Related Manuals for Aiken Amplification Sabre
Summary of Contents for Aiken Amplification Sabre
- Page 1 Sabre User's Manual Aiken Amplification, Inc. 1225 Montague Avenue Greenwood, SC 29649 Tel: 864-993-8383 http://www.aikenamps.com...
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Page 2: Table Of Contents
Contents Contents.......................2 Getting Started.....................3 Front Panel Controls and Switches..............4 Rear Panel Controls and Switches..............7 Tube layout and replacement................10 Biasing........................11 Speakers......................12 Troubleshooting....................13 Specifications....................17... -
Page 3: Getting Started
Aiken Sabre amplifier! channel. The clean channel is capable of tones reminiscent of the finest old Fenders, The Sabre is a 50W channel-switching while the gain channel takes you into amplifier featuring two EL34 tubes in the modern modded high-gain territory. -
Page 4: Front Panel Controls And Switches
Front Panel Controls and Switches Input jack: Plug your guitar in here and you are ready to rock! Ch1/2 select switch: This switch selects either the clean channel or the distortion channel. It should be in the “up”, or channel 2 position to enable normal footswitch operation, as it will override the footswitch setting. - Page 5 Channel 1 Treble: The treble control adjusts the high frequency equalization of the clean channel. Channel 1 Master: The output level control is the overall level control for the clean channel. It should be used to equalize the volume between the clean and distortion channel when switching between them.
- Page 6 Note that a small amount of noise during rotation of the presence control is normal, and is due to a small DC voltage present on the control. This was deliberately done, in keeping with the "old-style" presence control circuitry that we feel sounds best. Pilot lamp: The pilot lamp lights when power is applied to the amplifier and the power switch is on.
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Page 7: Rear Panel Controls And Switches
Rear Panel Controls and Switches AC Mains: Plug the supplied IEC mains cord into this outlet to provide power to the amplifier. Mains Fuse: 2A slo-blo for 100V/120V operation, 1A slo-blo for 200V-240V operation. AC Mains voltage selector: Set this switch to the appropriate position to match the mains voltage in the country in which you are using the amplifier. - Page 8 Then adjust the effects unit’s output level so the Sabre’s volume is the same with the insert cable plugged into the back of the amp or unplugged. Refer to the effects unit user manual for proper adjustment in case it differs from these instructions.
- Page 9 Electronics manual Aiken Amplification is in no way affiliated with TC Electronics, we just were told about this effects unit from a customer, and decided that it looked like it was tailor-made for use with the Sabre! Footswitch jack: This is a 1/4" TRS (tip/ring/sleeve) insert style jack.
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Page 10: Tube Layout And Replacement
Tube layout and replacement The Sabre uses five 12AX7/ECC83 tubes and EL34. The preamp tube function is as follows, starting at the side closest to the input jack: CH1 preamp 1/CH2 preamp 1 (12AX7/ECC83), CH1 effects recovery amp/CH2 preamp 2 (12AX7/ECC83), CH2 preamp 3/CH2 preamp 4 (12AX7/ECC83), CH2 effects recovery amp/CH2 cathode follower (12AX7/ECC83), and phase inverter(12AX7/ECC83). -
Page 11: Biasing
Biasing Biasing is very easy, and doesn't require removing the chassis from the cabinet. You simply use a voltmeter (any inexpensive digital multimeter will do), set it for the smallest DC voltage range (typically 200mV). Then: (1) Unplug any guitar cords going into the input jack. Turn the two volume controls all the way down (other control positions don’t matter). -
Page 12: Speakers
The amplifier was voiced for this speaker in a 4x12 cabinet or a 2x12 cabinet. They are rated at 25W, so they make a good match for the Sabre in a 2x12 or 4x12 cabinet, but are under- rated for the 50W Sabre in a 1x12 configuration, so they shouldn’t be used in that case. Celestion Vintage 30's have a very pronounced midrange, which may be a bit too harsh in an open-back configuration, which naturally enhances the midrange frequencies, and can sound a bit "boxy"... -
Page 13: Troubleshooting
Is the insert cable fully plugged into the jack on the back of the chassis? Is the effects unit designed for pro level (0dBu nominal, +4dBu max) levels? The Sabre will not work with “stompbox”, or guitar-level effects, as they are designed for very low guitar signals. - Page 14 Humming or buzzing noise: Unplug the guitar cord from the input and unplug any cable used for jumpering the two inputs. If the buzzing stops, try replacing the cord. Be sure to use only guitar cables, not unshielded speaker cables! If in doubt, unscrew the connector and look to see if there is a shield around the center connector.
- Page 15 If your Sabre blows the HT fuse, it is most likely caused by a bad EL34 output tube, or incorrect bias setting (usually accompanied by red glowing plates in the tubes and a very hot running amplifier).
- Page 16 (with some different value components on the main board as well – see Service bulletin 1 for details). The Sabre uses 1000V 3A FR307 fast- recovery rectifiers (available online from Digikey at http://www.digikey.com), but you can substitute standard 1N4007 diodes if necessary.
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Page 17: Specifications
Specifications Output Power: 50W RMS at onset of clipping into resistive load at rated impedance. Input Impedance: 1 Megohm Input sensitivity: < 1mV for full clipping, channel 2 Five 12AX7/ECC83 preamp tubes, two EL34 Tube complement: power tubes. 100V-120V: Mains: 2A slo-blo, HT: 500mA Fuses: fast-acting 200V-240V: Mains: 1A slo-blo, HT: 500mA...
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