Speaker power handling


I'm currently demoing some Dynaudio Focus 140 speakers rated at 200 watts rms/iec @ 4ohms.
With my older PSE amp rated at 195 w@ 4ohms the sound is good.

Now my concern is to try my Classe CA400 that is rated at 800w @4ohms without having an expensive repair bill. I do at times listen at higher volume settings with peaks around 95+db.

Should I resist temptations trying the Classe?
yagimax

Showing 10 responses by weseixas

Yagimax,

If listening at 9 ft and you do require 95 db , then go for the bigger amp ....
Hello Yagimax,

I would go to the bigger and better amplifier first , you can upgrade the speakers later. You are most likely to damage your speakers clipping the lower powered PS audio than with the bigger amplifier.

regards,
Hello Yagimax,

By Stereophile :
The Dynaudio Focus 140's estimated voltage sensitivity was 86.1dB(B)/2.83V/m, which is slightly below the average of the speakers Stereophile has reviewed,

You never did list your listening distance so i will use 9 ft , your speaker will require 128 watts to achieve 95 db @9ft listening distance, so you must be a lot closer for you to get 95 db with your PS audio, maybe 6 ft ? at 6 ft the speaker would require 95 watts...

It's quite possible you were clipping your PS audio to achieve such a high level, so i would expect much better sonics from the higher power amp when listening at such a high level, yes very much so.

regards,
Shadrone,

Port noise would be in significant, because it is rear firing, the only way to do vented speakers for hi-fi listening IMO. The rear vent makes the speaker sensitive to wall placement and with a -3 db down point of 40 hz, it will not be bass shy ( relative)if placed correctly. I would be more concerned about it being overdriven and pushed into distortion at 95db, where his current PS audio amplifier would quite possibly be clipping at that point.....

regards
Hello Rrog,

If Yagimax wants to drive his speakers to 95 db 9 ft away he will need an amp with at least 300 watts /ch if not to have any clipping...

A bad power amp is just that, Bad, big or small. Speaking absolutely due to the dynamic power necessary to reproduce "live music" most if not all speakers will benefit from a big un, of course if this is not the goal and one has high efficiency speakers maybe some 25 watt deal could work at a moderate level.

regards,

Rrog,
Please explain your position...

I will stand behind mine that i have never encountered a speaker that did not sound better on a bigger amplifier. I'm also not from the school of small amp sounds better than a big un ! never experienced that before after trying many, many over the years ...

i guess first we need to define what is considered a small amplifier..

regards,
Rrog,

Not a SS crowd, it's more a sounding like live music crowd. -)

Not because an amp has 800 watts mean he will be using it all, nor will yagimax be using 300 watts rms, most likely 300 watts music peak and only if he decides to go crazy with the volume, if not i don't expect any issues...

Guarantee it will be the best he has ever heard those dynaudio's..

Regards,
Not sure Rrog,

I was only addressing the power situation, not his subjective reasoning for choosing one over the other. I think he did state he has never tried the bigger amp on that speaker as yet.....

I do agree the speaker is small for large scale music, that aside it will still sound it's best when being driven by the larger amp IMO and i never suggested 200 watts RMS, but it will require close to 300 watts peak to meet his db criteria, with out clipping .....

Just saying !!!

regards,