Trying to set up Bose 901 series VI to a Nakamichi AV 500 also what gauge speaker wire from amp to speakers

Yes.

http://worldwide.bose.com/productsupport/en_us/web/901_series6/page.html

Follow the instructions for hooking up the equalizer.

Found on Google Search: "bose 901 internal wiring" You must first identify which series you have. The first two series were acoustic suspension, and used nine 8 ohm drivers in a series/paralel configuration. Series III through VI used nine .9 ohm drivers all wired in series. Series III and IV had an additional terminal for use only with the Bose Spacial Control Receiver. Series III through VI are easy to identify, as there are three ports sticking out the back of each enclose. The 1st two series have no ports.

Short answer from personal experience.

There is no way around this part. Get a separate power amp for the 901's if you want to use them in a multichannel way or alongside non-901 speakers.

The reason: You can't use the Active EQ (or ANY processor) in a tape Monitor loop with anything but 2-channel stereo material. As soon as you activate the loop you lose digital sources.

Adding to YOUR particular problem is that the Denon doesn't have a volume-controlled pre-out to feed that amp. If you want to deal with controlling the separate amp volume manually you COULD connect the Active EQ between DVR Out and the 901 amp IN but you would have a stereo mixdown instead of true front channel from the speakers.

Bummer.

Ideally, an amplifier or receiver should have either a "Tape Monitor" selector switch and Tape Input & Tape Output jacks, OR have Preamp Output & Amp Input jacks to enable insertion of the Bose Active equalizer into the circuit before the amplifier stage. Power requirements - according to the 901 Series VI manual:

"Your 901 speakers are designed to work compatibly with receivers or amplifiers rated from
10 to 450 watts per channel."

If you have questions not answered by the manual, you can contact customer service at The Bose Corporation in Framingham, MASS toll free at:

1-800-999-2673
Hours of operation:
7 AM - 2 AM ET, 7 days a week

I hope this helped & good luck!

This receiver has no pre-amp outs to drive the required separate amp the 901's need for you to continue to have multichannel digital audio. The reason: activation of a tape loop disables digital inputs. But they DID give you Front Height. Oh boy.

For stereo audio only: Any powerful receiver with at least one Tape Monitor loop will work. No other speakers types (excpet 901 -1 or -2) will be supported by the receiver running the 901's. 901 series 1's are very power hungry so figure on 150 REAL watts per channel and clean.

For multichannel audio and the 901's as the front speakers: Any AV Receiver with a set of Preamp Outputs for Front L and R; AND a separate HIGH-powered amplifier to drive the 901's ONLY.

I believe there are two nuts on each post. The first one locks up against the firewall and the second secures the speaker wire against the first nut. Tighten the lower nut snug against the enclosure.

I would recommend a high power 2-channel amplifier, minimum 16 guage speaker wire, and of course the Bose 901 active EQ that matches the series of your speakers. I use a Yamaha mx-830 power amp & cx-830 pre amp 170 wpc They (Bose) claim that they're unlimited power handling, But if you use a amplifier with to little power and overdrive it to make it louder, you could damage the speakers or amp. With my 170 watt class A amp,the 901 series 6 will blow wind across the room. Go with the best amp you can afford! best for money- Yamaha,Denon,Onkyo!

Yes! When the Bose ~Steve901 first came out that was the amplifier of choice -like the McIntosh classic amps. The 901s have their own equalizer as that speaker system is a phased-array, 

i, trying to hook up a powered subwoofer to my hafler dh 110 and dh 500 running a bose 901 series v active equalizer and series v 901s any info would be appreciated