can it be some other bit of gear causing it?asked and answered
Warm up time for amps
My amps ( I have many but as an example in this case Bryston 7b3's) seem to take a good 45 minutes to reach best sound. My question is ... how do I warm them up quicker? Is playing them on a revolving loop or shuttle BEFORE my listening starts the only option? If that is the case does playing at low volume achieve the same results, and/or does playing louder speed things up, and if so presumably the louder, the quicker in proportions?
And in that box, is the ambient temperature (eg summer or winter) a factor? To me, it should make no difference with all that stuff going on inside a confined space, but someone will tell me otherwise? I could rig up small fan heaters to blow for ten minutes? If it cuts down warm up time by half for example it may not be such a stupid or strange idea as I think it might be, as it would increase the proportion of "enjoyable" listening time substantially.
I could even be super smart by putting timers on the fans (which in case anyone points out a supply contamination issue ... could be on a different circuit entirely
The amps are rarely switched off.
This issue does frustrate. All that expensive kit not performing at best for a period ....
And in that box, is the ambient temperature (eg summer or winter) a factor? To me, it should make no difference with all that stuff going on inside a confined space, but someone will tell me otherwise? I could rig up small fan heaters to blow for ten minutes? If it cuts down warm up time by half for example it may not be such a stupid or strange idea as I think it might be, as it would increase the proportion of "enjoyable" listening time substantially.
I could even be super smart by putting timers on the fans (which in case anyone points out a supply contamination issue ... could be on a different circuit entirely
The amps are rarely switched off.
This issue does frustrate. All that expensive kit not performing at best for a period ....
Showing 5 responses by ieales
I never listen to my amp. Just my system. Speakers warm up from the power going through them. This changes the XO frequency and driver response. See http://ielogical.com/Audio/WinterBlues.php#TheFly It's never just the amp!! |
Some products have dozens of internal connections for transformers, B+ rails, driver to power transition, etc. Every connection, unless soldered or compression fused, acts as a variable resistor. As these connections change temperature, they change value and alter the level and phase of AC signals. As the connections age, the deltas become more extreme due to corrosion from metal or atmospheric interactions. !!!! WARNING - Only for the technically skilled !!!! Over the years, I have made permanent improvements to electronics by removing all unsoldered internal connections. |
Yes. The only internal connections that remain are tube sockets. Several studios' multi- & 2T track analog recorders had every connection from the console to the card edge connector removed. Multi-tracks had a pair of audio channels with all audio IC sockets removed. All other channels had PoS tinned leaf sockets upgraded to HiRel machined gold plated. When designing electronics, we often start with a hand wired prototype. Getting it into production is often a game of 'beat the demo'. For sceptics whose ears or heads are full of 's$#@', we built 3 versions once the PCB design was finalized.
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