Western Electric 106A

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hejsan

Well-known member
Joined
Oct 3, 2005
Messages
406
Location
Iceland
Hi there.
A friend just got a pair of these amplifiers and is looking for info on it.
106a_s.JPG

Model name is Western Electric 106A.
Does anyone know anything about it? Manuals? Reputation?

I found some schematics here:
http://www.wowhififever.com/WE106A/Western Electric 106A.htm
But the page is in chinese or some other asian language I don't understand.

Is it some kind of cinema amp?

Thanks for any info,
hejsan
 
radio broadcast line amps from the late 1930's. the pair of them would buy you a new car in the states, or asia.
 
Wow, so I guess they've aquired that audiophile status :shock:
I've got to ask him what he got it for, allthough he has this habit of getting awesome stuff for free..

So this is not a power amp, or? What is it good for?

Thanks for the reply :guinness:
 
preamp or line amp. it's good for selling to someone else, is what it's good for. they've had collector status for decades already. you probably can't afford the tubes anyway.
 
> So this is not a power amp, or?

Sure. Half-Watt at 4 ohms from terminals 13-14. That is probably why a pair is worth as much as a car.

The main function was to put 0.1 Watts down a 500 ohm line, and loaf doing it.

> the page is in chinese

Google mechanical translation. Love that "cross-linked bovine output".

"The West," the former treasures-106 - A large Deconstruction
Author: Liang Wenguang
The "World Danji" reprint

Western Electric
Western Electric "West," this name has resounded through the half-century, in the past, business telephone systems and theatre audio equipment, are mainly large-scale production and installation of specialized equipment; As for the civilian sound "West," even less involved.
If the West, the reputation and Marantz and Mr King plans two "M" Compared; West, it becomes all the more lofty status with the sense of mystery.
Two "M" with the well-known by the public, based on brand-name confidence, and secondary market transactions "easy sell" and hedge against inflation, can drive home the use of defying the purchase of expensive, so even lay the secondary market Chengjie Li.
And West, ancient calendar has been able to stand steady "reach" the status of enthusiasts is "Dream Lover" to pursue another level, the West, from early gall 300 B, 274A, 274B, 350B or early West, between your crew You have to "Fenshen home" or the fight I may not be enough money to buy a Western Reserve motor; even money can not buy, but also "touch" the word.
“Easy come . Easy go”
On the other hand, Western collectors and users of the M and two different users, that is, "Easy come. Easy go" of the West, this home is not appropriate to use them to buy not only sell more in the form Very few market liquidity, the West, the special-known models, the value has not publicly estimated the market price, while only private transactions of "Dark was at," then! ; ! Only their own knowledge; general Chugeqigan Zhanshou! Feiqi to your price, and all the faces of the West in the electrical design and production never modified, because it is professional equipment! Moreover, after several decades of devastation years, most of the machines appearance and health status has been , West Liangsheng, a kind of machine on the left only financially strong, bold and Shihuo Xinxi the hands of the people . This is not the general public by the pursuit of the "on the plane" level, but readers a little more understanding or more Chayufanhou also be a topic of pleasure, perhaps one day 106 - A and you
How about + ?(1) Figure (1)

(1) Figure (1)
(1b) Figure (1 b)
(1a) Figure (1 a)
(1c) Figure (1 c)
(2) Figure (2)
Lines of:
?(1a) WE 106-A
285E
150ohm
600ohm
Figure (1 a)
WE 106-A level before in the West, antique series ranks also do not account for the location of light, it is two independent mono cattle import and export of cattle before the class, is the importation of cattle 285 E can transfer into a 150 ohm or 600 ohm input . 310A, 0.4u 336A 185A? Input signal amplification of the five most 310 A, the oil quality capacitance 0.4 u cross-linked to four of the 336 A very directly to the output 185 A. 274A ?(1c) , choke 221H 8u , 8u , 32u ?(2) ; “?” Rectifier bile is 274 A map (1 c), full-wave rectification by the two chokes choke 221H and two of only 8 u capacitive filtering, the entire single-channel capacitance even before the filter can rely on all four groups of 8 u capacitance, That is, the total value of 32 u map (2) will be sufficient so that the whole machine work; can also accept the low exchange of "Tun" sound.

From experience, the design of the old antique machine normally filter capacitance values are far less than the new capacity, particularly in the professional equipment used by the filter amplifiers numerical always incredible; prove the technical design of the top mathematics, compared to the A new generation of head full of theory and Zhuo, and Hutianqiangdi the implementation of the new concept of goods equipment than is obviously the extreme. 20000u ? 1000 million surplus on the capacitance value justification, it seems that is infinite, as long as the exhaustion of the chassis of the space is met, then learned of the fine, "Tubao Friends" will follow suit and also Qingchuyulan, do a soil 7 guns Marantz has used the power of the 20000 u filter the total value. ! I would like to reason! ! If that is infinite countless dollars! ! Then! ; ? Today's designers work on Qingxian much in this design is that the art and science is not blind.

WE. 106-A 600ohm 30v ( RMS.) WE 106A
The author several years ago in the "Sound of fever," detailing the capacitance value theory, and now has no intention to repeat the old text, but because of this classic WE. 106-A in the design of numerical and parts distribution, a stunning wow, is this Apart from the hum-stage sound low to an acceptable level outside its analysis of the dynamic and I am afraid that many of today's brand-name machine to Fushouchenchen and, in 600 ohm maximum output is 30 v audio signal output (not distortion RMS.), The Some were recognized embarrassed after the push-speaking, WE 106A is an easy task.

?(3) Figure (3)
?(4) (4)
?(5) Figure (5)
: Surgery:
Most experienced several years of the decade-old antique, even if not yet to implementation of major surgery, but can not do without some of the illnesses, such as gall Block connection is bad or a switch contact problems are common. , , 40% To experience alone solve the above problem, will enable more than 40 percent of the old machine Huichun. 106A
This 106 A pre-inserted in the bile is not observed before, have found that all the blocks within the biliary metal contact has been severe oxidation, which connection is bad; must first clean the conductive contact map (3), to ensure that no adverse contacts Generate noise or current job instability (guts of the safety implications); because of this six gall valuable ah! , Recommend the use of small sand grinding David Tsui installed on the high-precision grinding machines, these six blocks bile carefully remove the grinding of the surface.


: Power input:
TS2, 24-25 ?; 105-115v?115-125v?, AC fuse?(?4 ), (5)-(5a) slo-blo.fuse, , , ?fuse, The second step is to identify the power import, export and import terminal position, the plug (4) in cattle near the location of the power a welding-TS2, No. 24-25 is the power input, or may choose to 105-115 v 115-125v, there is this AC power cattle imported before the series is a circular fuse blocks (Figure 4 lower left-hand corner), the plug (5) - (5 a) This is the first generation of antique slo-blo.fuse, large size And very good sound, is rare old fuse, as far as possible to avoid human error and spoil it.
-(5a) Fig - (5 a)
(6) Figure (6)

The output and input signal the location:
Output and input of the welding point is to use the same blocks, the plug (6), which blocks on the lower deck, according to the code word to identify the number of input and output contact (if not changed because of mechanics or machine error, then , Should have all the numbers on the number of route map is correct); course of the examination should be carefully checked on 106 A of the contact numbers are accurate, can connect the power cord, preferably with an ancient power lines, to preserve original flavor . RCA , ?1-2?600ohm,1-3?2-4?150ohm, 150ohm, , ?150ohm; 150ohm?150ohm 600ohm, , , ? Then connect RCA socket, welding the shelves is 1-2 No. 600 ohm ,1-3 or 2-4 is 150 ohm, for two parallel 150 ohm, group or single-use, so the parallel-group or single-use are 150ohm; series but only when used is 150 ohm and 150 ohm equivalent to 600 ohm, which is audio impedance calculations of the type, not the number of general terms, it is not to go into details.

The plug (1 b), another 5-7-8 series is due to the resistance and increase the input impedance, and can also reduce the sensitivity of this level before (but not to enlarge part of the total gain) and from 1-2 -- 3-4 entered into the cattle, the voices of more direct and real; if input from 7-5-8, the more resistance due to the impact of the importation of cattle and is the source impedance, sound performance in a little slower, perhaps more than a different Sound choice.

The plug (8) damage to the West, no sense of resistance, the internal resistance of the alloy made of the two groups are equal and reverse around the system to offset the formation of inductance and resistance of the alloy is mixed with a variety of metal refining From this variety of conductive metal elements of the resistance than ten times higher than copper or silver or more than 10 times (not W), this may be the diameter alloy resistance line of rough or Raoquan of the length of the numerical decision resistance Interestingly-line can be used welding (tungsten is not solder), this resistance line is very good sound, but very expensive price, and market demand for more and the proportion of low, it created such resistance line of the manufacturers Has been cut-off, is really a regrettable! , ?7-5-8 10kohm , ; , , , Of course, this domino-type resistance should be the replacement of damaged, but if it is determined not to use 7-5-8-10 kohm input resistance, it is the failure resistance can be removed abandoned, but I certainly can not escape their own personality, to find the And to respond with some resistance, to a clear conscience, more effort and time in the Buci.

?(8) Figure (8)
?(9) Figure (9)
?(10) Figure (10)
185A : West, 185 A cross-linked bovine output:
185A (9) , 600ohm?4ohm, 600ohm ?, 11-12;?13-14
4ohm 0.5w Monitor Output is part of the West, 185 A cross-linked bovine output map (9), there are two fixed output winding 600 ohm and 4 ohm, 600ohm before the class is the main output, welding-figure position is 11-12, and 13-14 is 4 ohm Only 0.5 w for Kam listen to Monitor speakers use.
 

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