Altec Utility Cabinet

Hi!

I?m sure you all know the picture of John Lennon beside an Altec-Monitor at AbbeyRoad-Studio.
http://i132.photobucket.com/albums/q...esinstudio.jpg

That?s a cabinet that?s look i like very much since i saw one in the 60?s.

Can anybody tell if it would suit a 604E in a good way? Of course i know it can?t produce any kind of deeper bass - but what does it to the upper bass and lower mids!?

I don?t know - and didn?t find precise informations - what kind of 604 it usually housed?
What i know is, AbbeyRoadStudios switchged to Tannoys from around ?68 or so because they didn?t like the treble of the 604. Who knows - i for myself used Tannoys over 10 years and i would never switch back again after listening to the 604E in 620 Cabinets.
I like them especially because of the treble . . . :-)

best from Germany, Klaus

Bad link and don't recall which cab..........

GM

Quote:

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Originally Posted by GM

Bad link and don't recall which cab..........

GM

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strange . .

I?ll try again:

http://i132.photobucket.com/albums/q...esinstudio.jpg

I found it here in the forum.

And i found an answer from Steve Mac:

"It was the 605 that EMI qualified for monitoring."

In an Altec-paper i read of the 604E to use in this cabinet . . i guess it?s too small, isn?t it? Think it?s a 612.

best, Klaus

Yes acording to those who red the book it was a 605 in a 612 cabinet. The 604 super E
was also very popular with recording studios at that time also in a 612 cabinet.

I'll try to fix that picture.

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Quote:

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Originally Posted by LICORNE

Yes acording to those who red the book it was a 605 in a 612 cabinet. The 604 super E
was also very popular with recording studios at that time also in a 612 cabinet.

I'll try to fix that picture.

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Hey Licorne!

Thanks! Do you have any idea wether they modified the xover for that smaller cab?

best, Klaus

Quote:

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Originally Posted by GM

Bad link and don't recall which cab..........

GM

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Hi again, GM!

Sorry, i forgot: thank you for your reply, of course! (i was somewhat irritated about the picture . . ;-) )

best, Klaus

Here is the picture.


http://www.hostboard.com/forums/hbmc.../2008/08/1.jpg




http://www.lansingheritage.org/image...itor/page2.jpg


http://www.lansingheritage.org/image...ome/page24.jpg

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OK, wasn't sure if that was the one. Anyway, either adding a bit of LF boost or some baffle step compensation and shelving the HF a bit more will in theory turn it into a slightly better sounding version of the 605. That, or drive it with a high output impedance amp similar to those the original duplexes were 'voiced' with.

GM

Quote:

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Originally Posted by GM

OK, wasn't sure if that was the one. Anyway, either adding a bit of LF boost or some baffle step compensation and shelving the HF a bit more will in theory turn it into a slightly better sounding version of the 605. That, or drive it with a high output impedance amp similar to those the original duplexes were 'voiced' with.

GM

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Hi GM!

Thanks for your reply. At the moment i use an AudioResearch D76A - which isn?t too bad with the speakers and an updated N1500A (just replaced parts - no phasecompensation) - and two switching-amps with internal xover-option using a DSP (and time-delay).
Also i use experimentally 2 EV XEQ2 (using time-delay) with the switching-amps.
That runs very well - but i was just attracted by this cabinet . . . :-)

What i always read is to stay at least with the volume of the 620 cabs - maybe i?ll apply the look of the 612 to the 620 . . ;-))

best, Klaus

Greets!

You're welcome!

Basically, within reason the cab size only affects the BW below the driver's mass corner (2*Fs/Qts), so 'BIB' ('bigger is better', at least up to Vb = Vas) rules as to how wide a cab alignment's gain BW is, not to mention allows much more tuning flexibility, so if you use a 'sub' or only are interested in the human vocals BW, then you don't need a cab larger than the 612 or a tuning < its ~44 Hz.

I agree, scaling up a 612 to preserve its proportions would look kind of cool in an industrial chic sort of way. :cool: At a glance, scaling it up to an A7's 30" width increases net Vb to around 12 ft^3 if I did the math correctly.

Anyway, please post some pics, design details, performance impressions if you do it.

GM