hifi engine

Ferrograph Series Seven

Aage's picture


Ferrograph Series Seven

British made, three motor, adjustable FF/REW speed, uses up to 8¼" diameter. It's an all-round solid machine, quite unique.




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mercioluiz's picture

Re: Ferrograph Series Seven

FERROGRAPH SERIES SEVEN
GENERAL SPECIFICATION
RECORDING MEDIUM
Magnetic tape, à” wide. on reels of up to 8i' dnameten
TRACK WIDTH
Full track - -248 in. (6›3 mm.); § track - -090 IrL (2-3 mm.);
â track - -043 in. (1'1 mm.)\
HEAD GAP WIDTH
Record head - 25ou in. (6'3p) : Fleplav head - 8op in. (2p).
OPERATING TAPE SPEEDS
Throo (3): - 7ã, 33. 1g inlsec. (19. 9-5, 4›75 cmlsec.)
Sunix H 1 , 7§. 3 inisec (38. 19, 9'5 cmlsec.)
TAPE SPEED ACCURACY
Beuct than t 196 (at spocifiod supplv fvequency).
PLAYING TIME PER TRACK
2.400 ft 1720 m,) oÍ tape-1 hrv 4 min. at 7§ inIsoa (19 cmlsecJ
2 hr. 8 min. at 3§ inlsec. (9°5 cmlsoc.)
FAST WIND TIME
Contmuously variable in eithet durectionz at hm spaod loss lhan
1 mm. lor l.200 íL (360 m.) of lape.
WOW" ANO "FLUTTER"
Less lhan O-08% t H Inslsec. (19 cmísoc.)
0 1596 al 33 inslsec. (9-5 cmlsec.)
02096 al Ig mslsec (4'75 cmlsec.)
Hugh Spaed Models ( uffix H)
Less than 0'08'% at 15 inslsec. (38 chec.)
O-10% at 7ir mslsec. (19 crnlsec.)
O~1596 al 33 msIsea (9*5 cmlsec.)
FREOUENCY RESPONSE
Record-Replav. using Lonç le Fotrolaoe type B.
15 mlsec. (36 cmlsecJ : 30-20.0ooHz ide 1
7§ inlsea (19 cranecJ : 30-17.0ooH2 i2dB H
33 inlsec (9*5 cm¡'sec.) : 40~14,0ooHz 1368 J
13 inlsec. (4'75 cmlsec.) : 50- 7.0ooHz i SdB
REPLAY CHARACTEFIISTIC -D,I.Nr (N.A.B, on 117V models)
15 inísec (38 cmlscc) : 35g1 sec. (5opsec. -N,A.B\)
7§ mlsec. (19 cmlsec.) : 501318051 sec.
33 infsec. (9-5 cmfsec.) : 9ol31808 soc.
1§ inlsec (4-75 anlsec.) : 12ol159 p scc.
MAXIMUM OUTPUT (pet channen
10 Watls R.M.S. mto 8-16 ll Ioudspeaka.
AMPLIFIEH DlSTORTION
Lass than 0~2596 R.M.S. at all Imls up to 10 Watts.
SIGNAL TO NOISE RATIO
Unweightod. induding hum batter than 55d8.-mf. 296 distonicm
Weighlnd (C.C.I.F.). batter than 6odB. Q uack-58d8).
BASS CONYROL
Cominuouslv variablo uo to 11568 at 5oHz. 1 2od8 at 2oHz.
TREBLE CONTROL
Contmuouslv variable up lo i1odB at IOkHL i15dB at 2okHz.
INTERNAL LOUDSPEAKERS
TWO (2) - ellipúcal 7 tn. x 4 in. (18 cm- x10 cm.).
INPUÍ LEVEL (foc lull depth tacording)
Móârâggglnez SOOWJSmV at 1oK Q Recommended Somca1 250-
Linez SÓmVJOV at 2M IL Reoommendod Soucaz any impednnoe,
OUTPUTS (Írom full depth necordíng)
6000: 2V at 600 u
Low Leveíz 3oomv imo IOKQ o¡ greatet 7
°Loudspoakerz up to IO Waus R,M.S. Into BJBU
POWER SUPPLY
200-25oV. 5oHz; SuÍfix Az 117V. GOHL
POWER CONSUMPTlON
100 Watts apptoximately.
CHANNEL SEPARATION (Steteo Models only)
Stereo oparation - approx õode Mono operation - better than
6568 al 1.0ooHz.
OVERALL DIMENSIONS (with Iid)
16§" wide x17§" x10" (425 mm wide x 445 mm. x 255 mm.).
WEIGHT
49§ 1bs. (22'5 Kgm).
ALTERNATIVE MODELS
Suífix P: Portable wood case. lealhapcloth COVGUOCL with l¡d.
Sulfix W: Wooden case. namral wood fmistL
Sulfix S: Uncased version
On Modcls 7M md 704. m mnpm is mplccod by:-
Low Lml Adjustabtez up to SOOmV imo IOKQ or gmaten