Might consider picking them up if he will go down to 150 considering the gas and the extra money I'll have to spend to. They are 200, cabinets are in great shape, he says they have new surrounds but do not have the EQ. Bose Corp itself has always warned about damaging speakers if you use the 901 EQ on non 901. Looking to possibly replace my CV D7's with a pair of Bose 901 IV's that I found for sale. You really should NOT use that equilizer with non 901 speakers, but you will do what you want to do. He beleived it was a better trade off then using a crossover. Offered today by The Music Room: One Pair of Bose 901 iv speakers with corresponding EQ.
BOSE 901 IV EQUALIZER SERIES
So much so that in January 1983, Bose® issued a product service bulletin describing their unusually high tendency to exhibit high noise or fail completely due to lead contamination in the manufacturing process. Dr Amar Bose was a fan of compensating electronically for flaws in a speakers response. Bose 901 Series IV Speakers w/ Equalizer AS-IS (need surrounds). These chips are a big, known problem in Series IV Active Equalizers. 1985 BOSE 901 Series V direct/reflecting Loudspeakers are driven by wonderful vintage McIntosh MC1000 Monster Monoblocks.Bose 901 is probably the most iconic. One interesting thing to note is this Active Equalizer came with IC sockets fitted from the factory, which were still populated with the original National LF 353 op-amp chips. The owner was reporting the left channel went out, so it’s clearly time for an overhaul!Ī little uneven, the first step was to give this Active Equalizer a new set of feet.
BOSE 901 IV EQUALIZER SERIAL
This Bose® 901 Series IV Active Equalizer, serial #219533, came through the shop for an overhaul.
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