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Old 26th July 2015, 07:49 AM   #1
diyAudio Member
 
Join Date: Mar 2005
Location: Phoenix, Arizona USA
Default J2s with paralleled channels

My pair of J2s have been running perfectly since early-Nov., 2014, with the channels paralleled...
Paralleling channels of a J2.
...driving my 97dB-sensitive Serenity Acoustics Super-7s. This week I dragged my old Audio Physic Avanti IIIs out, connected the MR/treble to the mono'd J2s and the bass ends to a pair of plate amps.
Click the image to open in full size.

First and early conclusion was that the 60-Watts-into-4 J2s had, and still have almost a week later, plenty of power for the 87dB-(in)sensitive Avantis. Because the Avanti x-overs include no HP filters for the MR drivers, I added a high-quality cap to the input jacks of the J2s to create a 190Hz filter, then changed it to a 130HZ and then an about-90Hz filter. As the input caps and the Avantis haven't operated for several years, they're still breaking in, but the system is sounding better and better. My golden-eared buddy, when I told him I was surprised the amps sounded as good as they did driving the power-hungry speakers, told me he thought the J2s were the best-sounding amps I've ever had in my system, and that includes a LOT of often-expensive amps.

I'm really pleased with the sounds of the new system and very happy I bought that pair of J2s.

More later.

Last edited by jeffreybehr; 26th July 2015 at 06:20 PM.
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