I disagree -somewhat. I drove K-horns for years with a 100 watt Mac and it sounded great. What is important is how quiet the amp is, and also if the amp is able to perform at it's best at very low levels of it's full potential power curve, and I am not familiar with the No. 23 except that it has a very good reputation for being smooth and having well controlled bass. I am sure that it will be quiet enough. I bet that you would be surprised, try it.
