Mod your Caiman

[StanleyB]

Since nobody has yet started off a thread in The Drawing Board for modding the Caiman, I guess the honour is left to me..

Going back to when people started experimenting with opamps, the LM4562NA came up as the most favoured one. However, many continued in their search for more bass. The overall feeling was that the LM4562NA pulled up a bit too early in the bass delivery department. But it has not been an easy search for a practical and cheap solution. Initially I settled on the LM4562HA. But I could hear, through A/B testing, that the HA offered a bit less detail. So I went about looking for my own cost effective solution, which is as indicated in the following pic.



The mod has only been designed and tested on the LM4562NA!!! I don't know how it will sound with other opamps. What I can say is that you could use a larger resistor for less bass ( up to 68K in fact). I am using 27K for the LM4562NA. The cap is 100nF.

Please make sure that you:
1. Trim the ends of the components,
2. Bend the parts back so that they don't touch the case when you close it!!!!!
3. Only attempt this mod if you are technically capable of removing the top PCB without breaking it.
4. Got access to the right parts and tools.

The bass will be on the same level as the HA, or maybe even the THS4032. However, it is far more solid and controlled.

Stan