GM-70. - The final innovative MIDI controller function that is featured in the GM-70 is the ability to transmit any MIDI continuous controller message from a huge collection of controller knobs, switches and foot pedals. No less than eleven different controllers can be assigned to any type of MIDI controller message

2022年1月28日 · GM-70 is a thoriated tungsten filamentary triode. If the tube is new, or in good condition, it may be worth running the filament at a a slightly reduced voltage, to slow down the exhaustion of the active layer. This can yield a very useful increase in lifetime. The attached diagram is from the EIMAC app-notes on the subject.

With the GM-70 you can control up to eleven possible MIDI parameters! That is four destinations for the four continuous controllers on the guitar, plus two possible destinations for the mode switch. In addition, the GM-70 has inputs for two more foot switches plus a …

GM70 High-Power Low-Frequency Triode Glass Tube SPECIFICATION Directly heated wolfram thoriated cathode Heater voltage Heater current Plate voltage Height, max

The GM-70 triode is used as a low-frequency power amplifier in RF equipment. Military equipment. Near 845 Equivalent. NEW, NOS and never used before! Key specifications: Interelectrode capacity: grid-anode 12pF; grid-cathode 8pF; anode-cathode 4pF. Rated electrical data: glow voltage 20V; filament current 3A; plate voltage 1.5kV; height 185mm;

2010年3月3日 · Technically the graphite plate should be superior, it can radiate heat more efficiently and can stand higher temperatures. My suggestion would be (and some people will disagree with this), to use the cheaper graphite types and spend the saved money on better output transformers. You can calculate rp as rp=mu/transconductance.

Monoblock amps based on GM70 are very attractive proposition. Compared to say , very popular 300B tube, GM70 has 3 x the power, , better bass control, better sounstage, and similar mids and highs. GM70 is cheaper tube, lives longer and has a fun factor of 10.

To create a GM70 amplifier with enough sensibility to be driver directly by a CD player or a phono preamplifier it is necessary have a driver stage with a voltage gain about 50x or 70x. Using the pentode D3a it is possible build a pure single ended two stages amplifier because it have high gain and low internal resistance.

2020年10月25日 · WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. the safety precautions around high voltages. Actually two of my friends and I are working on a single ended integrated amplifier so we thought why not to write about it here in order to use group wisdom. I'm not sure about using 6N6/6H6 and 6E5P.

The deHavilland GM-70 is a 100% pure class A single-ended triode zero negative feedback amplifier. The GM-70 directly heated triode vacuum tube is the largest output triode available in audio today.