OD-100 CLASSIC PLUSUSER GUIDE

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OD-100 CLASSIC PLUSThank you for purchasing the OD-100 Classic Plus Guitar Amplifier.

The OD-100 CL+ captures the era of arena rock and the days when 100-watt amplifiers lined stages across the world. The OD-100 CL+ was built on solid fundamentals, combining the best characteristics of both classic American and British amplifier designs. This versatile, all in one amplifier is simple yet powerful offering you everything from punchy Blackface™era cleans to rich English style overdrive. Whether you are recording, performing or playing at home, the OD-100 CL+ will take you back to a time when music spoke to you.

The OD-100 CL+ is hand-built and features two footswitchable independent channels, a tube-buffered effects loop, a “Plexi-style output transformer and powered by four EL-34 power tubes for 100 watts of pure tube tone.

*Blackface is a registered trademark of FMIC

With the power switch in the OFF position and the Standback/Standby switch in the Standby position (O), flip the power switch to the ON (I) position. Wait sixty seconds, then flip the Standby switch to the Standback (I) position. This will prolong tube life.

To power down, simply switch the amplifier from Standback to Standby, then flip power switch to the Off (O) position.

OPERATING INSTRUCTIONS

Power Up / Power Down

Stand Back / Standby:(Located on Back)

I: ON, normal operationO: Power is switched OFF

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

Power Select Switch: (Located on Back)

I: ON, normal operationO: Power is switched OFF

Input: Instrument Input

Boost 1Adds gain, turning Channel 1 into a crunchy ‘70s style overdrive when Gain 1 is cranked.

Bright 1 Adds sparkle and cut to Channel 1. Activate this switch when seeking modern Country or old school Funk style tones.  

Gain 1 Adjusts the gain of Channel 1.  Turning it clockwise will increase preamp gain and grind, which will offer a range of clean and crunchy hard rock tones.  Turning it counter clockwise will reduce the amount of gain, for a clearer, more pristine clean tone.

Bass Adjusts the amount of low end. Turning it clockwise increases the amount of bass, for a fuller, warmer Jazz style tone. Turning it counterclockwise will reduce the amount of bass making the tone thinner, making the midrange and treble response more noticeable. Note: Use sparingly, bass may become excessive at higher settings yielding a looser, less focused tone.

Middle Adjusts the midrange. Turning it clockwise increases the amount of mids, which will give your tone a fatter more vocal-like response. Turning it counterclockwise produces tones reminiscent of ‘90s Alternative style music.

Treble Adjusts the top end. Turning it clockwise increases the amount of treble, giving your tone clarity and brightness. Turning it counterclockwise will produce a warmer sound, which is excellent for dialing in classic R&B and Jazz tones.

Level 1 Adjusts the output level of Channel 1 (Master Volume)

Channel 1 (Clean)

Presence Globally adjusts the top-end response of both Channels 1 and 2.   

Level 2 Adjusts the output level of Channel 2 (Master Volume).

Boost 2 Adds an additional gain stage, which transforms Channel 2 into a high-

gain ‘80s Rock lead machine.  

Channel Select

Selects between Channels 1 and 2. To select Channel 2, press the Channel Select switch “IN”. The respective Gain 2 and Level 2 LED’s will

illuminate.Note: When using the footswitch, make sure the front panel Channel Select

switch is in the “out” position. Otherwise, the footswitch will not work.

Channel 2 (Overdrive)

Bright 2Adds bite and cut to Channel 2. Engaging this switch at higher gain settings yields an ‘80s style brown sound with excellent clarity.

Gain 2

Adjusts the gain of Channel 2. Turning it clockwise will add preamp gain for a variety of overdrive tones, from ‘70s thick and crunchy rhythms to smooth

and rich, Hard Rock lead sounds. Turning it counterclockwise reduces the gain, which makes it ideal for modern style Blues playing.

Bass

Adjusts the amount of bass frequencies. Turning this clockwise increases

the amount of low end thump, which is necessary for dialing in authentic hard rock and molten metal tones. Turning it counter clockwise will reduce

the effect and tighten up the bottom-end, which is useful when performing at louder volumes.

Middle

Adjusts the midrange. Turning it clockwise increases the amount of mids,

giving your tone a fatter harmonic response. Turning it counterclockwise will produce a mid-scooped sound well-suited for dialing up early Metal

tones.

Treble

Adjusts the top end. Turning it clockwise enhances notes clarity and attack, perfect for single note riffing. Turning this counterclockwise produces a

singing lead tone, which is reminiscent of influential  Northern California Pop Rock.

FeedbackA speaker dampening control, that adjusts the overall feel of the power amp section. Turning it clockwise from the center offers a tighter more aggressive response.  Turning it counterclockwise from center makes it spongier with more of a vintage sag and feel.

DepthAdjusts the amount of low-end boost added to your amplifiers power section. This will

provide more bottom end while retaining clarity.

Effects LoopThe OD-100 CL+ comes standard with a tube buffered series effects loop which performs well with pedals and line-level rack gear. The return level control acts as the CL+’s master volume while the channel level controls become your send levels.

Speaker Outputs The OD-100 CL+ has individual speaker outputs, therefore you must choose

the appropriate speaker output jack(s) depending on the impedance (Ω) of your

cabinet(s).

One 16 Ω cabinet, use the 16 Ω output jack.

Two 16 Ω cabinets, use both 8 Ω output jacks.

One 8 Ω cabinet, use one 8 Ω output jack.

Two 8 Ω cabinets, use both 4 Ω output jacks.

One 4 Ω cabinet, use one 4 Ω output jack.

Two 4 Ω cabinets, the OD-100 CL+ will not work with a 2 Ω load.

Important: To avoid damage to your amplifier, do not operate without a speaker or suitable

load.  Doing so may cause your warranty to be void.

TubesThe OD-100 CL+ tube complement consists of four EL-34 power tubes and six 12AX7 preamp

tubes.Note: OD-50 CL+ consists of two EL-34 power tubes and six 12AX7 preamp tubes.

FootswitchThe OD-100 CL+ comes equipped with a dual footswitch for remote control

of channel selection and between Channel 1 / Channel 2 and Boost 2.  A

stereo (TRS) cable is provided.

Note: When using the footswitch, make sure the front panel Channel Select and Boost 2

switches are in the “out” position. Otherwise, the footswitch will not work!

Preamp Tube Position ListV1 (closest to the input jack) First gain stage for Channel 1 and 2

V2  Additional gain stages for Channel 1

V3  Additional gain stage for Channel 2 / 3

V4  Additional stage for Channel 2 / 3 and its tone stack.

V5  Effects loop

V6  Phase inverter

Half Power ProcedureTo run your OD-100 CL+ at half power, remove the two outside power tubes and use a speaker output jack

that is one tap lower than the cabinet impedance you are using.

Example: Using a 16 Ω cabinet, use an 8 Ω output jack; if your cabinet is 8 Ω, use a 4 Ω jack.

Important: Please contact us if you have any questions regarding this procedure.

Important:

Use proper fuse for voltage selected.

100V = use 6.25 Amp Slow Blow

120V = use 5 Amp Slow Blow

220V = use 3 Amp Slow Blow

230V = use 2.5 Amp Slow Blow*

240V = use 2.5 Amp Slow Blow*

* Select 240V for 230V/240V applications

H.T. Fuse = 2 Amp Fast Blow

EX:1

Fuse and Voltage SelectionThe OD-100 CL+ is voltage compatible. Voltage selection is made externally at the Power Entry Module. See diagram EX:1.

Open cover using small blade screwdriver or similar tool. Set aside cover/fuse block assembly. Pull voltage selector card straight out of housing, using

indicator pin orient selector card so that the desired voltage is readable at the bottom (see below). Fix indicator pin into notch at opposite side. Insert voltage

selector card into housing, printed side of card facing towards on/off switch and edge containing the desired voltage first. Replace cover and verify that the

indicator pin shows the desired voltage on the cover assembly.

SAMPLE SETTINGS

WARM CLEAN (CHANNEL 1):

FRONT PANEL: Boost 1: off, Bright 1: off, Gain 1: 3, Bass: 4, Middle: 5, Treble: 5, *Presence: 5, Level 1: 3*Presence not shown

BACK PANEL: Feedback: 5, Depth: 5

SPANKY CLEAN (CHANNEL 1):

FRONT PANEL: Boost 1: off, Bright 1: on, Gain 1: 4, Bass: 4, Middle: 4, Treble: 6, Presence: 5, Level 1: 3*Presence not shown

BACK PANEL: Feedback: 5, Depth: 5

SAMPLE SETTINGS

CLASSIC CRUNCH (CHANNEL 2):

FRONT PANEL: Boost 2: off, Bright 2: off, Gain 2: 5, Bass: 3, Middle: 4, Treble: 6, Presence: 5, Level 2: 3

BACK PANEL: Feedback: 5, Depth: 5

CLASSIC LEAD (CHANNEL 2):FRONT PANEL: Boost 2: on, Bright 2: on, Gain 2: 7, Bass: 3, Middle: 4, Treble: 6, Presence: 5, Level 2: 3

BACK PANEL: Feedback: 7, Depth: 5

SPECIFICATIONS:!Output: OD-100 CL+: 100 Watts RMS

OD-50 CL+: 50 Watts RMSTubes: OD-100 CL+: four-EL34 & six-12AX7

OD-50 CL+: two-EL34 & six-12AX7Front Panel:

Ch 1: Input, Boost 1, Bright 1, Gain 1, Bass, Middle, Treble, Level 1Ch 2: Bright 2, Gain 2, Bass, Middle, Treble, Presence, Level 2, Boost 2, Channel Select

Back Panel: Power, Fuse / Power Entry Module, Standby / Standback, H.T. Fuse, Speaker Outputs, (4Ω, 8Ω, & 16Ω), Feedback,

Depth, Effects Loop Effects Loop Return Level, Return and Send jacks and FootswitchDimensions: 28.5” x 11.25” x 9.5”

Weight: 55 lbs.Included Accessories: Dual Footswitch, Footswitch Cable, Cover and Power Cable

Option: Solid state series / parallel effects loop

WARRANTY FOR SUHR AMPLIFIERS AND ELECTRONIC PRODUCTS

JST warrants for lifetime from date of purchase by the initial retail purchaser that this product shall be free from defects in workmanship. Electronic components such as capacitors, resistors, filters, 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 & B, 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 encourage international customers to purchase through your local distributor or dealer for this reason. Our international distributors are set up to handle warranty issues in their respective countries. If you do not have an authorized Suhr dealer in your country, please contact us direct for further details.

Rev. 08172012

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