Aroma ARC-1000A Manuel d'utilisateur télécharger pdf (Page 107)

tubes age 107

12AU7 12AU7 <--- OK to use pairs of 5814As.

RT512 V508 V701

3TF7 5749 5749

V601 V602

12AU7 12AT7

V603 V604 V607 V509

6AK6 6AK6 6BH6 6BJ6

V901 V902

12AU7 12AU7 <--- OK to use pairs of 5814As.

Each row represents a filament series circuit. The 12AU7 in V511 should not

be substituted with the 5814A as the latter's filament voltage will drop and

voltage will increase across V505 (6BJ6) and V506 (6AK6). V601 (12AU7)

should not be substituted since V602 is a 12AT7. The 12AU7s in V507 and

V510 can be substituted, but use 5814As for BOTH. The same applies to V901

and V902. These are the only instances where the 5814A will work properly.

Whew!! This was a lot of effort to get us back on topic. :-)

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Date: Thu, 30 May 2002 23:19:29 -0400

From: Norman Ryan <[email protected]>

Subject: [R-390] R-390A (non nonA) Tube List

Thanks for the compliment. The R-390A tube list isn't as complicated. Only

V505 (5749) and V701 (5749) filaments are in series together with the ballast

tube RT510 (3TF7). All the others are wired in parallel. The 5814A can be

substituted with the 12AU7. The 12.6 VAC filaments are center tapped and

wired at 6.3 VAC. The R-390A tube list:

V201 6DC6 V202 6C4 V203 6C4 V204 6C4 V205 5814A V206 5814A

V207 5654 V401 5654 V501 5749 V502 5749 V503 5749 V504 6AK6

V505 5749 V506 5814A V507 5814A V508 5749 V509 5814A V510 3TF7

V601 5814A V602 5814A V603 6AK6 V604 6AK6 V605 0A2 V701 5749

V801 26Z5W V802 26Z5W

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 253 254

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Aroma ARC-1000A Manuel d'utilisateur Page 107