View Full Version : Mission 770 Value
dantheman91
30-08-2012, 17:57
Hi
I'm thinking about investing in pair of these and not sure of there current value. the guy has be using them for dj ing and say they are fully working. not sure what to offer for them.
DJ-ing huh? tweeters will be soft and the ferro-fluid may be thickened. Cabs may be shagged and heaven knows what the bass units will be like with all that pumpin' bass going through them for thirty years :eyebrows:
Seriously, I wouldn't bother. They weren't "that" good back then, although the agressive presence and treble made for an exciting listen on a quick dem and/or review. If you can get them in good order for £75 or so, then ok, but I wouldn't pay more unless they are mint and used carefully by one owner... By the way, at the time we used to recommend buying the pair demo'd to you, as no two were ever quite the same for various reasons.
dantheman91
30-08-2012, 18:08
I think they look pretty tired to be fair here's the link of the listing on gumtree.
http://www.gumtree.com/p/for-sale/great-deal-haul-of-dj-equipment-vinyl-to-go-to-a-good-home/110095978
Reid Malenfant
30-08-2012, 20:07
770s? Where :eyebrows:
There aren't any in that picture ;)
At the bottom of the speaker stack, but they're upside down - MK IIs?
Reid Malenfant
30-08-2012, 21:12
Look more like 707s to me... The 770 was a 50L enclosure & those as small, maybe 30L maximum ;)
I'll bow to your superior knowledge, Mark! :)
These could be 737R's, but the 770mk3's had the tweeter very close to the top of the box as these do (yep, they are actually upside down, not designed that way in this case). More worrying is that the dust caps on the cone-center seem to be missing...
Reid Malenfant
30-08-2012, 22:07
More worrying is that the dust caps on the cone-center seem to be missing...
I didn't spot that, but I reckon your are right Dave :rolleyes: Looking at them now it does tend to look like the pole pieces :eek:
Don't go there... Simples :cool:
icehockeyboy
30-08-2012, 22:07
DJ-ing huh? tweeters will be soft and the ferro-fluid may be thickened. Cabs may be shagged and heaven knows what the bass units will be like with all that pumpin' bass going through them for thirty years :eyebrows:
Seriously, I wouldn't bother. They weren't "that" good back then, although the agressive presence and treble made for an exciting listen on a quick dem and/or review. If you can get them in good order for £75 or so, then ok, but I wouldn't pay more unless they are mint and used carefully by one owner... By the way, at the time we used to recommend buying the pair demo'd to you, as no two were ever quite the same for various reasons.
Looks to me like the guy was a "bedroom DJ" there's no way he could take that gear on the road, well at least not any of the speakers.
Still might have pushed them too far though, so I'd say avoid"
These could be 737R's, but the 770mk3's had the tweeter very close to the top of the box as these do (yep, they are actually upside down, not designed that way in this case). More worrying is that the dust caps on the cone-center seem to be missing...
Didn't think the dust caps did much,other than keep dust out.
Reid Malenfant
30-08-2012, 22:12
Didn't think the dust caps did much,other than keep dust out.
Which happens to be very helpful I might add ;)
Like engines which have air filters, speakers have dust domes to stop the crap getting into the motor :)
Just a thought...
I'm 99% sure they are 770's ;)
http://3.bp.blogspot.com/_Joow7uBCK_E/TLmv5C53SfI/AAAAAAAACqw/xJnOC0F1OXA/s1600/%2B770%2Bmk%2B2%2Bcool%2Bangle.jpghttp://is00.thegumtree.com/image/extrabig/149326236.jpg
Rare Bird
30-08-2012, 22:37
They are '770. II' (upside down ones i the right pic)
Beobloke
31-08-2012, 08:07
They are indeed 770s - the 707s were actually an 'upside down' design so if you turned a pair upside down they'd look the right way up (apart from the writing, obviously!)
I'd give them a wide berth - they look knackered and the chap selling them doesn't exactly inspire confidence with his descriptions or photographs.
Oh, and dust caps do MUCH more than just keep dust out!
dantheman91
31-08-2012, 08:24
They are indeed 770s - the 707s were actually an 'upside down' design so if you turned a pair upside down they'd look the right way up (apart from the writing, obviously!)
I'd give them a wide berth - they look knackered and the chap selling them doesn't exactly inspire confidence with his descriptions or photographs.
Oh, and dust caps do MUCH more than just keep dust out!
Hi
Wise opinion chaps im gonna take everyones advise and leave them. to be fair they have probobly been thrashed throughout there live so i think its a fair discision.
They are indeed 770s - the 707s were actually an 'upside down' design so if you turned a pair upside down they'd look the right way up (apart from the writing, obviously!)
I'd give them a wide berth - they look knackered and the chap selling them doesn't exactly inspire confidence with his descriptions or photographs.
Oh, and dust caps do MUCH more than just keep dust out!
Please tell more.
I ued a pair without out one for years which seemed fine.
As it had the grill on i thought that was enough.
I'm 99% sure they are 770's ;)
http://3.bp.blogspot.com/_Joow7uBCK_E/TLmv5C53SfI/AAAAAAAACqw/xJnOC0F1OXA/s1600/%2B770%2Bmk%2B2%2Bcool%2Bangle.jpghttp://is00.thegumtree.com/image/extrabig/149326236.jpg
The 770's you have pictured have the wrong tweeters fitted. The originals had what I believe to be the Audax unit with circular surround. These you've posted on the left are Vifa ones I think. More reason to avoid these things unless they have really good providence to them...
I've got some 'upside down' Missions
http://i562.photobucket.com/albums/ss68/Lodger56/missions.jpg
Mr Kipling
31-08-2012, 21:50
Been going to ask about Mission speakers. Are the 700s any good? They don't seem to go for much.
Mine were £9 :eyebrows: they're ok if not driven to silly levels
Original 700's will probably need the bass units re-foaming now unless these have already been done and possibly a recap too. I love these in good order though and the slightly old fashioned forward, "paper cone" kind of presentation is right up my boulevard :)
A nicely made box and an "accidentally on purpose" upside down driver arrangement works well.
The 770's you have pictured have the wrong tweeters fitted. The originals had what I believe to be the Audax unit with circular surround. These you've posted on the left are Vifa ones I think. More reason to avoid these things unless they have really good providence to them...
The post was more for reference than accuracy Dave and simply to illustrate that the speakers in the OP's pic were in fact 770's. Some of the following commenter's seem not to have noticed the pics however. Funny old world... :scratch:
Mr Kipling
31-08-2012, 22:04
Mine were £9 :eyebrows: they're ok if not driven to silly levels
Just "ok"! I want to be wowed! WOWED!
Yes Dave, the ones I've seen needed surrounds. What sort of presentation do they have? Thanks.
Rare Bird
01-09-2012, 09:42
The 770's you have pictured have the wrong tweeters fitted. The originals had what I believe to be the Audax unit with circular surround.
:nono: that was the '737'..you mean seas tweeter ;)
Thanks for correcting me Andr'e :)
dantheman91
01-09-2012, 11:09
737's any good??
Rare Bird
01-09-2012, 11:29
The version of the '737'with the Audax tweeter (Pink/White speckles on rear of cabinet) i found the best sounding to my ears..If you like the look of the '737' hammertone baffleboard finish & like the seas tweeters (slits in the face plate) like the ones used in the early '770' models there's always the '770S' speaker but they are rare these days
Beobloke
03-09-2012, 07:55
Please tell more.
I ued a pair without out one for years which seemed fine.
As it had the grill on i thought that was enough.
The dust cap is an integral part of the drive unit. Yes, there are designs that do not use them but these will have been designed that way. If a driver has been designed with a dust cap in place then removing it will affect the mechanical damping of the drive unit - effectively the area under the dust cap and in the centre of the voice coil acts as a 'piston', the pressure in which helps to slow the driver down as it approaches the limits of its excursion. Remove the cap and whack up the volume and you'll hear some unpleasant noises!
Dust caps also affect frequency response. By removing one you will likely put a big dip in the response at a particular frequency. Also, as one moves up towards upper midrange frequencies, the size and shape of the dust cap actually helps to determine upper frequency extension and rolloff. This should not be an issue in a multi-way system but in a full range driver it makes a surprising difference. The ultimate example of this is the use of a twin cone or 'whizzer' in place of a conventional dust cap to extend treble response - these are evil abominations that have no place on a hi-fi loudspeaker, in my humble opinion!
By all means experiment, but my advice would be - if they're meant to be there; leave 'em there!
The dust caps also affect the phase performance of the driver at its highest frequencies. I've been told to remove the ones on my BC2 drivers, as this driver is a bit rough over 1kHz and the dust cap contributes to this - the original SP1 driver which was based on the BC2 unit in terms of voice coil size didn't have a dust cap.
Andr'e, the 737R's I had for a short while had a small dome tweeter I'm sure, not a fancy larger dome IIRC. The bass and midrange was fine to excellent IMO, but the tweeter was a bit ragged and set too high in level.
The original 700's are better than HB1's in my opinion and when current, were the first of a whole new breed of efficient cheapies. We sold hundreds of pairs of these and I thought they looked smart in their American (red tinged) walnut, white baffles and foam fronts. The sound is a little more "upper mid" led than many of the speakers which followed, like the mid 80's best selling KEF Coda 3's and so on, but they never got in the way of the music and entertain hugely I think, being low in boxy colouration and not at all rough in tone. Modern bedroom-dj "monitors" tend to have a significantly lifted upper mid, so the 700's will actually sound refined compared to these I suspect :)
dantheman91
11-09-2012, 08:24
What about the Mission 700S any good?
The dust cap is an integral part of the drive unit. Yes, there are designs that do not use them but these will have been designed that way. If a driver has been designed with a dust cap in place then removing it will affect the mechanical damping of the drive unit - effectively the area under the dust cap and in the centre of the voice coil acts as a 'piston', the pressure in which helps to slow the driver down as it approaches the limits of its excursion. Remove the cap and whack up the volume and you'll hear some unpleasant noises!
Dust caps also affect frequency response. By removing one you will likely put a big dip in the response at a particular frequency. Also, as one moves up towards upper midrange frequencies, the size and shape of the dust cap actually helps to determine upper frequency extension and rolloff. This should not be an issue in a multi-way system but in a full range driver it makes a surprising difference. The ultimate example of this is the use of a twin cone or 'whizzer' in place of a conventional dust cap to extend treble response - these are evil abominations that have no place on a hi-fi loudspeaker, in my humble opinion!
By all means experiment, but my advice would be - if they're meant to be there; leave 'em there!
Cheers adam.
Always thought it was literally a dust cover.
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