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  #11  
Old 11-07-2018, 09:58 AM
ctzzzz ctzzzz is offline
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Quote:
Originally Posted by Tecknik1 View Post
I agree with getting a better preamp and suggest for the same price as a C2850 you can get a good used Audio Research Ref..
Having Wilson Audio speakers, normally Audio Research might have been a better match, so they say. But in my area there's a bigger market for Accuphase products, beside liking the Accuphase sound a lot.
I listened ARC setup (with ref6 pre, ref9 CD and a power amp, guess it was 150, I guess) just once, I liked it but I'm more familiar with Accuphase.
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  #12  
Old 11-07-2018, 09:59 AM
ctzzzz ctzzzz is offline
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Originally Posted by ktliao88 View Post
However, when play at high volume over 85 dbA, I can feel deterioration of sound quality. Guess this due to the characteristic of AB type amp. .
...And I thought that class Ab deliver bigger soundstage and more power, better suited to larger rooms...
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  #13  
Old 11-07-2018, 08:59 PM
Tecknik1 Tecknik1 is offline
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Im not sure I agree that you need more power then the A70 in a 500- 700 sq feet room, my room is 643 sq feet and my A65 drivers my 4ohm 88db speakers to 90-95 db crystal clear and compresses the room just fine. Depending in the sensitivity of your speakers I think there are other factors beyond the A70 not being able to drive your speakers to your desired listening level.The A70 also has a 800 damping factor which is twice the amount my A65 has.

The P7300 I have no experience with.
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  #14  
Old 11-08-2018, 03:27 AM
meltemi meltemi is offline
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Quote:
Originally Posted by ktliao88 View Post
However, when play at high volume over 85 dbA, I can feel deterioration of sound quality. Guess this due to the characteristic of AB type amp.
Or you might just overload your room at this level.
Is your room acoustically treated or do you use any electronic compensation?
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  #15  
Old 11-08-2018, 09:43 AM
ktliao88 ktliao88 is online now
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Originally Posted by meltemi View Post
Or you might just overload your room at this level.
Is your room acoustically treated or do you use any electronic compensation?
My room has simple acoustic treatment. I have Accuphase DG-58 but have not used it for a while. If music is too loud and room overloaded I can feel it.

Usually I don't listen music very loud but sometimes I have visitors enjoy super loud music. If I turn volume too loud the music of strings and brass start to sound harsh.

Maybe this "deterioration of sound quality" is not just from AB amp. I probably excessive expect my lovely P7100.
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  #16  
Old 11-08-2018, 03:38 PM
Formerly YB-2 Formerly YB-2 is offline
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Interesting that the most powerful Accuphase @8ohm is the 180wpc E-470 integrated amp.
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  #17  
Old 11-13-2018, 01:45 PM
puiutu puiutu is offline
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@ktliao88,
I cannot make to belive me 100%,normal,but try without DG-58,take care of line and of ground of all power cable,and!! don't use anymore on Accuphase gear Siltech and Cardas cable! If the problem persist,try with another final amplifier ,maybe with 2 M-6200.(this make wery good pair with c-3800 and B&W 803,(this speaker are at least a level below amplifier and source!!!).
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  #18  
Old 11-17-2018, 09:30 AM
ktliao88 ktliao88 is online now
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Quote:
Originally Posted by puiutu View Post
@ktliao88,
I cannot make to belive me 100%,normal,but try without DG-58,take care of line and of ground of all power cable,and!! don't use anymore on Accuphase gear Siltech and Cardas cable! If the problem persist,try with another final amplifier ,maybe with 2 M-6200.(this make wery good pair with c-3800 and B&W 803,(this speaker are at least a level below amplifier and source!!!).
I switch P7100 to A200 . The sound is very smooth even at 95db.
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  #19  
Old 11-19-2018, 02:43 AM
puiutu puiutu is offline
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A very good step forward!

Do not forget to consider the phase of powering all the devices in the system.
If it is possible to find out what is the real phase at the iec connector at the input of each device (not all devices comply with phase and zero standard), you may have a great improvement on sound.
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