Horn for 2440

[nic]

Hi

Does anyone have plans for a wooden horn for a 2440, planing to go from 500 to 7000Hz.

I'm building a new tri amped system with double 2225 bass, 2440 mids and 2405 high :D

Thanks

Nic

[Earl K]

Hi,

- Read this thread from last year (http://audioheritage.csdco.com/vbulletin/showthread.php?t=15395&highlight=RCA+Radial) for some ideas .

- Also, do a site search for " radial horn " to see what turns up .

- Radial horns are pretty straight forward . The horizontal axis is planar ( deemed to be a conical expansion ) with the vertical expansion being exponential .
- I prefer Altecs' aspect ratio of the mouth ( Height vs Width ) for their radial designs ( called sectorals ) over what was used by JBL or even RCA .

- Buying a pair of JBL 2328 cast metal throats can simplify the "entry to horn bell" conundrum ( design ) .

<> :)

[Rolf]

Hi

Does anyone have plans for a wooden horn for a 2440, planing to go from 500 to 7000Hz.

I'm building a new tri amped system with double 2225 bass, 2440 mids and 2405 high :D

Thanks

Nic

Why don't you just use the original horn?

[Huynh Chau]

Hi

Does anyone have plans for a wooden horn for a 2440, planing to go from 500 to 7000Hz.

Nic
Wood horn A290E for 375,2440,2441 and Tad

[Earl K]

Huynh Chau

- Thanks for posting those drawings !

<> :)

[Earl K]

nic,

- Check out reVintages' thread on modifying ( massacring ) an Altec 511 horn to accept a 2441 driver . (http://audioheritage.csdco.com/vbulletin/showthread.php?t=18516&highlight=Massacre)

- This ought to be a pretty decent sounding horn ( once the metal bell is damped somewhat ) .

- This could all be done in wood .

:)

- Here are some pics from that thread .

[Earl K]

nic

http://audioheritage.csdco.com/vbulletin/attachment.php?attachmentid=23247&stc=1&d=1172597397

http://audioheritage.csdco.com/vbulletin/attachment.php?attachmentid=24361&stc=1&d=1176577468

- Check out John Ws' thread on making H9800 clones. (http://audioheritage.csdco.com/vbulletin/showthread.php?t=14933&page=1)
- Though the H9800 has a 1.5" entry, this thread can provide a lot of ideas & inspiration to the novice horn builder .

http://audioheritage.csdco.com/vbulletin/attachment.php?attachmentid=23248&stc=1&d=1172597549

http://audioheritage.csdco.com/vbulletin/attachment.php?attachmentid=23269&stc=1&d=1172677735

-Also, follow Johnnys' thread ( yggdrasil ) for his insights about making a tractrix flared radial (http://audioheritage.org/vbulletin/showthread.php?t=8363) .

http://audioheritage.csdco.com/vbulletin/attachment.php?attachmentid=23256&stc=1&d=1172613837

:)

ps ; do a search for threads authored by either John W ( or yggdrasil ) for more info .

[Mr. Widget]

Huynh Chau

- Thanks for posting those drawings !
Yes, yes, yes!

People are frequently asking for just this sort of horn. Do you have any background on it, i.e. who designed, it's history etc.


Widget

[nic]

Thanks for all the replies. I'll look at the linked threads closely.

I also stumbled on the Iwata horn, which from what I have read is the "perfect" horn when it comes to wave propagation and loading of drivers like the 2441 and 2440.

It's not a straight forward build though due to the different expansions coefficients in the 2 dimensions ..

I have pair of Altec 511 with matching 802 drivers so don't really want to massacre them just now !

Thanks

Nic

[nic]

Wood horn A290E for 375,2440,2441 and Tad

Thanks, any chance you have the CAD files available ?
DXF, DWG ?

I can then cut templates using our laser , makes the job a LOT easier

Thanks

Nic

[yggdrasil]

Yes, yes, yes!

People are frequently asking for just this sort of horn. Do you have any background on it, i.e. who designed, it's history etc.


Widget
It has been up here before: http://audioheritage.org/vbulletin/showthread.php?t=12129&highlight=yuichi

The drawing is nowhere as good, and the reading is .... hard.

[paragon]

This one ?:D