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Rear Panel Controls

MAINS SWITCH: Selects the country voltage.

For 100-120VAC selections, change IEC fuse to T5A/250V fuse.

For 220-240VAC selections, change IEC fuse to T2.5A/250V fuse.

The H.T. Fuse remains unchanged.

MAINS INPUT: AC wall power via included IEC cord to a grounded

outlet

HT FUSE: Protection for AC power faults.

CH/BOOST: TRS switching jack for footswitch,. Tip to ground

switching type. Tip=Channel and Ring=Boost select.

(2 button LED footswitch included)

LOOP: 1/4" tip to ground switching jack to bypass loop via

external switching unit or footswitch (not included)

TEST POINT & BIAS:

Using a Digital Multi Meter, set it to DC mV(olts) and insert the black probe

into the COMMON meter jacks and the red probe into either TEST POINT

meter jack.

Set MASTER volume fully counter clockwise and take the amp off

STANDBY, measure and set BIAS INSIDE 2 or BIAS OUTSIDE 2 located

below the test points. Adjust the bias pots slowly.

Please note that the reading is the sum of 2 power tubes. Factory settings

for 6L6 at either TEST POINT is 72mV, EL34 = 76mV, 6550/KT88 = 84mV.

T.5A FUSES: Fusing for the two inside pair and two outside pair of output

tubes. In case of output tube failure, only the problem pair of tubes will

drop out of circuit leaving you to finish your gig!

Содержание Thrasher

Страница 1: ...OPERATION MANUAL...

Страница 2: ...less attack that the circuit delivers The design is intended to offer a more focused approach to tube amp performance than previously available in the market Drop tuning 6 7 8 stringed instruments wil...

Страница 3: ...witch that shifts the frequency point of the tone stack to better match the amplifier to different speaker types and room sizes BOOST When engaged in channel 1 BOOST control is active for user control...

Страница 4: ...switching unit or footswitch not included TEST POINT BIAS Using a Digital Multi Meter set it to DC mV olts and insert the black probe into the COMMON meter jacks and the red probe into either TEST PO...

Страница 5: ...S LEVEL will usually be quite low for pedals Setting the S LEVEL for rack units is easier since they have input indicators NOTE When using effect units in the FX LOOP in PARALLEL mode you must set the...

Страница 6: ...TREBLE 12 o clock BOOST off DEPTH 12 o clock PRESENCE 1 o clock Violin solo tone LFGAIN 12 o clock HFGAIN 4 o clock GAIN 5 o clock VOLUME 4 o clock BASS 3 o clock SHIFT down MIDDLE 3 o clock TREBLE 10...

Страница 7: ...7 949 0444 ext 5120 Keep all original documents and packing materials to insure freight damage claim resolution Merchandise that has been modified after original shipment from the Randall factory Prod...