Mission 717 Speaker Set

JamesEWilson · 2nd March 2011, 05:46 PM

Rec'd a pair of these in dire need of repair

Both x-overs have broken ferrite inductors - these may be required to be replaced
I have one bass/mid driver - all the other are missing
Appears this driver has the glue bond attaching the magnet to the frame has dried up,
cracked and detached - obviously adhesive didn't age very well
Also, one of the cabs mitre joint to the base of the speaker is beginning to separate
This will require repair also

Q - what would be suitable for a complete driver (bass/mid & HF) replacement?
Suggest same problems with glue
Q - Can someone supply (indicatively) the value for the broken inductors?
Albeit if I get a complete new driver set - the x/over will have to change

I see per post
Damaged Mission 717 tweeter
suggestion for HF units

Any help and suggestions appreciated

kipman725 · 3rd March 2011, 09:00 PM

mission stock replacment drivers at ok prices. Cost 17GBP for a new woofer for 760's, just get in touch with them.

JamesEWilson · 3rd March 2011, 10:09 PM

Thanks for the info

Have tried to use the contact form as well as the support form
None of these work and that is in two browsers

Will try to contact them by telephone

Note, these are very old speakers - may be a problem sourcing drivers

Any other suggestions appreciated

Thx

Inductor · 4th March 2011, 06:47 AM

JamesEWilson,
After google, more info here
Mission 717. - AudioKarma.org Home Audio Stereo Discussion Forums
eshop - Speaker Spares - Mission

JamesEWilson · 4th March 2011, 11:28 AM

Seems these will be hard to come by.
The vendor no longer supplies 717 drives and
the advertised replacement (I think) is not suitable.

I have sourced Beyma 8M70
http://www.lmcaudio.co.uk/assets/pdf/beyma/8M70E.pdf

The outside dimension are a perfect fit.
The PCD is 1mm out.
Work will be required with the cabinets as this unit has a baffle depth of 7mm.
By my reckoning, the cut depth for the old Mission drivers is 3.5mm +/- 0.25mm
These are rough calcs - will need a set of calipers to make sure.

Seems the Beyma drive units are better specified than the Mission
pressed steel unit in situ.

Will next need to review suitable HF units to match.

Any suggestions?

2nd March 2011, 05:46 PM	#1
JamesEWilson diyAudio Member Join Date: Jan 2006 Location: UK	Mission 717 Speaker Set Rec'd a pair of these in dire need of repair Both x-overs have broken ferrite inductors - these may be required to be replaced I have one bass/mid driver - all the other are missing Appears this driver has the glue bond attaching the magnet to the frame has dried up, cracked and detached - obviously adhesive didn't age very well Also, one of the cabs mitre joint to the base of the speaker is beginning to separate This will require repair also Q - what would be suitable for a complete driver (bass/mid & HF) replacement? Suggest same problems with glue Q - Can someone supply (indicatively) the value for the broken inductors? Albeit if I get a complete new driver set - the x/over will have to change I see per post Damaged Mission 717 tweeter suggestion for HF units Any help and suggestions appreciated

4th March 2011, 06:47 AM	#4
Inductor diyAudio Member Join Date: Feb 2006 Location: Cascais	JamesEWilson, After google, more info here Mission 717. - AudioKarma.org Home Audio Stereo Discussion Forums eshop - Speaker Spares - Mission __________________ What the Hell is this crap?! It's not crap, it's muzak.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Speaker delayed insertion, speaker protector, off set sensor	destroyer X	Solid State	34	17th June 2011 03:07 AM
New Flat Panel Speaker 2x2 speaker set for sale (3800 sets)	Tenacious	Vendor's Bazaar	0	18th June 2010 12:17 AM
Mission Speaker Spares	Blue_Max	Multi-Way	4	11th August 2008 01:05 PM
Damaged Mission 717 tweeter	David McArthur	Multi-Way	1	5th January 2008 04:18 PM
Mission M72 speaker	Mantronic	Multi-Way	5	28th July 2003 07:07 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

3rd March 2011, 09:00 PM	#2
kipman725 diyAudio Member Join Date: Jun 2007 Location: London/N.lincs	mission stock replacment drivers at ok prices. Cost 17GBP for a new woofer for 760's, just get in touch with them.

3rd March 2011, 10:09 PM	#3
JamesEWilson diyAudio Member Join Date: Jan 2006 Location: UK	Thanks for the info Have tried to use the contact form as well as the support form None of these work and that is in two browsers Will try to contact them by telephone Note, these are very old speakers - may be a problem sourcing drivers Any other suggestions appreciated Thx

4th March 2011, 11:28 AM	#5
JamesEWilson diyAudio Member Join Date: Jan 2006 Location: UK	Seems these will be hard to come by. The vendor no longer supplies 717 drives and the advertised replacement (I think) is not suitable. I have sourced Beyma 8M70 http://www.lmcaudio.co.uk/assets/pdf/beyma/8M70E.pdf The outside dimension are a perfect fit. The PCD is 1mm out. Work will be required with the cabinets as this unit has a baffle depth of 7mm. By my reckoning, the cut depth for the old Mission drivers is 3.5mm +/- 0.25mm These are rough calcs - will need a set of calipers to make sure. Seems the Beyma drive units are better specified than the Mission pressed steel unit in situ. Will next need to review suitable HF units to match. Any suggestions?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)