Hi all. I have had a 396A linestage half built for a few years. Just couldn't find the time to finish it. I had all the parts already procured for a 12B4A amplifier to go with it. Both designs were designed around Magnequest iron. After buying a SE 6L6G and listening for a few weeks I feel I need more watts per channel. I'm using a pair of FE206Es in reflex cabinets so I would guess they are about 97 dB 1w/1m in a fairly small room but the 6L6s just don't have enough grunt as nice as they sound. So I came up with a design for a 300B amplifier that utilizes parts I already own. I will need to buy some chokes and a power transformer but I have most of it. Here is what I have so far. A 396A transformer coupled to a 12B4A which is driving a 300B. Initial thoughts?Gavin
Edits: 03/14/16 03/14/16 03/14/16 03/14/16
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Topic - Need some opinions and maybe a lot of help with 300B design. - gavinhaley 10:38:13 03/14/16 (39)
- OK...:) - PakProtector 10:29:10 04/10/16 (0)
- Many many problems - drlowmu 10:21:24 03/15/16 (26)
- RE: Many many problems - gavinhaley 22:52:38 03/15/16 (25)
- RE: Many many problems - drlowmu 09:10:12 03/16/16 (24)
- RE: Many many problems - maxhifi 10:33:27 03/16/16 (23)
- RE: Many many problems - Tre' 17:24:47 03/16/16 (21)
- RE: Many many problems - maxhifi 19:38:54 03/16/16 (20)
- RE: Many many problems - Tre' 21:53:27 03/16/16 (19)
- Bass VS La Scalas - Triode_Kingdom 08:25:29 03/17/16 (15)
- RE: Bass VS La Scalas - Mr_Steady 05:23:31 03/18/16 (13)
- Spot on assessment... horn bass embodies... Accuracy.~nT - Cleantimestream 08:55:00 03/20/16 (12)
- Not if the horns are short (nt) - Triode_Kingdom 20:31:44 03/21/16 (11)
- No Sir, shorter horn merely less bass... No increase in distortion whatsoever - Cleantimestream 08:39:10 03/23/16 (10)
- RE: No Sir, shorter horn merely less bass... No increase in distortion whatsoever - Triode_Kingdom 08:21:26 03/24/16 (9)
- you are welcome to believe that Triode... music lives in the midrange and I have owned speakers that went to.. - Cleantimestream 14:14:21 03/24/16 (7)
- Common misconception - Triode_Kingdom 22:32:53 03/24/16 (4)
- The requirements for accurarcy - Mr_Steady 05:48:18 03/25/16 (2)
- RE: The requirements for accurarcy - Triode_Kingdom 22:04:50 03/25/16 (1)
- RE: The requirements for accurarcy - Cleantimestream 07:45:06 03/26/16 (0)
- RE: Common misconception - Cleantimestream 03:49:40 03/25/16 (0)
- Half Wavelength Theory (nt) - Tre' 17:51:06 03/24/16 (1)
- Sure, one side of the room greater than 28 ft, how about 20 Hz swamping out a real important area... - Cleantimestream 18:16:14 03/24/16 (0)
- RE: No Sir, shorter horn merely less bass... No increase in distortion whatsoever - kyle 11:43:35 03/24/16 (0)
- RE: Bass VS La Scalas - maxhifi 09:38:23 03/17/16 (0)
- RE: Many many problems - maxhifi 07:01:37 03/17/16 (2)
- RE: Many many problems - Tre' 08:35:11 03/17/16 (1)
- RE: Many many problems - maxhifi 09:29:41 03/17/16 (0)
- RE: Many many problems - drlowmu 15:10:32 03/16/16 (0)
- RE: Need some opinions and maybe a lot of help with 300B design. - hifipaul 19:35:11 03/14/16 (4)
- RE: Need some opinions and maybe a lot of help with 300B design. - gavinhaley 21:13:44 03/14/16 (3)
- RE: Need some opinions and maybe a lot of help with 300B design. - maxhifi 23:16:37 03/14/16 (2)
- RE: Need some opinions and maybe a lot of help with 300B design. - gavinhaley 00:50:49 03/15/16 (1)
- RE: Need some opinions and maybe a lot of help with 300Bsign.ree - maxhifi 07:58:08 03/16/16 (0)
- RE: Need some opinions and maybe a lot of help with 300B design. - Paul Joppa 13:44:58 03/14/16 (5)
- RE: Need some opinions and maybe a lot of help with 300B design. - gavinhaley 13:55:01 03/14/16 (4)
- RE: Need some opinions and maybe a lot of help with 300B design. - Triode_Kingdom 15:25:19 03/14/16 (1)
- RE: Need some opinions and maybe a lot of help with 300B design. - Paul Joppa 17:35:37 03/14/16 (0)
- RE: Need some opinions and maybe a lot of help with 300B design. - gavinhaley 13:56:49 03/14/16 (1)
- RE: Need some opinions and maybe a lot of help with 300B design. - Paul Joppa 18:55:32 03/16/16 (0)