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10K |
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22K |
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H.T.SUPPLY 3 |
16uf |
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32uf |
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82K |
91K |
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OUTPUT 1 |
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47nf 400V |
220K |
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100K |
1000pf |
220pf |
100K |
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OUTPUT 2 |
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160V |
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200V |
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TREBLE |
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47nf 400V |
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22nf |
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220K lin |
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220K |
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1000pf |
47nf |
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NORMAL |
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1M |
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INPUT |
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470K |
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100K |
220K |
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100K |
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470K log |
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220K lin |
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V4a |
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V4b |
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MASTER |
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V1a |
NORMAL |
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MIDDLE |
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VOLUME V3a |
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V3b |
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22K |
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VOLUME |
V2a |
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1M |
100nf |
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100K lin |
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160V |
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1000pf |
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1K5 |
270K |
220K |
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2K2 |
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1K |
47nf |
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47nf |
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2K2 |
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47nf |
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BASS |
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www.HIWATT470K log .com |
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PRESENCE |
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47nf |
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100K lin |
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10K |
220K |
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16 OHM FEEDBACK |
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100nf |
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TOP VIEW OF CHASSIS |
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470R |
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470R |
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1000pf |
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BRILLIANT |
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10nf |
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INPUT |
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V1b |
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470K |
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2K2 |
47nf |
470K log |
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VALVES V1,V2,V3 = ECC83 |
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BRILLIANT |
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V1 |
V2 V4 |
V3 |
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VOLUME |
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VALVE V4 |
= ECC81 |
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www.HIWATT.com |
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HIWATT® DR504 PREAMPLIFIER CIRCUIT DIAGRAM Copyright c HIWATT Amplification 2001 |
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