2. amps-preamps
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Is too much power in an amp really a problem?

As recently as 8-10 yrs. ago, I maintained my card carrying residence in the ‘lots o’ watts’ camp’ regularly. I’ve since held only a casual attendance to that group, and since departed with the acquisition of higher eff speakers, and lower powered tube amps.

Now I’m debating the future and appropriateness, of that perception and considering another SS, or a non tube amp. This time a digital amp… such as a class D or ICE configuration… as in a Bel Canto, PS Audio, Spectron, Wyred 4 S, etc., to use for both music and HT with my current Silverline speakers.

Several of these amps profess IMO rather high ratings for output power. 250, 300, and 500 wpc into 8 ohms, as your ‘oh by the way’ choices, and then doubling up should the impedance drop off to 4 ohms!

1000 wats per!

E frekin' Gad!

Truth be told, I’ve never put together a high eff speaker & high powered amp combo, nor felt the need, so I’m in a whole new ball game now, or am I?

I understand immense power reservoirs on tap, (like with my former BAT vk500) is a good thing, as well as are other attributes like a good input impedance, and control or damping figures. that amp ran VR4 JRs though, and both have since departed la casa Sunburn.

Additionally, my current tube mono blocks (120wpc) handle my 93db Sonata IIIs quite well IMO. My Odyssey Stratos SE also does a good enough job too rated at about 160 wpc. Between the two amps, the Dodds are the better sounding, and appear to have better control and more ease with the Silverliness.

In making a choice on one of these Digital or ICE amps, should the power numbers be regarded as something other than what they are? I mean more likely, do 250 wpc into 8 ohm rated ICE amps provide likewise results or the same feel, of an SS amp having the same output? Ie., control, power reserves, etc?

I do feel a good match between the speakers and amp is a prime consideration now, and do not wish to buy far too much or too little an amp, given these thoughts.

There too is the thought of the amps actual 'voice' itself to consider.

I sure wouldn’t want to smoke the speaks with too little or too much power on tap. Or have the amp ()s) always loafing. Or is that loafing bit just nonsense?

Any experiences and insights here on the digi power front is more than appreciated as I'm trying to get a 'feel' for this 'new to me' amp topology and not over or under buy.

Thanks much.
blindjim
guidocorona
4,298 posts
 
Larryi, what you heard is probably the old Rowland 302. I agree completely with you, it sounded nice but it did not stir any emotions. That is why I was kind of skeptical when I first auditioned its successor, the 312. . . luckily it is a completely different beast and it is a greatly involving amp. . . and I have it in my system. But its price point is probably not what Jim is looking for, nor is its throughput. That is why I am suggesting the Bel Canto Ref 500.

Class D amps are evolving rapidly. What was the state of the art in Class D designs just a few years ago has already been long surpassed. It is not only a matter of newer modules, but also of a learning curve by class D amp designers. The Rowland 302 does not represent the current state of the art in class D sound, and your misgivings about it are quite justified.

It is worth pointing out that class D and ICEpower amps are neither inherently superior nor inferior to any other technology. I can say the same of tubes or classic SS. ICEpower modules are basic components just like 6550 tubes. One can create a very basic device with them, or one can create a cost no object amp. We can't really judge one by the other, nor we can make some broad assertions about sonic footprints of the class in general, because class D amps today tend to sound very different from one an other.
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jaymark
505 posts
 
I run 300 wpc Sheng Ya monoblock solid state amplifiers on the low end and Wyred 4 Sound 125 wpc amps on the top end of Emerald Physic speakers. These are highly sensitive speakers yet they sound specatcular with the powerful amps I am using on the low end. Do you need this much power? Probably not with these pseakers. But again the sound is spectacular, emotive, and impactful.......I was surprised very pleasantly....
blindjim OP
3,092 posts
 

I used Bel Canto solely as a reference point. They aren't on my short list for consideration. Only Wyred 4, Rowland, & Spectron are. The latter two probably will be cost prohibitive though.
joeylawn36111
574 posts
 
Kijanki is right - an underpowered amp can clip when played loud, and clipping of an amplifier causes high-frequency harmonics that are routed to the tweeter by the crossover, possibly overloading it.
guidocorona
4,298 posts
 
Jim, in the Rowland lineup, there are 3 amps that may fit the bill if you augment them with a JRDG PC-1 rectifier:

Model 102 stereo -- 100W over 8 Ohms.
Model 201 monoblocks -- 250W over 8 Ohms.
Continuum 250 -- 250W over 8 ohms also contains linestage circuit of Capri preamplifier.

The PC-1 seems to greatly enhance musicality of these amps. Similar active power factor correction (PFC) circuit as the PC-1 is already built into the 312 and the Continuumm 500.
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