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#2642 |
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diyAudio Member
Join Date: Sep 2003
Location: High up in Alps
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Well well; alot of similarity, ECL82 7W per channel. Drop-through o/p trannies; home-made mains tranny different orientation. Not a touch of hum..Fixed bias operation.
squad= balanced input trannies: front end 12GN7 as triode; split load p/s ECC88. I like the sound but 8K primary is a touch soft on the upper register, neverless an easy amp to build with a remarkable performance and sounds astonishingly loud and clean when put against a 20 Watter. richy |
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#2643 |
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diyAudio Member
Join Date: Nov 2009
Location: athens
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Hi all my new pre, the design is mr Allen W[ATTACH][ATTACH][ATTACH]100_1138.JPG[/ATTACH][/ATTACH][/ATTACH]rite.
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#2644 |
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diyAudio Member
Join Date: Nov 2009
Location: athens
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[ATTACH][ATTACH]100_1142.JPG[/ATTACH][/ATTACH] and this
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#2645 |
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diyAudio Member
Join Date: Aug 2009
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takiskatsikas : Nice work
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#2646 |
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diyAudio Member
Join Date: Nov 2009
Location: dayton ohio
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It's a beast,
Grommes becomes Frazier Power amp turned mega bass crazy; 4 output tubes 6GT5A's rapevan now where did those guys go? |
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#2647 |
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diyAudio Member
Join Date: Oct 2009
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#2648 |
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diyAudio Member
Join Date: Aug 2008
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6H13C & Rare CV200/600 & PCC88 Siemens /yellow pins/
OTL for headphones 200 and more ohms. Loftin-white, only 1 cap ELNA CE between output stage and headphones. Picasa Уеб Албуми - Azazello - amplifiers |
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#2649 |
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tubie newbie
diyAudio Member
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First Tube Construction
12b4 linestage built based on threads here. CLCLC Filter with 2x OD3 for 300V B+. Resistive loaded plate with a LM317CCS on the cathode keeping the tube biased at 20mA with 150V plate voltage. Have not played with LED bias yet. Built P2P but embarrased to show it as wiring is UGLY. No hum so I guess it is good enough for now. Chasis made of Cherry and Maple of local origin. The gas reference tubes add a very nice light to the amp.
__________________
Living life doing the Waltz in 4/4 meter. |
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#2650 |
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Account Disabled
Join Date: Aug 2006
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#2649
The hand that rocks the cradle. |
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| rhoughtb |
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