Dual mono 12 valve class a push-pull amplifier with no negative feedback (12 pages)
Summary of Contents for Decware SE84C+
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DECWARE OWNERS MANUAL – MODEL SE84C+ Zen Triode Amplifier 2 watts x 2 or 6 watts x 1 Single-ended Class A stereo amplifier Manufactured by High Fidelity Engineering Co. WWW.DECWARE.COM...
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DECWARE OWNERS MANUAL – MODEL SE84C+ Locations and function of front control Manufactured by High Fidelity Engineering Co. WWW.DECWARE.COM...
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DECWARE OWNERS MANUAL – MODEL SE84C+ CHANNEL A RIGHT INPUT CHANNEL B RIGHT INPUT POWER CHANNEL A SWITCH LEFT INPUT CHANNEL B RIGHT INPUT IEC CONNECTOR WITH HIDDEN 3 AMP FUSE FIGURE 2 Location and function of rear controls and jacks Manufactured by High Fidelity Engineering Co.
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The last and largest tube is called the rectifier tube and can be your choice of 5U4, 5AR4, and even 5Y3GT. This amplifier should not be used with 274B rectifiers without first being modified by Decware. Trying different rectifier tubes will also change how the amplifier sounds. TUBE LIFE The output tubes are the main tubes that wear out.
DECWARE OWNERS MANUAL – MODEL SE84C+ Now that you have the tubes installed and know what each one is for, hook your speakers and source up to the amplifier and turn it on. Be sure to have the volume control all the way down. After the tubes slowly light up and begin to work (about 20 seconds or so) you can slowly start to raise the volume.
DECWARE OWNERS MANUAL – MODEL SE84C+ Turn off the lights and look into the output tubes. There are some small square holes in the gray plates inside the tube where if you look through them you can see a blue glow on the internal grids of the tube.
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DECWARE OWNERS MANUAL – MODEL SE84C+ It is also possible to get excellent results from some 16 ohm high efficiency drivers as well. However, if you try this and find the amp to sound a bit weak or thin, we can change the output transformers to what we call the “EX”...
DECWARE OWNERS MANUAL – MODEL SE84C+ speed the seating of the dielectric in the coupling caps and you can then expect the amp to bloom in the very near future. Beyond this, the amplifier will continue to improve and become more and more refined over the next 200 hours or so.
DECWARE OWNERS MANUAL – MODEL SE84C+ rotated. If the Q-Tip comes out with dark stains on it, your jacks were dirty. Jacks can get dirty after only a single insertion of a non-cleaned interconnect cable. Having clean connections is important. Finger oils do not help the sound.
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Your amplifier comes with a lifetime warranty. Probably one of the only amplifiers in production that has one. Decware is a small enough company to consider these hand built amplifiers to be like our pets. We like to keep tabs on them and make sure their healthy and happy at all times.
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Ground Star ground with silver wire. Interconnect Mogami Signal tube 6N1P / 6922 / 6DJ8 Transformers 9800 ohm Decware EM406 Power World voltage compatible 150ma Decware Switches Silver contacts Biasing Self-biasing Resistors Dale, Vishay Caps Nichicon, Sprague ATOM Signal Cap...
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