THE WHY: Speakers are rated differently than power amplifiers. This is because the small wire inside the speaker making up the voice coil is only capable of clean non-clipped power levels. This is were the 'under powering a speaker' myth has been so twisted in it's understanding. You can't under power a speaker and damage it, but you can under power a performance or show. If the system is not large enough for the performance and the amplifiers are clipping, it will damage the speaker even though the wattage of the speaker is rated higher than the amplifier. Also, sine wave bench test signals, used to measure the RMS power of an amplifier, are too constant and can heat a speaker voice coil up prematurely not representing a speakers 'real world' rated output.

Archtop guitars have a four- or five- digit serial number with configuration ##(#)YY. Carvin suggests dating your guitar by certain features rather than the serial number. Rickenbacker has a serial number decoder on their website.

THE WHAT: OK, now to the root of continuous, program and peak speaker ratings. A speaker is tested using pink noise limited to (or crossed over at) the lowest frequency the cabinet was designed to work.

In many cases this is around 30-40Hz for mains speakers. The continuous rating is the RMS value of the pink noise. The peak rating is 6 DB higher than the continuous rating where most of the peaks generated in the pink noise reach. I say most, because there are some higher peaks. The program rating is an in between value of 3 DB over the continuous rating suggesting a nominal power with heavy music. If the speaker is need for rated power usage, the program rating is a good target to use to determining the needed amplifier power for the speaker.

If you are going to use a speaker at its rated program power levels, be sure not to clip the amplifiers - at least not consistently. An occasional clip is hard to prevent, but continuous clipping is a mater of time before the speakers are damaged.

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In these cases the system needs to be either increased in size by adding more amplifiers and speakers, or limiters should to be used to hold the system to within it's rated capacity. AG100D Replacement Chassis: Availability: Please call a head of time, before going to the Carvin Store to pick it up. Units upon request will be available on Thursdays if requested with sufficient time of notice. San Diego Store: (858)487-8700 -1 week availability- Bring the original amp with you; you don't need to bring the cabinet.

It is important that you call a head of time because the amp may not be in stock. Installation Procedures: Unplug the Speaker cabinet from the back of the amp. Unplug the power Cord from the Amp. Take out the 4 screws on the top, and then slide the amp out through the front of the cabinet. Reverse for installation. Carvin Service - 1(800) 854 2235. SX300 Replacement Chassis: Availability: Please call a head of time, before going to the Carvin Store to pick it up.

Units upon request will be available on Thursdays if requested with sufficient time of notice. San Diego Store: (858)487-8700 - 1 Week Availability - Bring the original amp with you; you don't need to bring the cabinet. It is important that you call a head of time because the amp may not be in stock.

Installation Procedures: Unplug the Speaker cabinet from the back of the amp. Unplug the power Cord from the Amp. Take out the 4 screws on the back to remove the back cover. Then remove 6 screws on the top of the cabinet, then slide out the amp, through the back of the cabinet.

Reverse for installation. Carvin Service 1(800) 854-2235. SX200 Replacement Chassis: Availability: Please call a head of time, before going to the Carvin Store to pick it up. Units upon request will be available on Thursdays if requested with sufficient time of notice. San Diego Store: (858)487-8700 - 1 Week Availability - Bring the original amp with you; you don't need to bring the cabinet. It is important that you call a head of time because the amp may not be in stock.

Installation Procedures: Unplug the Speaker cabinet from the back of the amp. Unplug the power Cord from the Amp. Take out the 4 screws on the back to remove the back cover. Then remove 6 screws on the top of the cabinet, then slide out the amp, through the back of the cabinet. Reverse for installation. Carvin Service 1(800) 854-2235.