I believe the line level spec is 1 V RMS or about 1.4 p2p. Also, it's 
typically terminated into about 10 K ohms (high impedance input to tape 
recorder - FYI low is typically 600 ohms). This is all from memory - you 
might want to confirm this.

Alden

Olin Lathrop wrote:
> Michael Rigby-Jones wrote:
>   
>> A quick simulation suggests approximately 1.6 volts pk-pk with the
>> output unloaded, assuming 5v pk-pk input.
>>     
>
> That sounds about right for unloaded.  If the signal is still too strong
> after loading by the tape player input, increase R1, R2, and R3 a bit to
> compensate.
>
> Actually I don't remember now if "line" audio nominal is supposed to be 1V
> peak-peak, RMS, or +-.  Chances are the tape player can deal with a wider
> range of levels anyway.
>
>
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