Allison Laboratories 2A Audio Filter

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The Allison Laboratories Model 2A tunable filter is a passive network device with independent high cut-off and loss cut-off sections. The maximum passband is 15 c/s to 10 kc/s or, if the high cut-off section only is used, from z.f. to 10 kc/s. The maximum input is 1V r.m.s. and both input and output impedances are 600 ohms. The insertion loss does not exceed 2 dB and the attenuation rate is 30 dB/octave. Would make an excellent companion to a boat-anchor receiver to provide better selectivity. Too heavy to ship affordably. Pickup or delivery in Burlington.