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Sonic Frontiers SFC-1 Operating Manual

Control amplifier
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2790 Brighton Road, Oakville, Ontario, Canada, L6H 5T4 Tel: (905) 829-3838 Fax: (905) 829-3033
OPERATING MANUAL
We at Sonic Frontiers are sure that you will derive many years of listening pleasure with your new SFC-1 Control
Amplifier. This brief operating manual contains important information regarding the operation and care of the amplifier,
so be sure to read this manual carefully and follow these simple instructions in order to keep it looking, operating and
sounding its best!

VACUUM TUBES

Handling

We suggest that you do not handle the large power tubes with your bare hands or fingers as skin oils deposited on the
glass surface can "leach" through the glass envelope and cause the tube to become "gassy." In other words, your tube life
may be shortened unnecessarily. Use a paper towel or one of the cotton gloves (supplied) instead. This is also the rec-
ommended procedure for handling the small input tubes. Also, check to be sure that none of the 12AT7A/12AU7A tube
pins are bent when you install them.

Installation

Whenever you remove or insert the input or power tubes into their sockets, handle them gently and do not force them into
the sockets. Instead, 'rock'them slightly as you slowly push them into place, making sure that they are proper ly seated.
Over-enthusiastic 'rocking" may snap-off the molded keying lug (orientation pin) at the base of the tube (not covered
under warranty)!

Recommended Tube Types

Your SFC-1 amplifier is supplied from the factory with one (1) 12AT7A for the stereo input tube (Vl) and two (2)
12AU7A for the phase splitter/driver tubes (V2, LV2). Alternative choices for the 12Al7A tube type are 6201 or ECC81
and ECC82 or 5814LA for the 12AU7A,
The power tubes are factory supplied matched pair E34L (mil-spec EL34/6CA7 types) type but you may also use EL34's,
6CA7's or 6550/655OA/KT88/KT90/KT99a types. Although not essential, we recommend the use of matched pairs of
power output tubes for lowest distortion.
SFC-1
CONTROL AMPLIFIER
1
SKU# 56620

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Summary of Contents for Sonic Frontiers SONIC FRONTIERS SFC-1

  • Page 1: Vacuum Tubes

    2790 Brighton Road, Oakville, Ontario, Canada, L6H 5T4 Tel: (905) 829-3838 Fax: (905) 829-3033 SFC-1 CONTROL AMPLIFIER OPERATING MANUAL We at Sonic Frontiers are sure that you will derive many years of listening pleasure with your new SFC-1 Control Amplifier. This brief operating manual contains important information regarding the operation and care of the amplifier, so be sure to read this manual carefully and follow these simple instructions in order to keep it looking, operating and sounding its best! VACUUM TUBES...
  • Page 2 OPERATE/MUTE The “MUTE/OPERATE”switch serves to mute the outputs without having to change the Volume control setting. TROUBLE-SHOOTING GUIDE If at any time your SFC-1 amplifier fails to work, follow this simple checklist: Make certain that the A.C. power cord is plugged in firmly at the A.C. wall socket. Make sure that you have biased the output tubes.

  • Page 3: System Connections

    Tube Biasing This is a simple yet important function of the back panel meter, the selector switch and the four slotted adjustment controls on the back of the unit. It is essential that the following procedures be followed before you turn on your SFC-1 amplifier. OPERATION Connect your speaker leads and input source cables on the amplifier, making sure the power switch is in the “OFF”...

  • Page 4: Safety Instructions

    CLEANING The beautiful stainless steel (non-magnetic) finish of the Front Panel and Black Acrylic finish of the chassis will last for years. A regular dusting with a soft, non-abrasive cloth will generally keep the finish looking like new. Fingerprints may be removed with a small amount of silicon spray, such as WD-40 .

  • Page 5: Disclaimer Of Liability

    DISCLAIMER OF LIABILITY Under no circumstances does SONIC FRONTIERS INC. assume liability or responsibility for injury or damages sus - tained in the use or operation of this equipment or for damages to any other equipment connected to it. SONIC FRONTIERS INC. reserves the right to make design changes or improvements without the obligation to revise prior versions.

  • Page 6: Technical Specifications

    TECHNICAL SPECIFICATIONS Power 100 watts/channel (peak power) 50 watts RMS at I kHz (40 ma. bias, I channel driven) Frequency Response 4 Hz to 50 kHz + 3.0 dB (1 watt) Input Impedance 40 Kohms (Normal) 80 Kohms (Direct) Input Sensitivity .40V RMS at 1 kHz for 45 watts Power Requirements 250 VA 50/60 Hz (Maximum)

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Sfc-1

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