## 2 Materials and Methods
### Low-Cost TA-SLiCE
These components work together to apply the necessary force to ensure a tight seal, preventing any leakage and maintaining the integrity of the system. * Incorporation of aluminum inserts and use of standard hydraulic connectors. Metal inserts were used, as shown in Figure 3, to avoid threading directly into the 3D-printed piece, a process that otherwise requires threading taps to be applied afterwards. This method has limitations both in terms of sealing and the number of times the connections can be disassembled. Therefore, incorporating brass aluminum inserts using a heat source enables the creation of leak-proof and securely fastened connections in the base piece. This approach simplifies the use of standardized threaded hydraulic connectors (M5) for all connections to sensors and the cooling ports themselves. Figure 3: Constructive improvements of the heat sinks of the experimental TA-SLiCE used in this work. The blue piece is an internal aluminum sleeve that is part of the cooling jacket and is present in both the primary and secondary coolers. * Adaptive inertance. Figure 4a shows how in earlier TA-SLiCE versions, the feedback branch inertance was built directly into the 3D-printed part, including a fixed elbow. Figure 4b shows the latest design for this study, introducing adjustable inertance by connecting tubes of different lengths to an elbow with an adjustable angle. Thus, the design becomes more flexible and allows for adjusting the system's dynamics more precisely by modifying the path of the feedback branch, making the setup a more versatile tool for experimental investigations. * Simplification of RC loading  
To measure the output acoustic power of the constructed TA-SLiCE, the variable RC load shown in Figure 5 is connected to the power extraction branch. The valve acts as the variable resistance, and the tank positioned over the valve serves as the compliance. This configuration not only allows for the precise measurement of acoustic power using the two-pressure sensor method and RC load technique, but also enables the achievement of maximum power dissipation by operating the load with the valve open just before the point at which the piston ceases to move. * Change in thermal power input system. The last modification involved replacing the alcohol burner, previously used as the source of thermal power input, with two 50 W bulbs. This change led to an enhancement and an increase in the input power, as well as greater precision in quantifying the incoming heat. These adjustments are aimed at enhancing the system's functionality, increasing its reliability, and simplifying its replication. Further details about the design of the TA-SLiCE can be found in the work by [PERSON] et al. [5]. Figure 4: Feedback branch inertance enhancement of the experimental TA-SLiCE in this work. (a) First version of the inertance and (b) Improved version of the inertance. Figure 5: Variable RC load representation. \(P_{C}\) and \(P_{E}\) are the experimental pressure data acquired from the volume tank and the mechanical resonator, respectively. \(U_{1}\) is the volumetric flow rate through the resistance and \(P_{R}\) is the pressure across the resistance.