EML 5U4G
$430.00
The EML 5U4G is part of Emission Labs mesh plate series of full wave rectifiers. Designed from the onset as the ultimate 5U4G, these tubes have several key features.
The first being the oversized 100% mesh anode construction. This provides an extremely low mechanical resonance. The plate area, filament design, and internal geometry are designed to provide the classic/correct 5U4G dynamic characteristics, along with excellent voltage and current handling.
Unique to EML is the implementation of a slow warm up filament design. This is cleverly implemented to provide a 7 second (to full output) “soft start” without affecting the tubes performance. The soft start function has several advantages including prolonging filament life.
Additionally EML uses a high quality ceramic base which is rubber isolated. This further improves voltage handling and minimizes chassis induced vibration.
Designing tube rectified power supplies is not trivial. All aspects of the voltage source (power transformer) and load must be considered. An exotic and high performance tube such as the EML 5U4G will reward you with exceptional sonics and durability, when implemented correctly. Additionally, substituting rectifiers in existing circuits is not always straight forward. Where a 5U4GB can always be used in place of a 5U4G, a 5U4G cannot always be used in place of a 5U4GB, due to differences in limiting values.
Jac has done an excellent job outlining many of the aspects one should consider when using tube rectifiers, directly on the factory Emission Labs 5U4G page. The data and illustrations on this page provide the framework, or lens, by which all tube rectified power supplies should be viewed.
If you need technical support regarding any aspect of rectifier tube usage, please reach out to us.
All Emission Labs tubes are inspected and tested in-house before shipment. All EML rectifier tubes are shipped in factory packaging.
EML 5U4G Short Data:
Filament = 5V, 3A, +/-5%
Limiting Values
- AC input voltage = 550VRMS (per plate)*
- First/Reservoir cap = 40uF*
- Current Output = 225mA (Cap-Input), 265mA (Choke-Input)*
- ***These values are not possible simultaneously.
- 170Ω Raa minimum, increasing at higher current/input-capacitance
Eurotubes is an official Emission Labs dealer. All EML tubes purchased through Eurotubes come with an automatic 1-Year (2,000hrs) warranty, and are eligible for the factory registered 5-year warranty.