HeadphoneGits
Echo TDS-16/16
Vintage Planars / Soviet Planars / Echo TDS-16/16
Frequency range: 20-20,000Hz
Resistance: 16Ohm
Rated power: 2mW
Sensitivity: 94dB
Nameplate power: 100mW
Dimensions: 80mmx180mmx245mm
Weight without cable: 300g
Magnet brand: M7BI300
Magnet diameter: 55mm
Membrane material: polyethylene terephthalate film 8 microns thick
Voice coil material: aluminum foil 14 microns thick
Voice coil conductor width: 9 microns
Distance between turns: 9 microns
Number of turns: 76
Frequency response from manual (recent measurements at the bottom of the page).
Driver (Kiev version). Magnet strength handwritten on the magnet in white.
Links
Production variants
NPO Kvant (Kiev)
See this lossy.ru post. Seem to be also branded as ‘Spectrum’ instead of ‘Echo’ (pictures of the Spectrum variant), with slightly different but incompatible cup dimensions.
Orizon plant (Smela)
Post on lossy.ru discussing the relative qualities (Smelov considered to be inferior), these the TDS-16/40 which are a different model with a different driver technology (see pictures in the first post of the lossy.ru thread which are indeed the 16/40).
Measurements
Flat plate custom rig measurements using an Umik-1 microphone. Red = Echo TDS-16/16 Kiev version, Grey = Stax L500 as reference.
