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:
Serial connected (R) 2 x 4,7Ohm in parallel with (C) 8,2uF.

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 ( 62 views )   |  permalink   |  print article   |   ( 3 / 47 )

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 ( 435 views )   |  permalink   |  print article   |   ( 2.9 / 227 )

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 ( 608 views )   |  permalink   |  print article   |   ( 3 / 277 )

Teaser one ... 
Wednesday, November 6, 2013, 22:06
Posted by Anders

view entry ( 1022 views )   |  permalink   |  print article   |   ( 3.1 / 248 )

TPAM10HTL - like the TPAM10HT, only more. 
Wednesday, May 29, 2013, 18:52
Posted by Anders
Designed shortly after the TPAM10HT and is to be regarded as a preferred design of the two if you are scouting for a 26-90Hz sub to use in HT or hi-fi applications.

It does not reach as far down in the deep as the TPAM10HT which can offer a solid 20Hz reproduction, but compensates greatly for this by it's higher sensitivity, greater definition and SPL capacity, all in the same size.

When compared in room the difference in lower frequency cut off is hardly noticeable between the two, the character in favor of the THPAM10HTL is however most definitely noticeable.

The design below is intended for the 10NW64 from B&C, and allows for the driver to be mounted with the cone visible, this is why there is a double baffle, to create the depth required (>100mm) for the drive assembly (magnet).













Simulation input data for Hornresp is included in the picture above, so please feel free to experiment with other drivers, just pay due attention to the mounting depth as stated above, simulations will be provided shortly.

The second top most brace is not dimensioned with regards to its position along the path, but this oversight is not critical, just put it roughly where you see fit.

Material used is 15mm Plywood.
view entry ( 2629 views )   |  permalink   |  print article   |   ( 3 / 478 )


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