Dad’s DIY Paragons make the move…

[DanMan]

Howdy all;

Early on in this post y'all mentioned upgrades to these speakers. I've finally got a little cash and would like to upgrade the woofers. The reason/motive is that while the LE-15A was a great woofer in its time, I'd like to generate more low end response out of these Paragon(s). I find the LE-15A (like y'all do) somewhat lacking below 30 hz. The 20-30hz, and again at 60 hz, are my favorite frequencies on the low end.

Can y'all chime in on on some possible replacements for the woofers that would not require x-over or tweeter mods? I really like the LE85 sound and want to keep those.

What other possible woofers could I use in these? If there is a modification necessary I could handle the woodwork required to accommodate the extra depth or throat opening, but that's probably all.

Much obliged with y'alls recommendations.

Thanks,
Dan

[Lee in Montreal]

Add a sub.

[more10]

The problem is not the woofer, its the horn. I really don´t believe the Paragon horn is able to output anything below 30 Hz, its too short.

[Lee in Montreal]

The problem is not the woofer, its the horn. I really don´t believe the Paragon horn is able to output anything below 30 Hz, its too short.

The 7ft long horn in the 4530 cuts out at 40Hz
The 8ft long horn in the 4520 cuts out at 35Hz

How long in the horn in the Paragon? Can't beat physics. Hence my recommendation to use a sub.

[Maron Horonzakz]

I WOULD RECOMMEND A SUB,,,ALSO THE LE 15 surround gets hard and needs refoaming ,,That might help ..

[Lee in Montreal]

BTW Why not try a 2235 and see by yourself ?

[more10]

Sell them and buy M2 monitors. You will also get a new car.

[DanMan]

Okay please let me revise into two easier questions:

1) If a 20 hz sound is produced in this system at the woofer location, will it come out as a 20hz sound through the front of this "paragon" speaker?

2) Does this system call for a 8 ohm or 16 ohm woofer?

okay 3) What other technical variable(s) should be considered for the woofer besides impedance in this application?

thanks all.

RIP Zilch and hope Lou Reed is playin for ya on a godsend system up there~!

[more10]

1) No

2) 16

I found the thread 150-4C or LE15A for Paragon. It might interest you.

[DanMan]

Lee mentioned a 2235, which I see plenty of on ebay. What would be the effects of using an 8 ohm woofer here?

[more10]

model fs qts  qms qes  vas   eff pe  xmax re  le  sd    bi   mms flux
le15a 20 0.21 5.5 0.22 736.2 2.6 100 4.06 8.8 2.2 0.088 22    97 0.9
2215a 20 0.21 5.5 0.22 736.2 2.6 100 4.06 5.7 1   0.090 22    97 0.9
2215b 20 0.21 5.5 0.22 736.2 2.5 100 4.06 8.8 2.2 0.088 22    97 0.9
2215h 20 0.21 5.5 0.22 736.2 2.6 100 4.06 5.7 1   0.090 22    97 0.09
2231a 16 0.21 5.5 0.22 736.2 1.4 100 5.08 6.3 1.4 0.088 21   151 1.2
2231h 16 0.21 5.5 0.22 736.2 1.4 100 5.08 6.3 1.4 0.088 21   151 1.2
2234h 23 0.22 2   0.25 458.7 2.1 150 8.38 6   1.2 0.090 20.5 105 1.2
2235h 20 0.25 2.5 0.28 458.7 1.3 150 8.38 6   1.2 0.090 20.5 155 1.2

It could be that the le15a is getting tiered. Then replacing it with a ferrite driver should get better results. Or you could have the le15a remagnitized. You can try to simulate different drivers in hornresp.

If you replace the crossover with an active you don´t need to worry about the impedance. If you keep the crossover you will have to make some adjustments to the crossover.

[Lee in Montreal]

Lee mentioned a 2235, which I see plenty of on ebay. What would be the effects of using an 8 ohm woofer here?

Anything but the stock drivers on stock crossovers is an experimentation. Change one element and the whole balance shears. So. It's not plug and play. The cabinet wasn't designed for 20Hz. But if you want to experiment, then see if other drivers will do. Be prepared for some major tweaking. And some active crossovers. And extra amp. And maybe you will get interesting results.

One thing worth considering is the small back volume. Most drivers require a huge volume to output a low frequency. You could use a a heavy-coned sub driver to get 20Hz out of such small volume, but it will not reach beyond 80Hz and will require a lot of watts.

As I said. If you want 20Hz, get a dedicated sub and keep the Paragons for what they are designed for.

[ivica]

Lee mentioned a 2235, which I see plenty of on ebay. What would be the effects of using an 8 ohm woofer here?

May be 2234H would be better replacement, but I would not expect anything lower then 30Hz (35Hz).


Regards
ivica

[DanMan]

Thanks y'all. I do have a sub on this system. But the room is VERY VERY bass hungry. Or should I say lacking?!

The room is really big (20'x20') and vaulted / angled ceiling (like a big horn) and there are no doors so its open to the entire first floor of the house.

The perfect position for mains is where the paragon(s) sit, and I'd really like an all-around beefier low end sound out of them.

There's a pair of 2225J's that end in 24 hours on the bay right now... whatch'all think about those in hear (here) ??

http://www.ebay.com/itm/130949875805...84.m1423.l2648

[more10]

The 2225 is too expensive. You should be looking at 18" for the subs.