I can answer about the LFOs I have in my system: 
A145 is the fastest yes. The 146 and 147 are much slower.
The A143-9 is also very fast.
And with a small modification it's a nice sine VCO that can be used for linear FM.
 I can highly recommend the A143-9 !

On Thu, Feb 12, 2015 at 2:06 PM, Neil Kagan blinkenlicht@... 1 < Doepfer_a100@yahoogroups.com > wrote:

 

Ok, can someone tell me which Doepfer LFO has the fastest available rate It seems the A-145 does, having read the manuals.

Neil

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