When using a shunt attenuator the seriesĮlement (resistor) can be soldered directly to the circuit with no extra wires in the Uses RIAA feedback rather than passive EQ. Then there might be some difference of loading on the phono stage, if the phone stage If you were using a shunt attenuator in a preamp between a phono stage and a line stage, As longĪs the source can drive the input impedance of the attenuator then it works fine. In our experience of overġ4 years with the shunt attenuator we have not found this to be necessary. To load the source with a constant input impedance.
#The signal path full#
Impedance but rises in impedance towards full volume. For instance, our 1K attenuator has at least 1K input The signal, so tends to sound the most transparent. The shunt attenuator has only one element in series with
![the signal path the signal path](https://www.twowayradiocommunity.com/wp-content/uploads/2017/01/radio-signal-path-loss.jpg)
We us a 24 position switch to switchĭifferent resistors to ground. Any useful comments or information would be greatly appreciated.Ī shunt attenuator uses a fixed value resistor is series with the signal (nothing else)Īnd varies the resistance to ground following it.
![the signal path the signal path](https://image.slideserve.com/796223/signal-path-l.jpg)
It seems that we often look down upon anything we add "outside the box", but many who do so often seem to not know what is "inside the box". I know that my ears will be the final judge, but I am curious to learn more about the often referred to Holy Grail - "the purity of the signal path".
![the signal path the signal path](https://www.groovephonics.com/wp-content/uploads/2019/08/pure2-signal-path-for-a-typical.jpg)
Simply speaking (and I do mean simply because I am not an engineer), Rothwell Audio believes that in-line attenuators are a better solution because they allow a better signal to noise ratio. an external solution like in-line attenuators? the needed resistors or other electrical components are added to, or replace existing components, inside the actual amplifier) vs. If a headphone amplifier is capable of being used as a preamaplifier, but it needs to have its signal attenuated because of a high noise floor, is ther any difference to the signal path if the amp is modified "in the box" (i.e. I am placing this question here because it primarily deals with headphone amplifier designs and/or modifications.