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Related Manuals for ALLNIC AUDIO H-8000
Summary of Contents for ALLNIC AUDIO H-8000
- Page 1 ALLNIC AUDIO H-8000 DIRECT HEATED TRIODE PHONO-PREAMPLIFIER OWNER’S MANUAL...
- Page 2 Please read this entire manual before you connect the H-8000 DHT Phono- stage Preamplifier to the other components of your system and the wall outlet.
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Page 3: Table Of Contents
TUBES SPECIFICATIONS WARRANTY TABLES FIGURES Please read about SAFETY before you attempt to use the H-8000 DHT Phono-stage Preamplifier - we care about our customers and the equipment, and we want you to enjoy this product for a long time! -
Page 4: Allnic Audio And The Pure Direct Heated Triode Breakthrough
Improvements have been made to the MC step up transformers, the output transformers and inter- stage units on the H-8000. In addition, the power transformers and diodes have been “beefed up” to allow for serious rectifier rolling of the excellent coveted choices from the 1930s, ‘40s and ‘50s. - Page 5 Both direct and indirect heated triode 5 Volt, octal-base rectifiers may be used in the H-8000. The H-8000 is shipped with 5U4G rectifier tubes, which are direct heated. While rectifiers can have audible effects, the rectifiers are not in the signal path; therefore, even with use of indirect heated rectifier tubes, the signal path in the H-8000 phono-stage remains pure DHT.
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Page 6: Introducing The H-8000 Dht Phono-Stage Preamplifier
_______________________________ INTRODUCING THE H-8000 DHT PHONO-STAGE The H-8000 is Allnic Audio’s top of the line phono-stage. Like all Allnic Audio products, it uses Permalloy (iron and nickel alloy) for its signal transformer cores. Allnic is grateful to Mr. G.W. Elmen of Western Electric for inventing Permalloy for transformer core use, and in so doing, providing an enormous service to recorded music listeners everywhere. - Page 7 600 ohms impedance matching method. In addition, the H-8000 also has the following features: • The H-8000 Phono-stage is transformer coupled, with the exception of the first gain stage, the HL-2K tube. No negative feedback design with three gain stages •...
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Page 8: What's In The Boxes
Allnic Audio dealer. We advise that you keep the boxes and other packing materials that your H-8000 units came in. They will be useful if you sell your H-8000, or in the unlikely event you need to ship the units for service. -
Page 9: Safety
• DO NOT cover the tops of the H-8000 phono-stage or power supply tube chimneys. • DO NOT drop the units! For those who may want to place the H-8000 or its power supply on some kind of after-market isolation feet or similar devices, dropping one side of either of the H- 8000 units, or the whole of either unit may result in damage to the units or tubes that will not be covered by warranty. -
Page 10: Power Connections
ZL-3000 power cords will work synergistically with the H-8000. • DO try to place the H-8000 and its power supply away from major sources of RFI and EMI; though well shielded, the H-8000 units will function best away from large power transformers and other sources of such interference. -
Page 11: Outputs
When you are facing the front of the H-8000, the two pairs of MC connections are on the right of the unit, with the two MM connections immediately to their left. To select the input you want to play, MC1 or MC2 or MM1 or MM2, use the MM or MC and Input 1 or 2 buttons on the right-hand side of the face of the phono-stage (See Figure 1). -
Page 12: Impedance Control
The process is simplified for you with the H-8000, as it has a phase control switch on the front panel of the phono-stage unit (see Figure 1). Switch down is normal; switch up is inverted. -
Page 13: Operation
To turn on the H-8000, push down the top of the rocker switch on the left-hand panel of the power supply (facing the front of the unit) near the front of the unit. This is the “on” position. Of course, to turn the power off, push down the bottom of the rocker switch to its “off”, position. -
Page 14: Tubes
Audio and its authorized representatives are not liable in any way whatsoever for any injury or loss incurred by the user or for damage to the H-8000, any of its parts, or tubes or replacement tubes resulting from the user changing or attempting to change tubes. -
Page 15: Specifications
SPECIFICATIONS FOR THE ALLNIC AUDIO H-8000 PHONO-STAGE Inputs: • Moving Coil (MC) × two (2) pairs unbalanced (RCA) • Moving Magnet (MM) x two (2) pairs unbalanced (RCA) Ground: • Two (2) x screw type terminals Outputs: • One (1) pair x unbalanced (RCA) •... -
Page 16: Warranty
Date of purchase is the date indicated on the invoice for the product issued by Allnic Audio or its authorized representative. For the warranty to be valid, a defective product must be returned to Allnic Audio’s authorized representative for service prior to any unauthorized attempt to repair. -
Page 17: Tables
Table 1: Some Common Equalization Settings RECORD LABEL TURN-OVER ROLL-OFF HMV, EMI-ANGEL, 500Hz -16dB (Sometimes -13.7dB) WESTMINSTER, EPIC, & COLUMBIA (Early versions 250Hz) (Early versions 0dB) 500Hz -11dB DECCA *Early ffrr 700Hz -11dB L'OISEAU-LYRE 500Hz -13.7dB ARGO, RCA (New Orthophonic), & BRUNSWICK (RIAA) 700Hz... - Page 18 Table 2: Impedance Combination Table T / R 1 / 13 1 / 20 1 / 26 1 / 40 +22dB +26dB +28dB +32dB 47 K ohms 278 ohms 117 ohms 70 ohms 29 ohms 1. Turn Ratio of Step-up Transformer 2.
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Page 19: Figures
FIGURES FIGURE 1 – H-8000 DHT Preamplifier Unit Front View... - Page 20 FIGURE 2 – H-8000 DHT Preamplifier Unit Rear View...
- Page 21 FIGURE 3 – H-8000 DHT Preamplifier Unit Top View...
- Page 22 FIGURE 4 – H-8000 DHT Power Supply Front View FIGURE 5 – H-8000 DHT Power Supply Rear View...
- Page 23 FIGURE 6 – H-8000 DHT Power Supply Top View...
- Page 24 FIGURE 7 – H-8000 DHT Step-up Transformer Gain Controls FIGURE 8 – H-8000 DHT EQ Controls...
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