How do you change the speed on a akai gx4000d?
To change the speed on an Akai GX4000D reel-to-reel tape deck, locate the speed selector switch on the front panel. Depending on the model, you may have options for multiple speeds such as 3.75 ips, 7.5 ips, and 15 ips. Simply flip the switch to the desired speed setting to change the playback speed.