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It took a bit of trial and error to get everything dialed in for the room size, but once done, it was/is a magic combination for audio-visual enjoyment.
#Audionote uk oto se drivers
To use the A5s in my small room I had to balance the output of the high-frequency Altec 288C drivers to match that of the low-frequency Altec 515B drivers using the aforementioned variable resistor and L-Pad recommended by Yazaki-san and Pete. The Hiraga-san inspired crossovers of my vintage Altec A5s.īy default, audio enthusiasts often assume that the big A5s can't be used in smaller rooms, but that is not the case at all, as the big A5s are superb performers even in my rather small audio-visual room (a spare bedroom in my home). The crossover design I chose to use for my A5s is an adaptation of Jean Hiraga’s superb 16-Ohm crossover design for the Altec A5’s, with a few modifications recommended by friend Yazaki-san (a variable resistor) and Pete Riggle ( Pete Riggle Audio Engineering, an L-Pad) to help blend in the 1005B high-frequency horns I’m using instead of the 3dB less sensitive 1505B horns that Hiraga-san used.
#Audionote uk oto se movie
Given the original intended use of Altec A5s in small to medium movie theaters, my A5s' crossovers needed to be redone to adapt the big beasts to smaller domestic listening environments. For large movie theaters the gigantic Altec A2 or A4 loudspeakers were employed (more HERE). The Altec A5s were intended to provide ample sound for the specific needs of small-to-medium sized movie theaters. The Altec A5 loudspeakers began to appear in the North American movie theaters in 1945. I thought for my longterm report on the Audio Note (UK) Oto Phono SE Signature integrated amplifier, I'd tell you about the Oto's performance in yet another system context, that of my audio-visual system that's based upon my vintage Altec A5 loudspeakers. You can read all about the 'Stokowski' Altecs in Positive Feedback Issue 105 ( HERE).Īudio Note (UK) Oto Phono SE Signature integrated amplifier powering my vintage Altec A5s. I fell deeply in love with this combination. The resulting sound quality and musicality of that pairing resulted in one of those 'desert island' systems levels of performance that one dreams about discovering. The Oto was magic powering my custom 'A7-ish' vintage Altec loudspeakers that were built for conductor Leopold Stokowski way back when (above). Custom vintage Altec loudspeakers built for conductor Leopold Stokowski.