General > General Technical Chat
Ed's new bookshelf speakers. Suggestions welcome. And a fun poll.
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Ed.Kloonk:

--- Quote from: AlfBaz on March 09, 2022, 12:26:13 am ---I'm extremely sorry for mentioning the book of faces

--- End quote ---
Momma turn around a spit on the ground!


--- Quote ---but I've recently been in the market for some full sized speakers, bass mid and tweeters and there's a good range of second hand ones on there for less than a hundred bucks, especially if you don't mind rough, dinged up enclosures.
Very local to me too, looks like there's a bloke in my town that has heaps of old hi-fi stuff.
You never know what's around the corner in your neighbourhood

<abe simpson rant>
A lifetime ago I use to source 10" etone speakers from a guy in Sydney, no more than a couple of 100m from central. 30 bucks a pop and they were great for refurbing guitar amps. Very punchy sound and on par with good old fender twin reverb amps
<end>

--- End quote ---

A few years ago I stumbled upon a really nice ancient Revox receiver/amp. Bit of a deceased estate sort of thing. I'm sure the person didn't know just what they had but understandably grateful to have matters taken care of.

A little bit of contact cleaner on the pots and matched up with similar vintage giant speakers, it found a new home in the workshop of a relative, who is grateful to have workshop tunes but surely also unaware just what he has. He's a fierce eBay-er, one day the penny will drop.   ;D
MarkF:

--- Quote from: Ed.Kloonk on March 09, 2022, 09:28:17 am ---
--- Quote from: MarkF on March 07, 2022, 08:53:59 am ---I have a set of Polk Model Nine floor speakers from the late 1970's.


--- End quote ---
Good 'ole Polk.

Starting to warm up to either Polk S20 or the R200. Can't make my mind up about which tweeter. I believe if I can give them a bit of clearance from the wall and be prepared to adjust it a bit, the rear port's OK. But we still call them 'book-shelf' speakers.  :-\

Still gotta do a few more calcs to figure placement/separation etc. Rough sums a few days ago indicated that the newly mounted 2nd monitor has to go and have a more normal side by side dual monitor setup. Booo.  :(

--- End quote ---

I bought my Polk's when I was in college.  There were two stereo stores in town about two blocks apart.  One had the Bose 901 and the other the Polk Model Nine.  I would go in one store and listen for a while, then run up the street and listen to the others for comparison.  Price one out.

The store with the Model Nine's one day had two pairs setup.  Two left speakers beside one another and two right speakers on the other side of the room next to each other.  The second pair made a hugh difference.  Much fuller.

As far as placement goes, I just moved them around till they sounded good.  Although, the difference is more imagined than actual.  Around 11" with a slight (5 degree angle) is where I ended up.  The wall material makes more of a difference.  For example wood paneling verses drywall.  They still sound like new today even with the replacement mid-range speakers.  I was able to find a local store at the time that was able to match the original ones.
Ed.Kloonk:

--- Quote from: MarkF on March 09, 2022, 12:18:08 pm ---
--- Quote from: Ed.Kloonk on March 09, 2022, 09:28:17 am ---
--- Quote from: MarkF on March 07, 2022, 08:53:59 am ---I have a set of Polk Model Nine floor speakers from the late 1970's.


--- End quote ---
Good 'ole Polk.

Starting to warm up to either Polk S20 or the R200. Can't make my mind up about which tweeter. I believe if I can give them a bit of clearance from the wall and be prepared to adjust it a bit, the rear port's OK. But we still call them 'book-shelf' speakers.  :-\

Still gotta do a few more calcs to figure placement/separation etc. Rough sums a few days ago indicated that the newly mounted 2nd monitor has to go and have a more normal side by side dual monitor setup. Booo.  :(

--- End quote ---

I bought my Polk's when I was in college.  There were two stereo stores in town about two blocks apart.  One had the Bose 901 and the other the Polk Model Nine.  I would go in one store and listen for a while, then run up the street and listen to the others for comparison.  Price one out.

--- End quote ---

Gotta ask. Did the 901's come with that [essential?] active eq in those days?
MarkF:
I don't remember the Bose EQ at all.  Is this what you are talking about?

At quick Google search:


"The EQ Box and The Moment of Truth

Because the Bose 901 makes use of nine full-range drivers, it takes advantage of an inline equalizer to make the speakers sound the way they are intended. Traditionalists, before you cry foul, think of the popularity of DSP-based speakers these days. Bose achieves a similar, if less sophisticated and considerably less-expensive effect with a passive EQ.  The manual states the EQ can be used with series V 901s, but earlier models require the proper box.

If you are using a receiver, the EQ must be placed in a tape-monitor circuit, or between amp and preamp if you have separates. The supplied pair of three-foot RCA patch cords gets the ball rolling. The EQ features a two-position button: position one offering a flatter response, and position two adding a slight bass bump, not unlike the loudness button on a 70s receiver. Finally, there are two sliding controls for mid-bass and mid-treble, the latter claiming the most control over the overall tonal balance."
Ed.Kloonk:

--- Quote from: MarkF on March 11, 2022, 11:21:50 am ---I don't remember the Bose EQ at all.  Is this what you are talking about?

--- End quote ---

I wonder if the EQ was snake oil. Of was the 901 just a glorified mid-range speaker.

Found this:

--- Quote ---You can use the Bose without the EQ but they won't sound as they are supposed to.
If you can't find the Bose EQ for your series 901 then get any graphic equalizer and adjust the sound to your taste. Add bass from about 60hz down. Add high frequencies to taste. Boosting more than 3-6db isn't a great idea.   :palm:
To use any EQ you will need a way to connect it. Most AVRs will not have a place for you to do that.
--- End quote ---
https://forums.tomsguide.com/threads/bose-901-equalizer-needed.445482/

Plot thickens.
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