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Last Edited:
13-Sep-2004

TYPE IMAGE
(Click to see Full-size)

RMS RATING

CONFIGURATION YEARS (APPROX.)

COST NEW

TUBES
(tech notes)
208 Scott_208_Front_tn.jpg (4803 bytes)

Scott_208_Rear_tn.jpg (5350 bytes)

32-wpc

Stereo Power Amp
piggy-backs onto Type 355 Tuner/Preamp
1961-1963 $130
Unique "raw" package format:

Dual-level inputs:
(1.5 & 2.5 volts)

Designed for either custom remote mounting or strapping across the back of Type 355 Tuner/Preamp;

Basic circuit design derived from the LK-72/299-C (minus the 12AX7 preamp section)

7 tubes:
(2) 6U8/6GH8
(Split-load phase inverters)
(4) 7591 outputs


(1) 5AR4rectifier

220(A)

18-watt

Monobloc Power Amp 1948-1953 $120
Scott's first Monobloc (basic power) amp:

(Also bundled with Type 120A preamp as the Type 214-A integrated combo)
 
Dual-level inputs:
(0.5 & 1.5 volts)

Octal power outlet for 120A "DYNAURAL" preamp

5 tubes:
6J5, 6SN7
(2) 6L6G outputs
5V4G rectifier

223

18-watt

Monobloc Power Amp 1953-1956 $75   
Low-cost Monobloc

4 tubes:

(1) 12AX7 AF amp/splitter
(2) 6L6GB outputs

5U4GA rectifier
232(A) Need Photo
See 232-B;
Below

32-watt

Monobloc "Laboratory"
Power Amp
1952-1955 $100
Distinctive rose-anodized chassis and maroon transformer cover;

Dual-level inputs:
 ( 0.5 & 1.5 volts);
variable damping control;

5 tubes:
(2) 12AU7 splitters
(2) 1614 (6L6) outputs

5U4GA

232-B

32-watt

Monobloc "Laboratory"
Power Amp
1955-1956

$100


Distinctive rose-anodized chassis and maroon transformer cover;

Dual-level inputs:
 ( 0.5 & 1.5 volts);

variable damping control;

5 tubes:
(2) 12AU7 splitters
(2) 1614 (6L6) outputs

5U4GA

240 Scott_240 tn.jpg (5119 bytes)

35-watt

Monobloc "Laboratory"
Power Amp
Class "A"
1957-1959 $140   
First Scott amp to use distinctive cast aluminum end-caps/cabinet w/logos and removable grill (also used on 280);


Dual-level inputs:
 ( 0.5 & 1.5 volts)
with level controls

70V output taps,
variable damping control

5 tubes:
(2) 12AX7 (floating para-phase inverters w/AC balance pot)
(2) EL34 (6CA7)
(1) 5U4GA rectifier


250

35-watt

Monobloc "Laboratory"
Power Amp
Class "A"
1958-1964 $160
Updated version of 240 without 70V taps and variable damping; new simplified cabinet, with "floating" front panel (not shown)

Dual-level inputs:
 ( 0.5 & 1.5 volts);
 with level controls;

added bias test terminals

A rack-mounted version was also marketed by the Instrument Division

5 tubes:
(2) 12AX7 (floating para-phase inverters w/AC balance pot)
(2) EL34 (6CA7)
(1) 5U4GA rectifier


265(A)

65-watt

Monobloc "Laboratory"
Power Amp
Class "A"
1953-1956 $200
Distinctive rose-anodized chassis and maroon transformer covers

Dual-level inputs:
 ( 0.5 & 1.5 volts);
 with level controls;

Variable damping control (from 30:1 to 0.5:1);

Variable
"Dynamic Power Monitor"
output limiter circuit
(from 8 watts to full power);

10 tubes:
(2) 12AX7 preamp/splitter'
(4) 1614(JAN)/6L6GC,
(1) 6080 (6AS7G mil spec) series pass regulator,
(1) 6AM8A dynamic power monitor

(2) 5U4  
45 lbs.
280

72-watt

Monobloc "Laboratory"
Power Amp
Class "A"
1957-1959 $230  
Final and most powerful  Scott monobloc;
distinctive cast aluminum end-caps/ cabinet w/logos and removable grill (also used on 240, see above);

 70V taps, variable damping control, "Dynamic Power Monitor" output protection & power supply circuit;

Dual-level inputs:
 ( 0.5 & 1.5 volts);
 with level controls

11 tubes:
(3) 12AX7 (floating para-phase inverters w/AC balance pot)
(1) 6AL5 Bias Rectifier
(1) 6BX7 Volt Regulator
(4) EL34 (6CA7) outputs
(2) 5U4GA dual rectifiers
290 Scott_290 tn.jpg (6525 bytes)

44 wpc

Stereo "Laboratory"
 Power Amp
1960-1961 $240
Final Scott Stereo (factory-wired) basic Power Amp
also see 4120;

used "floating" front panel cabinet (not shown)

Basic power amp section design derived from the
Type 250; Monobloc Amp
and
Type 272; Integrated Amp

Features: Bias meter with Tube selector
Input level controls,
large TR-12-2 output transformers


Dual-level inputs:
 ( 0.5 & 1.5 volts);

10 tubes:

(2) 12AU7 (floating para-phase inverters w/AC balance pots)
(2) 12AX7  

(4) EL34 outputs with individual (4) bias controls

(2)  5U4G rectifiers,

48 lbs.

LK-150 Scott_LK-150_tn.jpg (7385 bytes)

 58-wpc

Stereo "Laboratory" Power Amp

1961-1964 $170
Only Scott-Kit basic Power Amp:
used "floating" front panel cabinet (not shown)

selectable input levels
bias meter

8 tubes:

(2) 7199
(Split-load phase inverters)
(4) 6550 outputs

(2) 5AR4

For a detailed technical description see: John Byrns's H.H. Scott Amplifier Specifications

To view: Vintage H.H. Scott Kit Amplifier Table

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