The 12 Most Significant Loudspeakers of All Time

My top 10 list, most of which I have owned or still do. I’m going chronologically in time, so ordering is not by quality. All are timeless classics in their own way.

1. Klipschorn: Paul Klipsch to me remains the greatest American speaker designer. It’s no accident the Klipschorn is still being produced 70 years running. It’s a marvelous solution to many problems, including positioning (corner room placement is so brilliant and so ahead of its time that when I see ginormous speakers in TAS and Stereophile that have to be placed 5 feet in front of a wall, I have to refrain from bursting out laughing). Plus you only need a 2-3 watt SET to drive them comfortably. Distortion wise, there’s not much that compares to them even today. The new Jubilees are what I would buy if I had the space. I own the La Scalas, which I just bought last year. Similar design. With the right SET, they do everything I want in a speaker. They look nice too. The latest wood finishes and fabric are tastefully done. Build quality has hugely improved over previous La Scalas. They weigh 200 pounds each, but I use a simple 3 watt SET with a single Western Electric 421a power tube for both channels. The 421a is the sleeper NOS that no one knows about. In my system, it stomps all over a 300B SET that uses the WE 300Bs.

2. Quad ESL: Peter Walker is the other great speaker designer across “the pond”. Built and released in 1957, almost as old as the KHorn, but sadly not produced anymore. Still, tens of thousands still use the 57s as a reference. My pair were made in the 1970s. The most reliable Quad ever made. As long as you don’t overdrive them, they last forever. If you don’t believe me, ask Kent of Electrostatic Solutions, who’s refurbished more Quads than anyone in the US.

3. Quad ESL 63: Peter Walker was never happy with any of his designs. When asked about his famous 57, he refreshingly replied: “oh, no, we think it’s a terrible speaker, but it’s better than almost anything else!” He took 18 years to perfect his delay line solution to controlling directivity. I have owned more 63s than anything else. I currently have the 2805 and the 2905. Both sound different and have relative strengths and disadvantages. Quad 63s sadly are not reliable. They are a pain to fix. I won’t buy another Quad, but I’m happy to listen to mine.

4. Spendor SP-1: TAS’ REG loves these and for good reason. They get the midrange right in many ways, but compared to the La Scalas I own, they have little dynamic range. I own the SP 1/2E and use it in my home theater, where its mellow sound makes bright film soundtracks listenable. They are not too large, which in a box loudspeaker is a good thing. As a PhD student in the mid 1980s, I owned the original SP-1s, which were even more lovely thanks to the fabric Celestion tweeter.

5. Harbeth Monitor 40: massively overrated loudspeaker, but I’ll include it since I owned two pairs. The original Monitor 40, which I bought used in 2002 for a measly $2500 was a horrendous design, praised by REG, but produced these giant +20 dB bass humps in my large listening room. The original 40s used the slot woofer (which has returned in some recent BBC inspired designs). Alan Shaw was trying to copy the bass hump in the original BBC model to sell more Monitor 40s to the Beeb. I now own the Monitor 40.1s, which have a much more balanced sound. I consider the 40s far poorer to the Spendor SP-1. The 40s have a tendency to glare. The crossover design is not very good. The three drivers do not sound coherent to my ears. My 40.1s are in my kitchen pantry now. The new models sell for almost 30 grand. Grand larceny to me.

6. B&W 800/Diamond: Massively built and quite neutral sounding. Need a very high powered amplifier to make them come alive. The original 800 was one of the flattest sounding designs. The newer models have a pronounced treble peak. It can play loudly and do a reasonable job on orchestral music without overloading. In terms of dollar value, these were a bargain. The Marlan head housing the midrange and tweeter itself weighed almost 100 pounds. I don’t know how B&W made any money selling these.

7. Magneplanar 3.6s: America’s answer to the Quad. Very colored compared to Quads, but could be driven to much louder volumes. I drove them with a Krell 700cx, and they could take pretty much any power I played them at. They sounded better at high decibels. Strangely, the speaker was less fatiguing at high volumes than low volumes (Fletcher Munson effect perhaps). Absolute bargain for the money.

8. Devialet Phantom Gold: the first truly 21st century loudspeaker. Built in 5000 watt class A/D amp with DAC and streamer. Can produce a shocking 110 dB at 14 Hz at low distortion. The Devialet team that designed them included experts in explosives to model the shock waves inside the compact eggshell shape. Open one up and it doesn’t look like a speaker. Hardly a wire in sight. Groundbreaking design in every way. I got a pair for my spouse who listens to it everyday. I must admit my 5“ tall 2905 Quads looks a bit silly next to the diminutive Phantoms, much like the old medium format cameras that you had to look into with a cloth over your head and your assistant used a flash to get a picture.

9. Gradient 1.4 Helsinki: Queer looking open baffle design, but set up right produces the best illusion of stereo I have ever heard. Your room disappears. Cannily designed to minimize first reflections. Jorma Salmi who designed them was a genius, sadly he’s no more. My Gradients are in my bedroom driven by a pair of $200 professional Crown amplifiers as my pair used 4-pole Speakon connectors. They sound like nothing else I have heard, but many find them lean because they don’t have that hump in the mid bass everyone craves.

10. To be filled by X: truth be told, I agree with Peter Walker. Loudspeakers by and large are terribly nonlinear. Distortion levels are way too high. Even the best professional loudspeakers can barely resolve 8 bits of information in the bass. Here is the distortion level of the $30,000 JBL M2, one of their most widely used professional loudspeakers. What a joke! Look at how bad the distortion is.What’s the point of 24-bit high res if loudspeakers are so poor?

1677986656112.png
 
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I don’t know, I see here that it’s 50/50 love hate relationship with the Klipschorns, well, in my neck of the woods it seems 100% really enjoy listening to my circa 1978 Klipschorns. I ask them be truthful, I can handle the criticisms if you have them. I have to admit, they do sound spectacular.
 
With loudspeakers more than any other component, it seems to come down to personal preference. It’s really hard to design loudspeakers that cater to all tastes. Some folks like to listen to Metallica at 120 dB for relaxation. They care not a whit about distortion or imaging. They want LOUD. Others are bass freaks. They insist if a speaker cannot reproduce a pipe organ at 100+ db, even if they never listen to organ music, the loudspeaker is no good. I’m in the camp of those who believe a loudspeaker is only as good as its midrange, as that’s where 99% of music lives. There’s no pleasing everyone. Much like no one restaurant could possibly satisfy all tastes. Sine folks love to have fast food burgers. Others like pasta or salad. You can’t please everyone. So, you choose the loudspeakers you can live with. After all, it’s your money and in the end, your opinion is the only one that matters to you.
 
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I bought my lifetime speakers in 1985, QUAD ESL-63s. Of course I didn’t know they’d turn out to be my lifetime speakers, but to give you an idea of how much they mean to me, I’ll often say half jokingly that I want my Quads to be buried with me.

Fate brought them to my attention in the first place purely by accident. I came across a copy of Opera News while waiting for my appointment at the doctor. Inside was an article that insisted that the Quad ESL-63s were the perfect speakers for opera lovers. I was a passionate opera lover so I headed for the local high end store and was immediately dismayed to find them so expensive, around $3000/pr in 1985. I wound up phoning Quad from my home in California hoping to locate a dealer in England. I had to subject Quad to considerable arm twisting to get some dealer names out of them because it turned out that Quads in England were selling for less than half the price they sold for in the US and I guess Quad didn’t want to own up to that major discrepancy in pricing. I did eventually buy my Quads from a London dealer and also bought an amp and a preamp and an FM player for less than the cost of the speakers alone in the US. IN 2017 I had them rebuilt and in 2022 I caught a good deal on Quad US Monitors, just completely restored, and I bought them.

I’m still a passionate opera lover and classical music listener and I plan to keep my Quads forever because they are the perfect speakers for my musical tastes.
 
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With loudspeakers more than any other component, it seems to come down to personal preference. It’s really hard to design loudspeakers that cater to all tastes. Some folks like to listen to Metallica at 120 dB for relaxation. They care not a whit about distortion or imaging. They want LOUD. Others are bass freaks. They insist if a speaker cannot reproduce a pipe organ at 100+ db, even if they never listen to organ music, the loudspeaker is no good. I’m in the camp of those who believe a loudspeaker is only as good as its midrange, as that’s where 99% of music lives. There’s no pleasing everyone. Much like no one restaurant could possibly satisfy all tastes. Sine folks love to have fast food burgers. Others like pasta or salad. You can’t please everyone. So, you choose the loudspeakers you can live with. After all, it’s your money and in the end, your opinion is the only one that matters to you.
Im in the camp where bass / treble affects timbre and hence the midrange , no one part should stand out or be better than the whole ..!

The recording should dictate …!

Then again , some are into pipe and slippers sound , so to each their own , i’m good with that too …!

Enjoy!

PS: At today prices all sota speakers should be able to do it all , Metallica and pipe organs , those not able to , should have the designer(s) quartered …!

:)
 
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My top 10 list, most of which I have owned or still do. I’m going chronologically in time, so ordering is not by quality. All are timeless classics in their own way.

1. Klipschorn: Paul Klipsch to me remains the greatest American speaker designer. It’s no accident the Klipschorn is still being produced 70 years running. It’s a marvelous solution to many problems, including positioning (corner room placement is so brilliant and so ahead of its time that when I see ginormous speakers in TAS and Stereophile that have to be placed 5 feet in front of a wall, I have to refrain from bursting out laughing). Plus you only need a 2-3 watt SET to drive them comfortably. Distortion wise, there’s not much that compares to them even today. The new Jubilees are what I would buy if I had the space. I own the La Scalas, which I just bought last year. Similar design. With the right SET, they do everything I want in a speaker. They look nice too. The latest wood finishes and fabric are tastefully done. Build quality has hugely improved over previous La Scalas. They weigh 200 pounds each, but I use a simple 3 watt SET with a single Western Electric 421a power tube for both channels. The 421a is the sleeper NOS that no one knows about. In my system, it stomps all over a 300B SET that uses the WE 300Bs.

2. Quad ESL: Peter Walker is the other great speaker designer across “the pond”. Built and released in 1957, almost as old as the KHorn, but sadly not produced anymore. Still, tens of thousands still use the 57s as a reference. My pair were made in the 1970s. The most reliable Quad ever made. As long as you don’t overdrive them, they last forever. If you don’t believe me, ask Kent of Electrostatic Solutions, who’s refurbished more Quads than anyone in the US.

3. Quad ESL 63: Peter Walker was never happy with any of his designs. When asked about his famous 57, he refreshingly replied: “oh, no, we think it’s a terrible speaker, but it’s better than almost anything else!” He took 18 years to perfect his delay line solution to controlling directivity. I have owned more 63s than anything else. I currently have the 2805 and the 2905. Both sound different and have relative strengths and disadvantages. Quad 63s sadly are not reliable. They are a pain to fix. I won’t buy another Quad, but I’m happy to listen to mine.

4. Spendor SP-1: TAS’ REG loves these and for good reason. They get the midrange right in many ways, but compared to the La Scalas I own, they have little dynamic range. I own the SP 1/2E and use it in my home theater, where its mellow sound makes bright film soundtracks listenable. They are not too large, which in a box loudspeaker is a good thing. As a PhD student in the mid 1980s, I owned the original SP-1s, which were even more lovely thanks to the fabric Celestion tweeter.

5. Harbeth Monitor 40: massively overrated loudspeaker, but I’ll include it since I owned two pairs. The original Monitor 40, which I bought used in 2002 for a measly $2500 was a horrendous design, praised by REG, but produced these giant +20 dB bass humps in my large listening room. The original 40s used the slot woofer (which has returned in some recent BBC inspired designs). Alan Shaw was trying to copy the bass hump in the original BBC model to sell more Monitor 40s to the Beeb. I now own the Monitor 40.1s, which have a much more balanced sound. I consider the 40s far poorer to the Spendor SP-1. The 40s have a tendency to glare. The crossover design is not very good. The three drivers do not sound coherent to my ears. My 40.1s are in my kitchen pantry now. The new models sell for almost 30 grand. Grand larceny to me.

6. B&W 800/Diamond: Massively built and quite neutral sounding. Need a very high powered amplifier to make them come alive. The original 800 was one of the flattest sounding designs. The newer models have a pronounced treble peak. It can play loudly and do a reasonable job on orchestral music without overloading. In terms of dollar value, these were a bargain. The Marlan head housing the midrange and tweeter itself weighed almost 100 pounds. I don’t know how B&W made any money selling these.

7. Magneplanar 3.6s: America’s answer to the Quad. Very colored compared to Quads, but could be driven to much louder volumes. I drove them with a Krell 700cx, and they could take pretty much any power I played them at. They sounded better at high decibels. Strangely, the speaker was less fatiguing at high volumes than low volumes (Fletcher Munson effect perhaps). Absolute bargain for the money.

8. Devialet Phantom Gold: the first truly 21st century loudspeaker. Built in 5000 watt class A/D amp with DAC and streamer. Can produce a shocking 110 dB at 14 Hz at low distortion. The Devialet team that designed them included experts in explosives to model the shock waves inside the compact eggshell shape. Open one up and it doesn’t look like a speaker. Hardly a wire in sight. Groundbreaking design in every way. I got a pair for my spouse who listens to it everyday. I must admit my 5“ tall 2905 Quads looks a bit silly next to the diminutive Phantoms, much like the old medium format cameras that you had to look into with a cloth over your head and your assistant used a flash to get a picture.

9. Gradient 1.4 Helsinki: Queer looking open baffle design, but set up right produces the best illusion of stereo I have ever heard. Your room disappears. Cannily designed to minimize first reflections. Jorma Salmi who designed them was a genius, sadly he’s no more. My Gradients are in my bedroom driven by a pair of $200 professional Crown amplifiers as my pair used 4-pole Speakon connectors. They sound like nothing else I have heard, but many find them lean because they don’t have that hump in the mid bass everyone craves.

10. To be filled by X: truth be told, I agree with Peter Walker. Loudspeakers by and large are terribly nonlinear. Distortion levels are way too high. Even the best professional loudspeakers can barely resolve 8 bits of information in the bass. Here is the distortion level of the $30,000 JBL M2, one of their most widely used professional loudspeakers. What a joke! Look at how bad the distortion is.What’s the point of 24-bit high res if loudspeakers are so poor?

View attachment 105542
Mostly agreeable excepting for spendor and Harbeth …!

The JBL M2 is a 2 way design , distortion will be high as they will limit xmax on the woofer due to a high xover point …
 
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@Echolane, I have Quad ESL 63(USA monitor) for about 25 years and ESL 57 I purchased in 1975 from a London dealer. If you ever want more low bass multi-subs on DSP (no DSP for mains) is a possible route. PM me if you want details.
 
One important category of speaker has largely been left out of this entire discussion. That is the category of boundary placement speakers: speakers intended to be placed against at least one room boundary--say the wall behind them--or at the junction of two boundaries, e.g., that wall and floor, or the junction of three boundaries--in a room corner.

Yes, I suppose corner horn speakers like the Klipschorn are an example of this group. But unlike most of the others, the K-Horn and other corner-horn speakers really do not deal well with the very strong early-in-time room reflections which accompany such positioning. This failure is the major cause of the high-frequency stridency K-Horn detractors note.

The list of successful boundary placement speakers is short. To get an idea of which speakers are on this list, read Robert E. Greene's (REG) reviews of the Larsen Model 8 and Larsen Model 9 loudspeakers in The Absolute Sound. He mentions Sonab, Allison, Steinway/Lyngdorf, Tact, and Larsen.

Perhaps the list of successful boundary placement speakers should not be so short. As REG notes, this sort of speaker represents a sort of "road not taken" in high-end audio loudspeaker design. He notes:

"This creates a challenging situation for a design that works in a way different from the, by now, ensconced forward-radiating box with directivity increasing with increasing frequency that has somehow become a “standard,” whether it should have or not. And such a design as the Larsen Model 9—this is something different. It is also something good. Very good, indeed."

My next speakers, which I hope to hook up today, are the Larsen Model 9.
 
I think that the Linn Isoberik speaker lineage should be part of any boundary placement speaker discussion as well as iconic, imo.
At the time (early 70’s) Linn thought that any speaker designed to be placed into the room was a fool’s errand.
Fond memories with my stack of Naim amps.
 
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They have somehow left out the Lansing Iconic, which is probably the most important design in the history of loudspeakers. It sets the precedence for a two way design, and its design principles governed pretty much all studio monitors up to now. Almost all electrically recorded music was produced using monitors of this design. Its 15" driver broke new ground in woofer design, and likewise, the compression driver also points the way for the subsequent development of this type of driver.
 

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