Search:

Hi all,

I know this is an old thread but did realized that I have not updated this for some time and some things have changed.

Thank you for all the nice and supportive comments.

The system...

Hi bubbleboy76,

Thank you.

I agree, I would turn them in more if possible.

The sides are both angled both inward and downward as much as the wall mount allows, please see better picture...

The room is about 5x8m and pretty decent when it coems to modes. 2x JBL SUB1500 subs do low end duty, one at the font of the room and one at the back.

Electronics is still same old fully digital...

Here are a comparison between the old and the new. Slightly bigger but still acceptable by the Government.

86223
86224

Here are some measurements of the 045 on the K2 S9900 horn incorporated into my butchered M2 horns.

Also attached is a system plot on the full system.

All these curves are taken outdoors on a...

Here are some measurements for the 2451Be's in cabinet on my butchered M2 horns.

No smoothing and please check scale change.


1. Far field 6ms 154cm outdoor
2. Far field 6ms 154cm with EQ...

The curve for the 1400PRO, even in such small cabinet, is pretty encouraging. Not much bass however. I do XO at 80Hz to the subs.

Here are some measurements

1400PRO in cabinet

1. Nearfield...

Short update.

Sorry bubbleboy76, no spare 045's. Check with LN.

Ivica, I have not gotten so far to figure out XO yet. The 1400PRO is clean to about +1200Hz so I might potentially increase to...

Good friends allways help :-)

Today was a good day. After +5 years the fronts are finally done, except for the cloth on the fronts.


Thank you Mr. J for the 1400PRO’s. And big thank you LH...

A good friend came to assistance. A brand new set of 1400Pro’s. Nice. Big thank you to Mr J!

85716
85717

Thank you for the kind words.

All diaphragms centered and measured.

A bit of a setback today. The two 1400PRO I have had on the shelf for many years waiting for this turned out to rub. They are...

Did some sanity measures today before the drivers goes into the cabinets.

Everything calibrated and checked against known ref.

I measured 3pcs of each and will use average for DSP filter...

Hi Pos,

I can post some comps next week. It is odd indeed.

I'm stuck on the old Crows CTS series class AB amps, fed from my BSS BLU800. They are as good as any with an odd topology used in...

Hi Pos.

I have no idea why the 475Nd dia's do measure "better" than other SL diaphragms in the 2451 cores (in my opinion) They are from the older K2 475Nd 2” driver, but the SL diaphragms should...

Just got my hands on two "Holy Grale" diaphragms in the form of 2pcs NOS original "Northridge" D16R475Nd. Great. They are not for this build but in my opinion the best dias for the large format 4"...

Beryllium drivers installed. UHF will get protection caps but drivers only an attenuator.

Tomorrow they are going into the cabinets.

85671
85672

Hi Ivica,

The impedance of the “naked” D2 does indeed shift quite a lot over the range. The passive filter does really matter as can be seen in the plots below.

All is D2/2430K marked “M2”...

Huge plans to cover some ground during the holidays was abandoned in the same pace they were made.

At least the cabinets are now reinforced for wall hanging and wall mount cups for left and right...

2430K and 2451Be on M2 WG. Be is smoother but falls off sharpely after 15k.

85539

Saturday fun in the shop.

2430k, 2451/475Nd, 2451Be & 2453SL

Impedance sweep naked, with VTX horn and M2 horns.

Tomorrow frequency measurements on all combinations.

Slowly getting there. ...

Hi POS,

Rob1 was the first M2 WG sold as a spare part back in 2014. That is where it started.

Now butchered to form something else.

More info to follow.

Still some work needed on the WG to make room for the 045. Slowly getting there.

85489

85483
85484

Christmas comes early this year.

Sorry for picture being upside down. No idea how to fix that. Normally ok, but this was uploaded from an iPad.

85448