casouza

Responses from casouza

Amp help with a B.E.L. 1001 Mk.II
HelloI am 100% certain that ANY decent analog preamp will improve your system's sound quality, even an inexpensive passive one, because your CD player's volume control is digital, it throws bits (therefore resolution) away as you lower the volume. 
845 recommendations from actual experience
Usual disclaimer about KR 845s: their filament current specs are not according to the original 845 specs, these tubes will go south quickly, unless the amplifier is modified. 
How do I know when to replace Melos SHA - 1 Tubes
Nsgarch, no need to pay U$ 300Try Upscale Audio Gold Grade tubes.Best wishes 
"Best" 12BH7/A tubes?
Yogiboy12AU7 is pin-compatible with 12BH7 but not equivalent. For example, if the 12BH7 is used as a driver tube, a 12AU7 will not do.Best wishes 
Use Battery Backup For Preamp and TT?
Davespectral, I suggest that you connect the strobe to a different outlet (not one supplied by the true-RMS UPS), then any frequency variation will be easy to see. Have fun 
How do I know when to replace Melos SHA - 1 Tubes
Hlt,"How can I tell if my tubes need to be replaced? "If you hear excessive hiss, hum or microphony, replace the tubes. Also, if there is a noticeable channel imbalance, you should consider replacing the tubes.To 100% sure, swap the tubes between ... 
Gryphon Colosseum vs. Karan M2000 monoblocks
Sidekick, when comparing amplifiers + speakers, remember to factor-in the source. Magico does most of their demos with reel-to-reel master tapes, which gives them a HUGE head start (better, cleaner, more musical than CD or LP).I have not compared ... 
Why does Cary Audio keep discontinuing good amps?
I have heard of two SLP-05 failures in my neck of the woods in the past 12 months. These tubes are supposed to last for ages, 10 years for new production, 25 years or more if one is lucky to find an NOS Mullard rectifier.Look how cramped and poorl... 
Gryphon Colosseum vs. Karan M2000 monoblocks
This may help your decision: Gryphon strives for maximum detail and transparency while Karan amplifiers are in the Pass/ Classé / Plinius / McIntosh camp: plenty of musicality, smooth sound and just enough detail to sound really nice but not overc... 
Magnepan 1.7 too bright, HELP
Everyone and his uncle knows that Maggie speakers require lots of current. Anticables are too thin to carry the required current.Also, regarding the alleged brightness, I have heard 1.7s and believe it is NOT a level issue, it is the effect of the... 
Why does Cary Audio keep discontinuing good amps?
Two more reasons:The Cary 120 amp needed a re-design because it runs too hot inside the chassis. The british press caught it, the american press went GA-GA over it.The SLP-05 preamp has a Tube Engineering 101 mistake: the tube rectifier is mounted... 
Best 845 tube out there?
Szyckf and Amfibius, as far as I know there are no commercial 845 amplifiers that use a regulated filament supply. Not Cary, not Audio Note, nor ASL. The schematics can be found on the web.Most DHT amps use a diode bridge > capacitor > resis... 
What will raising the Va of atransformers provide?
Thanks, Stanwal, excellent explanation. Class A amps are fully on (conducting 100% of the rated power) most of the time, therefore the power transformer, rectifiers and power supply capacitors must be over-specified, in order to supply the high cu... 
What will raising the Va of atransformers provide?
If your amp runs in pure class A, there is no benefit in upgrading the transformers besides slightly less internal heating of the transformers.If your amps are the more popular class AB or AB1, depending on how good was the design to begin with, y... 
How Much DC is OK on a Power Line?
Jea48, its easy to measure DC on top of AC if one uses a Fluke RMS meter. My Fluke 77 measures it accurately. I see less than 100 mV at most friend's homes.I have seen a few noisy power transformers (including toroidal ones) when DC measures more ...