| 摘要 |
PURPOSE:To facilitate operation by allowing the rotational frequencies of a record to change simultaneously with the attachment and detachment of a 45rpm adapter. CONSTITUTION:Since 45rpm center adapter 1 is unnecessary during the play of a 33rpm record, the adapter is stored at center adapter storage pin 2. At this time, change-over lever 3 is moved to put change-over contact 5 in operation, changing rotational frequencies automatically. |
