MoFi Sourcepoint V10 Master Edition

[MattHooper]

Is this his new speaker?

View attachment 517978

Interesting. If it is, I don’t know if I’m digging the design. And it certainly looks like a very niche product.

 

[Paffi]

Looks like a crossover of Cadentia 3 and Sourcepoint 10

 

[MattHooper]

Looks like a crossover of Cadentia 3 and Sourcepoint 10

It actually looks very much like the type of speakers A.I. makes up.

 

[MGJ]

Here is the link for the video where he talks about his new company:

Jones and Cerreta

 

[MattHooper]

Here is the link for the video where he talks about his new company:

Jones and Cerreta

Interesting.

What is the relevance of AJ pointing out it uses concentric field coils?

 

[mhardy6647]

Ah, right. If I brighten the image and zoom in it looks pretty much like this driver:

View attachment 517853

So I’m guessing that speaker was probably home made where somebody just incorporated that driver into those cabinets?
(and the speakers in the photo have casters on the bottom, which speaks more to DIY).

I wouldn’t imagine AJ would simply use those old drivers in his new design.

Yes, either 'bespoke' cabinets (unfamiliar ones to me) -- or AI. Unfortunately, AI is always an option.

As an aside, the image @MattHooper posted above is a truly lovely pair of either original Altec 604 (unsuffixed) or 604B Duplexes -- probably the latter.


The 604 and 604B differ from later variants in the design of the treble horn. In those two versions, the horn is a true, albeit rather miniaturized, multisectoral horn. Starting with the 604C and at least up to the fairly modern (it's all relative) 604-8G, the horn was a) physically smaller and b) not multisector along its entire length.

As a further aside, the original 604 dates to ca. 1943 and the 604B to at least the very early 1950s 1949.

source: https://lansingheritage.org/html/altec/catalogs/1943.htm

source: https://lansingheritage.org/html/altec/catalogs/1949.htm

As a further and even less worthwhile aside -- yes, I do have a pair of 604B Duplexes (as well as a pair of 604E). They're in reasonable condition functionally, but not nearly as gorgeous at those in @MattHooper's photo.

 

[MattHooper]

Yes, either 'bespoke' cabinets (unfamiliar ones to me) -- or AI. Unfortunately, AI is always an option.

View attachment 518033
As an aside, the image @MattHooper posted above is a truly lovely pair of either original Altec 604 (unsuffixed) or 604B Duplexes -- probably the latter.


The 604 and 604B differ from later variants in the design of the treble horn. In those two versions, the horn is a true, albeit rather miniaturized, multisectoral horn. Starting with the 604C and at least up to the fairly modern (it's all relative) 604-8G, the horn was a) physically smaller and b) not multisector along its entire length.

View attachment 518032
As a further aside, the original 604 dates to ca. 1943 and the 604B to at least the very early 1950s 1949.

View attachment 518034
source: https://lansingheritage.org/html/altec/catalogs/1943.htm
View attachment 518036
source: https://lansingheritage.org/html/altec/catalogs/1949.htm

As a further and even less worthwhile aside -- yes, I do have a pair of 604B Duplexes (as well as a pair of 604E). They're in reasonable condition functionally, but not nearly as gorgeous at those in @MattHooper's photo.

I’ve still never heard any of the Altec driver speakers. i’d really love to.

 

[Matt_Holland]

Looks like a crossover of Cadentia 3 and Sourcepoint 10

Yet not as good looking as either.

 

[kharan]

Looks like a crossover of Cadentia 3 and Sourcepoint 10

More reminiscent of TAD tbh, like their shorter, rounder sibling.

 

[Matt_Holland]

Interesting.

What is the relevance of AJ pointing out it uses concentric field coils?

It’s a very unique feature, no?

 

[MattHooper]

It’s a very unique feature, no?

I don’t know. I don’t know enough about speaker design to understand the relevance or implications of field coils . That’s why I’m asking about it.

 

[Matt_Holland]

I don’t know. I don’t know enough about speaker design to understand the relevance or implications of field coils . That’s why I’m asking about it.

I did a quick google and it is an old technology used before permanent magnets were readily available at sufficient strength.

I need to dig more but it looks like only purveyors of snake oil are using the technology nowadays.

The cynic in me wonders if AJ is using his deservedly excellent reputation to create a hype around an old technology, applied in a novel way (concentric) to appeal to some audiophiles searching for what they’ve been missing all their life.

Will be interesting to see what the data says and what AJ says are the performance benefits.

 

[MattHooper]

I did a quick google and it is an old technology used before permanent magnets were readily available at sufficient strength.

I need to dig more but it looks like only purveyors of snake oil are using the technology nowadays.

The cynic in me wonders if AJ is using his deservedly excellent reputation to create a hype around an old technology, applied in a novel way (concentric) to appeal to some audiophiles searching for what they’ve been missing all their life.

Will be interesting to see what the data says and what AJ says are the performance benefits.

Agreed.

In my case I’m happy to see AJ branching out and thinking outside of the box. Not another cookie cutter speaker. There’s always KEF who have a model to suit just about any “best practices loving” audiophile. Interesting to see other ways to skin the cat.

 

[Everett T]

I've never heard a Hi-Fi speaker using them but did hear a couple of old radios. Some user comments on them

Field-coil drivers, pros and cons. Relics of the past, or still relevant?

I've been thinking about so called Field-Coil speaker drivers lately. Or "electromagnet drivers" as some seem to label them. Do they have any technical benefits that make them worth the extra expense and trouble? Nearly all info I can find online is vague mentionings of their superior "sound"...

www.audiosciencereview.com

 

[Marin]

I noticed that Andrew likes to cross 3 way design very low,for example mine first edition F5 are crossed at 100hz.
This one 130hz.
I personally think it's because he wants to keep that important frequency range where voices and all the fundamental tones reside,in same time domein free from any crossovers and all bad things that carries with it like change of polarity, possible dips in the frequency response,....
Also when I listen to mine It seems like all the tones are coming from the middle driver's like proper point source.
I would like what do you guys think?

 

[Matt_Holland]

I noticed that Andrew likes to cross 3 way design very low,for example mine first edition F5 are crossed at 100hz.
This one 130hz.
I personally think it's because he wants to keep that important frequency range where voices and all the fundamental tones reside,in same time domein free from any crossovers and all bad things that carries with it like change of polarity, possible dips in the frequency response,....
Also when I listen to mine It seems like all the tones are coming from the middle driver's like proper point source.
I would like what do you guys think?

Makes sense. Valid design choice.

Waiting to see what benefits the field coils give though.

 

[Marin]

I've always been a sucker for big, brawny tower speakers. I kept my Legacy Audio Signature II towers for about 20 years. They had their problems, but they did have that big, open sound, as well as powerful deep male vocals from singers like Leonard Cohen.

Yes I don't have these speakers, but I have a pretty cheap 3 way design tuned-voiced buy his taste and when I listen to "You what it darker", well i won't say any audiophile bullshit, but I'm getting tingles.

 

[Everett T]

I noticed that Andrew likes to cross 3 way design very low,for example mine first edition F5 are crossed at 100hz.
This one 130hz.
I personally think it's because he wants to keep that important frequency range where voices and all the fundamental tones reside,in same time domein free from any crossovers and all bad things that carries with it like change of polarity, possible dips in the frequency response,....
Also when I listen to mine It seems like all the tones are coming from the middle driver's like proper point source.
I would like what do you guys think?

There is a school of thought that crossing over to the woofer should occur between 300 and 600hz to avoid the mid woofer playing down into the power powerband where many (not all) mid woofers can get uncomfortable, ie KEF. Just a note..

 

[mhardy6647]

I’ve still never heard any of the Altec driver speakers. i’d really love to.

c'mon by! We'll leave the light on for ya.

 

[mhardy6647]

I know a fellow who runs a truly amazing three-way system anchored by a set of eight very, very vintage 15" RCA field coil woofers in a quad of RCA's MI-9462 horn enclosures, topped by large multi-sectoral RCA horns loaded with RCA field coil drivers, and surprisingly modern Gauss tweeters. Measured flat from 20 to 20k in their purpose-built room (which is very large), too. Probably the best audio reproduction I've ever heard... not exactly practical, though.