lusk Posted May 4, 2014 Share Posted May 4, 2014 I know that class a amps run hot but didn't know they would heat the whole room up :blink: Link to comment Share on other sites More sharing options...
Sub Sonic Posted May 6, 2014 Share Posted May 6, 2014 Hmmm sounds like I'll have to get the F5 project finished to save on those gas heating bills LOL! :-) SS Link to comment Share on other sites More sharing options...
Demondes Posted May 6, 2014 Share Posted May 6, 2014 It's great for my Luxman amp too, although it sounds sublime any day of the year. I had no idea it ever got cold in Brisbane though Nothing like sitting in your underwear in the listening room because the temperature has reached 29C, primarily because your wife has closed the door due to "noise". The Air-conditioner and fresh air remain on the wrong side of the listening room door Yes last summer was a shocker in Melbourne for class A amps Link to comment Share on other sites More sharing options...
Johnnygohard Posted May 7, 2014 Share Posted May 7, 2014 I held off using my musical fidelity ams35p during the past hot weather,but now its game on! CLASS A ALL THE WAY! Link to comment Share on other sites More sharing options...
Steam Posted May 7, 2014 Share Posted May 7, 2014 I know that class a amps run hot but didn't know they would heat the whole room up :blink: Does depend on the room size but yes can heat up the room. If I push the FPB to my normal levels I can only just put my hand on it without pulling away because its too hot. And it's a big surface area. It's no different to one of those old style oil filled radiators turned up to full speed. Link to comment Share on other sites More sharing options...
Guest yamaha_man Posted May 7, 2014 Share Posted May 7, 2014 Try running close to 300kg of Krell in a room that's 3.5x4.0. Link to comment Share on other sites More sharing options...
Stereophilus Posted May 7, 2014 Share Posted May 7, 2014 I like to run my amp topless due to the heat generated internally. The fans help, but I prefer them turned right down. Anyone else running their class A's topless? Link to comment Share on other sites More sharing options...
Guest yamaha_man Posted May 7, 2014 Share Posted May 7, 2014 (edited) In summer i took the top off my Krell FPB-600 on the 40+ degree days. Edited May 7, 2014 by yamaha_man Link to comment Share on other sites More sharing options...
Malcolm Posted May 7, 2014 Share Posted May 7, 2014 In summer i took the top off my Krell FPB-600 on the 40+ degree days. Soft :-) 1 Link to comment Share on other sites More sharing options...
Carlton Audio Visual Posted May 8, 2014 Share Posted May 8, 2014 Using a Pair of Audio Research Ref 250's to heat up our backroom this Morning. Worked a Charm! 1 Link to comment Share on other sites More sharing options...
Darryl Posted May 8, 2014 Share Posted May 8, 2014 I recently bought the Weston SET mono blocs that Canton was selling. Apart from sounding great, they work well as room heaters. Come summer I'm going to melt, but hey, no pain, no gain. 1 Link to comment Share on other sites More sharing options...
Stereophilus Posted May 8, 2014 Share Posted May 8, 2014 Using a Pair of Audio Research Ref 250's to heat up our backroom this Morning. Worked a Charm! Drool... I may have to have a look at these someday. I wonder how many trees the owner will have to plant everyday to keep their carbon footprint neutral? Link to comment Share on other sites More sharing options...
RockandorRoll Posted May 8, 2014 Share Posted May 8, 2014 I was going to post a similar thread. My amp is loving the weather My aging bones, not so much Link to comment Share on other sites More sharing options...
sleach Posted July 5, 2014 Share Posted July 5, 2014 Is it my imagination, or do my class A amps need about 30 - 45 minutes to warm up? They seem to be very constrained in the upper mids when I first turn them on, especially in the last couple of weeks of colder weather in Melbourne. And at 10w they are not really warming up the room either! Link to comment Share on other sites More sharing options...
Phantom Posted July 5, 2014 Share Posted July 5, 2014 Is it my imagination, or do my class A amps need about 30 - 45 minutes to warm up? They seem to be very constrained in the upper mids when I first turn them on, especially in the last couple of weeks of colder weather in Melbourne. And at 10w they are not really warming up the room either! Absolutely. My Luxman takes a good 10 mins minimum to really begin to sound great. I usually turn it on well before I intend to do any listening and after about 30 mins it is really ready to boogie Link to comment Share on other sites More sharing options...
Zaphod Beeblebrox Posted July 6, 2014 Share Posted July 6, 2014 Is it my imagination, or do my class A amps need about 30 - 45 minutes to warm up? They seem to be very constrained in the upper mids when I first turn them on, especially in the last couple of weeks of colder weather in Melbourne. And at 10w they are not really warming up the room either! Depends on the amp. In very general terms, amplifiers which don't use much (or any) global NFB will take some time to reach equilibrium. At that point the amp should sound it's best. 2 Link to comment Share on other sites More sharing options...
Art Vandelay Posted July 6, 2014 Share Posted July 6, 2014 (edited) Is it my imagination, or do my class A amps need about 30 - 45 minutes to warm up? They seem to be very constrained in the upper mids when I first turn them on, especially in the last couple of weeks of colder weather in Melbourne. And at 10w they are not really warming up the room either! There was a point made in another thread relating to the esr (effective series resistance) of typical aluminium electrolytic capacitors. Below 20 degrees C, the esr is typically 5 times higher than it is at 60 degrees, so when warmed up, your amplifier's power supply impedance will be considerably lower across the audio range. This may result in an improved subjective performance, ranging anywhere from slight to (possibly) dramatic, depending on the design of the amplifier. Edited July 6, 2014 by Art Vandelay 3 Link to comment Share on other sites More sharing options...
JukKluk2 Posted July 6, 2014 Share Posted July 6, 2014 Is it my imagination, or do my class A amps need about 30 - 45 minutes to warm up? They seem to be very constrained in the upper mids when I first turn them on, especially in the last couple of weeks of colder weather in Melbourne. And at 10w they are not really warming up the room either! I remember years ago a pair of Musical Fidelity class A mono blocs (cannot recall the model) that you could hear improving as they warmed up. The sound started all crystalline, cold and distant and developed into warm and organic and engaging over the course of an hour or so. 2 Link to comment Share on other sites More sharing options...
Johnnygohard Posted July 8, 2014 Share Posted July 8, 2014 I remember years ago a pair of Musical Fidelity class A mono blocs (cannot recall the model) that you could hear improving as they warmed up. The sound started all crystalline, cold and distant and developed into warm and organic and engaging over the course of an hour or so. yes my ams35p makes clicks and pings within the first 30mins and I can hear the soundstage open with every ping/click through the heat sink noise, I was worried at first with a 10k amp doing such, messaged MF and they said this is the norm, AMS35P is the best class A going atm, Yamaha man should give one a run with his TADS! there the best in the world bearded man! Link to comment Share on other sites More sharing options...
Johnnygohard Posted July 8, 2014 Share Posted July 8, 2014 yes my ams35p makes clicks and pings within the first 30mins and I can hear the soundstage open with every ping/click through the heat sink noise, I was worried at first with a 10k amp doing such, messaged MF and they said this is the norm, AMS35P is the best class A going atm, Yamaha man should give one a run with his TADS! there the best in the world bearded man! forgot to mention, the ams35p is a tested pure 36watts@8ohm and 68@4 Link to comment Share on other sites More sharing options...
Onbagz Posted July 8, 2014 Share Posted July 8, 2014 My Rotel power amps love the cold weather. Sent from my iPhone 5. Link to comment Share on other sites More sharing options...
mwhouston Posted July 8, 2014 Share Posted July 8, 2014 My hottest is my 300B SE with TJ Full music carbon plates. With a HT of 435V and 90mA a tube there is plenty of heat. Even 600mm back there is good warmth. Fortunately for summer I have a big powerful refrigerative air con which runs dead silent in my main listening room. 1 Link to comment Share on other sites More sharing options...
drummerboy01 Posted July 13, 2014 Share Posted July 13, 2014 There's nothing like buying an amp at the right time of year. 1 Link to comment Share on other sites More sharing options...
djb Posted July 13, 2014 Share Posted July 13, 2014 (edited) Funky Sardine You just cost me money! Some months ago over dinner we argued over a poorly constructed sentence used by 1 of the family .They said there had to be a name for t We searched Or rather I the pedant searched The librarian scoffed The student rolled his eyes Called in buddyev a pro editor who opted for "shitte English" and told me very rudely to stop wasting his time or he'd bill me for the exercise. A pleonasm it was. Edited July 13, 2014 by djb Link to comment Share on other sites More sharing options...
Telecine Posted July 13, 2014 Share Posted July 13, 2014 (edited) Funky Sardine You just cost me money! Some months ago over dinner we argued over a poorly constructed sentence used by 1 of the family .They said there had to be a name for t We searched Or rather I the pedant searched The librarian scoffed The student rolled his eyes Called in buddyev a pro editor who opted for "shitte English" and told me very rudely to stop wasting his time or he'd bill me for the exercise. A pleonasm it was. I told you that it was a species of a Tautology but you disagreed and ignored me:http://en.m.wikipedia.org/wiki/Pleonasm Edited July 13, 2014 by Telecine Link to comment Share on other sites More sharing options...
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