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#1
Guitars / Pickup Height
Last post by rnolan - October 09, 2024, 11:56:47 PM
So learnt a new rule of thumb the other day, well new to me LoL.  So my guitar builder advised (while slightly lowering the Bridge PU in my JPLP) that the distance you want between the PU and string is approx 1/3 of the height of the PU coil.  Further you obviously loose output, but closer (as mine was) chokes the strings.  And sure enough, when I got home and tried it, my bridge burst bucker (which I never liked before) sounded much better :woohoo2: .

So I always used to try to get the PU as close to the strings as possible chasing higher output :nono:
#2
Original MP-1 / Re: MP-1 Phantom Power
Last post by Chase42147 - October 08, 2024, 05:19:54 PM
Quote from: rnolan on October 08, 2024, 02:05:24 AMHey Chase42147, having an adapter with more power available doesn't mean the unit will use it and fry necessarily. The one I use for my studio rack (9 V AC link in prev post) is 9V AC 1000 mA (i.e. 1 amp)  Generally it just means there is more power (current) available if the unit needs it.  The unit (MXC) will just use what it needs. What doesn't work is if the adapter has less current (amps) than you need.  So you shouldn't have fried it.  Plugging into the back of the MP-1 just routs the power to two pins on the 7 pin midi cable, it doesn't interact or affect the MP-1, so don't stress that one.

MMm, 5.43 / 2.60 sounds like close to the right tip size (i.e. 5.5 / 2.5). Albeit you'd probably prefer the inner to be slightly smaller rather than larger e.g. my tip measured 5.43 / 2.42.  So the middle prong of the socket should be 2.5, maybe 2.6 is just not quite making contact.  But that's (2.6) not a "common" size (from what I've read).  So maybe more a manufacturing tolerance thing I suspect??.  If you push (gently) on the plug while it's inserted (so it's ever so slightly at an angle), you may be able to get it to make contact :dunno: , just to prove (or not) if it's the pedal that's the problem.  You can also try plugging the adapter into the MP-1 and use the 7 pin midi lead, it may? contact better that way?? worth a try and it wont hurt the MP-1.

Ok good, that's a relief that I didn't wreck it! And that's good to know it wouldn't interact with the preamp itself (using phantom power) I was a little nervous about that. My co-worker pointed out today I could just bend the contact pins in, I didn't think of that. So I bent them further in, I'll try plugging it in again tomorrow!
#3
Original MP-1 / Re: MP-1 Opamp recommendation
Last post by Iperfungus - October 08, 2024, 08:01:04 AM
Quote from: Loktite on October 08, 2024, 07:12:26 AMI appreciate that. Plenty of QVs in my area, just need to save up the funds at the moment. Saves me shipping and changing out the plug. I prefer to hunt local if I can for these kinds of things.

How much are they asking for a QV there?
Makes sense to hunt locally.
#4
Original MP-1 / Re: MP-1 Opamp recommendation
Last post by Loktite - October 08, 2024, 07:12:26 AM
I appreciate that. Plenty of QVs in my area, just need to save up the funds at the moment. Saves me shipping and changing out the plug. I prefer to hunt local if I can for these kinds of things.
#5
Original MP-1 / Re: MP-1 Opamp recommendation
Last post by Iperfungus - October 08, 2024, 05:03:13 AM
Quote from: rnolan on October 08, 2024, 04:08:47 AMHey Max, wow, so I can update my QV :woohoo2: .

Yes, YOU CAN! :cheers:
#6
Original MP-1 / Re: MP-1 Opamp recommendation
Last post by rnolan - October 08, 2024, 04:08:47 AM
Hey Max, wow, so I can update my QV :woohoo2: .
#7
Original MP-1 / Re: MP-1 Opamp recommendation
Last post by Iperfungus - October 08, 2024, 03:34:01 AM
Hi guys!!! Welcome to new comers!  :adabig:
It seems the Depot gained some new smart ones.

About MP-1 mods, I would agree with Richard and add that the MDRT opens MP-1's sound a lot (but not too much) and removes that "bottom end muddiness" you can get setting bass control a litte high.
Firm and tight now.

About the Quadraverb, I had very good experience using a GT with my MP-1 or other preamps, since in the preamp section it has a very useful noise gate and other nice features, like the compressor, bass boost, flat/bright switch (I would not use it as a preamp, of course...).
After that, it has exactly the same features, configurations, overall quality and behaviors of the standard unit.

The Plus version has some added features/effects over the standard unit (tremolo, tap delay...), but not a preamp section and no noise gate....and today people attempts to sell it at unreasonably high prices.

You can read the Plus addendum manual here:

QV PLUS MANUAL

and upgrade a standard QV with one of these EPROMs:

QV PLUS EPROM

But I would go for a GT, that is for sure one of the old-school rack fx units I would recommend with an MP-1 yet today.

I used to have 2 GT units (since I used different preamps), but now I kept just the MP-1 and I'm selling one of those Quadraverbs (I'll keep the other one, where a friend o' mine is doing some refurbishment and modifications).
#8
Original MP-1 / Re: MP-1 Phantom Power
Last post by rnolan - October 08, 2024, 02:05:24 AM
Hey Chase42147, having an adapter with more power available doesn't mean the unit will use it and fry necessarily. The one I use for my studio rack (9 V AC link in prev post) is 9V AC 1000 mA (i.e. 1 amp)  Generally it just means there is more power (current) available if the unit needs it.  The unit (MXC) will just use what it needs. What doesn't work is if the adapter has less current (amps) than you need.  So you shouldn't have fried it.  Plugging into the back of the MP-1 just routs the power to two pins on the 7 pin midi cable, it doesn't interact or affect the MP-1, so don't stress that one.

MMm, 5.43 / 2.60 sounds like close to the right tip size (i.e. 5.5 / 2.5). Albeit you'd probably prefer the inner to be slightly smaller rather than larger e.g. my tip measured 5.43 / 2.42.  So the middle prong of the socket should be 2.5, maybe 2.6 is just not quite making contact.  But that's (2.6) not a "common" size (from what I've read).  So maybe more a manufacturing tolerance thing I suspect??.  If you push (gently) on the plug while it's inserted (so it's ever so slightly at an angle), you may be able to get it to make contact :dunno: , just to prove (or not) if it's the pedal that's the problem.  You can also try plugging the adapter into the MP-1 and use the 7 pin midi lead, it may? contact better that way?? worth a try and it wont hurt the MP-1.
#9
Original MP-1 / Re: MP-1 Opamp recommendation
Last post by rnolan - October 08, 2024, 01:08:00 AM
Hey Loktite, so Max (Iperfungus) likes the QV GT which has an analogue guitar input section as well, but otherwise is the original QV.  Better still he's going to sell one of the 2 he has.  He's in Italy so you'd probably have to change the plug on the power supply (or get a US version). I messaged him about this post so expect him to chime in and be helpful, he always is :trippy:
#10
Original MP-1 / Re: MP-1 Phantom Power
Last post by Chase42147 - October 07, 2024, 06:29:34 PM
OK so I just remembered I had the adaptor in my car, I went and got it and it says 9V 2A... shit. I guess I fried the pedal. I didn't think it mattered, kinda thought it was like an effects pedal where you can plug it into any 9V DC output on a pedal power supply... Well now I know I guess

Edit: I also measured the tip. OD is 5.43mm and ID is 2.60mm. So with any luck, maybe it didn't even contact!