Paralleling channels of a J2.

[jeffreybehr]

I've asked NP if the 2 channels of a J2 can be paralleled. Yes, he wrote, and the power maximums become 30 Watts into 8 and 60 Watts into 4. I'm currently running two J2s using only one channel of each.



As is, the sonic quality is excellent--MAYBE the best I've ever heard from my system--and with 97dB-sensitive speakers I don't need more power...

BUT...what happens to the sonic quality (while staying well within power limitations) with channels paralleled? Is it likely to increase, decrease, or stay the same?

This inquiring mind wants to know. 😕

 

[Zen Mod]

your ears , your test

why not trying it ?

 

[analog_sa]

IME paralleling does not lead to better sound. Curious about your verdict.

 

[BigE]

Do you have the gear or are you looking for permission to buy it?

 

[jeffreybehr]

Do you have the gear or are you looking for permission to buy it?

By 'The gear' do you mean the amplifiers? My first post contained 'I'm currently running two J2s using only one channel of each.'

 

[BigE]

Well NP says you can do it.

 

[rayma]

By 'The gear' do you mean the amplifiers? My first post contained 'I'm currently running two J2s using only one channel of each.'

I'll bet you will prefer the single channel to the paralleled channels, even with twice the power.

 

[jeffreybehr]

I'll bet you will prefer the single channel to the paralleled channels, even with twice the power.

You may be correct. That's why I'll do it initially sort-of-temporarily.

 

[buzzforb]

Use a transformer with a buffer in for to parallel the two channels. See what you think. MYbe add a little feedback.

 

[dsdjoy]

You may be correct. That's why I'll do it initially sort-of-temporarily.

I was thinking to try following with my setup, might be an option for you too:
If your speakers allow you to do it, you could power the bass drivers with one J2 and the mid/tweeters with the second J2.
To allow for adjustment of volume differences between bass and mid/tweeter path you could have a B1-buffer before one of the J2's.

 

[jeffreybehr]

Use a transformer with a buffer in for to parallel the two channels. See what you think. MYbe add a little feedback.

As the semiliterate dideeboppers say, not hardly. 🙄

 

[jeffreybehr]

Done!

Using cheap jumpercables to parallel input and outputs of one amp, my golden-eared friend thought the amp sounded a little better paralleled than when using just one channel, and I could hear no worsening of SQ when I was on the couch, so I paralleled the 2 channels of both amps.

Used 18g. solid Neotec UPOCC copper in Teflon wire, bent to avoid AC wiring.


Note the new set of Cardas CCGR bindingposts and the Furutech '10(R)-series AC inlet. Also the missing XLR inputs (and their jumpers and associated wiring) and the super-hi-end ...ahem... jumpercable winding thru the XLR holes and that join the RCA-jack inputs. Will be replacing one RCA with a Furutech FP-901(R) and wiring the inputs together with, probably, Neotec 23g. silver inside the chassis.

I don't know that it was due to the improved SQ after the several upgrades, but I experienced an evening of musical* goosebumps few days ago. These happen to me only a few times per year, so something good must be going on.

😀 😛 😀 😛 😀

* Saint-Saens Sym. 3 'Organ', Nezet-Seguin conducting the Greater Montreal SO, Atma multichannel SACD #SACD2 2331. This is my favorite performance and recording of this hum-dinger.

Amazon.com: Saint-Saens, Vierne, Widor, Guilmant, Philippe Belanger, Yannick Nezet-Seguin, Orchestre Metropolitan du Grand Montreal: Saint-Saens: Symphony No. 3: Music

and

http://www.sa-cd.net/showtitle/3740\

 

[jeffreybehr]

I was thinking to try following with my setup, might be an option for you too:
If your speakers allow you to do it, you could power the bass drivers with one J2 and the mid/tweeters with the second J2.
To allow for adjustment of volume differences between bass and mid/tweeter path you could have a B1-buffer before one of the J2's.

The speakers are biamped, but the bass system is a servo-type and is eq'd to get enough output from the open-baffle drivers, so no can do.