CCS Zero temperature coefficient current source SMD for tube phase Inverter completely removes the distortion caused by the heated amplifier. Suitable for drivers ST-70 VTA and other CCS inverters. Direct replacement!
Manufacturer: | TES |
Price: | 9,00 € |
Availability: | In stock |
Overview of quantitative discounts | Number (pc) | Price | |
1 + | 9,00 € | ||
10 + | 5,00 € |
All VTA designs using the LM334 for the Phase Inverter tail suffer thusly: long warm up time, temperature sensitivity and balance instability. This can be remedied very easily.
Due to the LM334 instability, the Phase Inverter gain constantly changes, and as a consequence, the image wanders. The amps never reach equilibrium.
At a minimum, move the compensated LM334 to the underside of the driver board. Note the orientation of the compensated LM334. On the bottom, the LM334 rounded side is toward the transformers. Mounting under the board will prevent some heating by the tubes, helping to stabilize thecompensated LM334. The current may not achieve design values quickly as the internal chassis temperature rises slowly.
For the Temperature Compensated Full Monty:
CCS parts go on the PCB underside as shown. The amp now very stable. With compensation, the LM334 stabilizes rapidly and does not drift. Sonic image now remains rock solid. Phase splitter balance is surprisingly good, tracking perfectly from naught to clipping.
Dynaco MK IV & AB, ultimate MK IVi upgrade kit, auto bias for tubes ECF82, 6U8, 6GH8, 6GH8, 6F2, ECF80 DYNACO MK4 Auto Bias All described in the manual pdf in the "Download" section Preparation • Disconnect relevant wires from the original PCB ...
Dynaco MK III & AB, ultimate MK III upgrade kit, auto bias for tubes 12AU7 Amplifier installation diagram Resistor R39 in the bias source must be replaced with a value of 15 Ohm
ST-70 & AB, ultimate ST-70 VTA upgrade kit, auto bias INSTALLATION AND USER MANUAL FOR THE AB-Q-ST70-ST120 AUTO BIAS MODULE Introduction: This module has been designed to maintain a constant bias voltage through all power output tubes for your ...
Dynaco MK III & AB, ultimate MK III upgrade kit, auto bias for 6SN7 tubes Amplifier installation diagram Resistor R39 in the bias source must be replaced with a value of 15 Ohm
ST-70, PC-3 driver - ECF82, 6GH8, 6F2 DYNACO ST-70 - DRIVER 6GH8 ECF82, 6F2 Introduction: PC-3 driver board completely assembled, including tubes 6F2 (ECF82)
ST-70 & AB, ultimate ST-70 OCTAL 6SN7 upgrade kit, auto bias INSTALLATION AND USER MANUAL FOR THE AB-Q-ST70-ST120 AUTO BIAS MODULE Introduction: This module has been designed to maintain a constant bias voltage through all power output tubes for ...
ST-70 & AB, ultimate ST-70 upgrade kit, auto bias PC-3 driver - ECF82, 6GH8, 6F2 DYNACO ST-70 - DRIVER 6GH8 ECF82, 6F2 Introduction: This module has been designed to maintain a constant bias voltage through all power output tubes for your ...