Jensen folded horn with Audio Nirvana Classic 15 alnico?

[Tubenstein]

Hello!
This is the plan supposed for Jensen horn speaker with G610.

What do you think having Audio Nirvana Classic 15 alnico with this cabinet?

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Thanks!

 

[woody]

With a QTS of .98 I don't think it will like a horn at all. It looks like that driver was made for use on an open baffle.

 

[Scottmoose]

What was said above. Not with a Q of nearly 1.0 and a 13.56ft^3 Vas. Even a big horn like the Imperial isn't going to be large enough for quality performance. Same arguments (more so) for the Super 15 AlNiCo.

 

[Tubenstein]

What was said above. Not with a Q of nearly 1.0 and a 13.56ft^3 Vas. Even a big horn like the Imperial isn't going to be large enough for quality performance. Same arguments (more so) for the Super 15 AlNiCo.

Therefore, what would happen if having the classic 15 alnico on the Jenson folded horn cabinet? What will be getting affected due to the high qts?

 

[Tubenstein]

What about modified this cabinet to fit the Classic 15 alnico as the horn cabinet is much larger?

Sub-Woofer

 

[freddi]

(indicated to you that it has a weak motor at the asylum) - do you really want something twice the size of a refrigerator, large panels to brace, high driver cost with poor dynamics and a response as so? maybe its the most wonderful thing ever on an open baffle

 

[Scottmoose]

Therefore, what would happen if having the classic 15 alnico on the Jenson folded horn cabinet? What will be getting affected due to the high qts?

What Freddi shows. Large underdamped peaking in the mid - upper bass, limited output in the lower regions (< 100Hz). Dodgy sound, lots of complexity for not a lot of point.

What about modified this cabinet to fit the Classic 15 alnico as the horn cabinet is much larger?

Leaving aside off-axis radiation & various other practical considerations, it would be marginally better in alignment terms. Marginally. As in how some parts of the RMS Titanic are marginally less underwater than others. But this is not a driver that either benefits from or requires a back horn. It has a mass corner frequency of only 64.28Hz not including any series R present in the circuit.

 

[GM]

FWIW, 'gapping' [air leak between driver, baffle] a high Qt driver to 'bleed' off its 'Q-ness' can work, sometimes with/without damping material in the gap, though unless AkAbak can sim it, tuning is strictly empirically derived. Bruce Edgar did it on one of his FLH designs IIRC.

Designed from scratch, Klipsch Rebel concepts work well if there's some well constructed corners or even the DIY ones designed for the Klipschorn if a higher cutoff is acceptable.

GM

 

[Tubenstein]

What about this one?

Radian Audio 5215BeNeo Lightweight neodymium Beryllium Diaphragm Coaxial Speakers - Radian 15" coaxial speakers with a lightweight neodymium magnet. Radian 5215Neo coaxial speaker consists of a 15" woofer and a 2" high frequency driver with a lightwe

 

[freddi]

assuming JAG's model is ballpark and other than the horrific price for the Radian, the Radian CX parameters are a step in the right direction

2.83V 1Pi

for sensitivity comparison, here's a simulation of my little midbass horn with a $50 driver
plus Klipsch La Scala with K33

2.83V 1 Pi

 

[Tubenstein]

I think the Radiant drive unit is seriously made with very low Qts.

I guess it should sound better than the vintage Jensen G610.

 

[freddi]

True - but there have been serviceable 15CX for a lot less money. I tried to compare the Imperial with that Radian to a little Karlson with 1/10 the internal volume. The little K might work well with a subwoofer - it may not go as deep as this fudged sim indicates

 

[Tubenstein]

Btw, who makes 15cx? Which brand?

 

[lisoformio]

Take a look at 18Sound, Faitalpro, B&C and Sica catalogs.
Beyma, RCF, PHL, BMS, Eminence, too.

 

[plasnu]

Why not Jensen P15LL? A great woofer made for Imperial cabinet.

 

[plasnu]

I think the Radiant drive unit is seriously made with very low Qts.

I guess it should sound better than the vintage Jensen G610.

G610 is a special speaker, not comparable to the others, IMO.