Accutronics Reverb Tank 8AB3A1B

Turn heads with this 8" hempen guitar speaker, the Detroit 820. This model brings out an organic and vintage tweed sound, creating warm and full lows, strong and barky mids, and creamy highs to round out the top end.

The Detroit 820 is the perfect choice for guitarists looking for an upgrade to their blues or rock tone. High sensitivity, a hemp composite cone, a powerful ferrite magnet, dual-lug terminals for easy connectivity, and a sturdy steel basket come together to enhance your style and sound to make you the talk of the town.

American tone guitar speaker

• 8" (203 mm) steel basket diameter
• 20 watts, 4 ohm, 94 dB SPL
• 1" copper voice coil, Kraft paper former
• 10 oz ferrite magnet
• USA-made hemp cone
• Size, Nominal (inch & mm): 8" (203 mm)
• RoHS Compliant: Yes
• Nominal Impedance (Z) (Ω): 4
• Rated Power IEC268-5 (W): 20 Watts
• Rated Impedance (Ω): 4
• Continuous Power (W): 20
• Program Power (W): 40
• Frequency Range (Hz): 80 - 10,000
• Sensitivity (dB SPL) ¹: 94
• Resonant Frequency (Fs) (Hz): 139
• DC Resistance (Re) (Ω): 3.4
• Voice Coil Inductance (Le) (mH): 0.12
• Mechanical Q Factor (Qms): 15.36
• Electrical Q Factor (Qes): 4.45
• Total Q Factor (Qts): 3.45
• Mechanical Resistance (Rms) (kg/s): 0.47
• Compliance Equivalent Volume (Vas) (L): 10.92
• Suspension Compliance (Cms) (mm/N): 0.16
• Surface Area of Diaphragm (Sd) (cm²): 221.67
• Moving Mass (Mms) (gm): 8.28
• Magnetic Gap Height (mm): 6.0
• Coil Winding Height (mm): 6.35
• Motor Force Factor (BL) (T•M): 2.36
• Efficiency (η₀) (%): 0.64
• Efficiency Bandwidth Product (EBP) (Fs/Qes): 31.46
• Basket Type: Stamped steel with black powder coat
• Terminal Size (mm): 5.2 x 0.5
• Voice Coil Wire Material: Copper
• Voice Coil Former Material: Nomex
• Voice Coil Winding Style: Single Layer
• Magnet Material: Ferrite
• Magnet Weight (g): 283.5
• Cone Body Material: Hemp
• Dust Cap Material: Felt
• Spider Material: Cotton
• Net Weight (kg): 1.01

This speaker is an absolute gem for guitarists. With a powerful 40-watt rating and vintage cream colored basket with gold appointments, there's more to this speaker than meets the eye. The Alnico magnet provides a warm and rich tone that's simply irresistible to most players. It's what sets this speaker apart from our popular Anthem 12" ceramic magnet speakers. The 40-watt rating means this speaker can handle a decent amount of power while providing plenty of headroom. Mojotone is known for its quality craftsmanship, and this speaker is no exception. The materials are top-notch, ensuring a durable and reliable product that will last you a long time. It's built to take a beating while producing an amazing tone.

Technical Data:

• Size 12" Speaker
• Voice Coil 1.5"
• Magenet: Alnico
• Power Handling:  40 Watts
• Efficiency: 97 db
• Voice Coil Type: Nomex

• Mount for Handles, chrome
• Mountinghardware not included
• mounting hole distance ca. 34,7 mm

• Springs: 2
• Delay Type: long
• Size: long
• Replacement: Fender, Marshall, Ampeg "F"
• corresponds to Fender part number 006-4063-049
• Accutronics by Accu-Bell, Made in Korea

The TT VPUMP kit is a very effective working voltage converter which generates an output voltage of 90 V DC to 220 V DC  from a 12V DC input voltage.
The circuit is in use for many years now and it is proven. In this kit the circuit has been adapted to a compact size and optimized for use in small preamplifier chassis. So it is an ideal HV power supply for tube stompboxes and preamps without the need of additional transformers and HV filter capacitors.

The VPump can be operated with a standard 12V DC switching power supply.
The switching power supply is not included in the kit.

Specification:
Input Voltage: 12 V DC @ min 4 VA
Output Voltage: 90 - 220 V DC, adjustable
Output Current: 15 mA @ 220 V DC max

Files:

• Layout PCB V1.4
• Layout PCB V1.5
• Layout PCB V1.6

The LNDVerb kit is based on a classic Fender reverb circuit, but uses LND 150 Mosfets instead of tubes. These can be operated at voltages as high as 500 V, to get as close as possible to the characteristics of real tubes.

The kit can be integrated into an existing amplifier or can be build as standalone unit like the Fender tube reverb.

The unit needs less than 10 mA current, so a VPump for example can be used as power supply in a standalone build. If it gets integrated into an existing amplifier the already present power supply of the amp can be used to supply the needed voltage for the unit without the need to upgrade the power transformer.

A reverb transformer of the type 125A20B or similar and a reverb tank are necessary to operate the LNDVerb. These are both not included in the kit.

The needed RCA phone sockets and potentiometers are included in the kit.

Further informations and examples of the finished unit can be found in the PDF below.

Matching parts are linked below and can be ordered with the unit if needed.

Files:

• Datasheet

 

• Rotation angle: 300°±5°
• Tolerance: 20%
• Rotation torque: 50~350gcm
• Power rating: 0.25W
• Voltage rating: 250V
• Switch circuit: S.P.S.T. / Rotary
• Switch rating: 125VAC, 1A
• Rotational life: 15,000 cycles
• RoHS Compliant

• Rotation angle: 300°±5°
• Rotation torque: 50~350gcm
• Power rating: 0.25W
• Voltage rating: 250V
• Switch circuit: S.P.S.T. / Rotary
• Switch rating: 125VAC, 1A
• Rotational life: 15,000 cycles
• RoHS Compliant