MoFi SourcePoint 888 Review and Measurements by Erin

[Richard G]

Thank you, that’s probably the most insightful review I’ve ever read of a pair of speakers
And I’ve been reading them on and off since 1978

to me it helps confirm the 888s as the best passive speakers at their price - the most enjoyable

Cheers

 

[Penelinfi]

idk if that "confirms" it, as there are a lot of speakers out there that a single person hasn't compared 888 to

 

[amper42]

idk if that "confirms" it, as there are a lot of speakers out there that a single person hasn't compared 888 to

I would enjoy AB testing the SourcePoint V10 Master Edition against the Revel F328Be.

 

[Richard G]

idk if that "confirms" it, as there are a lot of speakers out there that a single person hasn't compared 888 to

Possibly too strong a word. But at that price level several reviewers have I believe heard the best contenders among manufactured passive speakers

Active and especially DIY you could definitely do better.

 

[jhaider]

I would enjoy AB testing the SourcePoint V10 Master Edition against the Revel F328Be.

One of the pleasant surprises in listening to the V10 at Axpona (I snagged the money seat) was that it threw images outside the outer edges of the speakers. Most large coaxes are much narrower, and can’t pull that off. After the demo I spoke to Andrew a bit about that.

I bet Revel will still be a touch more spacious overall, but it’ll be close.

 

[Richard G]

One of the pleasant surprises in listening to the V10 at Axpona (I snagged the money seat) was that it threw images outside the outer edges of the speakers. Most large coaxes are much narrower, and can’t pull that off. After the demo I spoke to Andrew a bit about that.

I bet Revel will still be a touch more spacious overall, but it’ll be close.

What features of the drivers or baffles did Andrew attribute the wide images to? (Wider than the three pre-existing models?)

Cheers

 

[jhaider]

What features of the drivers or baffles did Andrew attribute the wide images to? (Wider than the three pre-existing models?)

Cheers

I didn’t hear the others in the same context - they may do the same thing. He talked about how their directivity was wider than typical for a large coax and the low tweeter crossover (though I don’t really buy the latter as a factor - Tannoy 10 DMT II has a similarly low or lower tweeter for example, and I’ve never had luck with those imaging outside the outer edges of the speakers).

 

[ta240]

Yes, the cosmetic appeal of any design is highly subjective. IMO, the cabinets look quite handsome in the pics - furniture grade veneer that isn't plastered over with gobs of shiny polyurethane. They have an old-school chunkiness to them that I also like - they have real heft and look it!

I agree, while they don't say 'high dollar', I appreciate the subtlety.

 

[Richard G]

I didn’t hear the others in the same context - they may do the same thing. He talked about how their directivity was wider than typical for a large coax and the low tweeter crossover (though I don’t really buy the latter as a factor - Tannoy 10 DMT II has a similarly low or lower tweeter for example, and I’ve never had luck with those imaging outside the outer edges of the speakers).

Bringing the frequency that the tweeter cuts in would give much wider dispersion … though of course only over the frequency range where it’s instead of an 8 inch driver. The 888 crosses mid to tweet 1.6 kHz. But that is a pretty typical crossover frequency for an 8-inch … so no purchase from me either

I think the biggest variable may be the shape of the cone.

 

[cavedriver]

I didn’t hear the others in the same context - they may do the same thing. He talked about how their directivity was wider than typical for a large coax and the low tweeter crossover (though I don’t really buy the latter as a factor - Tannoy 10 DMT II has a similarly low or lower tweeter for example, and I’ve never had luck with those imaging outside the outer edges of the speakers).

fwiw don't the Tannoy's use a tweeter that is behind the woofer magnet and project through a small diameter cone (the "tulip cone" that Fyne also uses? Perhaps the shallow placement of the Mofi tweeters and the shape of the cone combine to improve the width. I believe we're lacking Tannoy or Fyne Klippel data so a paper comparison is hard.

I would enjoy AB testing the SourcePoint V10 Master Edition against the Revel F328Be.

If the V10's come in a bit lower on price, like $7500~8500, the comparison would be to the F228Be, but of course any of us in our right mind would be comparing them to the 328's in case the Revel's can beat them up and down the street, or vice versa. Having heard the SP10 and the 328, I'm betting the tweeter on the Revel's will continue to sound sweeter and smoother than the rather "crisp" and "clear" tweeter on the Mofi's, but with a new crossover the behavior of the Mofi's may change in perceived character.

 

[Penelinfi]

fwiw don't the Tannoy's use a tweeter that is behind the woofer magnet and project through a small diameter cone (the "tulip cone" that Fyne also uses? Perhaps the shallow placement of the Mofi tweeters and the shape of the cone combine to improve the width. I believe we're lacking Tannoy or Fyne Klippel data so a paper comparison is hard.

If the V10's come in a bit lower on price, like $7500~8500, the comparison would be to the F228Be, but of course any of us in our right mind would be comparing them to the 328's in case the Revel's can beat them up and down the street, or vice versa. Having heard the SP10 and the 328, I'm betting the tweeter on the Revel's will continue to sound sweeter and smoother than the rather "crisp" and "clear" tweeter on the Mofi's, but with a new crossover the behavior of the Mofi's may change in perceived character.

F228be - $19k
F328be - $30k

SP888 - $11k

I'm guessing the v10 is not going to be 3x the price

 

[amper42]

F228be - $19k
F328be - $30k

SP888 - $11k

I'm guessing the v10 is not going to be 3x the price

The F228Be was $6,000 on sale lately and the F328Be around 11,000.
If anyone is actually paying retail for Revel 228/328be I'm happy to sell them mine.

 

[cavedriver]

F228be - $19k
F328be - $30k

SP888 - $11k

I'm guessing the v10 is not going to be 3x the price

Did Revel up their prices?? The F328Be list as of a couple months ago was $17,600.

 

[amper42]

Did Revel up their prices?? The F328Be list as of a couple months ago was $17,600.

No, Revel has been been running huge discounts quarterly. A good dealer can usually sweeten the deal even more. When you buy them on sale they offer a nice value.

 

[Penelinfi]

Just one display model f328be for $20k. In boring black

 

[cavedriver]

Just one display model f328be for $20k. In boring black

are you maybe working in Canadian Dollars or something? The list price on the Revel's is well documented and they are in stock all day long at numerous dealers, and as Amper pointed out they have been on sale again lately, although not in the walnut color that I prefer. Here they are on sale and in stock at Crutchfield for $13,600 a pair in the block gloss finish:

https://www.crutchfield.com/p_265F328BEB/Revel-PerformaBe-F328Be-High-Gloss-Black.html?tp=185

 

[Penelinfi]

This might be the blockage we are running into

 

[jhaider]

fwiw don't the Tannoy's use a tweeter that is behind the woofer magnet and project through a small diameter cone (the "tulip cone" that Fyne also uses? Perhaps the shallow placement of the Mofi tweeters and the shape of the cone combine to improve the width. I believe we're lacking Tannoy or Fyne Klippel data so a paper comparison is hard.

Not Klippel data, but here's some dumb amateur's attempt to characterize a a then-new (almost a decade ago) Tannoy tower with 8" coax and compare to an older-design Tannoy studio monitor with same, including polar maps.

https://hometheaterhifi.com/reviews...olution-xt-8f-floor-standing-speakers-review/

I'm betting the tweeter on the Revel's will continue to sound sweeter and smoother than the rather "crisp" and "clear" tweeter on the Mofi's, but with a new crossover the behavior of the Mofi's may change in perceived character.

The new crossover, IMO, transforms the treble. I heard a set of SP10s at the same show. It sounded raspy to me. Just like it did last year. The V10's treble is much improved.

 

[sigbergaudio]

fwiw don't the Tannoy's use a tweeter that is behind the woofer magnet and project through a small diameter cone (the "tulip cone" that Fyne also uses? Perhaps the shallow placement of the Mofi tweeters and the shape of the cone combine to improve the width. I believe we're lacking Tannoy or Fyne Klippel data so a paper comparison is hard.

We use a horn similar to Tannoy or Fyne in our newest speaker and it has a very wide soundstage, so that's not it.

Also with regards to dispersion if interesting (note that these are driver measurements not speaker measurements, and also that the colors vs SPL isn't identical, so you need to think a little bit to compare):

8" with compression driver and horn:

5.5" coaxial with soft dome and "only" using the driver as waveguide:

 

[kyuu]

The new crossover, IMO, transforms the treble. I heard a set of SP10s at the same show. It sounded raspy to me. Just like it did last year. The V10's treble is much improved.

I'm curious what in the crossover could result in a less "raspy" treble. At least from what measurements we have, I can see two potential issues in the treble with the SP10. First is relatively high multitone distortion in the treble area:

Second is what looks like diffraction issues in the treble area on the contour plot:

Diffraction doesn't seem like something that could be addressed by the crossover, but perhaps the MD could? Or is there something else? It also has a bit of a rising treble response, so might sound somewhat bright. Dunno about "raspy" though.