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-   -   Project: monitor-XL reference values (http://www.diyaudio.com/forums/multi-way/193513-project-monitor-xl-reference-values.html)

Helmuth 28th July 2011 07:06 PM

Project: monitor-XL reference values
 
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Hi,

I will presentate my 2010 project en big monitor that I named monitor-XL.

After failing to get subbase with a backloaded horn.http://www.diyaudio.com/forums/multi...-almighty.html I became to make a basreflex two way that is flat down to 30Hz that is what I need with popmusic.

The project was realized in two weeks and I spend three-quarter of a year to tweak measurements and listening test to come to a high quality result.

92dB 1W/mtr 25Hz-20kHz

Here they are:

Helmuth 28th July 2011 07:11 PM

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Measurements.

Mls pulse and spl measured on 25cm for a large part with in +/- 1.5dB.

Helmuth 28th July 2011 07:12 PM

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Waterfall measured with HBX V6 and with arta.

Helmuth 28th July 2011 07:17 PM

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Super linearity and THD figures.


THD bleu second harmonic red third harmonic. Measured at about 1W with my ucd-class-d power amplifier.
up to 1kHz about -40dB= 0,01% and above 1kHz about -60dB=0,0001%.

See THD and step response hole two way system.

Helmuth 28th July 2011 07:20 PM

2 Attachment(s)
Channel similarity.


See line of left and right channel and grey line minimum phase.

And the other spl measurement the stereo MLS result measured on listening position.

a.wayne 28th July 2011 07:22 PM

Quote:

Originally Posted by Helmuth (Post 2653489)
Hi,

I will presentate my 2010 project en big monitor that I named monitor-XL.

After failing to get subbase with a backloaded horn. I became to make a basreflex two way that is flat down to 30Hz that is what I need with popmusic.

The project was realized in two weeks and I spend three-quarter of a year to tweak measurements and listening test to come to a high quality result.

92dB 1W/mtr 25Hz-20kHz

Here they are:


Hello Helmuth,


Nice looking speaker build, what drivers are you using ?

Helmuth 28th July 2011 07:24 PM

3 Attachment(s)
Enjoy:cool:

I made the enclosure so it can be placed in two positions.

Helmuth 28th July 2011 07:27 PM

1 Attachment(s)
Quote:

Hello Helmuth,


Nice looking speaker build, what drivers are you using ?

Monacor sph-265 super midsubwoofer, Horn driver you can use 1" bms upto 30kHz, B&C or RCF.

Helmuth 28th July 2011 07:36 PM

Projects 2008.
http://www.diyaudio.com/forums/multi...ss-fatboy.html

http://www.diyaudio.com/forums/multi...iniumcone.html

Current project:
http://www.diyaudio.com/forums/multi...llen-horn.html

DrDyna 28th July 2011 07:38 PM

Nice looking speaker, I like the single angled side for horizontal placement, looks pretty cool.

Any chance you could show us what the crossover looks like?


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