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Old 23rd January 2013, 08:34 PM   #71
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Quote:
Originally Posted by turbodawg View Post
In WinISD the peak is about 45hz with -3db @ 35hz and 100hz. Hornresp 95 db/2v/1m/2pi @ 40-50hz.
Can you post a screen capture of the figures you used in HornResp to sim your design please?
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Old 23rd January 2013, 08:38 PM   #72
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Quote:
Originally Posted by Brian Steele View Post
Can you post a screen capture of the figures you used in HornResp to sim your design please?
If I get a chance, tonight.
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Old 25th January 2013, 07:12 PM   #73
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Bump. Sorry no plots yet.

This woofer has been discussed in other threads, but thought it would be worthwhile to mention it here:

Infinity Reference 1262w - $56.45 shipped
Amazon.com: Infinity Reference 1262w 12-Inch 1200-Watt High-Performance Subwoofer (Dual Voice Coil): Car Electronics

Since they are DVC, they can be setup as 2 ohms. This means that you could run a stereo pair of them off an NU1000DSP ($256) and get nominally 380 wrms per channel. Build them sealed or ported, not sure how they do in a horn. Would be a very nice setup if you want stereo subs or need multiple subs for room correction. I make no claims about their output, but they are spec'ed at xmax 13mm, Sd 531 cm3, 300 wrms rated power.

They also offer a single voice coil version for ~$50. There are JBL car audio woofers that are a bit more expensive but pretty similar.

Last edited by turbodawg; 25th January 2013 at 07:19 PM.
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Old 25th January 2013, 07:33 PM   #74
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Quote:
Originally Posted by turbodawg View Post
Bump. Sorry no plots yet.

This woofer has been discussed in other threads, but thought it would be worthwhile to mention it here:

Infinity Reference 1262w - $56.45 shipped
Amazon.com: Infinity Reference 1262w 12-Inch 1200-Watt High-Performance Subwoofer (Dual Voice Coil): Car Electronics

Since they are DVC, they can be setup as 2 ohms. This means that you could run a stereo pair of them off an NU1000DSP ($256) and get nominally 380 wrms per channel. Build them sealed or ported, not sure how they do in a horn. Would be a very nice setup if you want stereo subs or need multiple subs for room correction. I make no claims about their output, but they are spec'ed at xmax 13mm, Sd 531 cm3, 300 wrms rated power.

They also offer a single voice coil version for ~$50. There are JBL car audio woofers that are a bit more expensive but pretty similar.
I agree; at least the REF1260W model has very versatile T/S -parameters and is a very affordable woofer. A while ago I seriously contemplated getting either two or four of these and using them in a large sealed enclosure.

I attached a datasheet of this driver.

Code:
VAS (LITERS) . . . . . 82.96
Q MS . . . . . . . . . 6.99
Q ES . . . . . . . . . 0.41
Q TS . . . . . ..  . . 0.39
FS (HZ) . .  . . . . . 23.50
X MAX (MM) . . . . . . 13.00
S D (M2) . . . . . . . 531.00
B L (TM) . . .  .. . . 16.90
R EVC (OHMS) .. .. . . 3.59
Attached Files
File Type: pdf REF1260W_PI_EN.pdf (130.9 KB, 19 views)
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Old 26th January 2013, 11:53 AM   #75
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I suggested the discontinued version of the 1262, the 1250, very early in this thread. You could build two subs powered by a stereo amp with built in filters and come in close to $500. I'm using a driver that models almost identically, MB Quart PWH302, in a sealed 4^ft cab with very satisfying results. I think a pair would sound incredible.

Last edited by audiomagnate; 26th January 2013 at 12:16 PM.
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Old 26th January 2013, 05:10 PM   #76
Trileru is offline Trileru  Romania
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Hey guys, interesting topic! Very good info here. I'd appreciate if some Europeans could make a similar setup for about 370€ (the equivalent of 500$) with shipping inside the European Union. I'm tired of drooling over US equipment/prices
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Old 27th January 2013, 03:35 AM   #77
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Quote:
Originally Posted by turbodawg View Post
I was going to buy them but ended up with JL W3v3 sub
These 1262 have been mentioned on this thread several times. Do these sound really good?

I guess car subs are designed to use small enclosure volume. Doing so.. they may compromise on either sensitivity or low freq extension. Its the LAW
With a 500$ budget i would spend way more than $50 on sub

Has any one looked at these amps ? Cheep and powerful enough to compete
600 watt Class D amp from parts express $100
1x600W TAS5630 Class-D Amplifier Board 320-311
power supply 130$
48 VDC 12.5A 600W Regulated Power Supply 320-317
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Old 27th January 2013, 11:06 AM   #78
Juhazi is offline Juhazi  Finland
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"I'd appreciate if some Europeans could make a similar setup for about 370 euro; (the equivalent of 500$) with shipping inside the European Union."

That's a tough task! The sales prices are so much higher here compared to PE and Madisound. And the sellers don't have so many "special offers"

My Dayton DCS380-4 are 90$ at PE but around 115€ in Europe. However it is cheaper to purchase them from inside EU because cargo of big items and taxes from USA are so high.
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Last edited by Juhazi; 27th January 2013 at 11:11 AM.
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Old 27th January 2013, 12:47 PM   #79
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That 600w amp requires DC power supply, and is rated at 10%THD for the 600w. I'd stay away from that as opposed to a decent plate amp that is meant to run on 120vac, will have just as much power and built in EQ capabilities for just slightly more (than the amp/power supply combo you posted)

Last edited by m R g S r; 27th January 2013 at 12:50 PM.
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Old 28th January 2013, 04:12 PM   #80
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Quote:
Originally Posted by Brian Steele View Post
Can you post a screen capture of the figures you used in HornResp to sim your design please?
See these two posts:

MTH30 Questions : Complete Noob!

MTH30 Questions : Complete Noob!
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