Bob Carver 27813 Operating Manual Download Page 14

14

SPECIFICATIONS

Gain 

29 dB

Power

More than 75 Watts Per 
Channel, both channels 
driven at eight ohms, 
from 20Hz to 20kHz with 
no more than 1% total 
harmonic distortion. 
 Distortion decreases at 
lower levels.

4Ω Power

75 Watts Per Channel

8Ω Power

75 Watts Per Channel

16Ω Power

60 Watts Per Channel

Noise

Better than 100 dB below 
75 Watts, A-weighted.

Frequency response

+0, -3dB from 16Hz to 
35kHz. Flat 20Hz – 20kHz 
±0.25dB

Distortion

Less than 1.0%

Source Impedance

1.7 ohms

Input Impedance

100 kΩ

Vacuum tubes

KT120 x 4, KT88 (optional) 
/ 6550 (optional), 12AX7 x 
2, 12AT7

AC Power

120 Volts, 60Hz (US)
240 Volts, 50Hz (EU)

Weight

19 lbs

Country of Origin

USA

BOB CARVER COMPANY LIMITED WARRANTY

Bob Carver Company’s Crimson 275 is covered by a five 

(5)-Year Limited Warranty on parts and vacuum tubes. 

This Limited Warranty initiates from the date of purchase, 

and is limited to the original purchaser, or in the case of 

demonstration equipment, limited to the balance of war-

ranty remaining after original shipment to the retailer.

CONDITIONS

This Warranty is subject to the following conditions 

and limitations. Only new products purchased through 

an 

authorized Bob Carver Company retailer are eligible for 

warranty coverage. The Warranty is void and inapplicable 

if the product has been used or handled other than in 

accordance with the instructions in the owner’s manual, 

abused, or misused, damaged by accident or neglect or in 

being transported, or the defect is due to the product being 

repaired or tampered with by anyone other than Bob Carv-

er Company or an authorized Bob Carver Company repair 

center. In the event that the owner’s Bob Carver Company 

dealer cannot effect repairs, the product must be packed 

and returned to Bob Carver Company by the customer at 

his or her sole expense — only after obtaining a 

Return Au-

thorization approval. Bob Carver Company will pay return 

freight of its choice. 

A RETURNED PRODUCT MUST BE ACCOMPANIED BY A 

WRITTEN DESCRIPTION OF THE DEFECT AND A PHOTO-

COPY OF THE ORIGINAL PURCHASE RECEIPT.

This receipt must clearly list model and serial num-

ber, the date of purchase, the name and address of the 

purchaser and authorized dealer and the price paid by 

the purchaser. Bob Carver Company reserves the right to 

modify the design of any product without obligation to 

purchasers of previously manufactured products and to 

change the prices or specifications of any product without 

notice or obligation to any person. 

REMEDY

In the event the above product fails to meet the above 

Warranty and the above conditions have been met, the 

purchaser’s primary remedy under this Limited Warranty 

shall be to return the product to their Bob Carver Compa-

ny dealer.  IF they cannot contact or reach their dealer, the 

owner should directly contract Bob Carver Company and 

obtain a Return Authorization approval.  Then the defect 

will be rectified without charge for parts or labor, including 

vacuum tubes 

during the 5-year Warranty period. 

Summary of Contents for 27813

Page 1: ...Operating Manual c02 15 19...

Page 2: ...one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your out...

Page 3: ...e hook up instruc tions 5 Connect the output terminals of the Crimson 275 to your loudspeakers See page 8 for more details 6 Connect the IEC power cable between the Crimson 275 power socket and the wa...

Page 4: ...he room becomes an integral part of the music in a way no other amplifier allows Sound is more majestic more realistic and the soundstage is larger and more compelling This phenomenon is impossible to...

Page 5: ...ional help concerning a sus pected problem we re here in rainy Snohomish Washington to help you Bob Carver Company 1429 Avenue D 396 Snohomish WA 98290 Phone 847 668 4519 or 360 348 5848 Email Frank M...

Page 6: ...don t recommend placing the Crimson 275 in a tightly enclosed cabinet without suffi cient ventilation Allow at least 18 inches of free space above the amplifier 12AT7 KT120 KT120 KT120 KT120 12AT7 12...

Page 7: ...amplifier life Our amplifiers simply do not run hot Like their more expensive siblings they are the coolest running tube type amplifiers ever allowing you to actually touch the tops of the mighty KT1...

Page 8: ...ce power loss It is not within the scope of this manual to discuss various esoteric speaker cable options The Crimson 275 speaker terminals will accept spade lugs banana plugs or bare wire If using ba...

Page 9: ...should be replaced with the same type and rating If the fuse blows during bench testing it may be temporarily replaced with a 1 25 or 1 5 ampere fuse Do not under any cir cumstances use a slow blow fu...

Page 10: ...tact with an internal element shorting the element and is vaporized into gaseous oblivion The getter the mirror like shiny plating on the inside of the tube does its job absorbs the vaporized material...

Page 11: ...you wrote down each bias current you will end up with four numbers The goal is to select two groups of two whose sum from any two tubes is as close as you can get to the other group of two tubes Inst...

Page 12: ...ltage is biased to approximately 60 volts Multiple decoupling filter sections are used with load regu lation obtained through constant current loading Turn on in rush current lim iting is provided by...

Page 13: ...13 Crimson 275 Amplifier Schematic...

Page 14: ...damaged by accident or neglect or in being transported or the defect is due to the product being repaired or tampered with by anyone other than Bob Carv er Company or an authorized Bob Carver Company...

Page 15: ...e conditions the owner of the equipment must pro vide a copy of his purchase receipt fulfilling the require ments described under Conditions above The product must be packed and returned to Bob Carver...

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