I've never heard the EM2s except on Youtube, where the sound experience is masked by the quality of recording and playback equipment. I am aware of their reputation and so have 2 sat here waiting to go into some of the class 37s which are in the queue for sound fitting. I need to get my hands on a milling machine or a Dremmel to do so.
This afternoon, I have disconnected the EM1 from the chip and just used the standard Loksound sugarcube which is hugely disappointing. The volume is still low even at the max setting of ~192, not enough growl and it is easily over powered by the EM1 in another class 37 as it passes. It's a bit of a shame as I hacked the fuel tanks out on a limited edition Bachmann 37501, so not a job for the foolhardy.
I seem to be getting conflicting information when I rummage around t'internet on what is acceptable with regards to min/max Ohms and Watts on the Loksounds. I know Richard said to put them the sugarcube and EM1 in parallel, but when do the calculation, it seemed to be that the EM1 (rated at 0.5W max) would be over powered due to the manner of power distribution of the circuit for the speakers, so I chickened out.
Using the site "https://www.speakerimpedance.co.uk/":
EM1 = 0.5W max, 4 Ohms
Sugarcube = ??W max, 8Ohms
Loksound V5 = 3 W amplifier
Series
Total Impedance = 12 Ω
EM1 = 1 Watts
Sugarcube = 2 Watts
Parrallel
Total Impedance = 2.6666666666667 Ω
EM1 = 2 Watts
Sugarcube = 1 Watts
Now, I am stumbling about in the dark here and understand that Charlie, Legomanbiffo, Richard, et al on this site have far greater knowledge but can anyone confirm if the calculations above look correct, or if the Loksound V5 documentation might say 3W amp, but isn't, or if the impedance and wattage(?) of the circuits are right, or if I am looking at the far end of a fart and should in fact just say meh.
I was really happy with the Loksound V4 combined with the EM1 in the tanks and the standard speaker supplied under the roof fan. Running it today at the club it brought a smile to my face.