Hoffman Enclosure
Todays deals on Hoffman Enclosure?
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500 HP Soft Start Allen Bradley Controls in Hoffman Type 12 Enclosure $5,000.00 |
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HOFFMAN A-60H2410SSLP3PT STAINLESS STEEL ELECTRICAL ENCLOSURE NEMA 4X NEW NIB $3,240.00 |
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Hoffman Electrical Enclosure/Panel 72x72x12 $3,000.00 |
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Hoffman Electrical Enclosure/Panel 60x72x12 $3,000.00 |
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Hoffman Disconnect Enclosure A72XM6618FTC Nema 12 *** NEW *** w/ Backplane $3,000.00 |
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HOFFMAN SS ENCLOSURE A-724824SSFSD 28″ X 47″ X 77″ $3,000.00 |
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A-60HS3712SSLP Hoffman 60″ x 37.38″ x 12″ SS Enclosure! $2,999.99 |
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NEW RITTAL E723636FSSS 72 X 36 X 36 STAINLESS STEEL ENCLOSURE box hoffman $2,950.00 |
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Hoffman Electrical Enclosure/Panel 60x60x12 $2,500.00 |
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Hoffman Electrical Enclosure/Panel 36x32x8 $2,500.00 |
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GE AF-300 DRIVE 6VKC4BR075 75HP W/ HOFFMAN ENCLOSURE $2,400.00 |
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Hoffman A74H72JULP Hoffman 74.05 x 72.06 x 24.06 inch Type 4 2 door Enclosure $2,000.00 |
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HOFFMAN ENCLOSURE, NEMA 5 400 AMP $2,000.00 |
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LARGE HOFFMAN ENCLOSURE WITH AIR CONDITIONED COOLING $1,650.00 |
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Hoffman Box A42H3608SSLP Stainless Steel Enclosure 42 H x 36 W x 8 D New in Box $1,550.00 |
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HOFFMAN 2 DOOR ENCLOSURE PANEL BOX FREESTANDING NEW $1,500.00 |
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A48H3612SSLP – HOFFMAN ENCLOSURES A-48H3612SSLP – NEW $1,500.00 |
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NEW C.H hoffman 4 4X STAINLESS STEEL BOX ENCLOSURE CONCEPT CABINET 48x22x7″ $1,440.00 |
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Hoffman Panel Enclosure FREE SHIPPING $1,375.00 |
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Hoffman Enclosure FREE SHIPPING $1,375.00 |
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Hoffman C-CC425320PNK Pendant Mount Enclosure *NEW* $1,300.00 |
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Hoffman Stainless Enclosure A48H3612SSLP NEW – Unused – No Dings or Dents $1,295.00 |
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HOFFMAN A60HS3712LP TYPE 4 DISCONNECT ENCLOSURE, NNB $1,250.12 |
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NEW HOFFMAN TYPE 4 4X STAINLESS STEEL BOX ENCLOSURE CONCEPT CABINET 3FT ** $1,200.00 |
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Hoffman #A-30D2410, Nema 9 enclosure, 30″ x 24″ x 10″, NIB $1,200.00 |
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HOFFMAN LWC382X930X205SS STAINLESS PANEL WINDOW ENCLOSURE 36 X 15 X 8-1/4 NIB $1,200.00 |
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Allen Bradley Lot 1794 flex logic In Hoffman Enclosure $1,100.00 |
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NEW HOFFMAN 4 4X STAINLESS STEEL BOX ENCLOSURE CABINET a24h2412ss6lp 24x24x12 $1,080.00 |
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Hoffman Industrial Control Panel Enclosure A-724818SFD $1,000.00 |
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Hoffman Industrial Control Panel Enclosure A-724818FSD $1,000.00 |
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Hoffman A604820LP: Type 12 Indoor Two door Enclosure with floor stands NEW $1,000.00 |
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Hoffman A606010LP Hoffman 60x60x10 inch Type 12 Indoor Two door Enclosure NEW $1,000.00 |
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Hoffman A-604812ULP, Nema 12 Enclosure $1,000.00 |
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Hoffman Industrial Control Panel Enclosure A-726018FSD $1,000.00 |
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A-36H3012SSLP Hoffman Nema 4X Stainless Steel Enclosure $999.99 |
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36″ L x 30″ W x 13″ D Hoffman Stainless Steel Enclosure $999.99 |
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HOFFMAN STEEL ELECTRICAL ENCLOSURE BOX 6′ X 4′ X 1′ WITH DISCONNECT $999.99 |
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Hoffman Enclosure CSD201610SS + Solenoid Pump Assembly $999.99 |
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HOFFMAN ENCLOSURE A723618FS ENCLOSURE + Extras $999.99 |
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Hoffman Enclosure 48x37x10 A-48SA3810LP $999.95 |
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Hoffman Enclosure w/ 6 Sensotec Amplified Transducers 440/7233-03 440/7229-05 $999.00 |
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Hoffman CS Industrial Panel Enclosure with Indicator $999.00 |
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Hoffman A484812WFLP 48″Hx48″Wx12″D Nema 12 2-Door Enclosure $978.00 |
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HOFFMAN A363016LP ELECTRICAL ENCLOSURE NEMA 12 -NEW $950.00 |
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LARGE HOFFMAN ENCLOSURE $950.00 |
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HOFFMAN A604816LP : Two Door Floor-Mtg Type 12 EncLosure NEW $900.00 |
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Hoffman Two Door Wall-Mount Enclosure Cat# CTD366012 60″ x 36″ $900.00 |
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Hoffman A723618FS Electrical Enclosure (ELE1502) $850.00 |
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#SLS1B16 NEW Hoffman Enclosure Cat# A84XM4018FTC #7964DC $825.00 |
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HOFFMAN ENCLOSURE A727212ULP $800.00 |
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HOFFMAN A24H2408SSLP WALL MOUNT ENCLOSURE 24X24X8 43501 $799.99 |
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Hoffman CS Industrial Panel Enclosure 37″x11″x48″ $799.00 |
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HOFFMAN NEMA TYPE 4 ENCLOSURE A36H30BLP 8″DEEP *NIB* $780.00 |
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Nice Used Hoffman A904820FSD Two-Door Enclosure $775.00 |
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HOFFMAN A484812WFLP Wall-Mount Enclosure Two-Door 48″x48″x12″ Type 12 $750.00 |
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LOT OF 3 HOFFMAN A1212CHNFSS ENCLOSURE 12X12X6 NEMA4X S/S JIC NEW $750.00 |
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Hoffman Electrical Enclosure A-20H16CLP $700.00 |
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HOFFMAN SS NUMATICS VALVE PRESSURE GAUGE ENCLOSURE $700.00 |
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Hoffman Electrical Box 30 x 25×10″ w/Square D 9422TF2 Disconnect Panel Enclosure $699.99 |
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HOFFMAN A-36H3612GQRLP ENCLOSURE JUNCTION BOX 33X33X13″IN WALL MOUNT 4X 43328 $699.15 |
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New Hoffman Electric Enclosure A306010WFLP 2 door NEMA 12 wall mount $695.00 |
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Heavy Duty OUTDOOR ELECTRICAL ENCLOSURE, HOFFMAN $689.00 |
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HOFFMAN UU1008030 U-U1008030 FIBERGLASS ENCLOSURE NEMA 4X $650.00 |
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HOFFMAN A42SA3812LPPL ELECTRICAL ENCLOSURE NEMA 12 -NEW IN BOX $650.00 |
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HOFFMAN F66W48SS Wireway Straight Section Enclosure $615.00 |
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HOFFMAN ENCLOSURE 30SA2608LP $615.00 |
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HOFFMAN CAT# A-48H36FLP CONTROL PANEL ENCLOSURE USED $600.00 |
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Hoffman Wall Mount 4X Enclosure 36 x24 x8 A36H2408SSLP $599.99 |
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HOFFMAN A-30H2008SSLP STAINLESS STEEL ENCLOSURE CONTROL PANEL 30″ X 20″X8″ 44577 $599.99 |
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Hoffman Industrial Panel Enclosure w/ fuses 37″x12″x42 $599.00 |
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New Hoffman Electric Enclosure A723612LP NEMA 12, 13 wall mount $595.00 |
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Hoffman NEMA Enclosure Type 4 6″Deep A16H20ALP $579.00 |
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Hoffman Industrial Control Panel Enclosure 36″x12″x60″ $579.00 |
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Hoffman Enclosure 4, 4X, 12, 13 with Proxim SA-121A2F-11 and Backplate $569.99 |
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HOFFMAN A24H24BLP NEMA TYPE 4 ENCLOSURE 24″X24″X9 3/8″ $557.00 |
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Hoffman Nema Type 4 Enclosure A16H12ALP NIB!!! $549.99 |
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HOFFMAN CUSTOM SERVER RACK ENCLOSURE $549.99 |
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Hoffman SS Industrial Control Panel Enclosure 16″x8″x20 $549.00 |
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Hoffman Industrial Control Panel Enclosure 22″x9″x24″ $549.00 |
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Hoffman Wall Mount Enclosure A363008LP w/ Panel A36P30 $549.00 |
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Hoffman Industrial Control Panel Enclosure 36″x12″60″ $549.00 |
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NIB HOFFMAN ENCLOSURES Grey Steel Wall Mount CSD302410ST $525.00 |
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Pressure Valve Box With Hoffman Enclosure $510.00 |
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Hoffman A-42N3613 Type 1 Electrical Enclosure 42×36″+co $500.00 |
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Hoffman Stainless Steel Enclosure $500.00 |
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HOFFMAN 4X Fiberglass Electrical Enclosure UU756030 NEW $500.00 |
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HOFFMAN A363016LP WALL MOUNT ENCLOSURE $500.00 |
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Hoffman C14-T, Console Top, Enclosure, 24″x 16″x12″ NEW $500.00 |
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New HOFFMAN Enclosure 48x36x8 NEMA 12 / NEMA 4 #A48H36BLP $500.00 |
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Hoffman 36x30x12 Steel Enclosure A36H30DLP $499.99 |
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Hoffman Large Steel Enclosure EWMS362225 Wall Mount NEW $499.99 |
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NIB Hoffman ultrx window enclosure UU504030W $499.99 |
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Hoffman A-423616LP Electrical Enclosure 42″x36″x17″ w/Kooltronic Heat Exchanger $499.99 |
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Hoffman A24HS2108LP Flange Mounted Enclosure $499.98 |
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Hoffman Industrial Control Panel Enclosure 37″x12″x48″ $499.00 |
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Hoffman SS Industrial Control Panel Enclosure 36″10″42″ $499.00 |
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Hoffman Industrial Panel Enclosure 36″x12″x48″ $499.00 |
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Hoffman Enclosure w/ 100 Amp Disconnect (ELE1701) $498.00 |
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Hoffman Outdoor Electrical Enclosure Heat Control Panel $497.99 |
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HOFFMAN UU1008L3L/SPL NEMA 4X FIBERGLASS ENCLOSURE $489.66 |
Hoffman Enclosure Questions
Learn To Play Guitar Online
The review deals with each book separately and recommends purchasing them in a specific order to grow your knowledge in step with your building experience.
Kevin O’Connor of London Power has created a series of books under the main title of “The Ultimate Tone.” These books are truly unique and carefully tailored for the Do-It-Yourself (DIY) guitar tube amp hobbyist and boutique amplifier builder. The books have a home-made ‘feel’ as well… all the illustrations are done by hand and the books are photocopy-printed on 8.5?x11? paper and bound with plastic spines and clear plastic covers. There are six books in the series now with the most recent being released in the late spring of 2008. You may want to buy the entire series all at once and get a modest savings, but I think you should consider buying them one at a time and digest as you go, building projects along the way. A key point though… you don’t necessarily want to buy them in numerical order. I recommend the following sequence:
- The Ultimate Tone Volume 3 – Generations of Tone
- The Ultimate Tone Volume 5 – Tone Capture
- The Ultimate Tone Volume 2 – Systems Approach to Stage Sound Nirvana
- The Ultimate Tone Volume 4 – Advanced Techniques for Modern Guitar Amp Design
- The Ultimate Tone – Modifying and Custom Building Tube Guitar Amps
- The Ultimate Tone Volume 6 – Timeless Tone Built for the Future Today
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The Ultimate Tone Volume 3 – Generations of Tone
This is the most important book in the series for the beginning tube amp builder.
Chapters 2 through 4 lay down the foundation of good DIY tube amp construction, filling you in on good electrical connections, grounding technique, lead dress and other wiring techniques, and mechanical layout including assembly methods like terminal strips, turret and eyelet boards.
The subsequent chapters each pick a particular ‘iconic’ amplifier, each iconic amplifier being a prototypical example of amplifiers of its class, and they are examined in detail as to the circuit topology, peculiar tonal characteristics that result and fatal flaws that the product is notorious for. Kevin provides the original schematics and then shows how you can apply the techniques detailed in the earlier chapters to improve the performance and reliability of the icon without harming the tone. The schematics are redrawn, layouts are provided and mechanical solutions are worked out to make each chapter a complete, self-contained, build-it-yourself amp project.
This process is repeated for several variations of the Champ in chapter 5 (this chapter greatly influenced my own single-ended amp project), then in quick succession: the Bassman, Plexi, 800, Bull Dog, AC-30, Portaflex, SVT, Bass Master, Custom Special, Guitar Mate, Herzog and Laney amplifiers are dealt with.
If you can only buy one book for your DIY guitar amp hobby I’d heartily recommend this one.
The Ultimate Tone Volume 5 – Tone Capture
Volume 5 picks up where Volume 3 left off, with a project-oriented approach and some sophisticated DIY tube amp solutions for guitar and bass.
The book starts off with a chapter overviewing vacuum tube operation called ‘tube tone,’ followed up by a chapter on guitar electronics and pickup characteristics.
The next two chapters are small projects: Sigma for effects switching and Triple-X for amplifier switching.
Chapters 5 & 6 are on transformers… important components but it made me yawn, sorry.
Starting with chapter 7, all the stops are pulled out and you are in project heaven… Major (200W), Soma 84 (EL84 amp), Standard (the London Power Standard Preamp from 1995 coupled to a 50W amp using four power tubes), Doppelsonde (mixing power tube types), AX84 (discussion on the original goal of a very low output power amp), Kelly (50W from 4 6V6s), and several other projects of lesser scope.
One favorite project I did was based on Kevin’s reworking of the HotBox tube preamp pedal from Matchless in chapter 16. I built this pedal in a truly “true point-to-point style” (meaning terminal strips) in a tube pedal enclosure from Doug Hoffman, substituting a Baxandall tone stack and reworking the preamp values to be more Dumble-esqe (non-HRM type).
What would you do to match an amplifier to Yngwie Malmsteen’s style? See chapter 18, ‘Swede.’
The Ultimate Tone Volume 2 – Systems Approach to Stage Sound Nirvana
Volume 2 is not project oriented. The bulk of the book, chapters 2 through 5, deals with power supply tricks and a comprehensive overview of power amplifiers, including tube, solid-state and hybrid power amps. Chapter 3, on tube power amplifiers, has some very practical information on mods and fixes to Marshall and Fender bias circuits.
I like the 1st and last chapters of Volume 2 the best. The first chapter is a short discussion of sound stages and how you might setup your gear on stage for the best audience/band experience. The last, chapter 6, is called “Pillars of Tone” and in this chapter the major contributors tone at the block-level of a guitar tube amplifier system design are discussed one by one and Kevin provides some very valuable insight into tone shaping throughout the preamp/amplifier.
The Ultimate Tone Volume 4 – Advanced Techniques for Modern Guitar Amp Design
This is the book you’ll want to buy if you feel the need to get deeply involved with the power scaling technology that Kevin has developed. Power Scaling, coined and trademarked by Kevin, is the way you can get aspects of power amp distortion (as opposed to preamp distortion) into your tone at bedroom volume levels. Volume 4 is not DIY project oriented but explores the issues, including attenuation, power scaling (both down and up), sag, and power management, tackled by modern guitar tube amp designers.
That said, the second-to-last chapter in Volume 4 might be important for a broader group of enthusiast builders… design philosophy. In this chapter Kevin provides a hierarchical design process that could be used to make key decisions on how you approach your next project.
The Ultimate Tone – Modifying and Custom Building Tube Guitar Amps
There is no volume number in the title of this book, it was the 1st. Personally, I bought it for completeness. I specifically wanted to have the ‘perfect effects loop’ information, although the loop itself is incorporated into a project in Volume 5. TUT also has some excellent material on reverbs and signal switching methods that is not explained in the other volumes. The first half of TUT introduces/overviews tube amp systems, power supplies & grounds then focuses on preamp and power amp modifications to commercial amplifiers (e.g. Marshall / Fender)… if you are totally new to tube electronics you may want to buy this 1st volume at the same time as Volume 3.
The Ultimate Tone Volume 6 – Timeless Tone Built for the Future Today
In many ways, Volume 6 is a continuation and extension of the material in Volume 4, where Power Scaling is introduced. In Volume 6 a new ‘direct control’ version of Powerscaling is featured which was introduced in Vol 4 but flushed out with comprehensive circuits and applied to ‘sag’ and sustain control as well in Vol 6. The new scaling circuits have many advantages for a DIY builder like greater noise immunity and less sensitivity to layout, etc.
I applied the new DC Power Scaling to a Trainwreck clone project and was really impressed with the improvement in ‘playability’ at lower volumes… the unmodified Trainwreck Express circuit is just too loud for domestic use, needing to be cranked to get the sweet tones it is renowned for.
One of the chapters in Volume 6 is dedicated to the Dumble amplifiers… something I was really looking forward to since many of my hobby projects focus on those circuits. I found this short chapter to be a good introduction to the overall architecture of the Dumble amps, written from the point of view of the evolution from the early modified standard amps that Alexander Dumble started out doing, but I felt the chapter fell short in discussing some of the more important subtleties of the later Dumble models.
Volume 6 also has lots of other material in it, including a great tutorial on designing really high output power amplifiers and a great chapter on high gain amplifier designs with real-world circuits referenced and detailed.
In Summary…
Kevin’s books have a very empirical approach. He encourages you to set aside convention in some instances or not be afraid to try combinations of tubes or even pulling tubes and in all cases clearly explains why it is o.k. and points out any reasons why it wouldn’t be o.k. All the examples in the books are very practical and he certainly has the DIYer in mind as he is writing.
Kevin’s body of work is truly encyclopedic in nature, and considering that, one feature sorely lacking from his books is any kind of indexing… this is aggravated by the fact that Kevin constantly refers to previous writings rather than repeat himself in a new volume, and it is very difficult to put your finger on the reference even with the other book in hand. Perhaps search engine technology, like Google’s ability to search protected content, could be put to good use in this case and provide a kind of ‘auto-index’ on the web of all of Kevin’s books without actually giving away the book itself. Or better yet, how about an e-book format of Kevin’s entire collection of TUT books… I think all of the e-book readers include searching capabilities… and Kevin’s hand-drawn schematics would probably scale adequately and be very readable on the e-paper displays these devices feature.
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