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Front Panel Functions 

 

 
1. 

INPUT JACK 

- Input to the amplifier.  Plug in your instrument here. 

2. 

GAIN 

- Adjusts the overall gain of the amplifier.  Start with this control in the 12 o’clock         

position.  The amount of gain set here determines the amount of gain feeding the lead channel. 

3. 

EQ1 / EQ2 

- This switch allows you to choose between 2 completely different equalization 

settings.  E

Q1 

is a lower gain setting, with extended midrange and bass available when used in 

conjunction with the middle and bass controls as well as the deep switch.  This setting is 
suitable for any style requiring a pure clean tone with a nice round bottom and plenty of 
headroom.  

EQ2

 is a higher gain setting.  This setting is suitable for any style requiring a clean 

to slightly distorted tone in clean mode, and more gain in the lead mode. 

4. 

TREBLE

- Adjusts the high frequency response.  In the full counter-clockwise position, high 

frequencies are bypassed.  In the full clockwise position, high frequencies are allowed to pass 
to the input gain stage. 

5. 

BRIGHT 

- Boosts the high frequency response.   

6. 

MIDDLE

 – Adjusts the mid-range response.  In the full counter-clockwise position, the tone will 

be somewhat “scooped” of mid-range response, emphasizing the highs and lows.  In the full 
clockwise position, mid-range frequencies are allowed to pass to the input gain stage. 

7. 

MID 

-

 

Boosts the mid-range frequency response. 

8. 

BASS 

- Adjusts the bass response.  In the full counter-clockwise position, low frequencies are 

cut.  In addition, the response of the treble and mid-range controls is greatly reduced.  In the 
full clockwise position, low frequencies are allowed to pass to the next gain stage. 

9. 

DEEP 

- Boosts the low frequencies.  This is a low frequency contour switch, changing the low 

and low-mid response. 

10. 

LEAD GAIN 

- Adjusts the input gain of the LEAD channel. The GAIN control cascades into this 

control. This level can be set to match the input gain or can be set higher for more overdriven 
levels. 

11. 

LEAD MASTER 

- Adjusts the overall output level of the LEAD channel. 

12. 

LEAD 

- This switch sends the instrument signal through the lead circuit, adding extra stages of 

gain to the signal and enabling the lead gain and lead master controls.  To enable foot switch 
control of this function, switch must be in the down position. 

13. 

BYPASS

 - This switch bypasses the TREBLE, MIDDLE, BASS tone controls.  To enable 

footswitch control of this function, switch must be in the down position.  NOTE: Boost switches 
will still be enabled.  

 
 
 

Summary of Contents for Bloomfield Drive 100

Page 1: ...Two Rock Bloomfield Drive 100 50 40 OWNERS MANUAL ...

Page 2: ...e with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers plugs and the point where they exit from the apparatus 9 Protect the power cord from being walked on or pinched particularly at plugs and the point where they exit from the apparatus 10 Only use attachments accessories specified by the manufacturer 11 Unplug this apparatus during lightnin...

Page 3: ...sition the tone will be somewhat scooped of mid range response emphasizing the highs and lows In the full clockwise position mid range frequencies are allowed to pass to the input gain stage 7 MID Boosts the mid range frequency response 8 BASS Adjusts the bass response In the full counter clockwise position low frequencies are cut In addition the response of the treble and mid range controls is gr...

Page 4: ...o control how much signal is passed to any pedal that is inserted into the effects loop 16 PRESENCE Adjusts the contour of high frequency response The high frequency response will increase as you advance the control clockwise 17 STANDBY Should be in the STANDBY position when you apply power to the unit After a few seconds place the switch in the ON position to use the amplifier You may leave the u...

Page 5: ...tput from 40 to 20 watts with no impedance mismatch 5 SPEAKER OUTPUT There are three sets of speaker output jacks 4 8 16 ohms Be sure to match the impedance of your cabinet with the impedance output of the amplifier We do not recommend connecting more than one cab at a time For multiple cabs a splitter is the best option NEVER OPERATE YOUR AMPLIFIER WITHOUT A PROPER SPEAKER LOAD CONNECTED 6 EFFECT...

Page 6: ...umber and have it handy in case you need service or in the event that your amp is lost stolen or damaged 9 FOOT SWITCH The footswitch connects here with the included stereo TRS cable The LEAD and BYPASS functions can be activated via the footswitch Front panel switches must be in the down position for the foot switch to function FUSE CHART Fuse Chart All Fuses are 3AG Type 250 Volt SLO BLO 100V 12...

Page 7: ...With meter grounded to chassis and probe at test point measure voltage A reading of 0 030 to 0 032 volts is normal for 50 and 100 Watt amplifiers with 2 or 4 6L6 s respectively A reading of 0 020 to 0 022 volts is normal for 40 watt amplifiers If not in this range adjust by turning bias screw SLOWLY a small amount Do not set above these ranges A note about tubes This is an analog tube device Much ...

Page 8: ...ons or comments that you may have We look forward to hearing from you PHONE 1 707 584 TONE 8663 M F 9am 5pm PST FAX 1 707 584 8661 ADDRESS Two Rock Amplifiers 619 Martin Avenue Suite 5 Rohnert Park CA 94928 WEB www two rock com PRECAUTIONS DO NOT expose to rain or any other moisture DO NOT use cleaning solvents Wipe exterior with a clean dry cloth only Refer servicing to a qualified service techni...

Page 9: ...This is a product of Two Rock Amplifiers LLC Two Rock 619 MARTIN AVENUE SUITE 5 ROHNERT PARK CA 94928 707 584 8663 www two rock com SERIAL NUMBER _____________________________ ...

Page 10: ...e following technical regulation Directive Device Low Voltage Equipment 2014 35 EU Electromagnetic Compatibility 2014 130 EU Conformity with the following standards The measurements made in accordance with the procedures according to the European Council Directive and EN Standards Council Directive and EN Standards EN 55103 1 2009 A1 2012 EN 55103 2 2009 EN61000 3 2 2006 A1 2009 A2 2009 EN61000 3 ...

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