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Planning on changing amps from PP KT120 to SET 2A3


DjOverdose

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just want to uodate this thread... got my 2a3 amp already and boy it does not disappoint! now i know what it sounds like when they say youll be surprised what a few watts can do. its still in the break in period but it sound good already. though the bloom is still not there but the voice... the voice.... its like they are just right in front of you. comparing it with my kt120 amp, the kt120 feels like its too excited to show off but your trying to hold it down. the highs sometimes goes too high but the lows and the thump are really there. while the 2a3 is like the guy in your neighborhood who takes his time walking like his not in a hurry and appreciates everything he see's around him. everything seems to he balanced listening to the 2a3. its so quite that theres very little to no hum at all. the details and nuances are more pronounced in tye 2a3 amp. 

 

probably it is because of the sensitivty of the speakers as well. its easy to be driven thats why when im using the kt120, the hum is more evident compared to the 2a3. also the kt120 is much louder its like even playing at the same volume level, the kt120 feels like its shouting while the 2a3 is just telling you a good story. 

 

Its not a night a day difference but the 2a3 is just dead silent and clean. what more if its totally broken in.  maybe if i pair the kt120 with a speaker that has an 85db or 87db probably it will sound much better since itll be flexing its muscles to move those woofers in and out... 

 

I will be replacing the 6n3c with kt66 and the 5u4gb with 274b and hope they will sound nicer. 

 

thanks guys for all the replies.... 

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On 7/10/2019 at 6:08 AM, Jeffrey D. Medwin said:

 

 

Question :  Does the system gain an additional 3 dB , when a second speaker ( for stereo ) is added??  

 

 

 

Yes, but ...

 

If the same signal is sent to two identical speakers, through each of the channels of a 2 channel stereo system, the SPL should be 3 dB higher than with just one speaker connected, unless there is significant phase cancellation, or the positions of the speakers are dissimilar. 

 

It's good not to depend on this.  Lets say one desires a 110 db peak from simultaneously struck bass drum, timpani, tom-tom and tam-tam, and that a single channel of the sound system is reliably 1 dB below clipping with one speaker connected.  If the recording was made with those percussion instruments dead center, at the rear of the orchestra (a frequent arrangement), adding an identical second channel should increase the SPL by about 3 dB, providing additional headroom, since the burden of reproducing them would be divided equally between the channels.  But if all those percussion instruments were all the way over to one side (as they were in an orchestra I once played in), the second channel would not be doing full duty, so the SPL would not gain a full 3 dB.

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