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DTJF345

Thomastik JF345 Electric Bass Guitar 5 String Set Flat Wound


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The Thomastik-Infeld JF345 Jazz Flatwound is a complete 5-string set engineered specifically for 34" long-scale electric bass guitars. Drawing from Thomastik-Infeld's legendary double bass heritage, this set pairs supple round steel cores with internal silk inlays and outer windings of true ribbon nickel alloy.

Engineered for effortless playability across all five strings, the JF345 delivers remarkably balanced tension, minimal finger noise, and reduced fret wear. From the defined, punchy low B up through the singing high register, this set produces extraordinary tonal depth, warm sustain, and an organic, focused fundamental tone.

Features

  • Complete 5-string flatwound set for electric bass guitars
  • Precision-engineered for 34" long-scale instruments
  • Supple round steel cores with internal silk inlays for unmatched flexibility and feel
  • True ribbon flatwound outer winding made from proprietary nickel alloy
  • Polished, ultra-smooth surface minimizes finger squeak and fret wear
  • Delivers warm vintage tone with clear harmonic definition and deep, authoritative low B
  • Balanced medium gauge setup (.043 - .136)

Specs

  • Model: JF345 (DTJF345)
  • Instrument: Electric Bass
  • Series: Jazz Flat Wound
  • Set Type: Bass String Set
  • Scale Length: Long Scale (34")
  • Gauge: Medium (.043 - .136)
  • Number of Strings: 5
  • Total Set Tension: 79.40 kg / 175.04 lb

String Specifications

  • G String – JF34043 (DTJF34043): Round steel core with silk inlay, nickel flat wound ribbon, 0.043" (1.09 mm) gauge, 16.80 kg / 37.03 lb tension
  • D String – JF34056 (DTJF34056): Round steel core with silk inlay, nickel flat wound ribbon, 0.056" (1.42 mm) gauge, 17.00 kg / 37.47 lb tension
  • A String – JF34070 (DTJF34070): Round steel core with silk inlay, nickel flat wound ribbon, 0.070" (1.78 mm) gauge, 14.20 kg / 31.30 lb tension
  • E String – JF34100 (DTJF34100): Round steel core with silk inlay, nickel flat wound ribbon, 0.100" (2.54 mm) gauge, 15.60 kg / 34.39 lb tension
  • B String – JF34136 (DTJF34136): Round steel core with silk inlay, nickel flat wound ribbon, 0.136" (3.47 mm) gauge, 15.80 kg / 34.83 lb tension