Using Bose 901's and equilizer from the 80's with a modern Amp

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Robbiebozo

Audiophyte
Hey everyone, i'm new to the site and i need some help. I have a pair of Bose 901's and eqiulizer from the 80's that my dad gave me and i'm having trouble hooking it up to a new amp and having it sound good. My problem is i don't know how to use the equilizer with the new amp and form what i've read the equilizer is essential for getting a non muddy sound. Please help!!!!!!
 
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markw

Audioholic Overlord
what "amp" are you talking about and, yes, those speakers sound like drek without their propriatary equalizer.
 
Pyrrho

Pyrrho

Audioholic Ninja
You should specify what you are wanting to hook the speakers up to. It turns out, though, that many modern home theater receivers have an automatic EQ system which can be used instead of the separate box that Bose provides. It will not be the same, as the automatic EQ will not merely compensate for the speakers, but also for the room effects of placement. But tell us what you have, and we can then tell you what is possible, and what is advisable, though some solutions can cost some money.
 
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markw

Audioholic Overlord
You do realize that that Bose equalizer, depending on what version 901 we're talking about, provides up to 18 db of bass boost, don't you?

No, the 901's require their intended equalizer to sound right. That's about all there is to it.
 
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Robbiebozo

Audiophyte
Sorry i didn't have all the info earlier, the receiver or amp i have is a Yamaha natural sound AV Receiver HTR-5560. If you can shed some light as to how i hook up the equilizer and the amp together in order to achieve the best sound i would really appreciate it.
 
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markw

Audioholic Overlord
Unfortunately, you cannot use an equalizer with that, and most other, modern multi-channel receivers. They do not allow a way to intercept the audio signal, send it to an external processing device, and reinsert it right back into the signal chain. Old fashioned two-channel stereos used to do this with a "tape monitor" switch but AVR's generally lack this feature.

But, not all hope is lost. Your only option is to take your signal from the main outputs on the back of your unit, feed it to the equalizers input and then take the equalizers output and feed it to an external power amplifier. Yes, you will need an external power amp to do this.

The Bose 901 is a nifty speaker but their mandatory use of an equalizer makes them a bad choice for AVRs.

Here's a copy of your owners manual. You can see these outputs on page 18 there and the procedure is pictured on page 5 of that link Steve 81 provided, except you won't be feeding it back into the receiver but into the external power amp instead.
 
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Robbiebozo

Audiophyte
Okay i have to admit that when it comes to audio equipment i am some what not qualified. Can you recommend a decent low priced external power amplifier? I came into these speakers at no cost and the lowest cost to make them produce their full potential is my main concern.
 
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markw

Audioholic Overlord
Two questions:

1) What do you consider "low cost"? There's a lot of "low cost" (read "cheap crap") out there but I suggest you avoid those. Saturday Audio* has a used Adcom GFA-5400 (125 wpc) for $349 which looks good. You can find it at that link in their "Used" section under "Amplifiers"

2) The 901 went through several series in it's 40+ year life span. The power requirements varied between them. Which series do you have?

One other thing to keep in mind here if you're just building your system. If you're looking towards a full surround system, you're going to be hard pressed to find a matching center speaker for the 901's and their "ambient" sound stage really doesn't lend itself well to home theatre appications where directionality is a plus.

But, they can be very refreshing with the right material in a two channel system when properly powered and positioned.

* I've bought several things from these guys. They are trustworthy.
 
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walter duque

walter duque

Audioholic Samurai
There are 2 ways to hook them up. 1st, if you have jumpers on your Avr between preamp and power amp section. (2) front main out to Eq to amp to speakers, providing you have pre-outs.
 
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tbgillespie

Audiophyte
Unfortunately, you cannot use an equalizer with that, and most other, modern multi-channel receivers. They do not allow a way to intercept the audio signal, send it to an external processing device, and reinsert it right back into the signal chain. Old fashioned two-channel stereos used to do this with a "tape monitor" switch but AVR's generally lack this feature.

But, not all hope is lost. Your only option is to take your signal from the main outputs on the back of your unit, feed it to the equalizers input and then take the equalizers output and feed it to an external power amplifier. Yes, you will need an external power amp to do this.

The Bose 901 is a nifty speaker but their mandatory use of an equalizer makes them a bad choice for AVRs.

Here's a copy of your owners manual. You can see these outputs on page 18 there and the procedure is pictured on page 5 of that link Steve 81 provided, except you won't be feeding it back into the receiver but into the external power amp instead.
You CAN use the Bose 901 EQ with most all modern receivers (for just $20).
The Bose EQ has to be "between" the source (CD, Sirus/XM radio, computer, Amazon Alexa, etc.) and the power amp. So you plug in all of your music sources into an audio/video switcher. The switcher output then goes into the input jacks of the EQ. The EQ output goes into the AUX (or whichever) input of the receiver. I just keep my receiver always on AUX and choose which source I want to listen to on the switcher.
RCA or GE Pro 4-Device Audio/Video Switcher - $20 at Wal-Mart.
 
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tbgillespie

Audiophyte
Post is 6 years old... lol.
I know the post is 6 years old. I wasn't writing my suggestions for you (lol). It was for those who find this thread and are looking for help in continuing to use Bose 901 speakers.
 

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