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COMBINATION OF SERIES & PARALLEL

This is really just two sets of Series wired speakers connected in Parallel. This is how you maintain a consistent 

load with multiple speakers. The importance of this is more evident when you have more than one cabinet 

to connect to your amplifier. This is when you need to figure out the loads and how to wire them up without 

applying too low of a resistance on the amplifier. 

Simply connect the Positive side of Speaker A to the Positive side of Speaker C. 

Connect the Negative side of Speaker A to the Positive side of Speaker B.  Next, connect the Negative side of 

Speaker C to the Positive side of Speaker D. 

And lastly, connect the Negative side of Speaker B to the Negative side of Speaker D. 

4 Eight ( 8 ) Ohm speakers wired in Series Parallel = a Total Load of 8 Ohms.

PAGE 25

Содержание California Tweed 6V6 2:TWENTY

Страница 1: ...Owner s Manual ...

Страница 2: ...instrument like no other an original in every way Just like you Our 50 year commitment to excellence along with our solemn promise to musicians to treat each as we ourselves would wish to be treated guarantees you an experience that will make you feel truly justified in your choice We re confident your new amplifier will have you smiling and inspired within minutes of plugging in for the first tim...

Страница 3: ...E 9 MID 9 BASS 10 PRESENCE 11 MASTER 11 REVERB 12 MULTI WATT 13 POWER 13 STANDBY 13 COLD START PROCEDURE 14 REAR PANEL 14 POWER OUTLET AC MAINS SOCKET Removable IEC TYPE 14 FUSE 14 EFFECTS LOOP SERIES 14 REV FTSW REVERB FOOTSWITCH JACK 15 SPEAKER OUTPUTS 16 FACTORY SAMPLE SETTINGS 17 USER SETTINGS 19 DIAGNOSING PRE AMP TUBE PROBLEMS 21 TUBE GUIDE 29 PARTS LIST 30 SERVICE INFORMATION 31 ...

Страница 4: ...onnect the plug shall remain accessible after installation 17 WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 18 WARNING Do not defeat the safety grounding pin on the power cable it is there for your safety 19 WARNING Do not open or perform any internal modifications on this apparatus 20 WARNING Do not attempt to repair the apparatus or replace...

Страница 5: ...o the following two conditions This device may not cause harmful interference This device must accept any interference received including interference that cause undesired operation Suppliers Declaration of Conformity for California Tweed 6V6 2 TWENTY Responsible Party Gibson Brands Inc 209 10th Ave S Ste 205 Nashville TN 37203 United States Telephone 1 615 933 6000 ...

Страница 6: ...ased performance and authentic 6V6 character While the traditional gain preamp on this model is relatively simple and straightforward providing the full compliment of gain master tone controls and presence the power section is progressive in both design and operation and an evolutionary step forward in what many think of as Vintage style amplification The tube compliment in standard form is tried ...

Страница 7: ...response that is superbly expressive In combination all these choices and characteristics add up to a stylistically strong statement that stands ready to redefine as it brings new performance to an old game full of long standing classics We really hope you ll enjoy the enhancements and refinements to this class of amplifier as much as we enjoyed the process of bringing them to you and we hope they...

Страница 8: ...he level slowly once you have lifted STANDBY on the California Tweed and play to view the SEND level coming from the amp NOTE Pedal type processors don t usually have an input level indicator some have clip lights and on either of these types you ll need to trust your ears regarding levels 6 Follow the sample settings examples below and set the controls at these approximate settings for a tour thr...

Страница 9: ...stantial and tangible in your hands when the amp or cab sits on the floor Wood floors like stages are really great Let s face it the guitar can be one of those instruments that rarely feels the same way two days in a row night to night from room to room and we can use all the help we can get This simple practice usually helps with the only exception being a stage filled with many live mics Sometim...

Страница 10: ...at is most important to you headroom or cut and choose inputs with that in mind More cut would actually be found with the NORMAL input as though it may be less pristine in terms of the onset of clip it s inherent punch and more active tone control string response due to the higher signal strength may actually sound cleaner or feel better in an ensemble Experiment with both inputs to learn which on...

Страница 11: ...r clipping as you are nearing the crossover or threshold point gain wise between clean and saturation Some of the most expressive and sweetest sounds are to be found in this zone where things start smearing nicely as they transition more and more toward tube overdrive It is probably fair to say this zone contains what most players using traditional gain amps are seeking a perfect transition betwee...

Страница 12: ...r darker sounding woods like mahogany may require a little higher settings on these three controls or a deviation in ratio between them for the best balance and harmonic content MID The MID control brings in and out a broad band of midrange frequencies and along with these ride a fair amount low treble range frequencies These high frequencies are lower than those residing within the TREBLE s domai...

Страница 13: ...less you are out to hurt people which is never a good idea you may find the middle to lower range of the MID gives you plenty of attack and definition yet still sounds balanced and warm and allows others to enjoy your playing without wincing at every note BASS The BASS control blends in a fairly wide region of rich bottom end to round out the sound Being an amp that needs to have luscious clean so...

Страница 14: ...mostly in the studio for recording where the sound can be isolated and applied in context Even then you may find its most appropriate applications on parts that feature the lower strings This highest region especially when coupled with the inherent curve of many of the microphones typically used in P A sound reinforcement applications can be punishing in the wrong hands so be cautious and courteou...

Страница 15: ...asiest to operate on the entire amp because what you hear is exactly what you get and other than the physical interaction of volume and whatever harmonic resonances that might create it is largely autonomous in nature and shares no duties That said much like the BASS the more extreme the setting of the GAIN control is the more sensibly the REVERB may want to be applied unless it truly is Surf musi...

Страница 16: ...p before Spend time exploring each of the wattage ratings to learn its character and best application you ll quickly understand that whether clean or overdriven the California Tweed is also California Gold when it comes to iconic guitar sounds in the 6V6 realm POWER This switch controls the AC power mains in your amplifier Always make sure the supplied IEC power cable is connected to a grounded ou...

Страница 17: ... of shock while leaving your amplifier open to the possibility of damage FUSE This is the A C s Alternating Current main fuse and provides protection from outside A C fluctuations as well as power tube failure damage Should the FUSE blow replace it with the same rating in a Slo Blo type package The Domestic 117V version requires a 1 25 Amp Slo Blo fuse A power tube short or failure is often the ca...

Страница 18: ... s OUTPUT Set your amplifier to the desired gain tone and master settings and check the processor s input and output levels making sure there is ample headroom on the input and return gain on the output A good way to tell if you have optimal settings and check the quality of your processors and cabling is to remove the cables from the SEND and RETURN jacks on the amplifier Hopefully the signal wil...

Страница 19: ...tion mimics connecting each 8 Ohm speaker to a separate 4 Ohm output Regardless of which way you connect this setup it will provide a better impedance match and ensure the full power and headroom is available A single 4 Ohm cabinet should be used with the 4 Ohm output A 16 Ohm 4x12 cabinet or 2x12 cabinet should be used in the 8 Ohm output and will result in a slight reduction in maximum power tho...

Страница 20: ...ore servicing fuse or chassis AMPLIFIER 44YV PATENTED 7 173 488 GAIN INPUT TREBLE MID BASS PRESENCE MULTI WA TT POWER STANDBY ON ON MASTER LOW NORMAL 1W 10W 20W 120 V 60 Hz 1 25 A 1 25 A SLO BLO FUSE POWER TUBE GUIDE 5 x 12AX7 1 x 12AT7 2 x 6V6 VACUUM TUBE AMPLIFIER HAND WIRED IN PETALUMA CALIFORNIA USA CALIFORNIA TWEED tweed DUO CLASS POWER 6V6 2 TWENTY WARNING Replace fuse with same type rating ...

Страница 21: ...cing fuse or chassis AMPLIFIER 44YV PATENTED 7 173 488 GAIN INPUT TREBLE MID BASS PRESENCE MULTI WA TT POWER STANDBY ON ON MASTER LOW NORMAL 1W 10W 20W 120 V 60 Hz 1 25 A 1 25 A SLO BLO FUSE POWER TUBE GUIDE 5 x 12AX7 1 x 12AT7 2 x 6V6 VACUUM TUBE AMPLIFIER HAND WIRED IN PETALUMA CALIFORNIA USA CALIFORNIA TWEED tweed DUO CLASS POWER 6V6 2 TWENTY WARNING Replace fuse with same type rating only Do n...

Страница 22: ...oisture CAUTION Risk of Electric Shock Do Not Open No user serviceable parts inside SEND FUSE RETURN REV FTSW REVERB USE SHIELDED CABLE 8 OHM 4 OHM 4 OHM SPEAKERS EFFECTS DYNA WATT POWER 6V6 6V6 2 TWENTY WARNING Unplug power before servicing fuse or chassis AMPLIFIER 44YV PATENTED 7 173 488 GAIN INPUT TREBLE MID BASS PRESENCE MULTI WA TT POWER STANDBY ON ON MASTER LOW NORMAL 1W 10W 20W 120 V 60 Hz...

Страница 23: ...oisture CAUTION Risk of Electric Shock Do Not Open No user serviceable parts inside SEND FUSE RETURN REV FTSW REVERB USE SHIELDED CABLE 8 OHM 4 OHM 4 OHM SPEAKERS EFFECTS DYNA WATT POWER 6V6 6V6 2 TWENTY WARNING Unplug power before servicing fuse or chassis AMPLIFIER 44YV PATENTED 7 173 488 GAIN INPUT TREBLE MID BASS PRESENCE MULTI WA TT POWER STANDBY ON ON MASTER LOW NORMAL 1W 10W 20W 120 V 60 Hz...

Страница 24: ...gnosis is more trouble than it s worth and it s faster and easier to merely replace the small pre amp tubes ONE AT A TIME with a replacement known to be good But MAKE SURE you keep returning the tubes to their original socket until you hit the one that cures the problem You ll notice that tubes located nearer to the INPUT jack always sound noisier but this is because they are at the start of the c...

Страница 25: ...es of tube faults shorts and noise Both large and small tubes may fall prey to either of these problems but diagnosis and remedy is usually simple If a fuse blows the problem is most likely a shorted power tube and shorts can either be mild or severe In a mildly shorted tube the electron flow has overcome the control grid and excess current flows to the plate You will usually hear the amp become d...

Страница 26: ...he color designation on the tube label so that we can send you the appropriate match SPEAKER IMPEDANCE MATCHING HOOK UP GUIDE IMPEDANCE Wiring up speakers to provide the most effective load and making sure that all of them are in phase will help in creating the best sound possible This is not too difficult as long as you understand a few things about loading and how to connect your speakers to pro...

Страница 27: ...It is really not suggested to wire different resistive load values in Parallel 8 and 4 16 and 8 etc The formula for figuring the total impedance in Parallel is the multiplication of the two loads divided by the sum of the two loads i e putting two 8 ohm speakers in Parallel results in a 4 ohm load Connect the Positive side of Speaker A to the Positive side of Speaker B Connect the Negative side of...

Страница 28: ... to figure out the loads and how to wire them up without applying too low of a resistance on the amplifier Simply connect the Positive side of Speaker A to the Positive side of Speaker C Connect the Negative side of Speaker A to the Positive side of Speaker B Next connect the Negative side of Speaker C to the Positive side of Speaker D And lastly connect the Negative side of Speaker B to the Negat...

Страница 29: ... 8 OHM 4 OHM 4 OHM SPEAKERS 8 OHM 4 OHM 4 OHM SPEAKERS 8 OHM 4 OHM 4 OHM SPEAKERS WIRING SCHEMES Amplifier to Speaker Cabinets 8 Ohm Cabinet 8 Ohm Cabinet SAFE MISMATCH 16 Ohm Cabinet SAFE MISMATCH 4 Ohm Cabinet 1 2 3 4 PAGE 26 ...

Страница 30: ...WIRING SCHEMES Amplifier to Speaker Cabinets 8 Ohm Cabinet 8 Ohm Cabinet 5 8 OHM 4 OHM 4 OHM SPEAKERS PAGE 27 ...

Страница 31: ...PLAYER NOTES AND REMINDERS PAGE 28 ...

Страница 32: ... TUBES FLIP POWER STANDBY SWITCH TO OFF INPUT JACK TO MAINTAIN WARRANTY USE MESA BOOGIE TUBES WHEN REPLACEMENT IS NECESSARY FOR CUSTOMER SUPPORT PLEASE CALL 707 778 6565 MONDAY THURSDAY 9 5 PST OR EMAIL US AT INFO MESABOOGIE COM 5 x 12AX7 1 x 12AT7 2 X 6V6 V4A B REVERB SEND STAGE V5A B DRIVER PHASE INVERTER V6A REVERB RETURN V6B REVERB MIXER POWER TUBES 20W V7 V8 PENTODE 10W V7 V8 TRIODE 1W V7 PEN...

Страница 33: ...REBLE MID BASS PRESENCE MULTI WA TT POWER STANDBY ON ON MASTER LOW NORMAL 1W 10W 20W 120 V 60 Hz 1 25 A 1 25 A SLO BLO FUSE POWER TUBE GUIDE 5 x 12AX7 1 x 12AT7 2 x 6V6 VACUUM TUBE AMPLIFIER HAND WIRED IN PETALUMA CALIFORNIA USA CALIFORNIA TWEED tweed DUO CLASS POWER 6V6 2 TWENTY WARNING Replace fuse with same type rating only Do not expose to rain or moisture CAUTION Risk of Electric Shock Do Not...

Страница 34: ...Specialist is not available when you call helping other customers PLEASE leave a voice message with a phone number and a good time to call and WE LL CALL YOU BACK INTERNATIONAL Customer Support For warranty and technical support please contact your LOCAL MESA DISTRIBUTOR You may use this link to search the web for your local distributor s contact information www mesaboogie com support PAGE 31 ...

Страница 35: ...Thank you for trusting MESA Boogie to be your amplifier company and we wish you many years of toneful enjoyment from this handcrafted instrument ...

Страница 36: ...22 03 29 1317 Ross Street Petaluma CA 94954 USA 707 778 6565 www mesaboogie com ...

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