atmasphere
Responses from atmasphere
| Tannoy Westminster amp matching question. We found that our little amp with 30 watts sounded fine on them but our next amplifier up with 60 watts did the job a whole lot better. I am really of the opinion that the speaker is a lot happier with a little power behind it. Most SETs IMO just ... | |
| Can voltage be mixed with coupling caps? Just be aware that multiple caps can cause smearing of the signal due to differences in the parts. Usually its best just to give it your best shot with a single cap than to make up a value with paralleled parts. | |
| Einstein A fifth option is to have the amplifier updated with a balanced input. Its not that hard (finding a place to put the connector is the hardest part), its cheap to do, does not change the character of the amp, does not use transformers, and does pro... | |
| Skeletal vs Plinth style turntables I tapped the armpod and shelf (plinth) with a metal object whilst the stylus was on a stationary record...and the tone of both was near identical.I was referring to the sound you get not through the speakers but just the sound of the metal itself ... | |
| Amp Re-cap The half life is about 20-25 years, IOW about half of them will be needing replacement after about that time. Low temperatures during operation and frequent use both help extend the life. If in doubt, change the parts.Hum in the amp or preamp can ... | |
| Anything as " fast" as SPECTRAL gear? Is "fast" a desirable attribute?Yes. The human ear/brain system has a tipping point wherein if the reproduction of music is not 'fast' enough, the processing moves from the limbic system (emotional center) to the cerebral cortex (intellectual cent... | |
| Importance of recapping a SS amp? Never heard of this been using power amps for 40 yrs.In that case you are running the amp on borrowed time if its been the same amp that whole time! | |
| Skeletal vs Plinth style turntables Halcro, I can't make out from the photo how that cutting lathe is set up. Our lathe incorporates the platter bearings and the bearing track for the cutter head itself as a single piece of metal (which is quite massive). With regards to the photo o... | |
| Anything as " fast" as SPECTRAL gear? My understanding is that for the most part sonically, slew rate correlates to bass performance and rise time to treble. This is what I've been told by the tech who's worked on some of my amps.Actually slew rate has almost nothing to do with bass, ... | |
| Motorboating after tube change Motorboating is an indication of a power supply problem.My theory is that the different tube somehow was able to do some damage, but it is not obvious how upon looking up the two different tubes. So it could be coincidence, but at any rate you are... | |
| Phono stage matching - how critical Lewm - Minimum should be 1:100 ratio between the two. It is supported by more than one manufacturer.Standard engineering practice is 10:1. | |
| Skeletal vs Plinth style turntables Here is the issue in mechanical engineering terms. It is not a lot different from the steering and suspension of a car.In a nut shell:the plane of the platter must be consistent with the plane of the cartridge. As the arm moves the cartridge must ... | |
| Anything as " fast" as SPECTRAL gear? 'Fast' often refers to risetime or slew rate. Spectrals have always been very 'fast' in this regard. 100V/microsecond is generally considered 'fast'.Most tube amps are 'slow' by comparison- 15V/microsecond being typical. Our amps are 600V/microsec... | |
| Preamp: adjustable impedance + GAIN You just want the lowest output impedance you can get in the preamp.What is actually just as important is not so much that the output impedance is low, but also that it is the same at 20Hz as it is at 1KHz or 20KHz.If balanced, best results will b... | |
| Refurbish a Dynaco St70 ARC was a spin-off of Electronic Industries. EI is still in business today, but has switched over to making circuit boards. |