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HERETIC OWNER’S MANUAL 

PAGE 8 OF 16 

more than we may ever need.  The high end of the gain structure on this amp is capable of 
potentially surpassing the tube’s ability to keep up.  This can result in feedback and squeals.  
It  will  also  push  the  tubes  beyond  where  they  optimally  perform.    On  your  crunch  channel, 
start with your gain at 5 and work from there.  On your clean, start with your gain at around 2 
and work up. 
 

Bass.

  This is the most incorrectly used control on an amp.  Do we all want fat low end?  You 

bet.  Do we get that by diming the bass control?  Not on this amp. 
 
The simple truth of a good tube amp is that the amp will do its job and produce low end.  The 
higher the volume, the more low end the amp will produce.  So when the amp is producing 
your nice low tones, introducing extra low frequencies from the bass knob has a tendency to 
“muddy” the tone or make the amp sound “looser.”  Lesson here?  Watch where you set your 
bass knob. If you’re putting any real volume through the amp (at low volume, you may want 
to add a little bass back in to try to mimic the tones you’ve dialed in on higher settings), keep 
your bass a little lower. 
 

Middle.

  The mid-range of an amp is by far the most critical tone range.  Remember, guitar is 

a predominately mid-range instrument.  Suck out the mids and try hearing yourself in the mix. 
 
DA spent truckloads of time on the mid-range.  As a result, one thing is for sure.  It will take a 
concerted effort on your part to dial yourself out of the mix.  That being said, your mid-range 
control will wildly change your tone.  After you’ve set your other controls, work on this one.  
Set your mids at 5 and see what you think.  Then, to hear the variance, sweep the mid-range 
from 3 or 4 on the low range to 9 or 10 on the high. 
 
NOTE TO US METAL GUYS:  Don’t be afraid of your mids.  All the crunch in the world is fine, 
so long as the audience can hear us.  Take out too many mids and you’ll get lost in the mix.  
Keep your mids lower for that great metal “edge”, but lower on this amp is still north of 3.  Try 
the  settings  between  3  and  5.      Of  course,  if  your  metal  sound  of  choice  bears  more 
resemblance to the metal tones of the 80’s (yes, I grew up on these!), you’ll be happiest with 
mid settings well north of 5 (say 6-8 or even higher in some cases). 
 

Treble/Presence.

  The interplay between treble and presence is always unique.  Depending 

on  how  your  old  amp  was  designed,  sometimes  they  work  backwards,  sometimes  one 
doesn’t  work,  sometimes  they  work  like  you’d  expect.    So,  forget  what  amp(s)  you’ve  used 
before.  Here is how they work on this amp. 
 
Your treble knob really will decrease and increase high end frequencies.  So, start with this 
knob around 5.  As you roll it up, you’ll think the amp is getting harsher.  It is.  Increase treble, 
increase harshness.  DO NOT use your Treble knob for “brightness.”  That is the function of 
the Presence knob. 
 
Presence on this amp could be labeled “brightness.”  Due to what the Presence control is and 
where it is in the circuit, you may not see much of a difference in your Presence control from 
0-4 on the dial.  When the presence knob is dialed up north of around 4, you’ll really start to 
hear the change.  If you want your tone more aggressive, roll the presence up.  If you want to 
smooth it out a bit, bring it down.  Pretty simple, huh? 

Summary of Contents for Heretic

Page 1: ...OWNER S MANUAL ...

Page 2: ...nd will give you years of enjoyment if it is well maintained Before you begin remember learn your amp and you ll be in the best position to achieve the tones and performance you want So please take the time to read this manual Afterwards enjoy the finest in tone and American craftsmanship Diamond Amplification Jeff Diamant President CEO ...

Page 3: ...ANUAL FEATURES 1 FRONT PANEL 2 REAR PANEL 2 MAKING CONNECTIONS 2 BEFORE YOU BEGIN 4 QUICK START GUIDE 4 POWER STANDBY 5 DIALING IN 5 EFFECTS LOOP 5 TONE VOLUME CONTROLS 7 CHANNEL 1 9 CHANNEL 2 10 DEEP CONTROL 11 ...

Page 4: ...SWITCHING 11 FRONT PANEL SWITCHING 11 HERETIC CONTROLLER 11 ALTERNATE SWITCHING METHODS 12 TUBES 13 TUBE LAYOUT 13 CHANGING REPLACING TUBES 13 DIAGNOSING TUBE PROBLEMS 14 ...

Page 5: ...el 2 switchable allows for two gain settings with 2 volumes for level adjustment to match volumes 2 switch foot controller for access to all three volume gain controls Channel 1 Channel 2A Channel 2B connected with a TRS cable Footswitch connects through TRS stereo 1 4 jacks allowing for switching through a variety of other devices Rear panel dialable Deep control 110v 120v 220v and 230 240v power...

Page 6: ...d technician Speakers Your DA product comes equipped with two speaker jacks Always ensure when connecting speakers that you use a high quality speaker cable Never use instrument cable to connect your amp to speakers and never put effects between your amp and speakers If you are using one speaker cabinet you can plug into either speaker jack Make sure your impedance selector is set to the same impe...

Page 7: ...nds Effects loop Your effects loop is a series loop with a shorting jack in the Return position What does this mean to you When you plug a cable into the effects return it goes active When you unplug the cable in the Return position the loop return goes inactive If you are using for whatever reason your amp just for its power stage no problem When you plug into the loop return you re set When you ...

Page 8: ...echnician Following these guidelines will extend the life of your amp Enjoy QUICK START GUIDE So you re an experienced user you ve made your connections and you re ready to go Here s a few settings to get you started and dial you in some quick tones to get rockin NOTE Unlike most amps dialing any control to or near 10 is not recommended Like most good amps you won t need or want to vary too far fr...

Page 9: ...rned on the jewel light will illuminate to indicate power is on and when you have made all the appropriate connections take the amp off standby Allow the amp to warm up for several minutes before playing for optimal result You should always return the amp to standby before turning off to allow the amp to discharge voltage Doing this habitually will extend the life of your amp DIALING IN EFFECTS LO...

Page 10: ...verall volume Let s do a test 1 Set your amp on Channel 2A 2 Set the Gain at 6 and the Volume at 4 It should be pretty loud 3 Now make sure the E Return control is set to 0 and plug a short patch cable into the loop provided jumping the Send to the Return When you play now you should hear nothing 4 Gently bring the E Return knob up When you get to about 2 or 3 you should be at a normal listenable ...

Page 11: ... Well often those go karts came with some sort of governing device You can put the proverbial pedal to the metal but the kart will only go so fast So dime your gain But when it s not fast enough open up that governor by introducing some volume As you bring up the volume and heat up the channel mashing that gas pedal starts to really get that machine moving When deciding how to run your volume gain...

Page 12: ...nge your tone After you ve set your other controls work on this one Set your mids at 5 and see what you think Then to hear the variance sweep the mid range from 3 or 4 on the low range to 9 or 10 on the high NOTE TO US METAL GUYS Don t be afraid of your mids All the crunch in the world is fine so long as the audience can hear us Take out too many mids and you ll get lost in the mix Keep your mids ...

Page 13: ...t leaving the volume in place Now pick any spot on the gain setting above at least 3 and varying the volume controls For a punchier rounder blues tone you ll find lower gain settings with high volume to be great For more break up bring the volume not quite as high but drive the gain more For classic rock tones try the gain knob anywhere from 6 8 and vary the volume control same principle high volu...

Page 14: ...trols will tone alter the amp more than any others on this channel NOTE In both examples none of the controls vary far from 5 You should dial similarly when you work the amps to get your sound OK so what about that Volume Gain B Are the different from Volume Gain A No Switching between them is like turning the knob So for example set Volume A and Volume B at 5 Set Gain A at 7 Set Gain B at 3 Now t...

Page 15: ...p to switch back It is recommended that if you want to switch back from Channel 2B to Channel 1 that you set both Switch 1 and Switch 2 to off HERETIC CONTROLLER FOOTSWITCH The supplied footswitch is as rugged as the amp Featuring the highest grade of switches and a 14 gauge steel chassis you ll be hard pressed to kill this piece The footswitch is connected through the use of a TRS cable Any stand...

Page 16: ...To get the most of your amp if you re a MIDI kinda player we recommend our MAC 2 which will allow you to use this jack and switch your amp with any standard MIDI controller MIDI In Thru also allows you to control your MIDI effects and your amp at the same time from one controller The MAC 2 s 4th jack is a TRS jack for this purpose If your switching device whatever it is does not utilize TRS switch...

Page 17: ...ged every 6 months to a year If you don t play frequently they can last longer NOTE While power tubes can simply and suddenly fail they generally degrade over time So while your tubes may be working they will not sound the same as they get older People often go years with the same power tubes and never replace them claiming Well they still work fine You can be assured that the amp however does not...

Page 18: ...ppens again replace your power tubes If the tube glows cherry red shut the amp off immediately As power tubes are wired in pairs a failure of this nature in one tube can cause the other tube in the pair to fail with it If you encounter this problem as noted shut the amp down immediately Wait a few minutes and fire it back up If it happens again replace the tubes before using the amp again If not y...

Page 19: ...st is NOT outcome determinative If the problem is only on one channel or the other you ll know which tube is the problem If it s only on the clean channel it s tube V2 If it s on the crunch channel it is either V3 or V4 but most likely V3 NOTE V1 usually is the culprit Even if you don t hear it on both channels you should check V1 anyway Tube problems are much more dramatic on V1 than any other po...

Page 20: ...DIAMOND AMPLIFICATION INC 5261 LANGFIELD RD HOUSTON TEXAS 77040 713 934 0100 TEL 713 934 0155 FAX www diamondamplification com ...

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