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ABH120C Combo and ABH180H Head Features and Controls

INPUT

 – Mono 

!

” Jack socket for instrument input. Use a 

properly screened “guitar” cable for interconnection. There 
are many different makes of guitar cable available, ranging 
from  fairly  inexpensive  to  very  expensive.  Each  have 
different characteristics, and depending on your particular 
guitar will give different results, so experimentation and 
help from your dealer is the best advice we can give.

-10dB INPUT PAD

 – normally the input jack connects 

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position,  and  is  suitable  for  most  purposes.  However, 
in  the  case  of  high  output  active  guitars  and  preamps, 
the  signal  level  may  be  too  high  for  the  input  stage  to 
handle  without  distorting.  By  pressing  the  -10dB  PAD 

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impedance  to  a  more  suitable  value  for  active  guitars 

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INPUT  GAIN

  –  this  control  determines  the  amount  of 

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rest of the amplifier. It is pretty straightforward in use – 
lower settings are clean – high mid settings are in the start 
of distortion range – and high settings are in the overdrive 
range.

OUTPUT  VOLUME

  –  this  quite  simply  controls  the 

output of the preamp, giving you the required sound level 
and balance that you require.

4

INSTRUMENT INPUT STAGE

EQ CONTOUR EXPANSION SWITCHES

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system  of  the 

ABH

  bass  system  is  very  wide  ranging 

and very versatile in its own right, but the use of the four 
expansion pushswitches opens up even more possibilities.

EQUALISATION STAGE

LOW  BOOST

  –  conversely  the  Low  Boost  switch 

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frequencies in a very warm and musical way.

HIGH BOOST

 – as its name implies this switch boosts 

the high frequencies adding great “presence” and “cut” 
required for modern bass playing styles. It adds “snap” 
without adding harshness.

BASS  &  TREBLE  EQ  ROTARY  CONTROLS

  – 

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mid position.

MIDDLE  EQ  &  RANGE  CONTROLS

  –  as  stated 

earlier the Middle circuit is after the valve preamp, and 
again is of the cut and boost variety. The Range control 
continuously  varies  the  Mid  centre  frequency  between 
200Hz, and 2kHz. Because it is independent of the Treble 
and  Bass  circuits,  even  bigger  variations  in  how  the 
middle frequencies react are possible.

DI  OUTPUT  LEVEL

  –  This  rotary  control  gives  an 

independent output level for the DI output.

DI  FEED  PRE/POST  SWITCH

  –  This  push-switch 

connects the DI circuit to either run in parallel with the 

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amplifier  output  derived  from  the  speaker  connection 

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GROUND  LIFT  SWITCH

  –  This  switch  lifts  the  DI 

socket ground connection from direct ground connection 
to  be  higher  impedance.  This  is  used  to  eliminate  any 
mains ground hum that could be generated between the 

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a mixing desk.

series

ABH120C ABH180H & BLS1215

Front Panel

ABH120C ABH180H & BLS1215 User m4   4

2011-4-21   17:32:09

Summary of Contents for ABH120C

Page 1: ...OPERATING MANUAL AND USER GUIDE www albionamps com ...

Page 2: ......

Page 3: ...Contents Important Safety Instructions 1 Important Warnings 2 Designer s Introduction 3 2XWOLQH 6SHFL FDWLRQ 3 ABH120C Combo and ABH180H Head Features and Controls 4 BLS1215 BASS CABINET 6 ...

Page 4: ...ents accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or WDEOH VSHFL HG E WKH PDQXIDFWXUHU RU VROG ZLWK WKH apparatus When a cart or rack is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug the apparatus during lightning storms or when unused for long periods of time 5HIHU DOO VHUYLFLQJ WR TXDOL HG SHUVRQQHO...

Page 5: ...m your amplifier It is there to prevent you from receiving a fatal electric shock NEVER use your amplifier equipment in a high PRLVWXUH HQYLURQPHQW VXFK DV UDLQ RU DOORZ LW WR JHW wet ALWAYS use correct and well maintained cables for all inter connections whether for power speaker or signal connections If in any doubt get them checked or renew immediately 1 9 5 XVH RXU DPSOL HU SURGXFWV ZLWK DQ FR...

Page 6: ...vel bass guitar playing without compromise As mentioned above the power stage is very musical it has a very sweet tone and handles being pushed into distortion which is a very big test on any EDVV SURGXFW ZLWK HDVH DQG ZLWKRXW DQ XOWUD KDUVK unpleasantness it really delivers the goods with what we WKLQN LV D SUHWW VXSHUE VRXQG OHYHO 63 IRU DQG watt bass rigs As with the other power items the power...

Page 7: ...ON SWITCHES WKH 4 system of the ABH bass system is very wide ranging and very versatile in its own right but the use of the four expansion pushswitches opens up even more possibilities EQUALISATION STAGE LOW BOOST conversely the Low Boost switch UHFRQ JXUHV WKH LQSXW VWDJH FLUFXLW WR ERRVW WKH YHU ORZ frequencies in a very warm and musical way HIGH BOOST as its name implies this switch boosts the ...

Page 8: ...ins fuse blowing this can be changed E UHPRYLQJ WKH SRZHU FRUG FRQQHFWRU IURP WKH DPSOL HU receptacle and with the aid of a small screwdriver the small drawer in the receptacle can be withdrawn allowing access to the mains power Fuse Rear Panel ABH180H shown 6SHFL FDWLRQ ABH180H ZDWW HDG DVV PSOL HU 120 watts RMS output into 8 ohm impedance loudspeaker load 180 watts RMS output into 4 ohm impedanc...

Page 9: ...ss fuse 0DLQV XVH 9 VXSSO 7 WLPH ODJ 250V rated 20mm glass fuse 6L HV LPHQVLRQ LQFO IHHW PD LPXP HLJKW J Warning Where fuses specified are rated at 250V please be aware that this is the rating of fuse value and NOT the rating of your particular DPSOL HU Warning Where fuses specified are rated at 250V please be aware that this is the rating of fuse value and NOT the rating of your particular DPSOL ...

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Page 12: ...gn Court Ermine Business Park Huntingdon Cambs PE29 6XU England www albionamps com The information in this brochure is subject to change without notice All rights reserved 2010 Albion Albion is a member of the IAG Group ...

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