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SOLO/610
Classic Tube Preamplifier
& DI Box
Universal Audio Part Number 65-00055
Revision B
Universal Audio, Inc.
1700 Green Hills Road
Scotts Valley, CA 95066-4926
www.uaudio.com
Customer Service & Tech Support: +1-877-MY-UAUDIO
Business, Sales & Marketing: +1-866-UAD-1176
Outside USA: +1-831-440-1176
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Table of Contents
Related Manuals for Universal Audio SOLO/610
Summary of Contents for Universal Audio SOLO/610
- Page 1 SOLO/610 Classic Tube Preamplifier & DI Box Universal Audio Part Number 65-00055 Revision B Universal Audio, Inc. 1700 Green Hills Road Scotts Valley, CA 95066-4926 www.uaudio.com Customer Service & Tech Support: +1-877-MY-UAUDIO Business, Sales & Marketing: +1-866-UAD-1176 Outside USA: +1-831-440-1176...
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Page 2: Notices
Universal Audio SOLO/610 Classic Tube Preamplifier & DI Box. Disclaimer The information contained in this manual is subject to change without notice. Universal Audio, Inc. makes no warranties of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. -
Page 3: Important Safety Information
Do not defeat the purpose of the grounding-type plug. 8. Cleaning - Follow these general rules when cleaning the outside of your SOLO/610: a. Turn the power Off and unplug the unit b. -
Page 4: Table Of Contents
Rear Panel Descriptions ......................... 9 Interconnection Diagrams ........................11 Quickstart ............................. 12 SOLO/610 Overview ..........................13 History of the SOLO/610 ........................15 Glossary of Terms ..........................16 Maintenance ............................18 Hardware Variants ............................18 ... -
Page 5: Introduction
At Ocean Way Studios (formerly United), the 610 is lovingly preserved and still used in Studio B. Most of us at Universal Audio are musicians, recording engineers, or both, and we wanted to build a mic preamp that we’d be delighted to use ourselves. We love the recording process, and we really get inspired when the basic tracks are beautifully recorded. -
Page 6: Features
— at a price every serious project studio can afford. The SOLO/610 offers Mic and DI inputs, and features Gain and Level control for a wide variety of clean to colored tones. Unlike its predecessors, the SOLO/610 has continuous Gain control with even greater range, allowing for more precise gain structuring —... -
Page 7: Front Panel Descriptions
The higher the GAIN setting, the more coloration the SOLO/610 will impart to the incoming signal. For the cleanest, most uncolored signal from the SOLO/610, set the GAIN to a low value while increasing the LEVEL knob until the appropriate output level is attained. - Page 8 (3) POWER LED – This blue LED illuminates when AC power is connected and the rear panel POWER switch is in the ON position. (4) SIGNAL LED – This is a tri-color LED that indicates the signal level at the input stage. The LED glows GREEN with signal peaks, AMBER when the signal approaches clipping, and RED when the signal is clipping (distorting).
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Page 9: Rear Panel Descriptions
DI jack back out to an instrument amplifier or other unbalanced input. The signal at this jack is unaffected by the rear panel MIC/LINE output level switch. Rear Panel Descriptions UNIVERSAL AUDIO, INC. UNIVERSAL AUDIO, INC. SCOTTS VALLEY, CALIF . USA SCOTTS VALLEY, CALIF . - Page 10 (13) FUSE Receptacle – The SOLO/610 uses a fuse for circuit protection. Replace the fuse with the same rating and type only. If the fuse is blown repeatedly, contact UA service. IMPORTANT: The fuse value must be changed if the input voltage is changed. See the Maintenance section on page 18 for detailed information.
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Page 11: Interconnection Diagrams
Interconnection Diagrams Typical SOLO/610 Live Setup Guitar Amplifier SOLO/610 (rear) Mixer (line input optimum) Switch Positions FRONT: MIC / DI: DI for instrument LO-Z / HI-Z: HI-Z +48V / OFF: LO CUT / FLAT: FLAT OUTø / INø: REAR: MIC / LINE:... -
Page 12: Quickstart
Step 6: Set the front panel LO CUT and POLARITY (ø) switches to the down position. Step 7: Set the rear panel MIC/LINE switch to the LINE position to output the normal line-level signal when connected to a device’s “line” input. The MIC position lowers the SOLO/610 output to a mic-level †... -
Page 13: Solo/610 Overview
50 ohms (the symbol for ohms is Ω) to thousands of ohms (K ohms). The SOLO/610 Mic input can be set to either 450 ohms (LO-Z) or 1.6K ohms (HI-Z), allowing it to accommodate virtually every kind of microphone. Switching between these two positions while listening to a connected mic may reveal different tonal qualities and/or gain differences. - Page 14 Polarity Inversion The occasional need for polarity inversion (changing the SOLO/610 front panel switch from IN ø to OUT ø) is best demonstrated by a common example: recording an open-backed guitar amplifier with two microphones, where one mic is placed close to the front of the amp's speaker and the other near the back of the amp.
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Page 15: History Of The Solo/610
History of the SOLO/610 The SOLO/610 was inspired by the 610 console built by Bill Putnam Sr. in 1960 for his United Recording facility in Hollywood. As was the case with most of Putnam’s innovations, the 610 was the pragmatic solution for a recurring problem in the studios of the era: how to fix a console without interrupting a session. -
Page 16: Glossary Of Terms
120 dB. Modern digital audio devices such as the SOLO/610 are able to match (or even exceed) that range. EQ - Short for “Equalization.” A circuit that allows specific frequency areas in an audio signal to be boosted or attenuated. - Page 17 Impedance - A description of a circuit’s resistance to a signal as measured in ohms, thousands of ohms (K ohms), or millions of ohms (M ohms). The symbol for ohm is Ω. kHz - Short for “kiloHertz” (a thousand Hertz), a unit of measurement describing a thousand analog audio cycles (or digital samples) per second.
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Page 18: Maintenance
Make sure the SOLO/610 is properly set for the voltage in your area before applying AC power to the unit! Failure to do so could damage the unit. -
Page 19: Fuse
For safe operation, the fuse value must be correct for the AC input voltage. Never substitute different fuses other than those specified here! Service If your SOLO/610 should ever require service, please see “Service & Support” on page 24. -
Page 20: Session Recall Sheet
Session Recall Sheet... -
Page 21: Block Diagram
Block Diagram... -
Page 22: Specifications
Specifications Input Impedance Mic Input: Selectable 450 ohms (LO-Z) or 1.6K ohms (HI-Z) DI Input: Selectable 50K ohms (LO-Z) or 2.2M ohms (HI-Z) Output Load Impedance 600 ohms Balanced Output from 20 Hz to 20 kHz ±1 dB Maximum Gain 61 dB Tube Complement (1) 12AX7, (1) 12AT7... - Page 23 Index +48 V, 8, 10, 14 Line Level, 17 AC Input, 9 LO CUT, 8 Analog, 16 Low Cut, 14 Balanced, 16 Low Cut Filter, 17 Class A, 13, 16 LO-Z, 8 Cleaning, iii Maintenance, 18 Condenser, 16 MIC INPUT, 10 DAW, 17 Mic Level, 17 dB, 16...
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Page 24: Additional Resources
5. Click the “Submit” button to complete the registration process. Warranty The warranty for all Universal Audio hardware is one year from date of purchase, parts and labor. Service & Support Even gear as well designed and tested as ours will sometimes fail. In those rare instances, our goal here at UA is to get you up and running again as soon as possible.
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