Akai 747 w/DBX question

Thanks for the info guys. 

As Cleeds alluded to, when dbx type II is incorrectly set up (it is dependent on proper level settings for optimal results), you may experience pumping or breathing artifacts. The Dolby “A” noise reduction that Cleeds also referred to is a commercial product that also uses compression, but is usually not found on hifi tape recording gear. 

@sleepwalker65 

Right. I actually remember that Dolby made a stand alone component to provide the DNR. I had forgotten that you can buy both devices. I think I will look into the 224 because I do like the Dynamic range extension that is gives as a benefit. This way if I decide to go to another deck or the one I have breaks to where It can't be repaired due to lack of parts etc I can still have the feature. The last 747 I had stopped recording. The part needed according to the repair shop I took it to (still have my doubts that was the problem) was not able to find the part and neither was I with the part number he referenced.. anyway my point is that when they break beyond repair not much you can do but buy another machine. So I will see if I can find the 224. Hopefully there is one floating around out there. 

Are you sure its the 224 and not the 234?

I found it. I was not searching for the type II. Nice