just another pretty picture :) 
Tuesday, December 9, 2014, 21:00
Posted by Anders

view entry ( 91 views )   |  permalink   |  print article   |   ( 3 / 20 )

Small tapped fullrange speakers thoughts 
Tuesday, November 11, 2014, 14:02
Posted by Anders
It may sound crazy... I will not know for sure until I build one, if I build one that is.

This is just a concept sketch, no plan, there is no plan, just a thought centered around the Fostex FX120.

The choise to go with a constant area (pipe) rather then a horn, is to achive a more efficient low end response with a shorter pathlength (smaller box).

This along with the folding will hopefully provide a more prenounced pass band with a reduced risk of upper band resonances making it to the summation area (filter effect).

I have not yet seen anything like this out there to date, but the internet is big so chances are I might have simply missed it, anyway, here it is :


view entry ( 239 views )   |  permalink   |  print article   |   ( 3.1 / 36 )

hornloading bliss - details 
Tuesday, April 8, 2014, 16:46
Posted by Anders
Some details and rough RTA measurements of the unholy union.

Driver:
2" Tangband W2-803SM full-range.

Horn:
JBL 2386.

Circuit:


Amp:
LAB IP450

XO:
DBX 223 XL

Source:
Audacity on Linux (generating pink noise)

RTA:
Phonic PAA2 measuring non weighted.

Distance:
1 Meter

The measurement setup :


The driver and circuit complement :


Measurement with HP set at 45Hz 24dB/Oct 1M:


Measurement with HP set at 250Hz 24dB/Oct 1M:


Measurement with HP set at 350Hz 24dB/Oct 1M (prefered):


It sounds a lot better then the graphs would have you believe, and the SPL capacity is greater the the drivers would have you belive.

Here's an approximated summary SPL graph result :

view entry ( 1593 views )   |  permalink   |  print article   |   ( 2.9 / 1036 )

testing the competition :) 
Monday, February 3, 2014, 20:28
Posted by Anders
A follow up on the same set of tests couple of friends of mine, and myself, undertook previously at this location, last time it was a heavy THAM15 focused operation, this time it was a blend between a really nice system and my own unholy unions.



The dark grey system was built by a friend of mine, nicknamed SlaitH, which was a delight to hear, at all levels, my own contribution consisted of a pair of THAM10 and a... well... 2" tangband fullrange speakers loaded on JBL 2386 2" horns...



A great day for sure, and you will be surprised, positively so, what amount of levels a pair of 2" drivers can muster up when horn loaded :)
view entry ( 1516 views )   |  permalink   |  print article   |   ( 2.9 / 758 )

seasons greetings ! 
Monday, December 23, 2013, 19:11
Posted by Anders


2014 might turn out to be quite an interesting year !

Take care all, and remember to share your knowledge, your passion, your important mistakes and your fortunate findings so that others out there can enjoy and learn from it.

Respecting all visitors to this page I say Merry Christmas to those of you who share in that tradition, and a happy new year, when ever it might be ! / martinsson
view entry ( 780 views )   |  permalink   |  print article   |   ( 3 / 714 )


| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next> Last>>