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Doepfer A-171

Doepfer A-171

Doepfer A-171 VC Slew Limiter

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2 customer ratings:

Overall rating
5 out of 5 stars
handling
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5 Stars
2 Customers

2 customers have given this product a 5-star rating.

Of these, 2 customers have written no texts or given their feedback in another language.

4 Stars
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3 Stars
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2 Stars
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1 Star
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Customer ratings of similar items

Rating from Doepfer A-149-2 Doepfer A-149-2

Doepfer random voltage extender module.

Jonathan64, 11.09.2013

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This module cannot be used on it's own, but rather is intended to provide additional facilities for the A-149.1 which generates random voltages (which can be quantised). It provides eight digital outputs each of which switches at random but synchronised to the clock input of the A-149.1. I have found it useful for generating random "note on" and "note off" signals when creating random self-generating musical sequences (Stochastic music). Used in combination with a logic module A-166 a useful range of signals can be generated at different time intervals to make the music more interesting to the ear, rather than all the notes being the same length. There are numerous other uses for randomly generated logic signals in a modular system apart from triggering envelope generators.
Rating from Doepfer A-138b Doepfer A-138b

Doepfer A-138-B Mixer

Blair, 18.11.2013

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The A-138b is essentially a 4 into 1 mixer optimised for audio signals rather than control voltages. the 'b' in the name means the the mixer uses logarithmic rather than linear potentiometers.

For me the A-138b is an essential piece of equipment because it enables me to sum the outputs of up to 4 sound sources (for instance VCO's or noise sources) before sending the combined output to my A-108 Low pass filter module.

With one input employed, and with the channel and master levels set to 10, the volume of the output is the same level as the input signal. in other words, this module will not increase the gain of an input, it will only attenuate it.

When using multiple inputs I find I have to reduce the levels of the individual channels quite a lot, otherwise the output from the mixer becomes to much for next module in the chain. So if I am using 3 inputs, I will use a maximum of about 33% of each channel's volume.

The mixer appears to operate very quietly. It does not introduce much 'hiss' into the sound. Some reviewers have found otherwise , so it may be that my ears are not as sensitive as theirs.

I have rated the A-138b as 5 stars except for features, which I have given a 4 for. The reason for this is that the Doepfer website indicates that with no input into channel 1, the channel 1 level will act as a +5 volt DC offset. In other words, the unit *can* increase the level beyond that of an input signal. However, my unit doesn't work like this. As delivered, all 4 inputs on my A-138b work in the same way. The manual says there is a jumper I need to re-position on the rear of the circuit board to achieve the +5 volt DD offset with input level 1. I think this option should have been made available as a toggle switch on the front panel. It would be useful on occasions when I am only using 3 inputs, but I do not want to have to remove the unit from its case and re-position a jumper each time to achieve this!

Overall, another useful and great value unit from Doepfer, in my opinion.
Rating from Doepfer A-182 Doepfer A-182

Unbelievably useful

Stephen662, 15.05.2013

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This module will not make a cup of tea. It is useful in just about every other modular situation. Use it to switch audio in and out, control gates or CV routing. Or just use it as a mulitple. Probably finds a place in every patch when I need hands on control for variation or themic jumps (imagine using it with two sequencers!). Brilliant.
Rating from Doepfer A-138b Doepfer A-138b

Doepfer A-138b

Andreas2327, 28.07.2014

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Simple and affordable mixer. Linear for CV and logarithmic for audio. Those two always get mixed up and confuses everybody but there you have it! Linear for CV and logarithmic for audio!
Show variations of this product
Doepfer A-171
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Doepfer A-171

Doepfer A-171 VC Slew Limiter

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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Doepfer A-138b
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€55
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Available immediately

This item is in stock and can be dispatched immediately.

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item number 114733
sales unit 1 piece
available since July 2007
Total rating
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at thomann.de Rank 63630
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Offers include 23% Irish VAT and are valid as long as stocks last. Shipping costs to Ireland are 15 EUR, free shipping on orders above 199 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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