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Summary of Contents for Decware Zen Mini Torii
- Page 1 OPERATION MANUAL MODEL : MINITORII - DESKTOP AMPLIFIER REV 1 MAR 2018 MiniT orii Reference Vacuum Tube Amplifier Owners Manual PAGE WWW.DECWARE.COM...
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Page 2: Safety Instructions
15 Refer all servicing ot qualified service per- read and followed the steps in this Follow all instructions. Refer all service to Decware or a sonnel. Servicing is required when the ap- Do not use this apparatus near water. complete manual. -
Page 3: Table Of Contents
We also have a strong online support forum that is very active. This can be a Design handy way of getting help during off hours or weekends when our office is Voicing closed. Maintenance DECWARE/High Fidelity Engineering Specifications Service 14 PAGE WWW.DECWARE.COM... -
Page 4: Unpacking
You will need three pair of high quality interconnects and a power cord as well as the supplied tubes. On the following page you will see diagram of your amp. Please familiarize yourself with it as well as refer back to it frequently as you become familiar with how this amp operates. PAGE WWW.DECWARE.COM... -
Page 5: What's What
LEFT INPUT A LEFT INPUT B 3A FUSE RIGHT INPUT B ADJ. FEEDBACK ADJ. FEEDBACK RIGHT SPEAKER POWER SWITCH POWER SWITCH LEFT SPEAKER 6CA4 6CA4 12AU7 TREBLE SWITCH 12AU7 TREBLE ADJ. SOURCE A/B SOURCE A/B VOLUME VOLUME HEADPHONE JACK PAGE WWW.DECWARE.COM... -
Page 6: Connections
If you notice the pins are bent they must be straightened prior to inserting the tube into the socket. A simple way to accomplish this is to have a tube pin straightener available from Decware. tube pin straightening tool from Decware PAGE WWW.DECWARE.COM... -
Page 7: Input Connections
Your Mini Torii contains a silver input selector switch and the switch-box shown above is also using silver switching and silver / Teflon internal wiring. This component is called the ZSB and available on the Decware web site. Connecting Subwoofers The Mini Torii can be built with transformer-driven outputs, one for each channel, that can be used to feed another amplifier, or powered subwoofer. -
Page 8: Installing Tubes
The 6V6 output tubes can be substituted with 6Y6, 6K6, 6F6, 6L6 The 12AU7 can be substituted with 5963. The OA3 can be substituted with OB3 OC3 and OD3, although the highest power and lowest distortion will come from the OA3. The OC2 and 6CA4 should not be substituted. PAGE WWW.DECWARE.COM... -
Page 9: Biasing Your Tubes
If a rectifier tube sparks internally when you first turn on the amp, it is a sign that the tube may fail in the near future when the amp is first turned on. Always have a pair of good working spare rectifier tubes on hand at all times. PAGE WWW.DECWARE.COM... -
Page 10: Operation
Whatever the background level of noise and hum is it will increase as you lower feedback. So lowing the feedback increases gain and noise and hum along with it so it is not recommended for headphone use. PAGE WWW.DECWARE.COM... -
Page 11: Clipping
In some cases with super-efficient headphones, the attenuation resistor in series with the headphone jack will have to be increased in value to maintain hum-free sound in the headphones. If this is the case, Decware will fine tune the headphone output specifically for your phones. -
Page 12: Voicing
After the rectifier tube you can then experiment with different input tubes, which is the shortest 9-pin tubes in the front. For headphone users, voicing can mean the difference between liking and disliking a pair of headphones. PAGE WWW.DECWARE.COM... -
Page 13: Maintenance
This is especially true if the amp has sat for any length of time (months) without use. PAGE WWW.DECWARE.COM... -
Page 14: Specifications
For service please contact us by phone or by email. You can find both on the contact form of our web site, www.decware.com We can help you troubleshoot your system and help you determine what is causing the issue that you’re having. Everyone can save themselves a lot of trouble by having a spare set of known good replacement tubes on hand.
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