Audio Space Mini-Line-7 Instruction Manual
Thank you very much for using
HOUSTON mini-series
vacuum tube Line-amplifier.
Please read this instruction manual carefully before using your Line-amplifier.
MODEL: MINI LINE-7 (M-7) VACUUM TUBE LINE-AMPLIFIER
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【SPECIFICATIONS】
LINE STAGE: _
INPUT IMPEDANCE: 250Kohm (RCA)
OUTPUT IMPEDANCE: <1.5Kohm
OUTPUT: 2V (28V Max.)(M-7)
FREQUENCY RESPONSE: 20Hz-100KHz ±1dB
T.H.D.: <0.04% 20Hz-20KHz/2V OUTPUT
TOTAL GAIN: 20dB
INPUT SENSITIVITY: 50mV-100mV
S/N: >92dB (HUM NOISE <200μV)
CHANNEL BALANCE: <1dB 20Hz-20KHz (MAX. VOLUME)
CHANNEL SEPRATION: GREATER THAN 56dB 20Hz-20KHz
TUBE COMPLEMENT: V1,V2…12AX7(ECC-83/5751)×2
V3…12AU7(ECC-82/6189) ×1
VOLTAGE: 230VAC 50/60Hz
DIMENSION: 160mm
WEIGHT: N.W.:5KG G.W.:6KG
×155mm×115mm (W×L×H)
【IMPORTANT SAFETY INFORMATION】
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
【WARNING】
* To reduce the risk of electric shock, don’t remove the cover.
* Don’t attempt to repair the product by yourself.
* No user serviceable parts inside. Refer servicing to qualified service personnel.
* Keep liquids away from the amplifier. If you spill liquid into the unit, pull out
the power plug at once and consult your dealer.
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CAUTION: BEFORE OPERATING THIS NEW PRODUCT, PLEASE CAREFULLY
READ THIS OPERATION MANUAL AND THEN SAVE IT FOR FUTURE
REFERENCE. IT WILL BE USEFUL IF YOU HAVE ANY DIFFICULTIES IN
OPERATING THIS NEW PRODUCT IN THE FUTURE.
1. It is dangerous to use this new product if
This product begins to smoke, smell, or make strange sounds. If this happens, immediately
switch off the power, unplug the power cord and contact the nearest authorized service
center.
2. Never remove the bottom cover
Do not remove the bottom cover of this product. Touching high voltage parts inside the
cabinet can result in electric shock and/or damage to the unit. This product contains
sufficient levels of voltage and current to be “lethal”. Do not tamper with a component or
part inside the unit. Even with the power turned off, a charge remains in the energy storage
capacitors for some time. Refer adjustment inside the cabinet and any needed service to
your authorized Houston dealer or other qualified technician.
3. Avoid exposing this product to direct sunlight, dust, heat sources or moisture
Do not place this product in a location where it is exposed to direct sunlight, dust, heat
sources, high humidity, kitchen smoke, etc., as these may cause malfunctions.
4.
Select a safe and well-ventilated location
Select a safe location from children, dog and cat to keep they or it cannot be easy to touch
the vacuum tubes and the product.
Don’t operating over 6 hours and the cabinet has air vents to allow heat to escape.
Obstructing these air vents may result in malfunction or, in some cases, fire. Always
observe the following guidelines:
Keep this product 10cm or more away from walls.
Do not place this product in a confined spaces with poor ventilation.
5. Handling the power Cord
Using a damaged power cord, or one with the bare wires exposed, could cause fire or result
in electric shock. Always observe the following guidelines:
When unplugging from the AC mains, never pull the cord. Always grip the plug when
unplugging the power cord.
Never place this product itself, furniture, rugs or other heavy objects on the power
cord.
If the power cord must pass near a heater, make sure the cord is far enough from the
heater, that the cord under no circumstances will melt or come in contact with the
heater.
If the power cord is damaged, immediately purchase a new one from the nearest
service center approved by Houston.
6. When the product will not be used for an extended period of time
If you go away on holiday or otherwise will be absent for a long time, as a safety
precaution, unplug the power cord from the AC mains or press the mains power switch (OI)
to move it from ON to OFF.
7. Do not place objects containing liquids on top of this product
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