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The formula to calculate Total Impedance for a parallel
system is ...
1/R T = 1/R 1 + 1/R 2 + 1/R 3 +1/R 4 ...
R = Rated Speaker Impedance
R T = Total Speaker Impedance
R 1 ... = Speaker Impedance
Examples (Speaker cabinets connected in parallel)
One 4-ohm cabinet = 4-ohms
Two 4-ohm cabinets = 2-ohms
Four 4-ohm cabinets = Not Recommended
One 8-ohm cabinet = 8-ohms
Two 8-ohm cabinets = 4-ohms
Four 8-ohm cabinets = 2-ohms
One 16-ohm cabinet = 16-ohms
Two 16-ohm cabinets = 8-ohms
Four 16-ohm cabinets = 4-ohms
Eight 16-ohm cabinets = 2-ohms
Specifications
Minimum Impedance (ohms)
Input Channels
Channel input
Channel 1, 2, 3 - Controls
Channel 1, 2 - Switches
Channel 3 - Switches
Channel 2 - Inputs
Channel 3 - Inputs
Channel Switching
Line Out (type / configuration)
Effects Volume
Effects Loop / Location
Effects Footswitch / Function
Internal Reverb / Effects
External Speaker Output / location
Headphone Jack
Other Features
Dimensions (DWH, inches)
Dimensions (DWH, cm)
Weight (lbs / kg)
Replacement Tube Selection & Bias**
The YCS100 comes from the factory equipped with
matched EL34EH output tubes. The circuitry has been
designed to accommodate any type of EL34/6CA7 as
well as any type of 6L6/5881 output tubes, as long
as the four output tubes be of a matching type. The
amplifier has also been equipped with bias sensing
points for each of the output tubes as well as a bias
adjustment pot that can all be accessed without
removing the chassis from the box. This makes tube
replacement quick and easy.
**We recommend adjusting the zero signal bias to +250
mV +/-30mV DC at each of the test points. Bias adjustment
should be done with the amplifier configuration in the 100
Watt mode. Please refer servicing to qualified personnel.
YCS100 Tube Guitar Amplifier
Type
2 (30-watt mode), 4 (100-watt mode)
3
1/4 inch phone
Gain, Volume,Treble, Mid, Bass, Reverb, and Effects
Boost, Scoop and Modern
Boost, Bright and Modern
Shares Ch 1 input
Shares Ch 1 input
Yes, footswitchable
Speaker Compensated XLR Balanced, 1/4" unbalaced
Yes, 3 individual returns
Yes / Rear
Yes / Internal reverb and external effects globally defeatable
Accutronics® Spring Reverb
Yes / rear (Dual selectable Impedences)
Yes
Standby Switch, Auto tube matching, DC filaments on preamp
tubes, Tuner mute, Separate tuner output, Footswitchable
Solo boost, Presence & Resonance
11.5 x 26.5 x 10.5
29.25 x 67.5 x 26.75
44 / 20
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