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KEF Concord 1V How do they sound?

 
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henryc
Intermediate Contributor 25+


Joined: 01 May 2006
Posts: 39
Location: Gloucestershire

PostPosted: Tue May 30, 2006 1:28 pm    Post subject: KEF Concord 1V How do they sound? Reply with quote

Does anyone have a pair?
What do they sound like?
Quite different to many KEF's
All Views welcome please as I may be able to get a pair in good nick
but too far away to audition them.
All the best
Henry

Original KEF discription
The Concord IV


KEF Concord IV is a free-standing loudspeaker system incorporating many features resulting from KEF’s programme of advanced research and development.

Concord IV offers precise and stable stereo reproduction for the serious listener together with ample volume for the most extreme domestic use. A maximum acoustic output of 107dB spl can be obtained on programme peaks.

Concord IV Features:

High power handling capacity: 100 watts per channel.
High acoustic output: 107dB spl on programme peaks.
For use with amplifiers of more than 10 watts per channel.
Interchangeable grille covers in black, brown, beige, blue, red green or grey to suit your decor.

Concord IV Specifications

Frequency range 60Hz to 20kHz ± 3dB at 2m on reference axis (-10dB at 40Hz and 25kHz)
Directional characteristics Horizontal: within ± 2dB of axial response up to 10kHz for ± 20º
Vertical: within ± 2dB of axial response up to 20kHz for ± 5º
Maximum output 107dB spl on programme peaks under typical listening conditions
Character sensitivity level 87dB spl at 1m on measuring axis for pink noise input of 1W
Distortion Second harmonic:
less than 2% from 20Hz to 80Hz
less than 1% from 80Hz to 20kHz
Third harmonic:
less than 1% from 20Hz to 20kHz
Measured at 1m on measuring axis at mean spl of 90dB, anechoic conditions
Enclosure type Closed box
Programme rating 100W
Maximum continuous sinusoidal input 28V rms from 60Hz to 2kHz reducing 10Vrms from 2.5kHz to 20kHz
Minimum amplifier requirements 10W
Nominal impedance 8 ohms
Resonance frequency 68Hz
Total system Q 0.8
Dimensions 692 x 280 x 315 mm
Weight 12.7kg (28lb)
Internal volume 38 litres
Finishes Choice of black or brown plinth and top with black or brown grille fabric as appropriate. Beige, blue, red, green or grey grille covers available as optional accessories.


Concord IV Benefits

The addition of quality loudspeakers to an existing rack system or music centre - or even a portable radio - will dramatically improve sound quality.

As loudspeaker specialists, KEF concentrate on the design and production of high fidelity loudspeakers, and have employed the latest computer aided analysis techniques to develop Concord IV.

With and amplifier output of as little as 10 watts per channel, Concorde IV will produce more than enough volume to fill a generous sized room. With larger amplifiers, considerably louder volume levels can be achieved whilst maintaining realistic tonal quality.

Concord IV is a medium-sized (38 litres) loudspeaker system combining a 25mm soft dome tweeter with two 200mm bass units to give extended bass performance down to 40Hz.

The two identical bass units are arranged to work together over the lower part of the frequency range ensuring reduced distortion and remarkable power handling capability.

To obtain an even distribution of sound a new filter system progressively reduces the output of the lower bass unit above 200Hz. At crossover frequency only one bass unit is operating with the tweeter.

To allow the sound to reach the listener directly without troublesome reflections from walls, floor ceiling the drive units are arranged within the enclosure so that the full frequency response is enjoyed when the loudspeakers are positioned between 9” and 12” from the floor.

Optional stands, the ULS 40 and 60, allow the speaker to be conveniently and elegantly positioned.

Concord IV can be easily matched to any home decor scheme with the moulded base and top available in either brown or black. In addition, interchangeable grille sleeves are supplied in a choice of seven colours.

http://www.kef.com/history/1980/concord4.asp
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ColinR
Über Contributor 1000+


Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Tue May 30, 2006 7:46 pm    Post subject: Reply with quote

Quote:
Does anyone have a pair?


Yes.

Quote:
What do they sound like?


Quite reasonable, but there are problems in the upper midrange and treble areas due to the upper bass-mid is doing too much work lower down and the tweeter can be a bit "spitty" depending upon program material.

Look at the crossover schematic to see why.

http://www.hifiloudspeakers.info/Anatomy/Crossovers/ConcordIV/ConcordIVCrossoverIndex.html

So to give them a hard time put on some Joni Mitchell Cool .

Quote:
I may be able to get a pair in good nick


I've got a lovely black pair in the loft, with spare brown covers plus a spare pair of bass-mids, plus instructions, plus boxes if anybody wants to visit and give me a reasonable amount of cash Laughing .

Well none of you other buggers have turned up to take away any of my "list of spares" so I'm advertising here Very Happy .
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henryc
Intermediate Contributor 25+


Joined: 01 May 2006
Posts: 39
Location: Gloucestershire

PostPosted: Tue May 30, 2006 7:57 pm    Post subject: Reply with quote

How disrespectful we are Colin
Fancy not taking you up on yer offers!
Thanks for the info ,superb as usual.
Where do you live?
Maybe I can hoover up yer spares
Tell us what you have again
All the best
Henry
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ColinR
Über Contributor 1000+


Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Tue May 30, 2006 8:40 pm    Post subject: Reply with quote

Quote:
2km trip from J14 M6


I've said it already Laughing , any more specific and my "spares" would have already been sold on ePay by Mr Thief Very Happy .
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