Amps
SELMER AMPLIFIERS, LATE 1967 TO 1969 - THE BLACK/SILVER PERIOD
Selmer Thunderbird 50 Combo, courtesy of
San Diego Guitars, USA.
Selmer had nothing new to present at the late 1967
British Musical Instrument Trade Fair. In desperation they did a deal with the cabinet manufacturer to produce a new look for the
existing models. Those bearing the MkII designation were called MkIIIs, but some of the early ones still had the MkII control
panel.
There was one significant change "under the skin" though - the
introduction of Solid State rectification to the larger amps during this period.
Dark grey/black, rather non-descript, grill cloth was used on the combos and
the heads, with a strip of adonised aluminium complete with Selmer and
lyre-shaped logos beneath the control panels. The exception to this seems to
have been the T'nB heads, which for the 50 watt units had a full depth adonised
aluminium facia from September 1968. The 100watt T'nB's and 100w PA's were
produced in a brushed aluminium fascia / rack style format. Solid
aluminium control knobs seem to have been introduced during the period, probably
after September 1968.
COMBOS
- THE MERCURY 5 AND MERCURY 5 TREMOLO
Selmer's replacement for the Little Giant. Although this amp adopted the name of the croc-skin amp which evolved from the Standard & New Standard, it bore little resemblance to it's predecessors, being a solid-state 5 watt combo with top front mounted control panel, black covering with white/black grillcloth. Size 16.1/2" x 7.1/2" x 12.3/4", single 8" speaker. 25 gns, or 29 gns with
tremolo. The Mercury 5 seems to have been a short-lived model, only produced
during the Black/Silver Period, as it doesn't show up in earlier or later
catalogues.
THE VANGUARD 15
A new model name for a valve-driven 15 watt
combo which was developed from the previous Futurama Caravelle model. It
would appear that this was intended to replace the Constellation 14 (formerly the Stadium).
However, the Stadium/Constellation was a hand wired amp, whereas the
Vanguard inherited the Caravelle's much cheaper printed circuit boards.
Strangely, the control panel was recessed into the top of the cabinet on the
Vanguard, which must by then have been quite old-fashioned. As with the
Caravelle, two-channels were supplied, each with tone and volume control, plus one reverb
control which was new to the Vanguard. Size 14.3/4" x 23.1/2" x 9", single 12" speaker. Valve complement
3 x ECC83, 1 x 6BR8, 1 x EZ81, 2 x 6BW6. Price 39 gns. Another model which seems to have been produced only during the
black/silver period.
- ALL-PURPOSE TWIN 30
This amp replaced both the Twin Lead 30 and Twin Bass 30, hence earning its name "All-Purpose". With this new amp, Selmer had corrected the problems with overheating solid state rectifiers that the Twin Lead had suffered from.
The valve-driven All-Purpose was initially produced in exactly the same format as the Twin Lead 30 with the rather small and insignificant-looking amplifier unit sitting on top of the speaker cabinet. (A later version with the amp mounted integrally into the front of the cab. was produced from around 1970 during the "Aluminium Fronted" Period.)
Cabinet size 29" x 10.1/4" x 24" with 2 x 12" Goodmans speakers (probably Audiom 61's). A single channel amp with two inputs and volume and tone controls, valve complement EL506 (2), ECC82 (2) and 2 silicon rectifiers.
(The EL506 is an obscure valve, difficult to find nowadays. Its modern
equivalent is a Model 7868 nine pin power pentode.) Priced to sell at a very cheap 75
gns.
- THE SATURN 60 REVERB
A new name for
what, in effect, was the Taurus SS Combo from the Blue/Black period. A solid-state 60 watt combo in a modern styling with top front-mounted control panel in a black-covered cab with white/black grillcloth. Two channels, two inputs and volume/treble/bass controls for each. Reverb and
tremolo on both channels, 2 x 12" speakers. Size 33" x 10.1/2" x 23" . A hefty 150 gns including cover and
stand. Introduced September 1968, when the Taurus was presumably
discontinued.
- THE ZODIAC 50 Mk
II & III
Similar
to the Zodiac Mk II in the Blue/Black Period, but different cosmetics. A Mk
III version with solid state rectification did appear for a short time.
- THE THUNDERBIRD 50 Mk III
Same
as the Thunderbird 50 Mk II in the Blue/Black Period, but different
cosmetics.
NOTE: The Zodiac and Thunderbird Mk III combos with
solid state rectification both seem
to have been discontinued in the Black/Silver Period, as
although examples of the amps do exist, they do not feature in catalogues
that we have found so far. Hence these models are quite rare. They seem to
have been replaced by a range of Zodiac and Zenith amp heads (See Later)
- THE
TREBLE N BASS 50 REVERB COMBO
A new addition to the range,
which as the label says, was a standard T 'n B 50 Reverb unit incorporated
into the top of a 2 x 12" speaker cabinet. For some reason, we can't
find this particular combo in any of the Selmer catalogues of the
Black/Silver period. That may account for why these combos are rare.
- THE SELMER-LESLIE COMBINATION AMPLIFIER & LOUDSPEAKER UNIT
Selmer
imported Leslie Organ parts during the 1960's/70's, and assembled the organs
under licence for sale in the UK. For a short period in 1967/68, they
manufactured a combo amp for use with the organ. This produced the famous
Leslie rotating speaker sound, but by means of a moving baffle in front of
the speaker; not by actually rotating the speaker. We understand that one of
these units was supplied to the EMI Abbey Road studios for use during the
Beatles recording sessions.
AMPLIFIER HEADS
- THE TREBLE 'N BASE
50 Mk III
This version of the T'n'B is identical to the previous model apart from minor cosmetic changes, and the omission of the GZ34 rectifier valve in favour of
3 silicon rectifiers : some people consider that this detracts slightly from the sound quality. The shape of the cab was changed slightly so that the top front portion was slanted, but the control panel was otherwise unchanged.
The grillcloth was omitted in favour of a black/silver aluminium panel
covering the front of the amp, with large "Selmer" and lyre-shaped logos, although it appears that a few early examples were produced with a copper coloured front. A picture of one of these rare amps is included on the linked picture page. Priced at 60 gns including waterproof cover.
- THE TREBLE
N'
BASS 50 REVERBERATION
A version of the above T'n'B 50 in a larger cab featuring footswitchable reverb on the normal channel, hence one extra control knob. Cabinet size 20.3/4" x 9.1/4" x 11.1/4". Valve complement EL34 (2), ECC83 (3), 6BR8 (1) and 2 silicon rectifiers. Price 75
gns.
A combo version of this amp was also produced, fitted with twin 12"
speakers - See Combo Section above.
Basically the same, as the T n' B 100 in the
Blue/Black Period.. Valves - 4 x EL34, 2 x GZ34, 5 x ECC83.
Price: 93 gns..
- THE ZENITH 50
This seems to be the final version of the fabulous Thunderbird,
which was discontinued during the Black/Silver Period and transposed into a head and with the push button tone pre-selects and reverb of it's predecessor
(but losing it's tremolo). Top front-mounted control panel in black cab with white/black grillcloth, large white Selmer & lyre logos. Two channels each with volume/bass/treble controls and reverb depth. 6 push-button tone presets. Size 29" x 9.1/4" x 11.1/4", valve complement EL34 (2), ECC83 (4), 6BR8 (1). 95 gns including cover.
- THE ZENITH 100
Identical to Zenith 50 head (black/white) but EL34 (4) giving 100 watt output.
As with the Zenith 50, this appears to have been introduced when the Zodiac
and Thunderbird combos were discontinued.
- THE SUPER ZODIAC 50
This first version of the Super Zodiac was in the same styling as the very similar white/black T'n'B heads, but incorporated the push-button tone pre-selects which were a feature of it's predecessors, the Zodiac and Selectortone
combos. Top front-mounted control panel in black covered cabinet with white/black grillcloth and white Selmer & lyre logos. Two channels, each with 2 inputs and volume/treble/bass controls, 6 push-button tone pre-sets and depth/speed tremelo controls. Size 29" x 9.1/4" x 11.1/4", valve complement EL34 (2), ECC83 (4) & 2 silicon rectifiers. Price 80 gns including cover.
- THE
SUPER ZODIAC 100
Introduced later into the Black/Silver Period in about 1969. Identical to the Super Zodiac 50 (white/black) except valve complement of EL34 (4), ECC83 (4) giving 100 watt output. Price 90 gns including cover.
- THE THUNDERBIRD 100
This
seems to have been a very short-lived model produced at the beginning of the
Black/Silver Period, as we cannot find it in the catalogues. It was probably
discontinued in favour of the Zenith range.
Single channel, two input amp with Hammond reverberation unit fitted. Push-button
selector-tone, together with
separate treble, bass and volume controls, as for Zodiac 100 above.
We have
now found a very similar Thunderbird 50
Head, but only in Blue/Black styling. Presumably this was the
forerunner or even prototype of the Black/Silver T.Bird 100 head?
P A AMPLIFIER UNITS
- THE
PA 100 Mk II
The second version of the TV PA100 from the
Blue/Black period. As previously this was a four channel amplifier for Public Address and Vocalist use,
but now fitted with master volume control and echo send/return sockets on
the front panel. The previous valve rectification was now changed to Solid
State. Constructed within a metal cabinet, with white front and "D" handles. Two Selmer TV 4 x 10" Column Speakers were the designated units for use with this amplifier.
- THE PA 100/6 REVERBERATION
This unit was developed for the 1967 London Trade Show. It had six channels, with reverberation on two of these. Two of the other channels had send/return facilities for external echo/reverberation.
SPEAKER CABINETS AND COLUMNS
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