Sherwood's Music - reliable repair, consignment, accessories

Selling vintage amps, instruments, pedals, repair and pro audio to Asheville. And the internet.

Check out 'merchandise' for the current stock and call 828.254.0402 to order or for answers to questions.

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Open Tuesday - Saturday
12 pm - 7 pm
Or by appointment. Call!
Closed Sunday and Monday

180 Patton Avenue
Asheville, NC 28801

828.254.0402

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Tube Amp Maintenance

As moody and high-maintenance as they can be, we looove tube amps, old and new. We’ve gotten in 60 year old amps whose original tubes still sound great (if you like a little crackle with your drive), and like-new amps whose tubes already need replacement. A bit of it is just luck– some are going to hold up better than others– but if you wish to maintain your beautiful tones, a little bit of attention and maintenance can take you a long way. Treat it like a small animal! No feeding or clean-up required. Here are some tips from our techs:

  • Don’t leave it in a car, whether it’s hot or cold out. (Also a proactive theft preventative.)
  • Don’t take it directly into the heat from your ice cold house, condensation can occur. And even though you melted everyone’s face off, it’s not the best idea to take it right outside into a blizzard either – make it the last thing you take off the stage to give the tubes a chance to cool down.
  • If you’re blowing tubes continuously, replacing them is not necessarily the answer– there is likely a deeper problem that needs to be addressed.
  • Much like a puppy, try to avoid dropping your precious vintage tube amp. And not just off tall buildings– don’t drop it from two inches high, either. Please.
  • And on that note: wheels on a combo amp are a dangerous convenience. Unless you’re wheeling your pride and joy on only the smoothest of freshy-Zambonied ice rinks, the slight ripples in the floor result in major quaking (and possible damage) in the upper components.

Don’t get overwhelmed– you and your tube amp can have a long, loving relationship without too much trouble. And once you find that tone you really love, how could you not strive to maintain it?

Any questions? Give us a call! We’re here to help.

 

What’s the Bigsby Effin’ Deal?

IMG 0696 e1336597673248 225x300 Whats the Bigsby Effin Deal?
Bigsby tremolo bars, also known as whammy bars, vibrato bars, and tremolo arms, are a beautiful piece of spring and metal that can alter the sound of your guitar. First, let’s distinguish tremolo and vibrato, because though the terms are frequently interchanged, they are different things. Tremolo and vibrato may seem identical, but they are separate entities and they get mad when you confuse them.

vibratotremolo1 Whats the Bigsby Effin Deal?

So don’t say “Mary Kate” when you mean “Ashley”. A Bigsby, as it turns out, actually creates VIBRATO, though everyone calls it a tremolo bar. (So, wait, is that Mary Kate or Ashley? Oh god, I’m so confused…)

Now that you know that vibrato is a change in pitch, let’s examine how a Bigsby works. A Bigsby attached to the bridge of a guitar, and changes the pitch of the strings by actually lowering or raising the bridge. When pushed down, the bridge lowers and thusly lowers the pitch, and up means up and up. Just don’t go too far up or you’ll bust it– there is less flexibility on up-bends. What gives Bigsby its unique flavor is that its spring-loaded. This makes it more suited for slow and subtle bends, and helps your guitar stay in tune better than a floating bar, which more directly shifts the bridge. (Some Fender vibrato bars also have a spring, such as on our Jaguar)

So what can you do with it? You can be like this guy. Or this guy. Just don’t be like this guy.

In conclusion: Vibrato? Put it on the pizza.

The Workhorse

Gibson’s J-45 was first introduced in 1942. Since then, it has reigned as one of the most popular and well-made acoustic guitars. They are known for warm, full tone and excellent projection.

68GibsonJ45Black 300x131 The Workhorse

Snuggle up with this black beauty

A few years back, the Gibson team decided tackle a crazy project: build a new vintage guitar. They wanted the sound of a mint 1942 J-45, but with brand new materials– no detail was too small, down to using hide glue: a thinner, organic alternative to today’s adhesives, so nothing would impede the guitar’s vibration. Same top-bracing, all done by hand, gently rounded upper bout and deeper lower bout for gorgeous projection and well-rounded tone.

So here he is, the 2010 reissue, live at Sherwood’s. And we just kicked $600 off the price, because we love you.

Take a peek

Instrument Cables, Speaker Cables, and How to Avoid Spontaneous Combustion

Don’t get us wrong– we love repairing your gear.  But there are some common mistakes we see over and over again that are so easily preventable it kills us. Today’s lesson should provide a little guidance in Not Breaking Your Own Stuff 101.

Lots of folks take a look at a cable with 1/4″ phone plugs on each end and see a dual-purpose speaker and instrument cable. However, pick the wrong cable for the application and yes, it will plug in, and it will even work (ish), but best case scenario it will not perform well and worst case it’ll catch your output transformer on fire.  We’ll be happy to fix that for you, but why not save yourself the surprise of a blowout mid-gig and let us fix the really interesting (read: confusing) issues that are bound to occur all on their own.

So what’s the difference between speaker and instrument cables, and how can you tell?

Coaxial cable cutaway.svg  300x210 Instrument Cables, Speaker Cables, and How to Avoid Spontaneous Combustion

Coaxial cable (image via Wiki)

An instrument cable is coaxial.  That means there is just one small diameter center conductor. That’s all you need to transmit the low power signal from your instrument to your amp. Your amp then boosts that signal to a usable level. This center wire is encased by a braided shield conductor and insulators that keep that small, sensitive signal from experiencing any interference. An instrument cable will often be smaller, lightweight, and more flexible than a speaker cable, but some are beefed up with tweedy covers or other accoutrement that confuse their application.  Sometimes there is a helpful identifying mark– such as the word “instrument” printed on the cable jacket. Speaker cables are usually marked as such while instrument cables may or may not have an indication as to their application.

Now that you know what an instrument cable is– DO NO USE IT FROM YOUR AMP TO YOUR SPEAKER! I don’t care what your band mate says– it will not sound awesome.  You may not notice much badness at low levels, but once you crank it, all the power coming out of the amp can’t make it through that little instrument cable, so its going to turn into hot heat. You can probably guess that electrical heat can be a bit of a safety concern, plus you’re working your poor output transformer (you are playing a tube amp, right?) to death.

A speaker cable needs to transmit a lot more power than an instrument cable. Generally, it’ll have two equal gauge wire conductors (as opposed to one signal wire and a shield) and the wires will be beefier.

Using your speaker cable for your instrument isn’t so much of a fire hazard, it’ll just hum like crazy. The reason for this is that, as you may recall if you’ve been taking notes, the instrument cable is well insulated, because the sensitive little conductor easily picks up outside interference.  The speaker cable is left unshielded, so when you plug it into your guitar you’ll get buzzing from the fluorescent lights, other power supplies, and swarms of electric killer bees.  If you want overdrive and distortion, this is not the way to get it.

Take five seconds to figure out what kind of cable is in your hand, and use them correctly– you will be rewarded for your diligence with more massive rocking potential.

Thanks for tuning in.  Oh yeah, and we have lots of appropriate cables in store, so no excuses.

Sources:

http://techtips.salon.com/difference-between-instrument-cable-speaker-cable-21225.html

http://www.fender.com/news/index.php?display_article=458

http://en.wikipedia.org/wiki/Coaxial_cable

 

Electrolytic Capacitors: Better with Age or All Wore Out?

Electrolytic capacitors, or caps, make a huge difference in the sound of your amp that you may not be aware of.  Thusly, there’s a pretty big divide between those who get all excited about original caps and those who’d rather switch them out for quality control.

IMG 09161 300x225 Electrolytic Capacitors: Better with Age or All Wore Out?

Like beautiful, unique snowflakes.

If you’re a musician, and you don’t know about these guys, you oughta.  While obsessive behavior about any single component may drive you  (or your uninterested friends) mad, being aware of what you’re working with will make you a higher functioning shredding machine.  This is going to be a fairly elementary overview, so if you’re bored, please skip ahead and look at some pretty things.

In your power supply, the caps function as filters.  Electrolytic caps stabilize voltage by sourcing or sinking current as it’s demanded by a load, preventing a sudden change in potential.  You see, you need science to rock.

Despite semi-popular belief, caps only really last about 6-10 years.  Given, that’s a big range, but its all dependent on how and how much they’re used. Even idleness can deplete their quality (through corrosion).  They need periodic charging to maintain the oxide layer and stay formed.  After a time, they start to leak either chemical or current and can fail to filter at all, which will cause humming (or joyful motorboating) in your amplifier.  The leaking of current can also cause a strain on other components and possibly lead to blowing a fuse.

So why keep ‘em if it may compromise the sound?  Because, much like your Star Wars figurines that gather dust in their plastic cases, vintage amps are more valuable when completely intact and original.  Hardcore collectors and dealers want the amp to look like it did the day it was born, even though time and (albeit limited) use may have taken their toll.  But there’s something to be said for a vintage commitment and rebellious streak– those crazy sounds you’re getting could make you intensely happy.

You can fully swing either way or define your swaying needs on a Kinsey scale of audio affiliation.  Your parents probably won’t flip when you come out as cap jobber (or not), so choose your own adventure and rock on.

Sources:

Tube Amp Talk for the Guitarist and Tech. Gerald Weber, 1997.

http://www.nmr.mgh.harvard.edu/~reese/electrolytics/