ModWright Instruments KWA 100 Manual de instrucciones descargar pdf

Australian

ON TESTON TEST

tube ‘Mu’ stage and designer of the world’s

best modiﬁ cation kit for the Dynaco ST-70.

According to Dan Wright, at the heart of the

ModWright KWA 100 and KWA-100SE power

ampliﬁ ers is a single voltage gain stage called

the ‘Solid State Music Stage’ that was devel-

oped by Kimmel. I don’t know how much of

Kimmel’s handiwork is incorporated in the

KWI 200, but ModWright’s website says of

the KWI 200 that it was ‘styled after the LS

100 and KWA 100SE in look and overall di-

mensions’ and that it, too, uses a ‘Solid State

S company Modwright is owned

by Dan Wright, which makes it

pretty obvious where the ‘Wright’

bit came from, but if you’re

wondering about what the ‘Mod’ bit means,

it came about because Wright started out in

business by modifying other manufacturer’s

products. In fact he still does so, in the form

of a number of highly-regarded modiﬁ cations

for the Oppo BDP-83, BDP-95, Sony XA-

5400ES and the Logitec Transporter, amongst

other products. As many of his modiﬁ cations

involved substituting passive components

such as capacitors, Modwright designed some

of its own capacitors and now does a roaring

trade in selling them to the DIY audiophile

community. One of his most popular lines

is a range of ‘M-Series’ capacitors that have

oil-impregnated metallised polypropylene

dielectrics and pure copper tinned leads.

THE EQUIPMENT

Dan Wright isn’t the only designer behind

ModWright’s extensive range of power and

integrated ampliﬁ ers and preampliﬁ ers. He

also commissions external designers, one

of the most famous of which is none other

than Alan Kimmel, creator of the vacuum

Music Stage.’ Perhaps most signiﬁ cant is that

the ‘KW’ in KWI stands for Kimmel/Wright.

Although the KWI 200 supplied to us for

review was the basic offering—an integrated

ampliﬁ er—it’s possible to optionally add a

built-in DAC and dual MC/MM phono stages.

The idea, according to ModWright, is that ‘the

KWI 200 is designed to be the one-box solution

for the modern age. Just add speakers and power!’

Before I opened the casing to check the

internals, I thought the KWI 200 was very

much an ‘old-school’ design, but it didn’t

take long for me to discover that it’s anything

but. For example, volume control is imple-

mented not by a standard rotary potenti-

ometer but instead via a digitally controlled

analog volume control with a buffered input

to the Solid State Music Stage. What is cer-

tainly ‘old school’ is that the KWI 200 has a

hugely overdesigned linear power supply, at

the heart of which is a massive 1.5kVA toroi-

dal power transformer. Storage and smooth-

ing is the domain of two capacitor banks that

between them provide more than 234,000µF

microfarads of fall-back power. The output

stage employs four pairs of MOSFET devices

per channel. Curiously, I could not see any

of ModWright’s distinctive white capacitors

Power Output: Single channel driven into 8-ohm,

4-ohm and 2-ohm non-inductive loads at 20Hz,

1kHz and 20kHz. [Modwright KWI 200]

Modwright KWI 200

INTEGRATED AMPLIFIER

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Pagina 1 - Modwright KWI 200

26AustralianON TESTON TESTtube ‘Mu’ stage and designer of the world’s best modiﬁ cation kit for the Dynaco ST-70. According to Dan Wright, at the hear

Pagina 2 - LAB REPORT

27ON TESTON TESTavhub.com.auModwright KWI 200 Integrated Ampliﬁ erwhich is short for ‘Total Silent Protection’. In the event that the TSP circuitry de

Pagina 3 - SESSIONS

28AustralianModwright KWI 200 Integrated Ampliﬁ erON TESTHi End, supplied our review ampliﬁ er with the metal remote control… and what an object of be

Pagina 4 - ON TESTON TEST

30AustralianON TESTON TESTModwright KWI 200 Integrated Ampliﬁ ercaptivated by all the works on it, I was blown away by the Praeludium in G Minor, whic

Pagina 5 - TEST RESULTS

90AustralianLAB REPORT LAB REPORTLAB REPORTModwright KWI 200 Integrated Ampliﬁ erTEST RESULTSNewport Test Labs’ measurements of power output showed th

Pagina 6

92AustralianLAB REPORTModwright KWI 200 Integrated Ampliﬁerthe 1dB downpoints at 2.2Hz and 180kHz, and the 3dB downpoints at 190Hz. Channel balance wa

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ModWright Instruments KWA 100 Manual de instrucciones

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