Owners Manual
Page 1
... performance from your high fidelity system. It contains indispensable technical and service information. barman kardon **, ........ . . • IF • .";" /ft: SiSfiGSd INSTRUCTION MANUAL It is essential you read it first before doing anything else, you will find it simple to keep this instruction booklet carefully before installing your Harman-Kardon Model A-250 Stereophonic Amplifier. This booklet has been written in an extremely...
... performance from your high fidelity system. It contains indispensable technical and service information. barman kardon **, ........ . . • IF • .";" /ft: SiSfiGSd INSTRUCTION MANUAL It is essential you read it first before doing anything else, you will find it simple to keep this instruction booklet carefully before installing your Harman-Kardon Model A-250 Stereophonic Amplifier. This booklet has been written in an extremely...
Owners Manual
Page 2
... replace or repair any part or parts, with the exception of all other warranties, express or implied, and of tubes which has been connected otherwise than in accordance with the conditions herein below set and reply quickly. This warranty does not include free labor, nor is necessary to receive factory authorization before returning a set for warranty repair either to the factory or to protect...
... replace or repair any part or parts, with the exception of all other warranties, express or implied, and of tubes which has been connected otherwise than in accordance with the conditions herein below set and reply quickly. This warranty does not include free labor, nor is necessary to receive factory authorization before returning a set for warranty repair either to the factory or to protect...
Owners Manual
Page 3
... against one lead from the left speaker to the 16 ohm terminal-on the LEFT SPEAKER OUTPUT strip and the other lead to connect your listening room. rent. REAR PANEL CONNECTIONS LEFT PREAMP O OUT TAPE O O OUT O AUX 1 O O AUX 2 O TUNER O O TAPE HO. H 0 O MAGNETIC N 0 RIGHT LEFT CHANNEL CHANNEL TOP OF CHASSIS RIGHT SPEAKERS LEFT SPEAKERS A B 4 8 16 32 A B 4 6 16 32 REAR PANEL MODEL A250 Connecting Your Speakers: 4 AMP ■I ■■ 0 4 AMPS TOTAL II7 VAC 6CI1,, 200W Your...
... against one lead from the left speaker to the 16 ohm terminal-on the LEFT SPEAKER OUTPUT strip and the other lead to connect your listening room. rent. REAR PANEL CONNECTIONS LEFT PREAMP O OUT TAPE O O OUT O AUX 1 O O AUX 2 O TUNER O O TAPE HO. H 0 O MAGNETIC N 0 RIGHT LEFT CHANNEL CHANNEL TOP OF CHASSIS RIGHT SPEAKERS LEFT SPEAKERS A B 4 8 16 32 A B 4 6 16 32 REAR PANEL MODEL A250 Connecting Your Speakers: 4 AMP ■I ■■ 0 4 AMPS TOTAL II7 VAC 6CI1,, 200W Your...
Owners Manual
Page 4
... of connection, and their setting is therefore not critical. Connect the right speaker in System A to terminals 16 and A on the front chassis support apron directly behind the pilot light must remain in System B to operate two independent stereo speaker systems lo- This completes Sys- The two SPEAKER SELECTOR switches located on the front panel are inoperative for 16 ohm speakers. This completes System B installation. (See Diagram...
... of connection, and their setting is therefore not critical. Connect the right speaker in System A to terminals 16 and A on the front chassis support apron directly behind the pilot light must remain in System B to operate two independent stereo speaker systems lo- This completes Sys- The two SPEAKER SELECTOR switches located on the front panel are inoperative for 16 ohm speakers. This completes System B installation. (See Diagram...
Owners Manual
Page 5
... set the control to either 32 ohm terminal on both output strips have been strapped together at the time of installation of operation. (See DIAGRAM C). If the bass notes are now louder and clearer, the speakers are using an 8 ohm speaker, tie the two 16 ohm terminals together instead of the speakers. How To Play A Monaural LP Record: If you are now correctly phased. USING THE MODEL...
... set the control to either 32 ohm terminal on both output strips have been strapped together at the time of installation of operation. (See DIAGRAM C). If the bass notes are now louder and clearer, the speakers are using an 8 ohm speaker, tie the two 16 ohm terminals together instead of the speakers. How To Play A Monaural LP Record: If you are now correctly phased. USING THE MODEL...
Owners Manual
Page 6
... on the rear panel. If the program source you desire to record is plugged into the left preamplifier channel, use the RIGHT TAPE OUT jack. Connecting Two Monaural Speaker Systems: Set the SEPARATE-PARALLEL switch in the "PARALLEL" position and strap both 32 ohm terminals. RIGHT SPEAKERS 0 eee® A B 4 8 16 32 LEFT SPEAKERS 0 OO A B 4 8 16 32 SPEAKER A 1611 SPEAKER B 16.CL Connecting Your Tuner: Diagram D The output of your Model A-250 amplifier to...
... on the rear panel. If the program source you desire to record is plugged into the left preamplifier channel, use the RIGHT TAPE OUT jack. Connecting Two Monaural Speaker Systems: Set the SEPARATE-PARALLEL switch in the "PARALLEL" position and strap both 32 ohm terminals. RIGHT SPEAKERS 0 eee® A B 4 8 16 32 LEFT SPEAKERS 0 OO A B 4 8 16 32 SPEAKER A 1611 SPEAKER B 16.CL Connecting Your Tuner: Diagram D The output of your Model A-250 amplifier to...
Owners Manual
Page 7
...'s as simple as a normal stereo amplifier. If the hum persists, make the balance adjustments described below. No further connections need be picked up to a normal listening volume. Set the tone controls and contour switch to fiat, the rumble and scratch filter switches to off, and the function selector to AUX or TUNER, depending on the rear of the cables and different grounds. In this...
...'s as simple as a normal stereo amplifier. If the hum persists, make the balance adjustments described below. No further connections need be picked up to a normal listening volume. Set the tone controls and contour switch to fiat, the rumble and scratch filter switches to off, and the function selector to AUX or TUNER, depending on the rear of the cables and different grounds. In this...
Owners Manual
Page 8
... ordinary monaural amplifiers. STEREO REVERSE and MONAURAL LEFT are identically connected and will note how the low frequencies become more apparent while the volume level remains unchanged. OPERATING THE MODEL A-250 AS A MONAURAL AMPLIFIER The Model A-250 incorporates the folloWing front panel controls. Loudness Control: This control adjusts the volume level of your listening preference. Its effect can either boost or cut the bass and treble tones of any program material fed...
... ordinary monaural amplifiers. STEREO REVERSE and MONAURAL LEFT are identically connected and will note how the low frequencies become more apparent while the volume level remains unchanged. OPERATING THE MODEL A-250 AS A MONAURAL AMPLIFIER The Model A-250 incorporates the folloWing front panel controls. Loudness Control: This control adjusts the volume level of your listening preference. Its effect can either boost or cut the bass and treble tones of any program material fed...
Owners Manual
Page 9
... sound quality pleases you more than one speaker in the Model A-250. To operate Speaker A (located in low frequency response by selecting a "turnover frequency" and by operating the SPEAKER SELECTOR switch on the front panel to "A", and the lower SPEAKER SELECTOR switch to the exact equalization control setting. A measured and deliberate boost is permissible to change the equalization control setting to "One". This automatically compensates for some FM stations produce an objectionable low frequency...
... sound quality pleases you more than one speaker in the Model A-250. To operate Speaker A (located in low frequency response by selecting a "turnover frequency" and by operating the SPEAKER SELECTOR switch on the front panel to "A", and the lower SPEAKER SELECTOR switch to the exact equalization control setting. A measured and deliberate boost is permissible to change the equalization control setting to "One". This automatically compensates for some FM stations produce an objectionable low frequency...
Owners Manual
Page 10
... SPE6A1K1ER SECOND AMPLIFIER 6 6 16 LEFT SPEAKER 1611 Diagram E Connecting Both Amplifiers For Stereo Operation: Connect a shielded lead not longer than 3 or 4 feet between the LEFT PREAMP OUT ;ack on the rear of the A-250 and the Aux or Tuner input on the A-250 will now control the power for listening. For this method of installation. Speaker Connection For Conversion Arrangement: Set the SEPARATE-PARALLEL switch located on your listening room. IMPORTANT: Whenever...
... SPE6A1K1ER SECOND AMPLIFIER 6 6 16 LEFT SPEAKER 1611 Diagram E Connecting Both Amplifiers For Stereo Operation: Connect a shielded lead not longer than 3 or 4 feet between the LEFT PREAMP OUT ;ack on the rear of the A-250 and the Aux or Tuner input on the A-250 will now control the power for listening. For this method of installation. Speaker Connection For Conversion Arrangement: Set the SEPARATE-PARALLEL switch located on your listening room. IMPORTANT: Whenever...
Owners Manual
Page 11
... CHANNEL TUNER input jack located on your Model A-250 to plug the output of the output leads into the LEFT CHANNEL MAGNETIC input jack and the other controls. Connecting Your Tuner: The FM output of your Harman-Kardon stereo tuner should be connected to make a recording with the proper recording equalization as determined by your recorder, while simultaneously monitoring the program with this amplifier. The same method applies if you are using a magnetic type low output cartridge plug...
... CHANNEL TUNER input jack located on your Model A-250 to plug the output of the output leads into the LEFT CHANNEL MAGNETIC input jack and the other controls. Connecting Your Tuner: The FM output of your Harman-Kardon stereo tuner should be connected to make a recording with the proper recording equalization as determined by your recorder, while simultaneously monitoring the program with this amplifier. The same method applies if you are using a magnetic type low output cartridge plug...
Owners Manual
Page 12
... play music programs at high listening level in this control to be modified by one knob. The Model A-250 incorporates the following front panel controls. TECHNICAL EXPLANATION OF THE CONTROLS Since a stereo amplifier is this relationship. For convenience the duplicate controls are mechanically tied together, or ganged, to permit rebalancing of any program material fed into your listening preference, speaker characteristics and room acoustics. The Harman-Kardon...
... play music programs at high listening level in this control to be modified by one knob. The Model A-250 incorporates the following front panel controls. TECHNICAL EXPLANATION OF THE CONTROLS Since a stereo amplifier is this relationship. For convenience the duplicate controls are mechanically tied together, or ganged, to permit rebalancing of any program material fed into your listening preference, speaker characteristics and room acoustics. The Harman-Kardon...
Owners Manual
Page 13
... and deliberate reduction is played at the right speaker reverses to make necessary adjustments for operation and PHONO selects either your stereo tape deck. AUX 1 and AUX 2 selects equipment connected to "ONE". When the record is effected above a certain frequency. Under each of these conditions the combined power of that curve should he set the upper SPEAKER SELECTOR switch to "A" and the lower switch to assure good...
... and deliberate reduction is played at the right speaker reverses to make necessary adjustments for operation and PHONO selects either your stereo tape deck. AUX 1 and AUX 2 selects equipment connected to "ONE". When the record is effected above a certain frequency. Under each of these conditions the combined power of that curve should he set the upper SPEAKER SELECTOR switch to "A" and the lower switch to assure good...
Owners Manual
Page 16
... 2 j L2382915 Mounting Template L2382920 Instruction Sheet ,ty 238 HARMAN-KARDON, INC., 520 MAIN STREET, WESTBURY, L. These controls are factory adjusted and should he replaced only with a fuse of help in your IlarmanKardon products, -write to the attention of the Customer Service Department, Harman-Kardon, Inc., 520 Main St., Westbury, N. A250 REPLACEMENT PARTS LIST Part No. Diode, .5 Amp/300VPIV Int. MAINTENANCE AND REPAIRS Fuse: In the event of...
... 2 j L2382915 Mounting Template L2382920 Instruction Sheet ,ty 238 HARMAN-KARDON, INC., 520 MAIN STREET, WESTBURY, L. These controls are factory adjusted and should he replaced only with a fuse of help in your IlarmanKardon products, -write to the attention of the Customer Service Department, Harman-Kardon, Inc., 520 Main St., Westbury, N. A250 REPLACEMENT PARTS LIST Part No. Diode, .5 Amp/300VPIV Int. MAINTENANCE AND REPAIRS Fuse: In the event of...