urei speakers, horn removal

[pucho812]

anyone have a manual or instructions on removing the horn from the urea/altec 604-8g speakers?

Never mind, I believe the plastic horns just bolt on.  for the curious, the plastic horns are going away in favor of  a nice walnut horn. 

 

[Kingston]

Translation error or what? For a product name urea is not the best. What were they thinking.

 

[pucho812]

Translation error or what? For a product name urea is not the best. What were they thinking.

auto correct changed urei to urea.  ;D

https://en.wikipedia.org/wiki/Urea

 

[Tubetec]

Wow sounds nice ,
Urei

what will you power them with ?

Active crossover with dsp or passive ?

Urea's in pee pee

 

[Kingston]

auto correct changed urei to urea.  ;D

https://en.wikipedia.org/wiki/Urea

http://www.autocorrectfail.org/

But since we're here, isn't urei the plural of urea.

I'll get me coat

 

[pucho812]

Wow sounds nice ,
Urei

what will you power them with ?

Active crossover with dsp or passive ?

Urea's in pee pee

urea doh.... o.k. the model in question is a urei 815A this has the duel 15" woofers and an altec 604-8g coaxial. I have had these for some time but as fate would have it, the plastic horn got cracked by an idiot. Not me, a different idiot. LOL Anyway I decided that  I can get rid of the plastic horn and put in a wooden horn. Should look nicer and from the specs should be much more pleasing to the sound.

 

[gridcurrent]

anyone have a manual or instructions on removing the horn from the urea/altec 604-8g speakers?

carefully peel away the felt dust covering.
it can be removed off with minimal damage to the paper cone.
horn is attached with 2 phillips head screws.

interesting information on the horns.
https://greatplainsaudio.com/gpa-vintage-altec-ezine/altec-lansing-duplex-speakers/

offering my opinion that the original mid period horns, "C' through "8-G", are the least honky.
it was trendy in the mid 70's to saw out the vanes in the "E" models, ostensibly to improve the HF response.
the result was unfortunately more honk.

 

[pucho812]

carefully peel away the felt dust covering.
it can be removed off with minimal damage to the paper cone.
horn is attached with 2 phillips head screws.

interesting information on the horns.
https://greatplainsaudio.com/gpa-vintage-altec-ezine/altec-lansing-duplex-speakers/

offering my opinion that the original mid period horns, "C' through "8-G", are the least honky.
it was trendy in the mid 70's to saw out the vanes in the "E" models, ostensibly to improve the HF response.
the result was unfortunately more honk.

thanks.  I plan to recone them at the same time so not too worried about paper damage to the cone. 

 

[Tubetec]

Are the voice coils toasted in them ?

Serious speaker , more like a p.a system in many ways , Bi-amp with dsp/RTA/mic/eq might be an interesting prospect , no doubt they were originally designed passive .

Will you redesign the horn or just have as close as you can to the original made up in w

 

[pucho812]

Are the voice coils toasted in them ?

Serious speaker , more like a p.a system in many ways , Bi-amp with dsp/RTA/mic/eq might be an interesting prospect , no doubt they were originally designed passive .

Will you redesign the horn or just have as close as you can to the original made up in w

No the coils are fine. The plastic horn is worse for wear.  The wood horn redesign is close to the plastic but will be a nice wallnut

 

[thomasdf]

How can I remove the horn on a Urei 809 speaker ? I don't want to risk breaking them, and I cant see bolts ?

Edit: Nevermind, found it : the rear high end driver needs to be unscrewed and there are a pair of bolts that hold the horn

 

[pucho812]

Never showed the end result, I think.

 

[thomasdf]

nice ! did you notive any difference in sound ? the original horns have dense foam on the vertical sides and lighter foam on the outside edges
At least mine does

 

[rob_gould]

nice walnut horn.

Ooh! Can you post photos?

Edit - just seen the photo!

Did you make these? Or have them custom made? Or are they available retail?

 

[pucho812]

I had this made as I know someone who has a cnc machine.

nice ! did you notive any difference in sound ? the original horns have dense foam on the vertical sides and lighter foam on the outside edges
At least mine does

I have noticed a difference in sound, something I feel is a positive, the dense wood keeps the horn from ringing, similarly to what the foam was doing but it looks much nicer and sounds much smoother. I originally went for this as one of the horns had been cracked in moving. When I repaired it, it just didn't sound the same.

 

[thomasdf]

Ok ! Thanks for the feedback