User manual YAMAHA VR4000

[. . . ] However, new heads will tend to stretch gradually during shipping and storage, resulting in a tuning deviation when you receive the instrument. Therefore, please perform the steps below to restore the tuning to the factory setting prior to shipment: 1 The area between the kettle edge and the inner circle of the counter hoop is called the collar. Please make sure that the width of this collar is uniform, as shown in the illustration titled "Correct". Correct Wrong 3 If the heel of the pedal is fully lowered as in Fig. If the pedal position is as shown in Fig. [. . . ] G If the heel of the pedal moves downward ¡ Head is tightened too much. Loosen the head as described in step 7. 7 Put your foot on the pedal and fully depress it in either direction (toe and heel). G Heel feels heavier than toe ¡ Go to step 8. G Toe and heel feel equal ¡ Go to step 11. G Heel feels lighter than toe ¡ Head is tightened too much. Keeping the heel of the pedal depressed, loosen the first tuning bolt by 1/ 2 turn and then retighten it by 1/4 of a turn. Perform this operation for all other tuning bolts in the order shown in step 5. If necessary, repeat this procedure, until proper tension is obtained. 12 Strike the head lightly with the supplied mallet etc. The standard striking point is shown below. The standard striking point lies at distance B from the kettle edge, which corresponds to 1/4 to 1/3 of distance A (distance between kettle edge and center of head). Striking point Pedal 8 Fully depress the heel of the pedal as shown in Fig. C. For note comparison a piano is most suitable. When the toe of the pedal is depressed, a higher pitch is obtained. G Heel moves up when releasing the foot from the pedal after depressing the heel, or heel feels heavier than toe ¡ Turn the spring tension adjustment bolt to the left (counterclockwise) G Toe moves up when releasing the foot from the pedal after depressing the toe, or toe feels heavier than heel ¡ Turn the spring tension adjustment bolt to the right (clockwise) Turning the spring tension adjustment bolt is performed using the timpani key. Do not turn by too many full rotations at once, but re-check the adjustment state every 2 turns by depressing the toe and heel of the pedal. Note 8 Operate the pedal as described in step 5. If the pitch does not change, the instrument is tuned properly. (If the pitch changes, repeat from step 7. ) The instrument is now tuned to the lowest sound (note) of its tonal range. Depress the toe of the pedal to change to a higher pitch (note). Do not loosen the spring tension adjustment bolt by more 3 rotations at a time, as the toe of the pedal tends to drop abruptly after a specific point. under the pedal. 9 After tuning, perform x Pedal Adjustment and then c Tuning Indicator Adjustment. Caution Spring tension adjustment bolt Spring Timpani key G Pedal balance spring mechanism Your Yamaha pedal timpani is equipped with a unique pedal balance spring mechanism (a coil spring counteracting the tension of the head) which allows you to freely change the pitch (note) of the instrument at an instant. When the pedals are moved, the pitch of the head will change, and the balance spring ensures that the pedal angle (pitch) will not change when you remove your foot from the pedal. 7 Adjusting The Sound Of Your Timpani c Tuning Indicator Adjustment The tuning indicator shows to which note the pedal is set. After tuning the instrument, you must set each note of the indicator to its proper position. G Adjusting the Pointer Position First loosen the pointer lock nut and then turn the adjuster as follows: G Pointer is located beyond the lower rail end when heel of pedal is lowered fully (lowest note) ¡ Turn the adjuster to the left (counterclockwise) until the pointer is aligned with the lowest note of the indicator. G Pointer moves beyond the upper rail end before toe of pedal reaches end of stroke, or Pointer does not reach lower rail end when heel of pedal is lowered fully (lowest sound) ¡ Turn the adjuster to the right (clockwise) to correct the pointer position as required. After adjustment, securely tighten the pointer lock nut. 1 After you have tuned your timpani to the lowest note of its tonal range, make sure that the pointer is located within 10 mm from the pedal-side end of the indicator rail. * If not, adjust referring to "Adjusting the Pointer Position". [. . . ] Tighten each tuning bolt an additional 1/4 of a turn using the timpani key. Adjust the timpani as described on pages 4 and 5, "Before Using The Pedal Timpani", starting with step 5. For precise tuning, refer to the section "Adjusting The Sound Of Your Timpani" on page 6. 4 Caution Never put your hands etc. under the pedal. 2 After removing all tuning bolts, mark the pedal side of the hoop with cellophane tape etc. [. . . ]