Amps

SELMER AMPLIFIERS 1970 ONWARDS - THE "SV" SERIES

Selmer Zodiac 50 SV Head., courtesy of Cedric Jacobi, Germany.

COMBOS

• THE COMPACT 30 SV  (1971- 
  A very simple, 30 watt valve combo amp which was produced during the aluminium fronted period. Basic volume and tone controls were fitted. Two slightly different versions have been identified - a small cabinet version with top carrying strap and a single 12" Goodmans speaker, and a larger combo with twin 12" speakers and side handles fitted. The output was achieved using 2-EL506, 1-ECC83, and 1-ECC82, plus 5 silicon diodes. (The EL506 is an obscure valve, difficult to find nowadays. Its modern equivalent is a Model 7868 nine pin power pentode.) This model seems to have replaced the All-Purpose 30 in 1971. Price for the twin-speaker model was �85.
  
  
• THE COMPACT 50R SV REVERB   (1971-
  A combo produced by simply fitting a Treble n Bass 50 Reverb aluminium fronted amplifier into the top of a cabinet similar to the large Compact 30SV. Twin 12" speakers were fitted to handle the 50 watt output. This combo seems to have superseded the Treble 'n Bass 50 Reverb Combo which was introduced during the Black/Silver Period.
  
  
• THE ALL-PURPOSE TWIN 30
  The final version of the Twin Lead/Bass and All-Purpose budget combos, with the amp now mounted integrally into the front of the speaker cabinet. Equipped with twin Goodmans 12" speakers, two inputs, single volume and tone controls, plus bass and treble switches. Valve compliment - 1 x ECC83, 1 x GZ34, 2 x EL506 (See Compact 30 SV above), 1 x OC 71 transistor. This model appears in the 1970 catalogue at a price of �89-10-0, but it was replaced by the Compact 30 in 1971. Hence it is a rare amp nowadays.

(See also Gordon Heley's RESTORATION OF A SELMER ALL-PURPOSE TWIN 30)

AMPLIFIER HEADS

• THE TREBLE 'N BASS 50 SV
  This was, I think, the final version of the T'n'B and probably the least eye-catching with it's plain black cabinet and aluminium front, although the circuitry was identical to earlier models. Control panel configuration changed entirely but still 2 inputs per channel, each having volume, treble and bass controls. A presence control now also featured. Both this and the TnB 100 remained in production until at least the mid-1970's.
  Cabinet size 21" x 11.1/4" x 9.1/4", valve complement EL34 (2), ECC83 (4) and 2 silicon rectifiers. Price £74.0s.0d.
  
  
• THE TREBLE 'N BASE 50 SV REVERB
  Similar to the 50 SV above, but featuring a foot-switchable reverb on the normal channel. and hence one extra control knob. Usual SV cabinet size of 21" x 9.1/4" x 11/1/4". Valve compliment of 2 x EL34, 5 x ECC83, 1 x 6BR8, plus two silicon rectifiers. Price in 1970/71 was £88.
  
  
• THE TREBLE 'N BASS 100 SV
  The last and loudest of the T'n'B's at a formidable 100 watts undistorted output, and some very distorted output on top of that! Two versions appeared during the SV Period - the first did not have a presence control and the input sockets etc were fitted on the top side of the control panel. The later version did have a presence control fitted, and the input sockets were at the bottom of the control panel (in line with the other standard SV amps.) Unlike previous T'n B 100 watt amp heads, this SV version used silicon rectification and was not fitted with a tremolo facility.
  The valve compliment comprised of 4 x EL34, and 4 x ECC83, plus two silicon rectifiers in the first SV version, and three in the second. Back-panel sockets were fitted for external effects.
  
  
• THE ZODIAC 50 SV
  The Zodiac was really now a deluxe version of the T'n B 50, having lost its push-button tone controls. However, tremolo was provided on one channel of the new amp, with reverb on the other channel. Cabinet dimensions and appearance was the same as the rest of the SV range.
  Valve - 2 x EL34, 6 x ECC83, plus two silicon rectifiers.
  
  THE ZODIAC 100 SV
  Same as the new Zodiac 50 head, but with 100 watts of power being supplied through 4 x EL34, 6 x ECC83. Three silicon diode rectifiers were fitted.
  
  
• THE CHIEFTAIN 200 WATT AMPLIFIER & SPEAKER STACK
  This monster was introduced by Selmer at the August 1969 British Music Fair. The amp head had four channels, each with two inputs and volume, treble, and bass rotary controls. However, two of the channels were also equipped with the push button "Selectortone". Two stacked speaker cabinets were supplied for use with the head - one 100 watt Horn Enclosure (horn unit plus 2 x 12" speakers), and one 100watt Bass Cabinet (4 x 12" speakers). That must have been a seriously loud amp!
  

PA AMPLIFIER UNITS

• THE PA 100/4 SV
  Four separate channels, each with a single input socket, a volume control and separate treble and bass controls. A master volume control was also fitted, acting over all four channels. Also on the front panel were send/return sockets for external echo or reverb units, there being no reverb being internally fitted to this amp. The 21" x 9.1/4" x 12.3/4" standard SV cabinet was utilised.
  Valves were 4 x EL34, 6 x ECC83, with three silicon rectifiers.
  The recommended speakers for this amp were either a pair of TV-60 column speakers, or two pairs of TV-35 columns. (See below.)
  
  
• THE PA 100/4 SV (TRANSITION MODEL)
  It would appear that prior to the above PA 100/4 being introduced, Selmer marketed for a short period the previous "black-silver" wooden case version under the "SV" designation. An example of this transition model is shown here.
  
  
• THE PA 100/6 SV REVERB
  Fitted in a larger cabinet (23" x 9.1/4" x 12.3/4"), and up-rated to provide six separate channels. Two of the channels were served by an internal reverberation unit, and two of the other channels had send/return facilities for external echo/reverberation.
  As with the four channel unit, recommended speakers were a pair of TV-60 column speakers or two pairs of TV-35 columns.

SPEAKER CABINETS & COLUMNS

• THE ALL-PURPOSE 50 CABINET
  
  
• THE ALL-PURPOSE 100 CABINET
  
  
• THE GOLIATH 50 Mk II
  
  
• THE GOLIATH 100 Mk II
  
  
• THE TV-20 PA COLUMN SPEAKERS
  
  
• THE TV-35 COLUMN SPEAKERS
  
  
• THE TV-60 COLUMN SPEAKERS

Selmer Advert from July 1971, courtesy of Oliver Sewell and Nick from the Vox Supreme Website .

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