5-String RT Soapbars
4.06″ [103mm] x 1.17″ [30mm], 14″[356mm] Radius Top 5-String Bass Soapbar – This soapbar shape was first used in 5-String Tobias basses before they were acquired by Gibson. Originally, the shape was called MT after Mike Tobias, and it was exclusive to Tobias for many years. The name was changed to RT (Radius Top) for general use. The RT shape has been used for Ibanez basses for a couple of decades as well. While we have made it as a special order for many builders, we have just made it available to all in 2025.
Your voice is a combination of your pickups, strings, instrument materials and construction, and playing technique. The voice of your pickups is determined by the sensing structures – the magnetic field projected onto the strings and the interaction of the magnetic field with the coils.
We offer several carefully designed pickups series with different sensing structures so you can develop your voice. Check out the sensing structures below – Blue represents a South magnetic field, and Red represents a North magnetic field. Opposite polarity fields is used for hum-cancelling.
