Suhr SL-68 User Manual

SL-68™ HAND WIRED

USER GUIDE

SL-68 Hand Wired Amp

Each SL68 amp features hand wired construction, four EL-34‘s (which deliver 100 watts),

four inputs, two channels, a Low Power switch, Master Volume control, and delivers a wide
range of classic and modern tones.

From warm and sparkling cleans, to high-gain *Variac™style overdrive tones, the SL68 is the
foundation of great rock tones!

*Variac is a trademark of ISE, Inc.

Presence:

Adjusts the amount of high frequencies. Turning it clockwise will

add more cut and sparkle.

Bass:

Adjusts the amount of low end. Turning it clockwise increases the

amount of low frequencies, giving you a fuller tone. Turning it

counter clockwise will reduce the effect and tighten up the bottom-

end, useful when performing at louder volumes.

Middle:

Adjusts the midrange. Turning it clockwise increases the amount

of mids, giving your tone a fatter response. Turning it counter

clockwise will produce a mid-scooped sound.

Treble:

Adjusts the top end. Turning it clockwise increases the amount of

treble, giving your tone clarity and brightness. Turning it counter

clockwise will produce a warmer sound, excellent for dialing in

smooth fluid-like lead tones.

Vol ume I:

Adjusts the overall output level of Channel I.

Vol ume II :

Adjusts the overall output level of Channel II.

Offers the following three-positions:

OFF: Power is switched off

HI: On, normal operation

LOW: Changes the SL-68’s feel from tight and aggressive to

spongy with a smoother attack, excellent for solo playing.

NOTE: Dimming of the power indicator light in LOW mode is normal.

Stand-By:

With the Power switch in the OFF position and the Standby switch

in the Standby position, flip the power switch to ON. Wait sixty

seconds, then flip the Standby switch to the ON position.* To power

down, simply switch the power switch to the OFF position.

* This will prolong tube life.

NOTE: To avoid loud popping or damage, ensure the amplifier is in the Standby position.

Power Selector Switch:

TONE CONTROLS

Bridging or Jumping the Channels

Bridging or Jumping the channels will unlock a palette of sounds and

expand the SL-68’s possibilities. Begin by plugging your guitar into

the top (high sensitivity) input of Channel I, then run a short

instrument patch cable from Channel I’s bottom (low sensitivity) input

to the top (high sensitivity) input of Channel II, then blend Volume I

and Volume II controls to dial in a wealth of new and unique tones.

Channel I Input (top)

Has a high sensitivity and voiced brighter than Channel II.

NOTE: This input is most commonly used.

Channel I Input (bottom)

Has low sensitivity and offers a slightly warmer tone.

Channel II Input (top)

Has high sensitivity and offers a normal/bassier tonal response.

Channel II Input (bottom)

Has low sensitivity and a normal/bassier tonal response.

INPUTS

Master Volume:

Adjusts the SL-68‘s overall output level and offers the flexibility to dial up rich, high-gain overdrive at any volume.

Tub es

The SL-68 tube compliment consists of four EL-34 power tubes and three12AX7 preamp tubes.

Speaker Outputs:

Two loudspeaker outputs wired in parallel with 3-way impedance selector switch for 4Ω, 8Ω & 16Ω.

IMPORTANT: To avoid serious damage to your amplifier, we recommend never operating it without a speaker or suitable load.

SAMPLE SETTINGS

PUNCHY CLEAN: Power: HI, Master Volume: 8, Presence: 6, Bass: 6, Middle: 5, Treble: 7, Volume I: 4, Volume II: 0

CRUNCH: Power: HI, Master Volume: 4, Presence: 6, Bass: 6, Middle: 5, Treble: 7, Volume I: 7, Volume II: 0

LEAD: Power: Low, Master Volume: 4, Presence: 5, Bass: 5, Middle: 6, Treble: 5, Volume I: 10, Volume II: 0

BRIDGED: Power: Low, Master Volume: 4, Presence: 6, Bass: 6, Middle: 5, Treble: 7, Volume I: 10, Volume II: 7

SPECIFICATIONS:!

Output: 100 Watts RMS

Tub es: 4-EL34 & 3-12AX7

Fuse:"3 Amp Slo-Blo

Speaker: EVM-12L

Front Panel: OFF/HI/LOW Power Select Switch, Presence, Bass, Middle, Treble, Volume I, Volume II controls and four Inputs

Rear Panel: Master Volume, two Speaker outputs, Impedance Selector (4Ω, 8Ω, & 16Ω), HT Fuse, Mains AC Inlet and Mains Fuse

WARRAN TY FOR SUH R AMPLIFI ERS A ND E LEC TRON IC P ROD UCTS :

JST warrants for lifetime fr om date of pu rchase by the initial retail p urchaser that thi s product shall be free from defects in work manship. Electronic components such as capa citors, resistors, fi lters, transformers, jacks,

and pots are covered for 5 years. Any parts determined defective by JST within the five (5) year term shall be repaired or replaced by JST without charge for parts and labor provided the unit is returned, transportation

costs prepaid, to JS Technologies, Inc., 601 Crane Street, Unit A, Lake Elsinore, CA 92530, or to such facility authorized by JST. JST will pay shipping costs to return the unit to its owner. Defects in workmanship will be

determined by JST for limited lifetime coverage.

This warranty does not cover damage caused by accident, misuse, abuse, neglect, unauthorized or improperly performed repairs, alterations, and/or wear and tear occasioned by use of the product, and does not

include any expense for inconvenience or loss of use while the product is being repaired or replaced. JST expressly disclaims any liability for consequential damaged arising from the sale, use, or inability to use the

product. Any warranty implied by law, including any warranty of merchantability or fitness, is expressly limited to the one (5) year warranty term for the parts on our amplifiers and electronic products. The foregoing

statements of warranty are exclusive and in lieu of all other remedies. Workmanship lifetime warranty is limited strictly to the original retailer purchaser of the instrument registered with JST within 10 days of purchase

from an authorized JST dealer or distributor. JST will pay shipping costs to return the unit to its owner within the mainland U.S.

The above warranty policy only applies to customers in USA. If you are an international customer, please check with your distributor and the dealer in your country for warranty matters. Warranty issues must be handled

through your dealer or distributor. If you are an international customer who purchased (or plan to purchase) from a US dealer, we can handle warranty matters direct but you will be responsible for shipping both ways.

We en courage international customers to purcha se throu gh your local d istributor or dealer for thi s reason. Our intern ational dis tributors are set up to handle war ranty is sues in their respe ctive count ries. If you do not

have an authorized Suhr dealer in your country, please contact us direct for further details.

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