Vintage recorders

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This is a fantastic recorder which boasts some amazing outputs and performances, this recorder delivers high frequency responses and as you will see form the technical data below, the tolerances are very fine, most recorder such as Akai will give you say ± 6dB on the dynamic range of 20Hz - 20KHz measured at -20dB, these recorders are measured at -3dB with a ±1dB tolerance making the top end frequency appear much smaller at 7.1/2 to the Akai however if you were to compare the Akai to the same professional specifications, you would e looking at a frequency range of 65Hz - 10KHz, or if you lower the studer to the Akai's tolerance, you would be looking at 18Hz - 25KHz if the audio transformers would allow it, the different is huge hence why Studer were and still are considered to be the best tape recorders ever built.

This recorder was used in the BBC radio Devon suite, I swapped it for a laptop knowing this machine was faulty, spent many hours fixing it and eventually, got it up and running, the end result was a recorder which out performed all my others apart from the C37 which though it has better responses and specifications, I prefer the valve sound.

The specification sheet was very long so I copied the most interesting bits below.

Specifications
Era	1982
Customer	Professional
Cost when sold	Unknown
Control type	Full logic, remote by RS232 or parallel
Counter	6 digit accurate H:MM:SS:T
Max Spool size	12.5"
Speeds	30, 15, 731/2, 3.3/4 ips
Tape slip	Max 0.1%
Variable speed	54% -35%
Wow and flutter
30ips	Max 0.03%
15ips	Max 0.04%
7.1/2ips	Max 0.06%
3.3/4ips	Max 0.1%
Start time	Aprox 0.4 seconds @ 15 ips
Tape tension	0.7n in play, 0.8 in spool
Tape spooling speed	0.1 - 12 meters / second
wind time	90 seconds for 1000 meters or 12.5" reel
Breaking time	with full 1000m 12.5" reel full speed, 4 seconds
Motors	2 spool motors, 1 capstan
Heads	1 erase, 1 record, 1 replay, 1 time code
Track configuration	1/2 track stereo
Frequency response
30ips	40Hz - 22KHz ± 2dB or 60Hz - 20KHz ± 1dB
15ips	30Hz - 20KHz ± 2dB or 40Hz - 18KHz ± 1dB
7.1/2ips	30Hz - 16KHz ± 2dB or 30Hz - 12KHz ± 1dB
3.3/4ips	30Hz - 10KHz ± 2dB or 30Hz - 8KHz ± 1dB
Equalisation	CCIR or NAB from 3.3/4 - 15ips, AES at 30ips
Signal to noise CCIR
30ips	65dB unweighted 56 weighted acc, to CCIR 468-II
15ips	63dB unweighted 54 weighted acc, to CCIR 468-II
7.1/2ips	62dB unweighted 52 weighted acc, to CCIR 468-II
3.3/4ips	58dB unweighted 54 weighted acc, to CCIR 468-II
Signal to noise NAB
30ips	78dB unweighted 71 weighted acc, to CCIR 468-II
15ips	75dB unweighted 68 weighted acc, to CCIR 468-II
7.1/2ips	77dB unweighted 70 weighted acc, to CCIR 468-II
3.3/4ips	68dB unweighted 59 weighted acc, to CCIR 468-II
Other tech data	At 30ips, S to N on ASA-A IEC is better thsn 69dB
Input level	Programmable +6/+10/+14/+16 dBu
Max input level	24dBu with transformer, 28dBu without
Output level	Programmable +6/+10/+14/+16 dBu
Special features	Can record tape setup data to tape

Click SSB button to see Spec Sheet Backdrop

Spec sheet Backdrop


		A812 (Studer) 1982