RMS SERIES

RMSG12 12 Watts RMS-6.5" Speaker Control Functions Drive Input Gain Tone Volume Headphone Jack                           List $ 99.00 Weaver's $ 89.00

RMSG20 20 Watts RMS-8" Speaker Control Functions Input Channel Select Clean or Overdrive Gain Control for Overdrive Vol. 1 (Overdrive) Vol. 2 (Clean) Clean Channel High, Med., Low CD/Line In Headphone Jack Footswitch Jack External Speaker Jack Line Out Dimensions: 13.25 High 15" Wide 7" Deep       List $139.00 Weaver's $109.00

RMSG20R 20 Watts RMS-8" Speaker Control Functions Input Channel Select Clean or Overdrive Gain Control for Overdrive Vol. 1 (Overdrive) Vol. 2 (Clean) Clean Channel High, Med., Low CD/Line In Headphone Jack Footswitch Jack External Speaker Jack Line Out W/Reverb Dimensions: 13.25 High 15" Wide 7" Deep   List $169.00 Weaver's $139.00

RMSG40 40 Watts RMS-10" Speaker Control Functions High Input Low Input Channel Select Clean or Overdrive Gain Control for Overdrive Vol. 1 (Overdrive) Vol. 2 (Clean) Clean Channel High, Med., Low CD/Line In Headphone Jack Footswitch Jack External Speaker Jack Line Out W/Reverb Dimensions: 16.5" High 16.75" Wide 8.75" Deep List $229.00 Weaver's $$179.00

RMSG80 80 Watts RMS-12" Celestion Spkr. Control Functions Input Channel 1-Gain, Voice, Low, High, Vol., Presence Input Channel 2-Gain On , Bass, Mid., Treble, Volume CD/Line In Headphone Jack Footswitch Jack External Speaker Jack Line Out W/Reverb Dimensions: 20.0" High 20.0" Wide 10.5" Deep       List $319.00 Weaver's $249.00

 

RMS SERIES

RMSB20 20 Watts RMS-8" Speaker Control Functions Hi & Low Imputs Vol. High, Med,, Low Presence CD/Line In Headphone Jack Line Out Dimensions: 13.5" High 15" Wide 8.75" Deep       List $139.00 Weaver's $119.00

RMSB40 40 Watts RMS-10" Speaker Control Functions Hi & Low Imputs Vol. High, Med,, Low Presence CD/Line In Headphone Jack Line Out Dimensions: 17.5" High 16.75" Wide 11.75" Deep       List $229.00 Weaver's $179.00

RMSB80 80 Watts RMS-12" Celestion Speaker Control Functions Hi & Low Imputs Gain Vol. High, Med,, Low Presence CD/Line In External Speaker Jack Headphone Jack Line Out Dimensions: 20.0" High 20.0" Wide 13.5" Deep List $349.00 Weaver's $279.00

 

RMSAC40 40 Watts RMS-10' Woofer @ 2" Tweeter--Control Functions: 2 Channels w/sep. Vol. Control Channel 1-3 pin Mic. In 1/4" Line In-CD In Channel 2- 1/4" Guitar In-Active/Passive Electronics Sel. 3 band EQ Reverb on/off & control Chorus on/off & control Effects Loop Line Out Dimensions: 20.0" High 23.0" Wide 15.0" Deep List $229.00 Weaver's $179.00

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If you have any questions Weaver's Music  can be contacted by phone at 847-741-8418 or by email.
Weaver's Music will only ship product to addresses in the United States of America.

For things you need to know to properly select the right amp.: Click Here
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Terms you need to know to select an amp!

Limiter
The limiter is provided to protect your amp and your speakers. It keeps the power amp from clipping, while maintaining full power without distorting the signal.

Pre/post Line Out
Players can use this to bypass the internal EQ and power amp of their rig, sending a balanced signal to a mixing console. By running a signal directly from the amplifier into the mixing console, clarity (and especially lower frequencies) are not lost to post-speaker milking.

Contour Circuit
This is an effect that will adjust the midrange frequencies, both in terms of midpoint and level. "Shifting" them up or down, players can dial in a wide variety of tones more quickly than setting each individual frequency.

Effects Loop
The effects loop gives you ability to "mix" an external device into the overall sound that your amp produces. Most effects loops consist of a SEND jack and a RETURN jack. The SEND jack is the outgoing signal from your amp and goes to the input jack of your effects processor. The return jack is for the incoming signal and comes from the output jack from your effects processor. (See your owner's manual for more information).

Slant Front Cabinet
The cabinet is slanted to provide the clearest tone for players and listeners. It points the speakers and especially the tweeter, toward ear level and projects the higher frequencies toward the head.

Ground Lift
A ground lift is used to eliminate ground loops that could occur in a multi-input/output situation, such as a CRATE acoustic amp with multiple channels. Essentially, the ground lift eliminates hum and provides a cleaner tone.

Feedback Notch
Because of the highly resonant properties of certain instruments (especially acoustic instruments) they are inclined to feed back into the amplifier very easily. The feed back elimination circuit de-emphasizes certain frequencies that tend to create a "squeal" or "feedback loop". This provides players a much higher level of clarity when practicing or performing at high volume levels.

Phantom Power
Some microphones (condenser) require a small amount of power to operate. These mics utilize external "phantom" power to operate at their optimum level. This feature supplies that required amount of power to selected jacks. Check your microphones to see if they require phantom power and/or an internal battery.

Digital
A digital amp uses a "model" of a real or live amp sound.

Ohms
A few other terms that are tossed around quite a bit but which are not often known are ohms, impedance, parallel, series, RMS, watts and power rating. Most of the terms are used when describing an amp's power and speaker characteristics.  Speakers have an impedance which is measured in ohms, derived from Ohm's Law which formulates the relationship between voltage, current and resistance. Impedance is defined as the resistance of an alternating current. Amplifiers are designed to work best at a specified impedance: the amp and speakers should operate at the same ohms. An impedance mismatch in a tube amp can result in damage to the output transformer (it may even burn up). A mismatch in a solid state amp would result in possible distortion while the amp would not be operating at maximum power.

A solid state amp features integrated circuits, or "chips" and transistors. An integrated circuit features many transistors on one chip. Like computers and other electronic products, a circuit board houses the "chips" and connections necessary for the amp to operate. Like tube amps, solid state amps have both a preamp and a power amp; however, the power amp section is wired directly to the speaker eliminating the need for an output transformer

Currently, many solid state amps feature MOSFETs (a solid state device) in the power amp section which offer tube-like sound without using actual tubes.

Tubes
Prior to the 1950's, electronic products such as amplifiers and radios operated on vacuum tube technology. Tube amps have a number of tubes which contain a lot of scientific stuff like plates, grids and cathodes which end up moving energy around resulting in sound reproduction. Now keep in mind, the scope of this article is a primer about amps and the sonic differences that result. For a really in-depth look at tubes and how they work, check the Internet, library or bookstore for a variety of books written on the subject.

A guitar amp has a preamp section and a power amp section.
The preamp section is where the signal from your guitar is processed and where the sound shaping begins. Typically, a smaller tube, often a 12AX7, is used in the preamp section of an amplifier. The power amp section receives a weak signal from the preamp and turns it into a stronger signal with enough power to send it to the speakers. The tubes found in the power amp section are physically larger than preamp tubes and may be of a wide variety with different tubes producing different results.  Other items found in tube amps that are equally as important to the preamp and power amp sections are transformers and the power supply. The output transformer takes the signal inside the amp and "transforms" it into something the speaker can accept. Without an output transformer, the power amp section and speakers would not be able to communicate. Almost all tube amps have two transformers: the previously mentioned output transformer and a power supply transformer which takes the alternating current (AC) from the wall and converts it to different levels of voltage for powering the various components. (see inset picture-picture of black box and then shot of inside of transformer). The power supply transformer is part of the power supply and is the heart of what actually power the amp.

Watts
When searching for an amp, you will invariably hear the terms watts and RMS. Power is expressed in watts; the more watts, the more power and the louder the amp is. There are different ways of expressing watts, the most common being an RMS power rating. This acronym stands for Root Mean Square which is a fancy mathematical expression for a way of measuring power. When comparing the power of two amps, it is important to compare the same power ratings; with amplifiers, the most common is RMS.

Whether a tube or solid state amp, what objectives would you like to meet with your amp purchase? Sound, price, size and weight, features, power ...there are many factors that determine the amp you will buy.

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