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Alesis 3630 power supply question...


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I picked up an Alesis 3630 off of craigslist a few days ago without a power supply. I bought the unit for $20, and I don't plan on spending another $20 for one from Alesis. There's a used electronics store down the street that sells wall warts organized by volts and milliamps, but I don't know how many milliamps the Alesis wall wart provides. Can anyone help?

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the drummer in my band had his power supply burn out on his D4. i was able to find a 3630 for free and gave him the power supply (the same supply) and tossed the 3630 without even bothering to turn it on. this is how much the 3630 is worth, nothing. the power supply is far more valuable than the 3630 as it can be used for other things actually worth powering, probably the reason yours didnt come with the power supply.

 

sorry to be harsh but you should have asked before throwing your $20 away.

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Thanks RoadRanger - the stock numbers are what I've been looking for. I should have searched their Alesis' more closely. As far as the 3630's reputation, I've read about it and was expecting the comments (and will maybe end up agreeing with them) but I think all of us can name gear that gets an undeserved bad rap or undeserved praise and I'd rather hear it for myself than blindly go by internet hearsay. Also, most of the reviews I've read on HC had to do with using the 3630 for recording; this is just going into a basic PA that needs a compressor, so for $20 why not give it a shot?

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Go rummage @ a Goodwill, etc. I have found 10/9vac powersupplies. For $20 cool although the 3630 might possibly be the worst comp ever made.

 

 

yep. it sounds best pulled from the system. i love ratty, old, obsolete, weird gear and can find a use for almost anything, but the 3630 is so bad sounding it is unusable.

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Thanks RoadRanger - the stock numbers are what I've been looking for. I should have searched their Alesis' more closely. As far as the 3630's reputation, I've read about it and was expecting the comments (and will maybe end up agreeing with them) but I think all of us can name gear that gets an undeserved bad rap or undeserved praise and I'd rather hear it for myself than blindly go by internet hearsay. Also, most of the reviews I've read on HC had to do with using the 3630 for recording; this is just going into a basic PA that needs a compressor, so for $20 why not give it a shot?

 

 

So it's going to be used on the main mix?

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Yes, on the main mix. I'd actually like some advice on this, as this setup is my first move out of mixer plugged straight into power amp territory. My main goal with using a compressor is to smooth out vocals and make up for bad mic technique - no squashing. Also, this PA is mainly going to be used for DIY shows in art galleries, basements, smaller venues, etc. so 90% of the time I'm just going to be running vocals, except for the odd acoustic instrument and keyboard. So looking at it as a purely vocal PA, does it make sense to compress the main mix? My plan is to use it on the main mix when I'm only doing vocals and when I run instruments to only use it on the vocal channels (like the previous poster, I'm not a big fan of compressing the hell out of everything). Any advice would be greatly appreciated.

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Used it as an insert of a specific channel only. And sparingly too, the most you'll want to squash is about 3-6dB at whatever ratio. You may not find it useful at all though, many agree the 3630 sounds best in bypass mode.

 

I had 3 or 4 of them in the late 90's, I didn't hate them as much as most did. I ended up buying the behringer 4ch comps since they were cheap and easy to use. I still have a few but mostly use DBX or prefer to use an 01V with all of it built into the board. The last behring 4ch comp I bought was like 50 bucks or something.

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Heh, yeah. If it sounds better bypassed I have no qualms about using it to keep a trailer from rolling down a hill/smashing it against a brick wall/flipping it on craigslist. I was mainly planning on using it lightly (in the 3 - 6 db range) - nothing major, just compensating for singers without good technique and maybe smoothing things out a hair. So is that a no to doing the main mix when the main mix is just vocals? Also, When I do get the chance to upgrade, dbx is definitely a brand I'm going to look into; I'm just giving the 3630 a chance for the present.

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Heh, yeah. If it sounds better bypassed I have no qualms about
using it to keep a trailer from rolling down a hill
/smashing it against a brick wall/flipping it on craigslist. I was mainly planning on using it lightly (in the 3 - 6 db range) - nothing major, just compensating for singers without good technique and maybe smoothing things out a hair. So is that a no to doing the main mix when the main mix is just vocals? Also, When I do get the chance to upgrade, dbx is definitely a brand I'm going to look into; I'm just giving the 3630 a chance for the present.

 

 

not heavy enough. its basically useless, it wont even keep a door open.

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If the goal is vocal smoothing, use it inserted in the two worst-offender vocal channels.

 

The way a compressor works: it "hears" the entire signal and any part of the signal that exceeds the threshold will engage it...of course on the entire mix if that's where it's located. So if the bassist (or the vocal mic that's facing the bass amp...they "hear" everything too) is loud and crosses the threshold, then it will compress based on the bass signal...squashing everything else. If something rhythmic is engaging the comp, like the kick or snare, then the compressor cuts in and out in what's commonly described as "pumping" or "breathing". Not good.

 

Just put the comp on the vocal channels, and adjust the threshold so that only the loudest part has any effect. Be aware of stage volume that could engage it...it'll act like a ducker if the snare is engaging it...and apply maybe 3dB.

 

Note that if you use makeup gain to compensate for the amount of compression, you're increasing the average power of any signal that's compressed, and this will increase the chance of feedback.

 

Also keep in mind that you really don't want compression in the monitors. It'll cause feedbacks problems as mentioned, and it'll virtually guarantee your singer will blow out his voice since he won't hear how loud he really is.

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I'm looking into a compressor/gate for drum, percussion and to even out the vocals just a touch. I really don't want to squash anything at all but if I have to what's recommended and how can I avoid compression and gating?

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