acalex said:
In my imagination I see the inpol 2 as a bit in the middle between the powerful ams and the romantic jadis. Having a bit of ams but not as much and a bit of jadis but again not as much.
"It seems that Pathos designers and technicians have achieved the target of obtaining the "mirage of an iron fist in a velvet glove.""
acalex said:
I will try to go out and listen but can't promise anything. Maybe after the mention of official forum taster will be more motivated to do that
, jocking of course. Stay reassured hat if I have an opportunity I will do and share my impressions with you.
appreciated
on another topic. it was always puzzling to me how a low power class A can even compete with high power class B or class D. now I know
it appears that it's dynamic power that counts. usual power ratings are calculated into sine waves (most likely 1kHz) into stable loads which yields maximum RMS rating, which says nothing about dynamic capabilities of an amp. in order to play music loud you need no more than 2Wpc RMS (sic!). even with moderately inefficient speakers it'll be plenty loud. with efficient speakers you'll need even less. even less than 1Wpc! anyway, the amp has to cater for dynamic peaks in the programme material (music) and that's where dynamic power comes to fore. in case of AMS35i it looks like this:
RMS power: 17V^2/ 8 Ohm = 36Wpc into 8 Ohm load (basically what is speced in the blurb)
dynamic power: 47Vpeak^2/ 8 Ohm = 276Wpc into 8 Ohm load (!)
data taken form MF's brochure for AMS35i. so, as long as those values for voltage delivery are not taken out of the air it means that AMS can easily play very dynamic material loudly in domestic environment without even breaking a sweat (no clipping)! I'm not quite sure about my calculations here but it may suggest dynamic headroom in excess of 24dB! provided you use AMS with suitably efficient speakers - such that will allow you to listen at 1Wpc RMS in your listening position. I'd expect anything around 90dB/1W/1m mark listened at 3m will suffice. that means that even hugely dynamic pieces, like philharmonic works, will be reproduced without clipping. sure it'll be on the edge of AMS's capabilities but does it really matter in the end?
I'd like to add here that I'm not trying to diss any of those horse power amps. if they can play a sine wave at 500Wpc or more into 8 Ohm load they definitely will not falter reproducing music. the thing is; you don't need all that power in your room! this is definitely very relieving info. you can easily go for a dynamic class A amp not worrying it will clip at some stage playing music. and thus you can enjoy the best sound quality (everybody knows class B is a no-go, not to mention class D). the only condition amp's designer has to meet is to equip the amp with a potent power supply (possibly with a large energy reservoir. unfortunately capacitor banks costs money) so it could recharge appropriately fast to be able to deliver enough voltage/ current exactly when asked for.
I thought you guys would like to hear about my recent findings.
I only wish I had similar Voltage delivery data for Pathos's amps... but I'd expect them to be very dynamic too. AFAIK power supply makes up bulk of the weight in those +40kg beasts (TT and Inpol2).
regards!
P.S. I think what I just wrote about dynamic power and RMS power requirements is nothing new to you, or it's nothing anybody reasonably thinking wouldn't come up with. but in face of wide spread propaganda that you need at least XXXXX Watts of power in order to fully appreciate listening to music in your home I thought I'd write this post. I also think that those who claim you need kilowatts of power to drive speakers simply don't get it.
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