Extrait de la lettre d'information a propos du Mark1 envoyé par Randall a l'epoque en 76 :
Citation:
SPEAKERS The standard l2 inch speaker is either a Vega,G-l2 or, with the Hundred Watt option, an Eminence speaker designed especially for us. It features a 2 3/4" voice coil 4" paper dome, and a 125 watt rating. It is capable of crisp tones over a fairly large dynamic range and is reliable under heavy conditions. As options we also offer the Altec 4l7-8H Series II (list price now $l79) for $85 from us when installed in your amplifier. It is the most popular and highest recommended for its fat tone, and outstanding reliability at high volume, and is the continuing choice of Santana. For jazz and country players the brighter, more sensitive response of the JBL IC-120 might be preferable as used by Garcia or Carlton; it has a clearer, more present sound and has the most versatile range of volume-tone response. So, in summary: the Altec is best for continuous loud playing but loses presence at soft volumes, the JBL is best for all around playing at all volumes and clean or funky versatility; the standard Eminence works well with 100 watt amps and loud playing but again lacks low volume presence and clarity. To get super performance from a Sixty watt model, we recommend the JBL K-l20. Gauss and Electro-Voice EVM speakers also sound great in a Boogie and have a generally tauter, more rigid sound than the others. They also weigh more make access to the Boogie's tubes a little hampered. In the 15" series, we prefer the JBL K-130 as having the best balanced tone at any volume, again clearer and brighter but still very fat. For the sound of raw power, especially where the amp is used for heavy rock lead, we recommend the Altec 15 as being the thickest sounding but lacking in versatility. All of the above are 8 ohm speakers. The amplifier likes any load between 3 and 8 ohms--4 ohms is ideal--so extensions can be used very successfully with any amp. Generally though, no more than three 8 ohm speakers should be used at once for optimum performance. All 100 watt amplifiers now come with 8 and 4 ohm outputs which allow a wide choice of power levels and speaker matching when used with the 100/60 watt switch. Four-12 Marshall cabinets work well as is, especially in conjunction with the Boogie one 12 or one 15. Otherwise for maximum power, where a Boogie top and a Marshall cabinet is to be used, you can usually rewire the cabinet for lower impedance.
