bass range, it resulted in an anemic balance. This could very well have been the output transformer, being 8ohm. If it ha... 
Parallel SET with sufficient power
Parallel SET with sufficient power Parallel GM40's monoblocksMore power better sounding tube. And has 4ohm taps.The negative phase angle of the Kefs is not severe, so the amps should drive them well. http://www.tubeguru.eu/poweramplifiers-/gm-7... 
Why are the Infinity IRS, Reference 1b, Beta ect speakers passive on the mids and highs?
The pots were poor. Pots are always a problem when old in any speaker, you replace the pots with appropriate resistor L pad power resistors of the same values for your preferred setting.Cheers George 
Why are the Infinity IRS, Reference 1b, Beta ect speakers passive on the mids and highs?
The quality of the passive xovers in those higher end Infinity’s were beyond reproach, and for the mids and highs far better than listening through the half a dozen opamps per channel of an active xover. But for the bass, yes by all means use an a... 
What CD player/transport has the most stable mechanism?
What CD player/transport has the most stable mechanism? Teac Esoteric VRDS can't beat it supports the whole disc.http://usr.audioasylum.com/images/0/1191/p03_vrds_neo.jpg Cheers George 
Why are the Infinity IRS, Reference 1b, Beta ect speakers passive on the mids and highs?
Why are the Infinity IRS, Reference 1b, Beta ect speakers passive on the mids and highs? I think they found as I did. (with both ways bi-amped)I found good passive 18db xovers on the upper bass/ mids and highs of my Martin Logan ESL Monoliths III... 
ATC ACTIVE VS PASSIVE
Very different that hasn’t been discussed, is the active has better sharper active (-24db) xover slopes compared to the passives (12db-18db), which means the drivers are working in a better part of their frequency range, should equal less distorti... 
Usher R1.5 should I buy?
Your Usher has a fet inputs at 61kohm loading with a fair amount of gain. I would suggest a low gain preamp like a Schiit Freya for $699, bonus is you can use it as straight passive, a tube, or a solid state (to suit your moods? maybe) and it has ... 
Synergistic Red Fuse ...
+1 ptss, and I’d say every tech on this planet would say so too. And they are the ones that design the equipment we all listen to. And here we have a few voodooists that have next to no tech skills at all saying they’re wrong. It’s really sad to t...