F+T 220 µF @ 350 Volt, axial

6 tubes, matched as sextet

Very credible 6550 so far.
We recommend this 6550 for bass amps which are working with 6550 tubes, especially Ampegs.

Files:

• Datasheet

4 tubes, matched as quad

Standard EL34 made by JJ with a smooth and dizzy sound.

Limiting Values:

• Ua0: 2000 V
• Ua: 800 V
• Wa(max): 25 W
• Ug20: 800 V
• Ug2: 450 V
• Wg2(max): 8 W
• Ik: 150 mA
• Uk/f: 100 V
• Rk/f: 20 kΩ

Files:

• Datasheet

JJ's version of the ECC81/12AT7 tube type with a warm and soft sound. Often used for phase inverters or reverb drivers.

Files:

• Datasheet

ECC82 / 12AU7 medium gain pre-amplifying double triode.
Provides a very smooth sound with well-defined tones suitable for audio and guitar amplifiers.

Files:

• Datasheet

PULSE10
With its robust steel-chassis, PULSE10, provides a rock-solid bass performancewhether alone in a single speaker combo, in a 4x10 or even an 8x10 cab. Expecta tight, punchy low end with a warm mid-range that’s full of presence, bringingfocus and articulation to your playing. This heavy-duty driver truly delivers bassyou can feel as well as hear.

General Specifications

• Nominal diameter: 10", 254mm
• Power rating: 200W
• Nominal impedance: 8Ω
• Sensitivity: 94dB
• Magnet type: Ferrite
• Voice coil diameter: 2", 50.8mm
• Coil material: Copper
• Cone material: Kevlar loaded paper
• Former material: Polyimide
• Surround material: Cloth-sealed
• Frequency range: 45-3500Hz
• Xmax: 0.15", 4mm
• Gap depth: 0.31", 8mm
• Voice coil winding width: 0.62", 16mm

Small Signal Parameters

• D: 0.21m/8.3in
• Fs: 68Hz
• Mms: 32.9g/1.16oz
• Qms: 2.54
• Qes: 0.53
• Mmd: 29.26g/1.03oz
• Qts: 0.44
• Re: 6.03Ω
• Vas: 25.8lt/0.91cu.ft.
• BI: 12.88Tm
• Cms: 0.15mm/N
• Rms: 5.79kg/s
• Le (at 1kHz): 0.92mH

Mounting Information

• Cut-out diameter: 9", 229mm
• Diameter: 10.1", 256mm
• Mounting slot dimensions: 0.24x0.31", 6x8mm Ø
• Mounting slot PCD: 9.6", 245mm
• Number of mounting slots: 4
• Overall depth: 4.3", 110mm
• Unit weight: 6.6lb, 3kg

• Type: Electrolytic can capacitor
• Capacitance: 4700 µF
• Voltage Rating: 16 V
• Tolerance: - 20 % / +20 %
• Operating Temperature Range: - 40°C / + 105 °C
• Dimensions: Ø 16 mm x 32 mm
• Termination Style: radial
• Grid: 7,5

Images are for reference only. See Product Specifications

• Type: Aluminum Electrolytic Capacitors
• Capacitance: 220 µF
• Voltage Rating: 63 V
• Tolerance: +/- 20%
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 10 mm x 25 mm
• Termination Style: axial

Sovtek 6L6 WXT+ / STR430 - #16 - Mesa RED

• Corresponds to Mesa Color Code RED
• Price for one tube.

FAQ: If I order two or more of these tubes, are they all "matched"?
Yes, the tubes are all "matched" and selected for the above amplifiers.

FAQ: Can I change the tubes myself or does anything need to be adjusted?
Adjustment work is not possible on the above amplifiers (unless a bias adjustment has been retrofitted). The exchange can therefore be done without any adjustment or measurement work.

• Type: Electrolytic capacitor
• Capacitance: 10 µF
• Voltage Rating: 63 V
• Tolerance: - 10 % / +30 %
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 5 mm x 11 mm
• Termination Style: axial

Images are for reference only. See Product Specifications

• Type: Electrolytic capacitor
• Capacitance: 47 µF
• Voltage Rating: 63 V
• Tolerance: - 10 % / +30 %
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 8,5 mm x 17 mm
• Termination Style: axial

Images are for reference only. See Product Specifications

TT Selection: V1 - Low Noise
This tube is selected for sensitive input stages (V1)
Drop in Replacement for Mesa SPAX7 12Ax7/ECC83 

The Sovtek 12AX7WA is a defacto standard in 12AX7 tubes for many years yet because of its high dependability and its low noise floor.

TT Selection: Balanced
Balanced gain on both systems

Very linear working 12AX7 / ECC83 with long anode plates and spiral heating, which makes the tube less sensitive to interference from AC heating.
We recommend this tube for audio and high-end amps as well as for "modern" Fender amps with more overdrive, but also as an input tube in old Marshall JCM800s.

Note: Tubes equipped with long plates are commonly associated with a "warmer" or "richer" sound, whereas those with shorter plates tend to deliver a "tighter sound". However, tubes featuring long plates exhibit increased sensitivity to vibrations and mechanical disturbances, rendering them less ideal for critical applications.

The Sovtek 12AX7WA is a defacto standard in 12AX7 tubes for many years yet because of its high dependability and its low noise floor.