My project delay again

[thylantyr 10+ year member]

I had 8 tweeter enclosures made previously when the plan was to make a hybrid

line array and there was drama in making those, short story, the machinist

messed up a little, then I changed my mind on plating and the platers messed up.

What I got was 8 tweeter enclosures that were unique but not what I visioned.

It's ok, it's a consistent screw up and nobody will know. Here is picks of that.

Pics of machined parts; These parts is for one tweeter. I need parts

to make 21 tweeters plus spares, lots of work on machining. I'm not

a machinist so I have to hire someone cheap.

http://home.pacbell.net/lordpk/sa/4.jpg

Pics of tweeter;

http://home.pacbell.net/lordpk/sa/1.jpg

http://home.pacbell.net/lordpk/sa/2.jpg

Pics of tweeter inside it's own enclosure;

http://home.pacbell.net/lordpk/sa/5.jpg

http://home.pacbell.net/lordpk/sa/6.jpg

Pic of tweeter compared to an 8" midrange;

http://home.pacbell.net/lordpk/sa/7.jpg

Pic of a '4 stack tweeter' vs. Dayton PT2/NSB line array.

http://home.pacbell.net/lordpk/sa/test.jpg

Problem is, when the design migrated from a hybrid array using 4 tweeters

per tower to a full blown line array with 8 tweeters per tower, I need more

tweeters and enclosures. It would be difficult to duplicate the screw up

on those 8 tweeter enclosures so I figure I need to do a new batch from

scratch. I just have to find a machinist that wouldn't charge me a ton of money

to make 231 machined parts plus spares.

The tweeter enclosure is to protect the expensive tweeter, make it easy to

install in the box when arrayed, and you have to rework the internal

electrical wiring from the front of the tweeter to the rear of the box.

Yeah, that tweeter is a mechanical headache, but SQL is unreal and

worth the nightmare if you ever experience one.

There is a reason for my madness //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[djman37 5,000+ posts]

are those ravens?

 

[thylantyr 10+ year member]

They are magnetic planars, some call them isodynamic planars, the manufacturer

calls them 'ribbons' using the term loosely and incorrect, they are not true ribbons

like Ravens, etc.

This particular design offers the best SQ with SPL of all tweeters I've worked with.

There are two other brands in the same league but not available for purchase

seperately unless you want to buy the 'system' and remove the tweeters... lol

Only compresson drivers with horns can produce more SPL but SQ suffers

compare to this tweeter. If you can tolerate a we bit less SPL than a big

horn to gain a huge boost in SQ, this is the tweeter to get.

Tube geeks would get a boner if they knew it was 13 ohms nominal {high

impedance, tube amp friendly}, and 103dB sensitivity. They also sell a waveguide

for it to boost sensitivity to 107dB but the frequency response is peaky at some

mid frequencies.

If you have a wild imagination, imagine 21 tweeters in a 7.1 HT system where

the mains are 8 tweeter per tower line arrays with 8" mids and another set

of line arrays where you have eight 15" midbass drivers tuned to 35hz,

then add a monster high xmax sub(s), everything powered by over ten pro audio amps

in bridge mode for ultimate death and punishment.

 

[djman37 5,000+ posts]

They are magnetic planars, some call them isodynamic planars, the manufacturercalls them 'ribbons' using the term loosely and incorrect, they are not true ribbons

like Ravens, etc.

This particular design offers the best SQ with SPL of all tweeters I've worked with.

There are two other brands in the same league but not available for purchase

seperately unless you want to buy the 'system' and remove the tweeters... lol

Only compresson drivers with horns can produce more SPL but SQ suffers

compare to this tweeter. If you can tolerate a we bit less SPL than a big

horn to gain a huge boost in SQ, this is the tweeter to get.

Tube geeks would get a boner if they knew it was 13 ohms nominal {high

impedance, tube amp friendly}, and 103dB sensitivity. They also sell a waveguide

for it to boost sensitivity to 107dB but the frequency response is peaky at some

mid frequencies.

If you have a wild imagination, imagine 21 tweeters in a 7.1 HT system where

the mains are 8 tweeter per tower line arrays with 8" mids and another set

of line arrays where you have eight 15" midbass drivers tuned to 35hz,

then add a monster high xmax sub(s), everything powered by over ten pro audio amps

in bridge mode for ultimate death and punishment.

all I can say is, good lord!, that's some MAJOR gear.

:yumyum:Tweeters with SPL....

 

[ballstothewall 10+ year member]

What he didn't say is that two of those amps are Crest 10001's //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif//content.invisioncic.com/y282845/emoticons/omg.gif.05aa02c3095d6ce9338996654eca0863.gif

 

[thylantyr 10+ year member]

Well, my old boss is going to hook me up with a machine shop to

make 25 tweeter enclosures, that's about 250 peices of alumunum to

machine. /ouch Lets see what kinda pricing I get........

 

[thylantyr 10+ year member]

More good news. The old boss found some 3/8" thick, 5 foot by 20" piece of

scrap aluminum, 3 of these giant pieces. Freebie or trade with the machine shop.

Next week or two I'll have more info, but this is too sweet.

 

[thylantyr 10+ year member]

Bad news.

The machinist doesn't want to use the 3/8" material and machine it down to 1/4"

nor will the material vendor take the 3/8" aluminum and offer a discount on 1/4".

6 weeks later, I get a quote for the project.

$925 materials

$10,000 labor

Ridiculous.

This is his way of saying "I don't want to do this project" by giving a quote

that high.

We will get another quote from another shop for reference.

Boooo.....................

 

[ngsm13 5,000+ posts]

Lol.

nG

 

[thylantyr 10+ year member]

I need to use the Jedi hand wave to lower price //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

"You will charge me $100 to make the parts"

"I will make those parts for $100"

lol.