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Conference napalm::guitar

Title:GUITARnotes - Where Every Note has Emotion
Notice:Discussion of the finer stringed instruments
Moderator:KDX200::COOPER
Created:Thu Aug 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3280
Total number of notes:61432

1616.0. "direct vs. miking guitar" by POBOX::KOTSCHARJANA (Fabrique aux Etats-Unis) Sat Dec 30 1989 14:25

    This note's for YOU!
    
    I happened to come across a product at a local music store I'd
    like to discuss.
    The following is a product marketing blurb..
    
    The EDI is a different approach to taking instruments direct into
    a sound reinforcement or studio mixing console.
    This equalized direct system will solve many problems usually
    associated with TONALITY when instruments are fed direct into large
    sound systems.
    Most "direct" box type units are designed to work with the instruments
    signal BEFORE the amplifier or with a line output from the preamp.
    The main problem with this concept is that the tone coloration which
    is generated by the power amp/speaker system is totally bypassed,and
    the direct hookup yields an electronically "dry" tonality.
    
    We have designed the EDI with a different concept as a new approach
    to help the sound engineer/musician cope with these problems.
    The EDI works at the power amp output stage just before the speaker,
    and has been equalized to closely duplicate an average tonal response
    of the most respected guitar-type, loudspeakers currently available
    today.
    Duplicating an average tonality of several speakers seems like quite
    a task from the customers viewpoint,but it actually wasn't all that
    difficult because most guitar type speakers exhibit frequency response
    curves that are very similar.
    
    The EDI takes this similarity into consideration and allows the
    "mix engineer" to more closely duplicate the guitarists tonality
    without drastic equalization at the mixer.In fact, during the test
    period of pre-production with the equalized direct system (EDI),
    we  found the overall sound to be closer to what the audience is
    receiving from an amplifier on stage with the EDI as opposed to
    miking the amp in the conventional manner.
    
    Concerts today are often at such extreme sound pressure levels,that
    amplifiers and all instruments,for that matter, must be miked close
    to eliminate bleed-over problems.
    Close-miking techniques are unfair to the instrument because the
    "near field" response yields high distortion and dosent give the
    true "cross-section" of tonality as a person would receive 30 feet
    from the amp/speaker.
    It is obvious also to most sound engineers/musicians that taking
    intrument amps direct drastically reduces "bleed over" problems,
    because less "live" mics are in use.
    
    The EDI also includes an adjustment for timbre (harmonic balance)
    which helps even further to closely duplicate the tonality produced
    approximately 30 feet in front of the amplifier.This system has
    a 600 ohm transformer balanced output which is designed for long,
    "snake" cable runs and the input and output grounds have been floated.
    
    
    We, at Peavey, sincerely appreciate your decision to try our "new"
    fresh approach to the longstanding problem of taking instruments
    direct and achieving a "natural" sound.
    
    Well what do you think???
    
    Armen k.
    
    
T.RTitleUserPersonal
Name
DateLines
1616.1Check Out The Speaker Emulator NoteAQUA::ROSTEveryone loves those dead presidentsTue Jan 02 1990 07:4513
    See note #1381.
    
    The EDI is a direct box intended to accept speaker levels and has a
    tuned filter in it to simulate the frequency response of a "typical"
    speaker cabinet.  The trim adjustment lets you tweak the filter
    characteristics somewhat.
    
    Peavey may have been the first to market with such a device, but they
    never promoted it too well.  They have also built it into some of their
    guitar amplifiers.
    
    
    						Brian
1616.2in addition:FREEBE::REAUMErock & roll outlaw w/6string gunTue Jan 02 1990 11:416
      Also - check out topic 1516 on the H & K Red Box. It runs around $100
    and really does a good job. Definitly not your standard D.I. box,
    it uses a 9 volt battery, but fortunately doesn't seem to eat them
    up real fast. 

                              		- john r.
1616.3$?CSC32::G_HOUSESoul on IceTue Jan 02 1990 20:143
    How much does the Peavy unit cost?
    
    Greg
1616.4About The Same As Other Passive DI BoxesAQUA::ROSTEveryone loves those dead presidentsWed Jan 03 1990 07:357
    Re: .3
    
    It's about $50-75, I think.
    
    							Brian
    
    
1616.5More InfoPOBOX::KOTSCHARJANAFabrique aux Etats-UnisWed Jan 03 1990 22:5325
    
    Re: .3
    
    It's only $50.00 around here.
    
    BTW I've got the specs,
    
    SPECIFICATIONS:
    
    INPUT SENSITIVITY:
    35 volts RMS
    
    INSERTION LOSS:
    29 db
    
    DRAIN ON SPEAKER SIGNAL:
    Less than 1/2 watt at 30 volts RMS
    
    GROUND SITUATION:
    Input and output grounds isolated
    
    600 ohm transformer balance output 1/4" phone jack speaker/amp 
    connections:
    
    Timbre Adjustment
1616.6No! Not the "P" Word !!WUMBCK::PELLERINThu Jan 04 1990 12:3511
    I liked the idea, although with scepticism, until you ruined it with
    *that* word. The "P" word. Peavey.
    
    I'm pretty hooked on the sound of an EVM12L, as is usual with new
    products such as this, only my ears will know for sure....
    
    BUT I'LL BET DADDY'S IS ALL OUT OF THEM !!!! 
    
    :^)
    
    -BAP
1616.7JAWS::PELKEYLoco Boy Makes goodThu Jan 04 1990 13:4624
<<    I liked the idea, although with scepticism, until you ruined it with
<<    *that* word. The "P" word. Peavey.
<<    
<<    I'm pretty hooked on the sound of an EVM12L, as is usual with new
<<    products such as this, only my ears will know for sure....
  
    Then you probably don't like the sound MADE IN JAPAN either!!
    
    Hmp, while I wouldn' rush out and buy a peavy Guitar, or Guitar amp,
    or Sound Board, much their sound reinforcement products aren't bad at 
    all.  I've had pretty good luck in fact with their Comercial Series 
    power amps (such as the CS800 and CS400)  Black Widow speakers are
    very popular and used quite frequently.
    
    Add to that, we've had remarkable sucess with some Mid and Horn
    cabinets, and I'd have to say that your baised could be unfair if
    you turn the interest of as soon as someone says Peavey.  
    
    Sure, they certainly have made some bombs but what company hasnt'
    
    At least with Peavey, you can afford the stuff, and it's farily easy
    to have their stuff serviced.  (Try getting a Phase Linear amp fixed!)    
    
    I'd check this out, and worry about whos naem is on it later.
1616.8Why *not* Peavey?FSTVAX::GALLOSolid!Fri Jan 05 1990 07:559
    
    
    	Re: The "P" word
    
    		Peavey equipment is solid, well built and affordable
    equipment. I've had very little trouble with by Bass rig and it's
    all PV amplification. I'm curious why you don't like PV gear.
    
    -Tom (Die Hard PV Fan)
1616.9Slow Down, CampersAQUA::ROSTEveryone loves those dead presidentsFri Jan 05 1990 08:455
    
    Re: last few
    
    Can we put the Peavey bashing in another note, please?  Let's keep this
    one to the discussion of the EDI direct box.
1616.10What about for acoustic guitar?COGITO::SULLIVANSinging for our livesTue Mar 19 1991 14:205
    
    What kind of direct box would folks recommend for an acoustic guitar
    with a (Thinline) pickup?  What should I expect to spend for it?
    
    Justine
1616.11ActiveIXION::ROSTBoozoo Chavis lookalikeTue Mar 19 1991 14:3516
    I would buy one that is active (i.e requires a battery or other power
    source) and has an FET front end.  Pickups like a Thinline have a very
    high output impedance and you want the direct box to have as high an
    input impedance as possible for the best signal transfer.  A passive
    box will cost you less money though, and has no battery to replace. 
    Depending on the quality of the rest of the signal chain, it may work
    just as well.
    
    Passive boxes from DOD and Whirlwind start at about $25.  Top-flight
    passive boxes run up to about $75.  The Countryman Model 85 active
    direct box can be bought for about $100.
    
    Oh yeah, make sure it has a ground lift switch on it, some real cheap
    units don't.
    
    							Brian
1616.12Build your own.UPWARD::SANDERSBI install with easeTue Mar 19 1991 15:0315
        Jensen Transformers will sell you all the parts to make a passive
        direct box - resistors and capacitors - $5.00, Transformer -
        <$70.00, you have to supply the box, switches and jacks.
        
        The box can be used directly with the guitar, amp line out or
        speaker out.
        
                Jensen Transformers, Inc.
                10735 Burbank Blvd.
                North Hollywood, CA 91601
                (213) 876-0059 Phone
                (213) 763-4574 FAX
        
        
1616.13GSRC::COOPERMajor MIDI Rack Puke (tm)Tue Mar 19 1991 16:4911
    Justine,
    
    H&K makes direct boxes for about $80.  They work well from what I
    understand.  
    
    You might also consider a Boss GL100 line driver. It's actually a
    preamp, but has speaker emulation circuitry and EXCELLENT EQ sections
    (multiple channels), stereo switchable FX loop etc..  It's a hot unit 
    and are going for as low as $100 !!!!
    
    jc
1616.14add ADA to the listDABEAN::REAUMEMassively Parallel Brain DamageSat Feb 27 1993 07:2222
    
      New to the active ditect box market - ADA! - with their new
    single rack space microCAB speaker emulator. I don't think it's
    designed to take speaker level though, just line outs. What is nice is
    the flexibility. There is a hi-cut control and a "thump" control for
    low end resonance. There are seven speaker types available by push
    button:
    		Open Back Cabinet-
    			1 X 12
    			2 X 12
    			2 X 12 vintage
    		Sealed Back Cabinet-
    			1 X 12
    			2 X 12
    			2 X 12 vintage
    			4 X 12
    			4 X 12 vintage
    
      Haven't heard one yet, but it does look interesting. I think
    Musician's Friend sells it for $179.
    
    							-B{}{}M-
1616.15KDX200::COOPERHello me, it&#039;s me again!Sat Feb 27 1993 11:523
    Hmmm....  I wonder how it would work with the Mp1, which doesn't
    do direct to tape recording very well... ??
    jc
1616.16I wanna hear oneGOES11::G_HOUSEIt&#039;s NOT a TOOMAH!Mon Mar 01 1993 12:394
    I saw that ad on the back cover of the new Guitar Player I got this
    weekend, looks very interesting!!
    
    Greg
1616.17marketing error?KALI::BUSENBARKMon Mar 01 1993 12:555
    re 14,
    
    	What? no 4 10,2 10,1 15 cabs......or is this an upgrade? :^)
    
    
1616.18HEDRON::DAVEBjust &#039;cuz you own the land, there&#039;s no unique hand floods the damTue Mar 02 1993 09:325
compared price wise with the red box it's not competative. Personally I 
can't imagine that it sounds that much better to amke the price difference
worth it. Not to mention how big it is...

dbii red box bigot
1616.19KADAFY::COOPEREx-Squeeze Me ? Baking Soda ?Tue Mar 02 1993 10:172
I thought the speaker box idea was neeto!  Ya know, like they had in
HS&R last month ?? 
1616.20More functionality, different intended marketGOES11::G_HOUSEIt&#039;s NOT a TOOMAH!Tue Mar 02 1993 10:317
    re: dbII
    
    But it's a lot more flexable then a RedBox since that one only emulates
    one cabinet.  Seems feasable that it's worth the extra $100 if it
    sounds good.
    
    Greg
1616.21DABEAN::REAUMEanalog audio/digital controlSun Mar 21 1993 11:5617
    
    
        I completed my first gig with the ADA microCAB feeding the front
    end. No problem with sound quality whatsoever. I used the 4 X 12
    setting and had the hi-cut at mid-point and the thump control at 
    around 2 o'clock. I think this unit is well worth the cost ($175 to me)
    because it is stereo (like two D.I.'s in one, great for recording)
    and has a lot of control. 
        It was nice of ADA to include a ground lift switch on the XLR outs
    because I had to use it to get rid of some hum. And they were smart ot
    include a pass-thru out to feed your power amp just in case you are
    using it in an effects loop or "preamp out/power amp in" configuration.
        If you have to use power amp prior to your D.I. this unit will not
    work, then you pretty much have to consider something like the Red
    Box.
    
    							-B{}{}M-
1616.22GOES11::G_HOUSEThatsWhenIreachedForMyRevolverMon Mar 22 1993 08:334
    Are the stereo channels of the Microcab completely independant? 
    (signal wise)  Are there seperate controls for each channel?
    
    Greg
1616.23DABEAN::REAUMEanalog audio/digital controlMon Mar 22 1993 12:429
    
       Independant channels / No seperate controls! Not that that's a
    bummer. I think the idea here (and a good one at that) is to allow for 
    full stereo seperation when going into a mixer. If your gear has
    stereo outs (hmm - Me, Coop, other MRP's in here) then the microCAB
    gives you that stereo advantage when recording. Nice touch for not
    much money!
    
    							-B{}{}M-
1616.248 tracks won't do it... :-)KDX200::COOPERLet The Light Surround You!!Mon Mar 22 1993 13:544
>Nice touch for not much money!                                     
    
    As long you've already spent the dough on tape tracks...
    :-)
1616.25FREEBE::REAUMElight 2 dark,dark 2 lightSun Mar 28 1993 11:0218
    
    
      The ADA got a good workout Friday evening. I did some minor tweaks
    on some of my patches and used the wireless so I could stand out and
    really hear the sound of my rig through the front end - RIGHTEOUS!
    
      To add to that I got roped into doing about a four minute guitar solo
    because someone in the crowd yelled "guitar solo" and I played just a
    few quick riffs. I stopped after about 12 seconds, the crowd yelled and
    my drummer told me to go for it. It wouldn't work everywhere we play,
    but it seemed appropriate for this gig. I could really hear the front
    end from the stage during the solo, so I must've been cranked at the 
    board and it's all ADA fed. My only regret - I should've ran the ADA
    in stereo because the PA system is stereo on the mids and highs! All it
    would've taken is one more 1/4" patch and one XLR to the snake. That
    would do it! NEXT TIME!
    
    							-B{}{}M-