ferrari

Responses from ferrari

Threshold/ What is the Stasis topolgy?
Unsound - Below is the actual US Patent Office file from Nelson Pass on this technology.United States Patent 4,752,745 Pass June 21, 1988 --------------------------------------------------------------------------------Opto-isolated bias circuit fo... 
Threshold/ What is the Stasis topolgy?
Definition of Optical Bias on Threshold Amps is below.In the case of my patent #4,752,745, an optocoupler is usedto transmit the value of the bias current to an earlier stagewhich contains the bias circuit. It works very convenientlyto keep the bi... 
Review: Rega Planar 3 Turntable
Great posts to this thread, thanks to all respondents.On the subject of motor or gear oils. One has to keep in mind these are not mean't for low speed application. None of these lubricants will ever reach their thermal viscosity rating at low spee... 
Review: Rega Planar 3 Turntable
The second modification was the Deep Groove sub platter and that made a major difference. Although a bit pricey it is well worth its costs and gets the speed right on and reduces drag on the belt and motor pulley. After that added to Iron Audio Ac... 
Review: Denon DL-110 Cartridge
Either the Denon DL 110 or 160 are superb budget MC phono cartridges. The tapered cantilever on the DL 160 reduces the mass at the diamond, allowing better tracking and quicker response to the grooves and the ability to use less tracking force. Wi... 
Coping in an Age of Uncertainty
It is true that no portable medium can ever capture the essence of a home setup.However the portable medium does not have to sound like the dreck it is. At this point in time there is not any incentive for the manufacturers to raise the bar of dev... 
Coping in an Age of Uncertainty
Let's see been in this hobby since 1957, been married since 1969 to a former aka March 68. Have seen just a ton of gear in those 47 years. Some of it really stellar and has made a dramatic impact on the world of audio. One of the young guys I work... 
Threshold/ What is the Stasis topolgy?
From the Threshold Service Manual. 16 Amps continous with 40 amps peak. Bout as bullet proof as it gets. Produced from 1980 to 1984. 1984 was the Series II propagation. Have never seen one of these fried. However this amp is very unforgiving if th... 
Review: Threshold NS 10 Preamplifier
Have just found out from Jon, that the NS 10,that is the subject of this review is a Threshold prototype NS 10, with the blue and gold circuit board and other refinements not found in the production units. Fortunately he has not only the knowledge... 
Threshold/ What is the Stasis topolgy?
While delving through some of my Threshold archive papers the following was found on the Stasis topolgy.Single or dual channel, non-phase inverting audio power amplifier employing circuitry to suppress voltage and current variation and enable perf... 
Review: Technics SL-1200Mk2 Turntable
Ed - No sense in flogging a dead horse. However the Technics tone arm EPA 100,250 or 500 on a Rega or a Linn. Now that would be very interesting indeed. 
Review: Denon DL-160 Cartridge
Eager trader do try the JA Michell Tecno counter weight,really brings the the Rega tone arm to a much higher level. May want to try some other Rega upgrades such as the Iron Audio Acrylic Platter which is vastly superior to the glass platter.Just ... 
Review: Threshold 400a Amplifier
Found some technical data of the Threshold 400A for the tech minded among us. Not the usual specs one sees from a manufacturer. But then again Threshold under Nelson Pass was not the usual manufacturer. What really mattered was the music and this ... 
Review: Threshold 400a Amplifier
Dr. Joe:Yes the Threshold SA 3.9e would certainly fill that requirement. However the SA 3 if you can find one is sonically better. I have heard both and the SA 3 justseems more musical that the SA 3.9e. But also considerthe newer Pass Labs Aleph 3... 
Review: CM Labs 914 Amplifier
Many thanks to pvanrook for posting pic of the CM Labs 920 power amp. Appears to be a higher powered version of the 914C power amp,front panel almost the same. These were used mostly for commercial application such as studios and concert hall appl...