altec 807-8z

AudioGeek · 13th June 2007, 02:02 PM

hey just got a pair of altec 807-8z horn drivers. unsure of what these are worth or what i can do with them.

ideas?

Cal Weldon · 13th June 2007, 04:31 PM

The 807 is one of the small format 1" exit drivers. Do you have the horns and the drivers together?

Pics?

Zen Mod · 13th June 2007, 05:51 PM

Quote:

Originally posted by AudioGeek
hey just got a pair of altec 807-8z horn drivers. unsure of what these are worth or what i can do with them.

ideas?

junk.
I'll do safe disposal for you - without charge.

but- you pays the shipping

Tom Brennan · 14th June 2007, 12:16 AM

Use them from 500 hz on up with a proper horn. Some people cross at 800hz, 1200 hz; whatever. But you can go as low as 500.

As I recall the 807 used the high power handling Symbiotic diaphragm which most Altechies think is a little raw sounding and not quite as extended in the highs as the aluminum ones.

What I'd do with them is get some aluminum diaphragms from Great Plains. I'd get a pair of 811B horns for them and use them with model 416 woofers in a proper vented box. For a crossover I'd build a clone of the Model Nineteen crossover.

Values change on a daily basis. Check ebay.

AudioGeek · 14th June 2007, 04:02 AM

i do have the horns and drivers together. i am unsure what horn it is... but it is metal.

yeah i should look for the other drivers.

what x-over point should i use?

1st order?

Cal Weldon · 14th June 2007, 04:06 AM

Show us some pics please. Are there any numbers you can see on the horns?

EDIT: we need to see the horns to guess at an XO point.

AudioGeek · 14th June 2007, 04:27 AM

they have:

H-811B on horn part (metal)

and on driver:

807-8Z and 391132.

I have 2 of these.

got them for free.

)

quite large.

i will try and get photos in next day or so.

need to find a nice 15in driver for lows now.

also i read about replacing the diaphragm on compression driver for one that has a smoother HF response...

any thoughts??

Tom Brennan · 14th June 2007, 12:44 PM

Geek----My advice is to crossover at 1200 hz using the Model 19 crossover. That crossover EQs the compression driver for extended high frequency response.

Get aluminum diaphragms from GPA.

Use an 8 ohm Altec 416 woofer.

My advice and opinions.

Cal Weldon · 14th June 2007, 02:48 PM

I like Tom's advice. The 811B is the "small" horn in the Altec line, designed for 800 Hz and up. The 416 woofer is a good match. I think you could use the 515 woofer as well.

Evenharmonics · 14th June 2007, 04:38 PM

Great Plains does an overhaul service at a reasonable cost which includes new diaphragm, gap cleaning and magnet recharging. There are many aluminum diaphragm choices but I’ve heard good things about #34647. http://www.greatplainsaudio.com/PartsList.html

13th June 2007, 02:02 PM	#1
AudioGeek diyAudio Member Join Date: Jan 2004 Location: Minnesota	altec 807-8z hey just got a pair of altec 807-8z horn drivers. unsure of what these are worth or what i can do with them. ideas? __________________ Richard C Jones "The wannabe AudioGeek"

13th June 2007, 04:31 PM	#2
Cal Weldon diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	The 807 is one of the small format 1" exit drivers. Do you have the horns and the drivers together? Pics? __________________ Read dozens of books about heroes and crooks and I learned much from both of their styles. (JB)

14th June 2007, 04:02 AM	#5
AudioGeek diyAudio Member Join Date: Jan 2004 Location: Minnesota	i do have the horns and drivers together. i am unsure what horn it is... but it is metal. yeah i should look for the other drivers. what x-over point should i use? 1st order? __________________ Richard C Jones "The wannabe AudioGeek"

14th June 2007, 04:06 AM	#6
Cal Weldon diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Show us some pics please. Are there any numbers you can see on the horns? EDIT: we need to see the horns to guess at an XO point. __________________ Read dozens of books about heroes and crooks and I learned much from both of their styles. (JB)

14th June 2007, 04:27 AM	#7
AudioGeek diyAudio Member Join Date: Jan 2004 Location: Minnesota	ok they have: H-811B on horn part (metal) and on driver: 807-8Z and 391132. I have 2 of these. got them for free. ) quite large. i will try and get photos in next day or so. need to find a nice 15in driver for lows now. also i read about replacing the diaphragm on compression driver for one that has a smoother HF response... any thoughts?? __________________ Richard C Jones "The wannabe AudioGeek"


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14th June 2007, 12:16 AM	#4
Tom Brennan diyAudio Member Join Date: Dec 2001 Location: Lexington Ky	Use them from 500 hz on up with a proper horn. Some people cross at 800hz, 1200 hz; whatever. But you can go as low as 500. As I recall the 807 used the high power handling Symbiotic diaphragm which most Altechies think is a little raw sounding and not quite as extended in the highs as the aluminum ones. What I'd do with them is get some aluminum diaphragms from Great Plains. I'd get a pair of 811B horns for them and use them with model 416 woofers in a proper vented box. For a crossover I'd build a clone of the Model Nineteen crossover. Values change on a daily basis. Check ebay.

14th June 2007, 02:48 PM	#9
Cal Weldon diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I like Tom's advice. The 811B is the "small" horn in the Altec line, designed for 800 Hz and up. The 416 woofer is a good match. I think you could use the 515 woofer as well. __________________ Read dozens of books about heroes and crooks and I learned much from both of their styles. (JB)

14th June 2007, 04:38 PM	#10
Evenharmonics diyAudio Member Join Date: Apr 2007	Great Plains does an overhaul service at a reasonable cost which includes new diaphragm, gap cleaning and magnet recharging. There are many aluminum diaphragm choices but I’ve heard good things about #34647. http://www.greatplainsaudio.com/PartsList.html

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