Dynaudio focus 360

goodlistening64

I’am glad you made that point about the impedance.

Yes ,I believe you when you say the  impedance mis-match is probably not really the main problem.

I do know that when I replaced my Adcom pre with the Mac,I loved what it did to the vocals on most of the music I listen to.

And that is with the mis-match of the Mac pre and my Adcom amp.

I have found that by moving the speakers closer to the front wall and turning the bass down on the preamp that 90% of the problem I was having with the vocals has gone away.

I guess I'am saying I know you are right about not counting on a better impedance match to solve all issue’s,and I’am not.

I have been reaching out to owners of these speakers and they say the extra currant should fix that last 10% of the issue with any weakness in the midrange

I really like the way it sounds now,and see no reason to change the preamp at this time.

If I find I don’t like the sound of it later I already have someone that wants to buy this preamp/tuner.

I also will take your advice on exploring a cable upgrade.

I was wanting to wait until I got the new amp,but I guess I should at least start looking now.

Thanks again for clarifying the impedance issue.

mrdecibel

I can see your point,.

I always wondered why on even expensive guitar amp's they never seem to put anything better than a run of the mill IEC power cord.

gano

I almost forgot to ask you about damping factor.

Could you give me a example of what mine is or what it should be?

My speakers are 4 ohm and the output impedance of the Adcom is rated down to 4 ohms,as far as the resistance of my cables I don't know.Just figure towards the high end of the spectrum.

Thanks

mrdecibel

I know you are probably correct in saying a this amp will show how noisy a old Mac can be.

I called Conrad Johnson just to make sure I could get this serviced down the road,and I was pleasantly surprised.

Someone picked up the phone on the 3rd ring.

I asked to speak to customer service and he said I.am the head of the service dept. can I help.

I asked about setting parts or service for the amp and was told they have a ample stock of any part for the amp.

I also asked him about the matching my old Mac to this amp,He said it will work fine and the high input impedance was chosen to reduce the noise when using with tube pre-amps.

He said try the Mac,but he said I would be amazed if I paired it with a Premire 17 or 18 CJ pre-amp as it was designed to complement this very amp.

When I described the earlier problem I was having ,he said it was probably both the amp and the cables.

I was told the Adcom does not have the currant to really power a somewhat inefficient speaker at 4ohms,and cheap cables will just make it worse.

He also said this amp is the one they get the most requests to do a reissue of.

Anyway,it was nice to be treated with respect,and without being told to get the latest model.

Thanks

jeffbij

I have received so much great information,and I have taken notes trying to put in a logical format to have a practical check list.

Well I know its a little late for that.

I have looked at lot of the suggestions for amps given,and most of the newer amps do not either have the correct impedance or currant to work with the speakers and pre-amp I now have.

Some have said get rid of the Mac and then you will have so many more options.

I really like the sound of this pre-amp,and since making adjustments as far as speaker location and just listening to lot of different music and realizing I can turn the bass way down with these speakers and I will get much more vocal clarity,I have come to the conclusion that I could be happy with everything just the way it is.

I will probably try the CJ amp to see if it will sound as good as I think,and if it doesn't I will sell it and try something else.

I going to sell a lot of my guitar gear so maybe I can get one of those sweet modern amps next.

I really appreciate all the help