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Help with EL504-based amplifier - diyAudio
https://www.diyaudio.com/community/threads/help-with-el504-based-amplifier.203218/
Hello. This is my first tube-based amplifier I've ever built, and I'm experiencing a strange issue with it. The amplifier works well when the EL504 is heating up, but it stops working when fully heated. It works also when cooling down. I'm following an schematic made for the PL504 but modified...
6GB5 / EL504 / EL500 Audio Tubes - www.thetubestore.com
https://www.thetubestore.com/6gb5-el504-el500
Buy 6GB5 / EL504 / EL500 vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier.
Hi-Fi Tube Headphone Amplifier …
https://www.aliexpress.com/i/32945981758.html
Hi-Fi Tube Headphone Amplifier 12AU7+EL500/EL504/EL519+GZ34 Tube Valve Headphone AMP Head-Fi,32 Ohm to 1Kohms Headphone Headset. Unique tube headphone amplifier compatible with many tubes. Powerful output with two tube stages,Can drive all …
TC: EL36 EL500 EL503 EL504 Audio Tubes - www.tube-classics.de
http://www.tube-classics.de/TC/Tubes/Common%20EL36-504/EL36-504.htm
The EL36 - EL500 - EL503 - EL504 Gallery. The EL36 = 6CM5 is another output pentode / tedrode developed by Philips. Characteristics between EL12 and EL34. Not so much output power as an EL34, but maybe easier to drive and less heat dissipation. The successors as the EL500, EL5000 or EL504 are optimized versions with cheaper bases / sockets in the later versions (EL503).
Hi quality Push Pull Amplifier with PL500 / PL504/ EL500 ...
https://www.tubes.rs/quality-push-pull-amplifier-pl500-pl504-27gw6-12au7-ecc82-12ax7-ecc83/
This is hi quality bass guitar amplifier with output TV sweep tubes PL500 PL504 27GB5 EL500 EL504 6GW6 6P36S 6P41S 6GB5 push pull class AB2. Frequency range: 30Hz-15kHz @ Po=30W continious, 0.5dB. Distortion: 40Hz 1.4%, 1kHZ 0.8%, 10kHz 1.7% for full continious power 30W: These sweep TV tubes (line deflection valves) are still available in big quantaties and it’s easy …
Hi quality Push Pull Amplifier with PL500 / PL504/ EL500 ...
http://www.tubes.rs/quality-push-pull-amplifier-pl500-pl504-27gw6-12au7-ecc82-12ax7-ecc83/
This is hi quality bass guitar amplifier with output TV sweep tubes PL500 PL504 27GB5 EL500 EL504 6GW6 6P36S 6P41S 6GB5 push pull class AB2. Ua=250V, Ug1=-45V, AB2, Raa = 3k. Frequency range: 30Hz-15kHz @ Po=30W continious, 0.5dB Distortion: 40Hz 1.4%, 1kHZ 0.8%, 10kHz 1.7% for full continious power 30W: Hum and noise:-67dB Intermodulation: less then 1% …
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