ALTEC LANSING A5 Specifications Altec

ALTEC LANSING A5system

	* Released in 1945
A5 (first half of 1975)	Price unknown (1 unit, around 1975)
A5 (from late 1975)	¥ 632,500 (1 unit, around 1975) ¥ 655,000 (1 unit, around 1977)
A5B/MRII594A	Price unknown (1 unit, around 1988)
A5C/MRII594A	Price unknown (1 unit, around 1988)

Commentary

Altec's representative speaker system.

The A5 is one of Altech's speaker systems for theaters named Voice of the Theater.
The Voice of the Theater released variations from A1 to A6 in 1945, followed by A7 in 1954 and then A8, A9, and A10, for a total of 10 types.
In 1953, the Voice of the Theatre series received world standard approval from the Academy of Motion Picture Arts and Sciences.

In Japan, it is later than the A7, and while the A7 is published from the 60 s catalog, the A5 was published only after 1975.

According to Stereo Sound magazine, the A5 high band horn was originally a multi-seller horn. However, it seems that Elektri, which was an agent, changed it to 311-90 in consideration of using it for home use. I don't know why, but in Japan, A5 has been sold only as A5system for a long time, and even if the unit used was changed, the product name remained the same (in overseas, there were model numbers such as A5, A5A, and A5-X).

A5 (around the first half of 1975)
According to the catalog in Japan which the manager has, it is A5 of the earliest period.

A 38 cm cone woofer 515B is used for the low range, and a driver 291 16 a and horn 311 90 are used for the high range.

The network uses N500F, and the enclosure uses 825B.

A5 (from late 1975)
It is A5 which is listed in the single item catalog of A5 and A7.
The photos look the same as the 1975 one, but the units and enclosures are different, and the configuration was changed in the second half of 1975 Central Catalog.)

A 38 cm cone woofer 515B is used for the low range, and a driver 288 16 g and a horn 311 90 are used for the high range.

The network is N500F in the second half 1975 catalog and the enclosure is 828B.

* The network was changed to N500F-A in the single item catalog in 1976.

A5 (1980 - 1981)
It is A5 which appeared in the domestic catalog from 1980 to 1981.

The picture is the same, but there was a configuration change in the two catalogs, the enclosure was 828C in the 1980 catalog and 828E in the 1981 catalog.

A 38 cm cone woofer 515C is used for the low range, and a driver 288 16 h and a horn 311 90 are used for the high range.

A5B/MRII594A A5C/MRII594A
A speaker system combining A5 with manta ray Rayhorn MRII594A.

The difference between A5B and A5C is high frequency and network. A5B uses driver units 288-8L and network N1285-8B, while A5C uses driver units 299-8A and N500-8H.
The A5B N1285-8B is a crossover switching type, and the A5C 299-8A uses a pass-culite diaphragm.

A 38 cm cone woofer 515-8G is used for the low range and 828H is installed in the enclosure.
The enclosure operates as a bass reflex at 120 Hz or less and as a horn at 120 Hz or more. 19 mm thick particleboard is used for the plate material. The exterior features a Theater Gray sputter finish.
In addition to mounting the horn and fixing it on the top surface, it can also be mounted inside the enclosure.

A red / black pentagonal binding post is used for the terminal, and the vibration system moves to the front when a positive signal is supplied to the red terminal.

Model Rating

Method	2-way, 2-speaker, horn + bass reflex system, floor type
Configuration
Model Name		Low pass	High range	Network	Enclosure	Impedance	Crossover	Allowable input
US	A5(1945):	515	288+ H805/H1005/H1505	N500C	H110	12 Ω	500Hz	-
	A5-X:	515B	288C+ 805B/1005B/1505B	N500C	825	16 Ω		-
	A5-X: (1975)		288-16G+ 805B/1005B/1505B	N500F	828B			60W
	A5A: (1980)	515E	288-16K+ 805B/1005B/1505B	N500F	828E
	A5A: (1983)				828G			-
In Japan	1975 First half :	515B	291-16A+311-90	N500F	825B	16 Ω	500Hz	50W maximum
	Late 1975 :		288-16G+311-90		828B			75W (Continuous Program)
	1976:			N500F-A				60W (Continuous Program)
	1977:							75W (Continuous Program)
	1980:	515C			828C
	1981:				828E
A5B/MRII594A:		515-8G	288-8L+MRII594A	N1285-8B	828H	8 Ω	500, 800, 1.2 kHz	-
A5C/MRII594A:			299-8A+MRII594A	N500-8H			500Hz	75W (AES Standard) 150W (program rating)
Frequency characteristic	A5A (overseas, 1980) : 40 Hz to 15 kHz A5 (late 1975 / 1976) : 30 Hz to 16 kHz A5 (1977) : 30 Hz to 15 kHz A5 (1980/1981) : 30 Hz to 16 kHz A5C/MRII594A : 35 Hz to 20 kHz
Output sound pressure level	A5X (Overseas, 1975/1978) : 104 dB SPL A5 (1975 Latter Half / 1976/1980/1981) : 106 dB (New JIS) A5C/MRII594A : 103 dB SPL (1W, 1m, 35 Hz to 20 kHz)
Maximum power output	A5C/MRII594A:122.2dB-SPL(1m)
External dimensions	A5 (early 1975 s) : 762 mm wide x 1,470 mm high x 610 mm deep A5 (late 1975 / 1976/1980/1981) : Width 762x Height 1,470x Depth 612 mm A5B/MRII594A : Width 760x Height 1,397x Depth 610 mm (listed in overseas catalog) A5C/MRII594A : Width 762x Height 1,378x Depth 610 mm (same as A5B/MRII594A in the overseas catalog)
Weight	A5A (overseas, 1983) : 109 kg (805B), 110 kg (1005B), 116 kg (1505B) A5 (1975 first half / second half / 1976) : 75.6 kg A5(1980/1981):84.6kg A5B/MRII594A : 91 kg (listed in overseas catalog) A5C/MRII594A : 82 kg (same as A5B/MRII594A in the overseas catalog)

ALTEC LANSING A5system

Commentary

Model Rating