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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Hughes & Kettner VS 250, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
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Unfortunately, only a few customers devote their time to read an instruction of Hughes & Kettner VS 250. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
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First and foremost, an user manual of Hughes & Kettner VS 250 should contain:
- informations concerning technical data of Hughes & Kettner VS 250
- name of the manufacturer and a year of construction of the Hughes & Kettner VS 250 item
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- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Hughes & Kettner VS 250 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Hughes & Kettner VS 250, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Hughes & Kettner service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Hughes & Kettner VS 250.
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Table of contents for the manual
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Page 1
USER MANUAL Hughes & Kettner VS 250 Stereo Tube Power Amplifier[...]
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Page 2
Hughes & Kettner Stereo Tube Power Amplifier vs 250 Congratulations! You have just acquired a highquality sound tool which combines the sonic superiority of vacuum tubes with the optimum usefulenss of a guitar rack . The VS 250 incorporates the sum of our experience with vacuum tubes. May you enjoy the new measure of expressiveness and creative[...]
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Page 3
FRONT Stand by There are two different levels of voltage controlling the tubes: 1) the basic voltage intended to warm the tube to minimum operational temperature. This voltage is always applied to the tube whenever the power switch is in the on position. 2) the operating voltage (plate voltage) which drives the tube. The operating voltage is turned[...]
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Page 4
With the SELECT switch you can alternate between PRESENCE 1 and PRESENCE 2. The triangular-shaped LEDs indicate which presence control is currently active. On the back of the VSZ50 there is one l/4” jack per channel for connecting a footswitch to select between PRESENCE 1 and PRESENCE 2. Please note: The PRESENCE controls do not affect the tone a[...]
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Page 5
Pentode/Triode The first guitar tube amps from the 30’s and 40’s utilize d TREIODE power amp tubes. Since triodes tend to emphasize even-order harmonics, these amps had a very typical sound with a warm even tone, even when overdriven. Great for sweet, warm, full, fat blues. To obtain higher power levels, tubes were developed in the 50’s with [...]
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Page 6
Speaker Outputs Each channel of the Vs 250 has three speaker output jacks with different impedances: 4 ohms, 8 ohms, an d 16 ohms. Use the jack which corresponds to the impedance of the guitar loudspeaker cabinet which you are using. All three jacks may be used simultaneously. If you wish to connect two &ohm cabinets to one channel , please con[...]