The P250 is the professional version of the 2401 Amplifier which replaced
the 2400L. It added more power over the 2400L with 250W/chan @ 8 and
375W/Chan at 4 and will do a 2 ohms load. According to the Stereo
Review's review of the amplifier, they were able to get 975W output on
one channel. When they tried to do both channels, the line fuse blew on
the test bench!! The P250 adds balanced cannon jacks inputs on the rear
along with a mono bridge mode on top of the 2401 amp. It also adds two
independent calibrated rotary attenuator knobs on the front, one for each
channel. The LED power display is the same on both P250 and the 2401.
The 2401 amplifier I believed got repackaged cosmetically into the A501
amplifier to become part of the "01" series of equipment.
Unlike the 2400L or the 2500, the 2401, P250, A501 are all convection
cooled (no fans) building on the innovative 2200/2300 heat sink
technology. However, SAE did offer a rack mount fan accessory for the
amplifier. Actually the fan worked with any amplifier with the side
mounted heatsink design.
I have no idea about the circuit topology in terms of it's design
heritage. Since Jim says it based on the 2500, then the design is really
a derated 300W/chan @ 8 ohms amp design that can handle 2 ohm loads
without a blink! Obviously the power supply must have been improved to
handle the lower impedance.
James Bongiorno wrote:
Dear Joel,
The P250 is the commercial version of the similar 2500. Basically only
cosmetic differences but it still uses my fundamental circuit design. As far
as mods go, I have attached my modernization and upgrade schedule for your
perusal. All electronic equipment needs to be refurbished after a long aging
period. No different than any other product in the world.
James Bongiorno
Joel Tatelman wrote:
I'm awaiting delivery of an SAE P250 which I purchased mainly based
on
another's raves about his SAE P500. Does anybody have any experience/
comments/opinions regarding the P250? I'd also like to obtain a
schematic/service manual for this model, if anyone has any leads.
Finally, if anyone has any suggestions for tweaks or upgrades, beyond
the obvious ones of new input and output connectors, I'd be most
grateful for details.
Thanks very much.
Joel Tatelman.
Best Regards,
Mark Gurries
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Battery Charging and Power Systems Application Engineer
Linear Technology,1630 McCarthy Blvd, Milpitas, CA, 95035
WRK(408) 954-8400 x3864 Email: gurriesm@...
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