Posts Tagged ‘amplifier’

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How to play the Amplifier

Two questions we get asked most frequently about guitar amps are:
1. How do I get a high level of sustain or overdrive from my amp without necessarily turning it up too loud and
2. What am I supposed to do with the tone or EQ controls on the amp.

In this lesson we shall address both of these subjects.

First let’s look at setting up your amp to get the most sustain at reasonable volume.

Now one difficulty about discussing amplifiers is that, manufacturers differ in their choice of labels for the controls on different makes of amplifier.
One manufacturer will label a control ‘Volume’ another ‘Gain’

We also get ‘Boost’, ‘Level’ ‘Pre-gain’ Post-Gain’ ‘Overdrive’ ‘Distortion’ ‘Input volume’ ‘Output volume’ and ‘Master volume’ — all labels on knobs that basically do the same thing — they allow you to control the amplitude of the signal passing through the circuitry of the amplifier at some given point.

Added to this complication, some amps have multiple channels and some even multiple inputs.

Now, if you have got more than one channel or input choose one that is labelled ‘High Gain’, ‘Overdrive’ ‘Distortion’ or some such label indicating more power.

Avoid channels labelled ‘Clean’ or ‘Low Gain’

Now look at the control panel of your amp and locate the input socket — this should be where your guitar lead is plugged into the amp.

Whatever labels are used on your amp we’ll call the one closest to the input socket GAIN and the farthest one VOLUME.

Whatever the layout, for the purposes of our instructions, in a case like this we will refer to the two controls nearest to the input socket as GAIN and the control furthest from the input socket as VOLUME.

So here’s how to apply this to your amp settings.

First, as an important precaution, turn the Volume control (the one furthest from the input socket to zero).

Next make sure that you are feeding the amp as much signal as possible. This means TURN up all controls on the guitar to 10.

That’s Volume and tone. Have as many pick-ups selected as possible and if you have any kind of active circuitry (boosters) switch it on .

Then, in the interests of maximising pressure, turn the gain on the amp straight up to 10. Remember if there are three controls affecting sound levels on your amp then this applies to both of the controls nearest the input socket.

Remember you have just created the audio equivalent of a primed and loaded bomb! With this much ‘Pressure’ in the system, the output volume control is going to be pretty sensitive so TURN IT UP S L O W L Y

So there you are — you won’t get more sustain out of your system than that!

Now here’s a good way to set the EQ.

Again amps will differ, but the vast majority will give you some control of Bass Middle and Treble.

Set the volume level on the amp as high as you reasonably can, because the higher the volume the more clearly you will hear the effects of the EQ controls. If you are going to be playing clean then select the cleanest setting, if you are going for sustain then set the gain and volume according to the instructions earlier in this lesson.
Now Shut down the treble and middle controls to zero and set the bass on 10.
Test this setting by playing the lowest sounding strings on the guitar. It will almost certainly sound too boomy..

Turn the bass down until the lowest notes on the guitar sound about right.

Next turn the treble all the way up and test the highest notes you are likely to play. They will sound too tinny…

(Shown on video)
Turn the treble down until the highest notes on the guitar sound about right.

Finally, strum a chord across all six strings and feed in the middle to restore a bit of warmth and body to the sound. Too much middle can make things sound a bit thick and muffled — too little and the sound is a bit brittle or cold sounding.

(Shown on video)

Duration : 0:12:21

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http://www.worldmusicsupply.com/Vox-Pathfinder-Guitar-Amplifier.html

Paul Kramer (Korg, Marshall, Vox) demonstrates the Vox Pathfinder 15R Electric guitar amplifier.

Duration : 0:2:51

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http://www.premierguitar.com PG’s Rich Osweiler is On Location in Nashville, TN, for the 2011 Summer NAMM Show where he visits the Godin/SR Technology booth. In this segment, we get to see and hear a demo of the SR Technology Jam 100 Acoustic Amplifier.

For more Summer NAMM ‘11 videos or to view Premier Guitar’s COMPLETELY FREE digital edition magazine, be sure to visit http://www.premierguitar.com

Duration : 0:5:0

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http://www.premierguitar.com PG’s Gayla Drake Paul walks us through her latest review of the Fishman Artist Loudbox acoustic guitar amplifier, which was a December 2011 web exclusive review, and can be read online, in its entirety for free, here – http://www.premierguitar.com/Magazine/Issue/2011/Dec/Fishman_Loudbox_Artist_Acoustic_Amp_Review.aspx.

For more Video Reviews or to watch one of Premier Guitar’s 1400 other videos online, be sure to visit http://www.premierguitar.com/video

Duration : 0:10:15

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SUBSCRIBE FOR MORE VIDEOS. Buy or download my CD “Tailgate Troubadour” at iTunes http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewAlbum?playListId=39371267 or CdBaby http://www.cdbaby.com/cd/gregv or visit my website http://www.gregvmusic.com

XITS X10 15 watt EL84 Combo Amplifier brought to you by Fat Sound Guitars http://www.fatsoundguitars.com Demo by Greg V. http://www.gregvmusic.com Michael Koski owner and designer of XITS Amps http://www.xits-sound.com The stock Fender Nocaster Tele and Gibson Historic SG are direct into the amp, no pedals were used. The voice mic picks up the ambient room sound and a small room reverb was added in post production.

Duration : 0:9:3

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http://www.invodo.com/
See a demonstration of the Mark Acoustic – Acoustic Amplifier Combos.

Duration : 0:2:29

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SOUND SAMPLES @ 06:31

This video shows the Palmer DREI Triple Single Ended Amplifier explained by Markus Torvinen (Palmer Engineer) and Robin Henlich (Palmer production manager).

The Sound of the Amp was recorded trough a Palmer 4 x 12″ Cabinet with Celestion Vintage 30 Speakers and a Shure SM57 microphone.

The Palmer DREI design is more than just a visual extravaganza – it mirrors the concept and the circuitry. For the purest, most natural distortion only a single-ended design will do.

Single-ended tube circuits are straightforward and simple, providing the most organic, raw tube sounds possible. In contrast to the more powerful push-pull designs the output of single-ended circuits usually does not exceed 5 Watts. That is why single-ended circuits are mostly found in small practice amps preferred by many top-notch players for recording.

Dating back to the first days of vacuum tubes single-ended amplifiers are nothing new. However, the Palmer DREI incorporates THREE of these providing three times the output power of a standard single-ended design! Moreover, it accepts a variety of output tubes which all have their own unmistakable sound characteristics.

The EL84 is bright and “British” sounding with tons of distortion (think Vox amps), the 6V6 provides somewhat darker tones with a smoother “American” distortion flavor (think Fender), and while it is tight and bright at lower volumes the 6L6 becomes progressively darker when driven hard. With the Palmer DREI you can mix and match power tubes from three distinct amplifier tones and thus create your own voice.

Three different single-ended amps in a single unit – that’s the Palmer DREI formula!

Specifications

Tubes:
V1 – V3: ECC83 / 12AX7 Hand Selected Preamp Tubes
V4: EL 84 / 6BQ5 (Power Amp „Eins”), 5 Watt RMS ouput power
V5: 6V6S (Power Amp „Zwei”), 5 Watt RMS output power
V6: 6L6GC (Power Amp “Drei”), 8 Watt RMS output power
V7: GZ34 / 5AR4 (Rectifier)
Special design transformers, 200 mA full anode current choke
Regulated DC Preamp heating voltage
Only 5 passive parts on signal way, all tube design
Controls:
Vorstufe (Preamp controls): Normal Sättigung (LF, Muddy overdrive), Höhen Sättigung (HF, Tight overdrive), Klang (Tone control)
Endstufen (Power amplifiers): Eins (Volume control for EL 84-Single ended tube), Zwei (Volume control for 6V6S-Single ended tube), Drei (Volume control for 6L6GC tube)
Strom (Power on-switch), Bereit (Standby-switch)
Connections:
Eingang (Input): 6,3 mm Jack, 1M ohm, tuned for passive pickups
Lautsprecherausgänge (Loudspeaker outputs): 6,3 mm Jack, 4 ohm, 8 ohm, 16 ohm

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Official Website:
http://www.palmer-germany.com

Official Worldwide Distributer:
http://www.adamhall.com/

Duration : 0:10:28

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http://www.premierguitar.com PG’s Charles Saufley is On Location in Van Nuys, CA, for the 2011 LA Amp Show where he visits the Retro Channel room. In this segment, we get to see and hear demos of the RR1 Amplifier and the Fuzz and the Trouble Booster pedals.

For more LA Amp Show ‘11 videos or to watch more Premier Guitar’s 1400 other videos online, be sure to visit http://www.premierguitar.com

Duration : 0:7:25

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A review of the Ultrasound DS4 Acoustic guitar amp by Vintage Guitar contributing editor, Pete Prown

Duration : 0:3:48

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Jim Campilongo Fender Princeton Reverb Amplifier

Duration : 0:8:14

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