petg60

Responses from petg60

Rega Apheta 3 on Rega Planar 8:  Any idea on screws torque values ?
I remember that Rega used to sell a torque wrench set for their cartridges.  
A quick question related to Amperex Bugle Boys
Something more to add on @tsushima1 good comments. We have to know the initial figures of a tube, when brand new. Suppose initial readings were 130/130 so 98/96 represents approx 75% of that value, meaning that the tube is closer to end of life ... 
Changing Tubes
More air and bigger soundstage if possible  bigger soundstage = siemens, voskhods, reflektor More air = amperex, raytheon, french made 88, tesla, telefunken Above are only my general observations and as  i am not familiar with your preamp you m... 
Changing Tubes
When a tube is upset mechanically by external vibrations and those are passed into signal. Due to construction most signal tubes are inherently microphonic but their location on a board can expose this phenomenon further. Effects are feedback, ri... 
Changing Tubes
There are many great tubes in the 88 family but these four would be sonically my first choice. Voskhods 6n23p 1975-1977 period (best bass, flow, effortless, extended, holographic), my best choice and the greatest value, fit and forget. Siemens E... 
Forgotten heavy bands from late 60's to early 70's
An other one is Gravy Train, Gravy Train @1970, something between Sabbath and Jethro Tull  
tone arm with 10gr mass with 15 gram weight cartridge?
You can practice on the calculation chart that @yugiboy has posted.  
Tubes becoming hard to get?
A perfect world. Always keep spares. Ebay sellers are not worried and are happy.  
What should I be looking for when buying my 1st Reel To Reel ?
You can also check Tapeheads.net for good info.  
tone arm with 10gr mass with 15 gram weight cartridge?
μm/mN=...X10-6cm/dyn=cu effective mass of tonearm, cartridge mass and cartridge compliance, should produce the desired resonance frequency. and at the end of the day if sound quality is good (most important) then you forgett all the formulas.  
tone arm with 10gr mass with 15 gram weight cartridge?
and what about the cartridge weight to match the arm mass? Make sure though that counterweight is ok to balance the arm.  
tone arm with 10gr mass with 15 gram weight cartridge?
what is important = Resonance frequency within 7-12Hz, mostly it would do the trick. (The RF has to fall down into a precise interval of frequencies: some say between 8 -12 Hz, but reasonably it would be better between 9 -11 Hz). And yes the gene... 
tone arm with 10gr mass with 15 gram weight cartridge?
Some manufacturers use "compliance unit" or CU as simpler abbreviation, but it means exactly the same thing as the others.    
tone arm with 10gr mass with 15 gram weight cartridge?
With that tonearm effective mass plus screws and that cartridge weight you should look for a cartridge with 15cu compliance to get approx 8,15hz resonant frequency. Anything between 8-19cu would be ok, having a range of resonant frequency between... 
What should I be looking for when buying my 1st Reel To Reel ?
Spares availability, ease of maintenance, condition of unit and heads. These were three things i checked when bought my Revox B77II (second hand). A good technician is required to align and check the deck (for your preferred tape also) as most l...