themadhippy Posted February 15, 2010 Share Posted February 15, 2010 Dont know about class T but wot is class TD that lab gruppen seem to use Link to comment Share on other sites More sharing options...
Simon Lewis Posted February 16, 2010 Share Posted February 16, 2010 Does anyone know of a class T amplifier in the pro-audio market? Chris, According to Douglas Self, "Tripath Technologies called their approach to Class D 'class T' ". It wasn't a new topology, just a trademark. I'm not sure if the company survived filing for chapter 11 protection in 2007. TMH, Lab Gruppen state, "The TD stands for “tracking class D,” which means that the power supply tracks the audio signal at all frequencies, supplying the required rail voltage while at the same time reserving additional headroom. The high-speed switching principles of class D are employed as well, though the final output stage remains a proven class AB component. The entire audio path remains analog, with the signal never converted to digital pulses and then filtered as in some class D designs. Very high efficiency is achieved without the ripple effect typical of a PWM output stage.So that's clear then! HTH, Simon Link to comment Share on other sites More sharing options...
Chris L Posted February 16, 2010 Share Posted February 16, 2010 I suspect it's something I've misread somewhere, but I know the topology exists - Just might not be called class T. C Link to comment Share on other sites More sharing options...
Simon Lewis Posted February 16, 2010 Share Posted February 16, 2010 Chris, the Wiki entry also suggests that it is Class D but with a more refined control section. As I'm sure you are aware, for every amplifier topology there are myriad variations. Whether these deserve to be named as a different class is a moot point! Simon Link to comment Share on other sites More sharing options...
Doug Siddons Posted February 16, 2010 Share Posted February 16, 2010 I refer the honourable gentleman to my second post in this thread :huh: Link to comment Share on other sites More sharing options...
bruce Posted July 17, 2010 Share Posted July 17, 2010 So... what do we make of the "W Audio" horizon switch mode amps? eg https://prolight.co.uk/item/amp41/ several models, from 150W-650W per channel. No mention of whether this is RMS. Cheap as chips - the smallest is just over £100, the biggest around 300. Has anyone tried them? I've got an application where I need to drive a couple of small monitor-style speakers, and the amp needs to be lightweight. No requirement for huge volumes. Initial plan was to use a standard hi-fi amp, but something rackable would be nice. Link to comment Share on other sites More sharing options...
Jivemaster Posted July 17, 2010 Share Posted July 17, 2010 I used a Chevin Research A300 for a long time it was a perfect "black box" it simply sat there doing it's thing. Nice sound, cool rumming and low weight and small size 200w rms per channel into 8 ohms 300 into 4. These were smpsu and analogue amp which saved all the weight and power loss of the big 50Hx toroid and psu. Chevin are still there making lghtweight but fully functional amps. BK in Southend produce some smps and digital amp rack mount untis and moduleshttp://www.bkelec.com/Pro/Amplifiers/MXF1200D.htmhttp://www.bkelec.com/HiFi/ClassD/ClassD.htm Use of smpsu should allow a unity power factor and a lightweight High Frequency toroid saving on power and weight. Link to comment Share on other sites More sharing options...
Joe90 Posted July 18, 2010 Share Posted July 18, 2010 BK in Southend produce some smps and digital amp rack mount untis and moduleshttp://www.bkelec.com/Pro/Amplifiers/MXF1200D.htm Anyone actually used these amps or have any experience with them? Cheers, Gary. Link to comment Share on other sites More sharing options...
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