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Old 8th April 2015, 06:22 AM   #1
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Default DIY cheap horn speaker

I had some big tapped horns on hand and I wanted some horns to play along.

Little sub has 2x 15" subs and Big sub has 4x 15" sub. They were made for garden parties, and have been parked in the garage for the winter. So why not make more horns for a complete system.
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Old 8th April 2015, 06:34 AM   #2
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Inspired by John Inlow I made his nice paper horn. It is made of paper and wood glue.

Here with horn stand and JBL 2445j driver.
This combi has 110dB/w so plenty of headroom.
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Old 8th April 2015, 06:53 AM   #3
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With some EQ from DCX2496, the response looks like this. LR 24/dB at 420hz.
Nice and smooth up to 15khz. Not much information and energy beyond that.
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Old 8th April 2015, 07:26 AM   #4
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Here is the paperhorn on top of the midbass horn.

I "borrowed" this design from Mr. Inlow and tweeked it to my needs.
It covers 80-500 hz and has a 15" P Audio mid bass. 108db for one watt.

More to come
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Old 8th April 2015, 10:41 AM   #5
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Here is the total system...

A 25w tubeamp is on the paperhorn.
And old british ITL (B&W) amp is playing the midbass and an Inuke 1000 on the subs. DCX 2494 for x-over and EQ to taste.

Total system price down to the last bolt, inc. amps and DCX2496, is 1500$

This bugedwise small system is kicking butt. The most realistic and "they are here" (the musician) I have heard so far. No box speaker can macth the dynamics, transient response and realism, IMHO. Its like hearing with a microscope and I constanly find new details in recordings I thought I new.

A big thanx to John Inlow (carpenter on DIYaudio) for inspiration. These horns has been an ear opener and has made my enthusiasm for music so much more fun

Cheers Sebastian
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Old 8th April 2015, 05:51 PM   #6
Pano is offline Pano  United States
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Very nice!
My limited experience with paper was very good. It seems to be a wonderful material for horns.

Slightly OT, have you done anything to your DCX? I ask because mine responded well to modifications. (all horn system, too).
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Old 8th April 2015, 08:03 PM   #7
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Originally Posted by Pano View Post
Very nice!
My limited experience with paper was very good. It seems to be a wonderful material for horns.

Slightly OT, have you done anything to your DCX? I ask because mine responded well to modifications. (all horn system, too).
Thanx Pano, yes the paper horn works very well indeed, the right amount of give and without the beaming effect. Relaxed and natural sounding.

The DCX is standard model. A modified unit would be more than total systemprice :-(
maybe I will change the op-amps myself.

What changes would you recomment?
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Old 8th April 2015, 08:36 PM   #8
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schlager,

Very nice job !!!! I use a similar system with TAD and field coil drivers and Altec 515b's for mid bass horn. NO box speakers can compete sound wise is an understatement !!!
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Old 8th April 2015, 09:00 PM   #9
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schlager,

Very nice job !!!! I use a similar system with TAD and field coil drivers and Altec 515b's for mid bass horn. NO box speakers can compete sound wise is an understatement !!!
Thanx hottattoo, TAD and field coil drivers, must sound awsome........and expensive
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Old 9th April 2015, 05:37 AM   #10
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I have always like the TAD drivers, but could not afford them.

As for the DCX, it's the analog section that isn't great. I used transformers for my outputs, other people do other things. Replacing a few of the caps in the PSU and near the DAC chips has great benefit, too.
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