MP-1 Phantom Power

[rnolan]

Hey Chase42147,
Did you measure that you are getting 9vDC from the adapter?  It's possible that the MXC power regulator (drops the 9v to 5 v internally) is a problem (78M05 see attached).  MJMP advised these can fail.

Using a mixer works well but of course you have to have one.  In my first rack I just put the mixer on top, but that was a pain to set up at gigs. 2nd rack (8 RU) I gaff taped it into the rear rack lid and flipped that on top (so it could stay wired up), the last iteration was to use wide Velcro and fix it to the bottom of the rack.  I also used the Velcro to mount the Quadverb power adapter which fitted next to the mixer at the bottom.  That rack is still like that.  Then I wanted to downsize so my current live rack is 4 RU (MP-2, Midiverb4, B200s) and I run the Midiverb in the MP-2 loop.  It works but I still prefer the mixer approach.  But the 4 RU rack fits in the car boot (trunk) which is convenient.

[Harley Hexxe]

Damned Richard, you had to do all kinds of acrobatics to get that mixer in your rack!

I never had to do any of that. I actually have two mixers, both Beringer, one is the 24Ch one you've seen, the other is a smaller 8ch one that also came with rack ears, so I could mount it in a rack, or just put it on a sliding rack shelf. I never used it for mixing my preamps or rack effects though, that was already handled in their own racks.

@Chase42147: If that center hole in the barrel plug is too big, you won't get a contact, and that means it isn't the right plug with the ADA. You could try to slide a tiny bit of aluminum foil in that hole to see if it will fit on to the positive pole, but I don't recommend that as a permanent fix. Getting the correct plug is always the way to go.

[rnolan]

Hey Harley, mounting the mixer to travel/gig was a journey...  Sitting it on top was a pain and needed to be patched each time.  Then I had the brain wave of mounting in the rear rack lid, that worked ok(ish) but wasn't very secure.  Velcro to the bottom works quite well and makes a little more space than using a rack shelf (anther option I thought of).  I've been on the lookout for a decent 1 or 2RU 8ch line mixer but I haven't found one with enough fx sends (I wanted 3 back then).  There was one that looked ok that had a single stereo fx send, that would work these days given the MP-2 also has a stereo loop.  But then I went simple and started using the MP-2 loop, which is ok but you have to include the loop in each patch. I'm also not a fan of chaining through the Fx unit to the power amp, it works but I like to keep the signal flow analogue all the way through and mix in the digital stuff, but that's just me...

[Harley Hexxe]

Hey Richard,

   I don't know if anyone is still doing this in Oz, but rack mixer cases aren't really all that expensive, and a very good investment if you're moving your mixer around a lot. The one I put my large mixing board in, was one I bought second hand for cheap. You might want to look at something like that. I had to modify the case I bought because the mixer would protrude past the back of the front cover, but that wasn't that hard either. I contacted a local case builder in Canton described what I needed, which was four extended sides for the cover, and they made them for me. I just drilled out the rivets that held it together, and fitted the new sides to it, then drilled and riveted it all back together. Except for the lock latch cut-outs which are now 2" away from the latches, you can't tell it wasn't made that way.

[Chase42147]

Hey Chase42147,
Did you measure that you are getting 9vDC from the adapter?  It's possible that the MXC power regulator (drops the 9v to 5 v internally) is a problem (78M05 see attached).  MJMP advised these can fail.

Using a mixer works well but of course you have to have one.  In my first rack I just put the mixer on top, but that was a pain to set up at gigs. 2nd rack (8 RU) I gaff taped it into the rear rack lid and flipped that on top (so it could stay wired up), the last iteration was to use wide Velcro and fix it to the bottom of the rack.  I also used the Velcro to mount the Quadverb power adapter which fitted next to the mixer at the bottom.  That rack is still like that.  Then I wanted to downsize so my current live rack is 4 RU (MP-2, Midiverb4, B200s) and I run the Midiverb in the MP-2 loop.  It works but I still prefer the mixer approach.  But the 4 RU rack fits in the car boot (trunk) which is convenient.

Nope, I haven't gotten around to it yet, this summer has been way busier than I wanted it to be  Every weekend I tell myself I'm just staying home, playing guitar and doing other guitar related things. And every weekend it doesn't happen. I'm thinking in October things will quiet down and I'll get around to it!

Wow, it took awhile to get it to work perfectly! Setting up rigs to do exactly what you want is always fun, but so much work

[Chase42147]

@Chase42147: If that center hole in the barrel plug is too big, you won't get a contact, and that means it isn't the right plug with the ADA. You could try to slide a tiny bit of aluminum foil in that hole to see if it will fit on to the positive pole, but I don't recommend that as a permanent fix. Getting the correct plug is always the way to go.

Good idea, I'll give that a shot too. At least it would tell me if I need to solder on a new plug or not

[rnolan]

Hey Chase42147, I hear you. LoL I'm surrounded by lots of great gear, but having the time to futz with it can be a challenge. And, as you say, quite a bit of work.

The main thing I found way back when I got a MP-1, was, when do you say stop, that's the tone I want.

Shame you didn't get an adapter with all the different tips, you only need one but they cover all the sizes.

[Harley Hexxe]

Richard,

  If I would ever get an adapter with multiple plugs, it would have to be one with interchangeable tips. I wouldn't want a plug with 4-6 tips protruding out the back of my preamps, that's asking for trouble.

[rnolan]

Hey Harley, absolutely, I mean interchangeable tips, they are the only ones I've come across at the electronics store.  So you end up with a bunch of tips you don't need (I have a collection now from 3 or 4 different adapter purchases. Having all the tips connected at once would be a real pain

[Harley Hexxe]

Richard,

I bought one once that had all the connectors attached to the single output cable. The cable terminated at a gang-plug that had six different barrel plugs on a molded turret, then another short cable came out of that gang-plug and had a 9V battery plug and a 1/8" T/S jack on the end of that. Completely useless

[rnolan]

Hey Harley, that sounds like a nightmare .

[Harley Hexxe]

Hey Harley, that sounds like a nightmare .

That's also the one that buzzed like a hornet's nest. I just don't like them, period.