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previous: dale someone here told me i would find ... -- 4/24/2000 3:30 PM

Re: marshall jubilee-out of phase ?

4/24/2000 3:50 PM

Trace

Re: marshall jubilee-out of phase ? quote: "someone here told me i would find that my Marshall silver jubilee is out of phase with most other amps. Is this true, and how can i tell/rectify this problem?"     Who ever told you that was correct! That amp is out of phase with nearly every other amp out there but it's not a big deal if you are not running it with another amp at the same time.     You can take your speaker cable and simply flip (or reverse) the positive and negative (ground) leads on one end only. This will flip the phase.     Now with that being said we are using one of those amps in the studio now and even after flipping the phase it still sounds wacky in the phase department. I think it's the actual design to be perfectly honest with you. It sounds better with the phase reversed but it's still a bit wacky.     quote: "i run it in stereo with a pv classic 30 as the effects amp, and while i havn't noticed it sounding like it's fully out of phase, it does seem to have a certain quality when i gig with it that could possibly be described as sort of out of phase. you might say it sounds like it's 20% out of phase."     The entire amp will not be completely out of phase with another. Usually you notice it on the lower mids and low-end more than anything. The low-end starts to shrink up or disappear. Flip the phase with the speaker cable and you'll hear the difference in the low-end and the lower mids.       quote: "i noticed this, but wrote it off as just the way the amp sounds. i know what out of phase speakers sound like, and o.o.p. p/u's, but this doesn't have that thin sound, just a certain small aspect of the out of phase sound."     It's not a drastic as speakers being out of phase with each other. Speakers will sound far worse when they are out of phase with each other.     quote: "tho i have only run it stereo, so maybe if i ran it w/o the 2nd amp i may hear an even better sound."     If you run both amps in mono and send the same signal to them you should the phase cancellation even more.     quote: "but thats not an option as i love running stereo by the way, the speakers are in phase, as i checked then with a battery. any thoughts on how to tell and rectify this?"     Dale, I'd be willing to bet that the Marshall is out of phase with the Peavey. Simply reverse the speaker wire as described above and you should be fine after that.     Trace         quote: "ps--as i said, i don't know this amp is out of phase w/ others. just want to be sure after reading the post that mentioned it. [can't seem to find that post by the way]"     I think I was the only one who made mention of it recently

 

Replies:

dale thanks trace,i'll t... -- 4/24/2000 4:12 PM dale trace,i just did a ... -- 4/24/2000 5:19 PM dale oh, i forgot to mention that the am... -- 4/24/2000 5:24 PM RMS Trace,q{Who ever to... -- 4/25/2000 2:10 PM