Home › Forums › Help/Technical Questions › MYSTERIOUS MINIMIZING MEMORY BOY DELAY TIME
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November 25, 2009 at 12:48 pm #79384SquigglefunkMember
when I first got my memory boy, it seemed to have almost 650ms delay time, then around 450, then yesterday I checked it and it’s down to about 350 now? I did this by checking against my digital delay with MS readout. Any suggestions or other help?
thanks
November 25, 2009 at 1:37 pm #104209electro-melxModeratorrobo is that you?
November 25, 2009 at 1:45 pm #104210electro-melxModeratoranyway here’s what others have been saying in this thread here:
https://www.ehx.com/forums/viewthread/1561/
I found delay time seems to be dependent on power voltage.
Lower the voltage, longer the delay time and make stretched-tape-echo-like lo-fi sound. It will go far beyond 550ms and, at max, delay sound can stop. Higer the voltage, clearer the sound and shorter the delay time.
According to my measurement, at least 9.5v is needed for “proper” work.
So if you use standard power supply which has around 9v, it won’t work correctly.
I can get 9.78v with included power supply even from 100v outlet in Japan but it’s inconvenient not to be able to use standard 9v power supply.
It’s EH’s fault, I think. At least, “work with 9v power supply” isn’t true.My Memory Boy is completely insane. I literally don’t know what it is going to each time I power it up. Yesterday, with the help of an expression pedal, I could get a maximum delay time of about two seconds. Today, no matter what I did I could only get a maximum of about .7 seconds. On a hunch I unplugged the adaptor and put in a 9 volt battery (a very tight squeeze!). Just now I had a full 4 seconds of (heavily ‘bitcrushed’) delay. I’m not complaining, by the way – I think that this pedal’s unpredictability could be a stroke of genius.[/quote]
I made regulator circuit with LM317 IC by my self and got 9.7v from 18v output of my Gator power supply with no problem, but EH should improve this kind of instability.If it’s OK with your power supply, congratulation, you’re lucky! Keep using it. Some power supply has slightly higher voltage even if it’s labeled as 9V.
My Gator power supply has 9.4v output from “9v out” but I felt it’s not enough because it sounded too lo-fi and max delay time was too long compared to with included power supply.
I guess Memory Boy doesn’t have a function to regulate the power voltage, which other analog delays have. Anyway, it’s very sensitve to power voltage. Someone says delay time varys day by day, or club by club.November 25, 2009 at 1:54 pm #104211SquigglefunkMembersucks, it needs a regulator or something, thanks for the reply
November 25, 2009 at 2:41 pm #104214electro-melxModeratorno worries.
November 29, 2009 at 4:00 am #104406companymanParticipantRobo is now squigglefunk….
December 1, 2009 at 12:09 am #104511dmc777MemberI hope this issue is fixed when the DMB comes out cause I’ve been passing up other delays waiting on it. I bought the regular MB when it first came out and wasn’t really too impressed with it but the added options of the deluxe make me want to check it out.
December 1, 2009 at 2:29 pm #104553Flick (EHX Staff)ModeratorWe are looking into the cause of the problem, there are a couple of things that might cause it.
The DXMB (Deluxe Memory Boy) will definitely not have this problem.
December 1, 2009 at 2:32 pm #104554SquigglefunkMemberQuote:We are looking into the cause of the problem, there are a couple of things that might cause it.The DXMB (Deluxe Memory Boy) will definitely not have this problem.
cool, thanks
December 2, 2009 at 2:15 pm #104665SquigglefunkMemberQuote:We are looking into the cause of the problem, there are a couple of things that might cause it.The DXMB (Deluxe Memory Boy) will definitely not have this problem.
does this mean there might be refunds/repairs offered for the memory boy?
December 4, 2009 at 6:25 pm #104819cavemanbaboonParticipantYes, please. Where could I get my memory boy repaired/ replaced? mine can’t run off a battery, nor the 9V supply I bought for it. There’s nothing said about this problem anywhere other than the forums.
December 11, 2009 at 1:51 pm #105189SquigglefunkMemberBUMP!
December 11, 2009 at 3:29 pm #105195Fender&EHX4everModeratorI live in Florida, and I’ve found my Memory Boy to be sensitive to temperature changes.
The max delay time is longer when the temperature in my house is above about 70 degrees F.
The max delay time decreases when it falls below 60 degrees F.
This is really bizarre, but no more bizarre to me than how temperature affects Germanium transistors. I’m not too concerned about it. It beats having to change the tape loop.
December 11, 2009 at 3:43 pm #105197SquigglefunkMemberQuote:I live in Florida, and I’ve found my Memory Boy to be sensitive to temperature changes.The max delay time is longer when the temperature in my house is above about 70 degrees F.
The max delay time decreases when it falls below 60 degrees F.
This is really bizarre, but no more bizarre to me than how temperature affects Germanium transistors. I’m not too concerned about it. It beats having to change the tape loop.
it’s not temperature changes, more likely fluctuations in your power grid.
They have already stated it is a real problem, not imagined but apparently not offering a fix or anything
December 11, 2009 at 7:02 pm #105211Fender&EHX4everModeratorQuote:Quote:I live in Florida, and I’ve found my Memory Boy to be sensitive to temperature changes.The max delay time is longer when the temperature in my house is above about 70 degrees F.
The max delay time decreases when it falls below 60 degrees F.
This is really bizarre, but no more bizarre to me than how temperature affects Germanium transistors. I’m not too concerned about it. It beats having to change the tape loop.
it’s not temperature changes, more likely fluctuations in your power grid.
I’m not entirely convinced. The occurence has a happened a few times now, which seems too often to be a coincidence.
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