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Bose 601 "owner" opinions please

I am also entertaining the idea of building 601 Series II from scratch as a project speaker. However, there are a lot of difficulties in finding tweeters and optimizing the system impedance as I am thinking to use non-bose replacement parts. I have a question and also appreciate your feedback.

I wonder how come 2 series-connected woofers with 6 Ohm impedance make 601 S II overall system impedance 8 Ohms.
 
Bose 601 parts are fairly inexpensive and easy to come by, they're all over eBay.

Don't forget the tweeters when doing your impedance calculations, or the dome light bulb in the circuit either.

It all "adds up" but I don't think it's a true 8ohm speaker either.
 
Bose 601 parts are fairly inexpensive and easy to come by, they're all over eBay.

Don't forget the tweeters when doing your impedance calculations, or the dome light bulb in the circuit either.

It all "adds up" but I don't think it's a true 8ohm speaker either.
Thanks, I think I need to dive deep to analyze the circuit characteristics.
 
Bose 601 parts are fairly inexpensive and easy to come by, they're all over eBay.

Don't forget the tweeters when doing your impedance calculations, or the dome light bulb in the circuit either.

It all "adds up" but I don't think it's a true 8ohm speaker either.
They aren't all that inexpensive anymore. I've been looking. Wanted to built a set, from scratch, with sturdier cabinets. Parts prices are insane now.
 
All Bose speakers were about creating an illusion. No thing more nothing less.
That's a ridiculous statement. That could be said of any brand of speaker, the illusion of "being there", "like you were IN the studio". So many advertisements made claims that could easily be put in the same category as Bose. You're statement is just Bose bashing and nothing more. I own 901 Series II Continentals, Pioneer DSS9, JBL L65 and more. They all have admirable characteristics. They all have their respective drawbacks. And they all bragged about "realism".
 
I had a tenant leave behind a single 601, it sounded decent, better than 901 IMO. I only listened to it for a day before it sold, so they're easy to flip.
 
Had two pair. Sold one pair. The other pair inadvertently got left behind after a divorce and move. Miss mine. Would love another pair. 601 vs 901 favors the 601 IF the 901 doesn't have the EQ and is under powered. With the EQ and at least 150wpc, absolutely NO contest. 901 smashes the 601.
 
I always wonder what it would be like to rebuild from scratch an old, vintage speaker that already sounded very good (like the Bose 601series III) but use all new modern drivers & extremely thick, non-resonating MDF particle board... like 1" or even thicker?! Like one of the guy's here (Sridah or ?) said he wants to do with Infinity Emit tweeters/soft domes/hard domes, etc... . Maybe use Morel woofers? Or even old school woofers from another set of speakers which have cabinets that are toast? Like some Infinity RS6000's that I just parted out. I removed/kept EVERYTHING from the cabs & trashed the cabs due to their extreme water damage/absorption. Now I have four 10" woofers, two Polydome midranges, & two EMIT tweeters to play around with. I have other Infinity speakers (like the 2000A's, CS3006 & the RS4b, a single Kappa 6) which have similar driver set-ups, but have way better cabinetry quality. What I always think about it doing is a DIY with driver's like these but in the design of another speaker, like the 601 Series III. A thick, heavy-duty cabinet without any resonances (maybe with B&W Prism speaker technology inside which eliminates standing waves? Pyramids on the interior walls) with the design of the dual chambered woofers ported into another chamber then slot ported out the bottom rear. Using EMIT tweeters & Polydome midranges (facing the same angles as the Bose) but using four EMIT tweeters & four Polydome midranges for EACH speaker cabinet, instead of only 4 "twiddlers" per speaker cabinet. This way, mids & highs are taken care of by their specific drivers instead of only one "full-range" paper, "twiddler". The EMIT tweeters also play to 45khz!! Way beyond human hearing but it helps in 2nd, 3rd, 4th order harmonics, etc... . Many people complain that Bose uses "cheap", paper drivers but charges an exorbitant amount of money for their speakers, which to them is not justifiable. Well, I'd like to see/hear more expensive, higher-quality drivers perform in their place... just to experiment & see if there is a huge difference in sound quality or not. Infinity used rear facing EMIT tweeters on their Kappa 9's & they sounded phenominal! They also used bipolar ribbons on their 2000A's (which I actually have, thank God!) & they are some of the best speakers I've ever heard. These are not exactly the same angle of reflection that the Bose does, but they are reflecting none the less... more dipole I guess. So Bose's so-called "direct-reflecting technology" has been used (to a degree) by many other companies (including EPI) & with great success, so why can't someone use thicker cabinetry & different drivers to accomplish the same or hopefully better results? Some believe to leave a great speaker alone & I agree, but if you can make a speaker out of old, spare parts & some thicker MDF sound just as good or possibly better than the original... and you are having a blast doing so... then go for it. You will learn things along the journey which you didn't know before & may even be able to share your project with other loved ones who might want to join/help you work on it. (A father/son project... a father/daughter project... a husband/wife project... a grandfather/grandkid project... a neighbor/neighbor project... a friend/friend project... whatever?)

I wish Bose would come out with upgraded direct replacement drivers for these older speakers... like real woofers with butyl rubber surrounds, heavy-duty magnets (neodymium?), cast aluminum frames with sound deadening material applied to the back of them, with the ability to go down to 20hz (or even a little lower?) &, even better, newly upgraded 3" "twiddlers" with a KEF-like UNI-Q tweeter in its center or at least a screw-in metal bullet (like B&W has, but it's in plastic) to hit 20khz+ & maybe use kevlar or something for the midrange cone material? Use high-grade caps/coils/resistors/internal wiring & whatever other crossovers parts are necessary. Real wood veneer would be mandatory. It would look like a Bose 601 Series III, but sound much better & possibly look better, depending on which real wood veneer you used.

Has anyone else had these crazy ideas before or am I the only one?

I completely agree and already started my project Bose 601 Retrofit. Using pre-owned BOSE genuine parts. I have a question, what is the difference between three versus two wire terminals connecting the tweeters and sub-woofers?
 
I completely agree and already started my project Bose 601 Retrofit. Using pre-owned BOSE genuine parts. I have a question, what is the difference between three versus two wire terminals connecting the tweeters and sub-woofers?
I have a pair of series 2 that I bought new for $150.00. This was somewhere around 1982. I couldn't believe my eyes when I saw the price. When I asked why so low, I was informed that they buzzed and nobody could figure out why. I gave them a listen and sure enough they buzzed. As I listened, I realized it wasn't coming from any of the active components. It had to be somewhere else. Yep. The wire connectors were not screwed on tight. I tightened them and voila - no more buzz. I called the salesperson over a said I'd take them. I was reminded several times that the sale was final. If they don't work, you cannot return them. I said I understood and to this day I am still smiling. I've listened to others and found them wanting. I'm listening to them right now.

I have a pair of Klipsch FS-2's next to the 601's that I rarely use. They cost me approximately $2.25. That's right, Two dollars and a quarter. A friend alerted me that his neighbor was trashing them because one tweeter was blown and would I like them. OF COURSE!
When I got them home - sure enough, one driver inoperative, but replaceable. I ordered 2 drivers that measured the same size for 98 cents each off ebay. It gets better. The drivers had part numbers on them that were the same as the blown driver! Klipsch had recently ceased making the FS-2 and dumped all left over components on ebay. Thank you, Klipsch.
 
I have Bose 601 series 3 that I like alot hooked up to a Onkyo TX-8511 and a Onkyo Grand Integra pre amp P-308 I also have Bose 901 series 6 version 2 hooked up to a Onkyo Integra M-504 and a Nad C 165BEE pre amp both systems sound great the next house will have a room built for 901s and 601s not everybody likes Bose but if you came to my house and played them for you might change your mind and this house is not built for the speakers
 
In 1987 they were $699 IIRC. Bose worked hard to hold retail prices over time. Often this involved some "value engineering" on later models. One of the reasons early 301s are valued more than later series.

The 601s need a stiff amplifier to get them rolling.
 
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