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Vintage Monitor Audio MA 4 Speaker (Closed)

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Thu Jan 04, 2018 11:04 pm

Monitor Audio MA 4 specification :

Frequency response: 45-18,000Hz +2.5dB.
Recommended Amplifier Rating :15 watts to 75watts
Impedance: 8 ohms nominal.
Crossover: at 3-21cHz, basically 18dB/octave 9-element.
Sensitivity: 12 watts for 96dB at I metre.
Maximum level: 103dB at 1 metre.
Dimensions: 694 x 316 x 280rrun (23+ x 12+ x 11 inches).
Weight: 16kg (361b)

Review by JOHN BORWICK

            This is a two-way speaker design with a KEF B1039 220mm (8-inch) bextrene cone unit, crossing over at 3.2kHz to an Isophon 33mm (1-inch) tweeter with high power voice coil specially made for Monitor Audio. The main driver is centred in the bottom half of the cabinet and the bass reflex principle has been employed. The port emerges near the top of the enclosure and consists of a 50mm cylindrical duct extending about half way back into the cabinet. The dome tweeter is mounted very close to the main driver, which has advantages from the listening point of view. It is offset from the centre line, to the left in one speaker of the matched pair and to the right in the other.

           The review speakers were beautifully finished in teak veneer on all four sides and also the front, though this will normally be hidden by the grille cloth. This is of black material stretched over a chipboard frame having cutouts to clear the drive units and port. Six press-studs make a secure fitting on to the cabinet, which is sealed at all edges with the drivers bolted to the front panel. The rear face of the main driver magnet is pressed hard against a bracing board attached to the back panel and the whole enclosure has a thick bituminous lining to damp out panel resonances. There are foam pads to reduce standing waves and a loose roll of polyester wadding gives critical damping of the bass resonance.

             The musical quality from the MA4s was preserved up to very high sound levels and, by the time any harshness was introduced owing to overdriving, all sensible people would have said the music was already too loud for comfort. The makers quote a maximum sound pressure level of 103dB at 1 metre, which is very high by domestic listening standards. They recommend an amplifier power rating between 15 and 75 watts per channel. I would not quarrel with this, except to say that a 15-watt amplifier would have little power in hand to cope with transient peaks. I used amplifiers rated at 40 and 60 watts. The MA4 sensitivity is a little above average, one of the advantages of reflex loading over infinite baffles, and this helps to produce the wide choice of amplifier power ratings.In terms of directivity, the MA4s are no more or less problematical than most speakers on the market.

               To sum up, the Monitor MA4 speakers are well designed and handsomely put together. There are bigger (and better) loudspeakers but the sound quality is musically very satisfactory and this size is easily the most popular at present. I can visualize no problems of matching to a wide range of amplifiers—incidentally the 8 ohms nominal impedance is very nearly the lowest value at all frequencies—and room positioning should be straightforward, i.e. raised off the floor and preferably out a little from the corners. In money terms, the speakers represent above average value.

*These are the 1970’s originals and employ the very high specification KEF B200 - SP1039 bass/mid driver, the same driver found in the legendary KEF model 104 & 104aB*



Raj-0126657671

Original Pictures below :

Vintage Monitor Audio MA 4 Speaker (Closed) Img-2011

Vintage Monitor Audio MA 4 Speaker (Closed) Img-2010

Vintage Monitor Audio MA 4 Speaker (Closed) Img-2013

Vintage Monitor Audio MA 4 Speaker (Closed) Img-2012


Last edited by rasenthiran on Mon Dec 10, 2018 9:16 pm; edited 3 times in total
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Wed Jan 17, 2018 3:24 am

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Fri Mar 02, 2018 9:04 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Mon Mar 19, 2018 8:32 pm

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Thu Apr 05, 2018 9:57 pm

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Thu Apr 19, 2018 3:57 am

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Tue May 08, 2018 8:36 pm

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Wed May 16, 2018 8:23 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Tue May 29, 2018 10:32 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Fri Jun 08, 2018 3:21 am

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Sat Jun 16, 2018 4:40 am

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Sat Jun 30, 2018 4:35 am

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Thu Jul 12, 2018 8:43 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Post by rasenthiran Tue Aug 14, 2018 8:56 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Fri Aug 31, 2018 4:05 am

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Wed Sep 05, 2018 8:29 pm

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Tue Sep 18, 2018 8:55 pm

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Thu Oct 04, 2018 3:31 am

up
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Wed Oct 10, 2018 12:18 am

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Fri Oct 26, 2018 12:33 am

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Thu Nov 08, 2018 8:53 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Fri Nov 16, 2018 9:03 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Thu Nov 22, 2018 11:36 pm

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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Vintage Monitor Audio MA 4 Speaker (Closed) Empty Re: Vintage Monitor Audio MA 4 Speaker (Closed)

Post by rasenthiran Tue Dec 04, 2018 1:23 am

bump
rasenthiran
rasenthiran
Frequent Contributor
Frequent Contributor

Number of posts : 2503
Age : 43
Location : petaling jaya
Registration date : 2009-03-04

Character sheet
Source(s): Parasound Zdac/Marantz Cd 63 KI/Sony X505ES/
Amplification: Exposure Super 10/Classe DR-6/Sony TA N90ES/Sansui AU 777 /AU-719/Yamaha RXV-863 Receiver
Speakers: NHT Classic/Monitor Audio Studio 2/Heybrook HB 1

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