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Dynaudio C1 II owners - how loud can you go?

Hi All,

I just had a question regarding the review of the Dynaudio C1 II's here: http://www.tonepublications.com/review/dynaudio-confidence-c1-ii/

Jeff mentioned that with the right amount of power, the speakers never run out of headroom. I bought a pair last year and connected them them to a Peachtree Nova220SE (class D - yes, but it's rated 350w at 4ohms). I download and stream a lot of digital music off my mac with itunes+amarra or via tidal, and this amp made sense - I listen to this setup in my bedroom and don't have a lot of room for separates.

My question for the forum is, do these have a problem when playing loud? I can't seem to get more than 10-11 o'clock on the volume control on the peachtree with bass heavy tracks before I hear a high pitched "pop" (almost a bird like "tweet") and have to lower the volume. Does anyone else have this problem? If so, were you able to correct the problem by swapping amps, cables, etc? Am I just expecting too much from these speakers?

Thanks,
Derek
dmc703
b_limo's avatar
b_limo
829 posts
 
+1 TLS... almost certain
xti16
1,495 posts
 
A couple of years ago another member had a similar symptom. But he described it as a screech/scratching sound in the mids (vocals). He also had a V70SE (by that time I upgraded to the V110). He contacted Dynaudio and they thought it was a problem with his V70SE. They gave him a sweet deal on a new V110. When it arrived same problem. He said he took the C1's to his local dealer who confirmed the speakers caused it. Turns out both woofers coils had swollen up and were rubbing. This only happened at high volumes with bass heavy tracks and affected mostly female vocals.

If that is the case what you can try is with the system off push the woofer drivers by hand and both listen and feel for smooth movement. If you hear a scratchy sound or feel uneven movement the coils could have swollen.

That person bought his C1's used and really had no idea how the original owner used/abused them. I never found out if he had them repaired or just gave up on them.

To me it sounds like the woofers are bottoming out. When I had either the original C1's or MKII/Sig the bottoming out was a POP kind of sound. I personally heard that and made sure I never turned it up that loud again. It also happened with music that was very compressed.
b_limo's avatar
b_limo
829 posts
 
I have a Nova pre / 220 amp combo and if it has similar power to your Nova 220se, 11 o'clock is pretty loud...

I've got Monitor Audio GX50's that have the same 86db sensitivity rating as your Dyns and I don't turn it up past 10 and usually listen at 8 or 9...

how big is your room?
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