This was sent to me by our Engineer today. Please call or email if you have any questions.
I have noticed on avs forum that there is a concern regarding the latest generation of amplifiers now shipping for the MFW-15.
This new amplifier is a further evolution from the design put into place some months back. This design is a more integrated solution. We developed this product from scratch rather than having to adapt a replacement board to an existing design as was done with the previous amplifiers. This has allowed us to offer both a more powerful and a more reliable product.
This new generation of amplifier board is more powerful than the previous versions. The previous version, using the replacement amp board, produced approximately 400 watts at the rated distortion. This new amp produces approximately 500 watts at the same rated distortion (1%). The increased power can be attributed primarily to a larger mains transformer. The new transformer is a Toroid type which, besides being more efficient, produces less stray magnetic field than the older EI Core type.
The new pre-amp board is highly integrated and allows for flexibility in tailoring the equalization and features so it can be used in a family of products without redesign. The circuit boards do not look similar to the older design due to the exclusive use of surface mount components and sophisticated circuit layout. In addition to circuit design, consideration was also given to ease of manufacturing. This allows the design to be produced on an automated assembly process which produces higher quality, more reliable products.
I know that TADG has submitted this board for Agency Approvals that include CE, FCC and UL, but we will not screen the metal work to indicate this until all approvals are in house. Later units will reflect this, including the new av123 logotype.
The new amp is constructed in Colorado and will appear in many future products. We like the increase in power, but we also like the simple and very straightforward final execution of the design. Labor costs being what they are here, rather than The PRC, we feel that the design goals have been met or exceeded in every category.