Eico hf 81 manual download

Download the eico hf81 manuals for free hifi manuals. Eico hf81 hf81 tube stereo integrated amplifier manual reprint. The hf 81 can be used in two ways for astereophonic system. This hf87 is definitely of boatanchor weight at over 30 pounds. Everything you need to know about selecting an eico hf vintage amplifier. If you cant find a manual please do not contact us, all the manuals we have are online. Eico amp schematics to assist you with your amplifier repairs and modifications. Please note that items here are free and may not be the quality of purchased items. When you enjoy spending your leisure time using vintage radios and related equipment, it helps to have the right type of amplifier to increase the volume and to process the sounds. With the high stability compensation, pulses settle virtually instantly.

Eico hf12 audio amp and hft90 fm tuner ohio university. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. Ultimate eico operation maintenance repair service manual. I defenitly find the eico lacking in the upper volume range and my daughter confirmed this for me. Apr 28, 2020 do not use a 175 or 180, it very important these amps have the proper 165 ohm cathode resistor. If you spotted an eico hf81 at the local goodwill, youd think. Eico diagrams, schematics and service manuals download for free. Download the eico hf85 manuals for free hifi manuals. If the hf87 power amplifier is being usedwitha preamplifier, such the e ico. Eico hf81 service repair manual, schematics, circuit diagram, parts list, disassembly, troubleshooting, service menu, pdf download. A repair for a customer, this unit presented with excessive noise. The owners manual is used as an reference guide, instruction manual and instruction book.

The article, imho, accurately described what the eico hf 81 is capable of. I have schematics, manual, and mod info available to those daring enough to try it. From their budget units up to the the flagship model, the hf 60, they represented a serious competitor to heath and dynaco, offering good value for the hobbyists of yore. Lets your amp deliver 60 watts rms from 20hz to 20khz, with all distortions significantly reduced versus the original.

As is obvious from these pages, i occasionally enjoy working on tube audio amps as well as more typical boatanchors. With it you can select pre amplify, and control accurately any stereophonic source tape, discs, or broadcasts and feed it through the selfcontained dual 14 watt amplifiers to a stereo pair of speaker systems. While i like the positive electrical connection terminal strips allow, those on the hf81 are too close together to accept good spades, such as. Jul 15, 2012 eico, unlike mcintosh, marantz, or fisher, isnt quite spoken with the reverent tones with discussing the best of the vintage amplifiers, but to do so would be a mistake. Eico produced hifi products in the early 1950s to the mid1960s with a line of tuners, preamplifiers, and amplifiers, available both in kit form or fully assembled. Use hifi eico hf81 hf81 tube stereo integrated amplifier manual reprint, 10 usd. Eico stereophonic integrated amplifier hf81 rebuild. Throwing a switch on the eico allowed the hf 81 to drive its own amplifiers from one preamp section and an external mono amplifier from the other. The only drawback of the hf 81 is the 14watts per channel output.

Help me pick speakers for my eico hf81 steve hoffman music. The eico model hf87 is provided with its own onoff power switch. The eico hf 86 notes are helpful with the hf 81 since they have similar circuits. My hf 81 every bit as good, if not better, than some of the other equipment that ive owned. The eico model hf 81 is a complete high fidelity stereophonic control center and a pair of 14 watt amplifiers.

This hf 12 amp was introduced in 1957 as a williamsontype integrated amplifier. Find great deals on ebay for eico hf 81 and stereo tube amplifier. The output transformers are the reason behind the so called magic these amps produce. The eico model hf81 is a complete high fidelity stereophonic control center and a pair of 14 watt.

Eico power amps in the hf series were well designed and very successful as kits. Zen amp and mcintosh mc240 didnt sound any nearly good as eico hf81. Other points of interests are the discussion of the various parts such as resistors, caps, power tubes, rectifiers etc. New eq circuits had been put into the phono section but the cathode bypass capacitors had not been replaced. Eico hf 81 manual service manual,circuit diagram,users manual eico hft92 manual service manual,circuit diagram,users manual eico hft90 manual service manual,circuit diagram,users manual. They have a super mid range which brings out vocals and they create an. Free shipping on many items browse your favorite brands. To view this site, you must enable javascript or upgrade to a.

These are nice little stereo amplifiers with a builtin phono preamp and riaa equalization and feature about 14w of power output per channel from a pair of pushpull el84s each at about 1% distortion. The eico hf81 is an integrated 14 watt per channel tube amplifier. Help me pick speakers for my eico hf81 steve hoffman. Eico hf81 volume pot potentiometer control loudness. In addition to boatanchor receivers and transmitters, i occasionally enjoy working on tube audio amps. Eico hf81 manual stereo integrated tube amplifier hifi. Service manuals, schematics, eproms for electrical technicians.

Service manuals, owners manuals, schematics, diagrams, datasheets, brochures online for free download and free to your amplifier, receiver, tape, cd, tuner, turntable and recorder. From the late 50s, i had this nice example of an eico hf81 amplifier come through my shop. Eico hf12 hf14 hf20 hf22 restoration recap repair service rebuild kit fix. This is very noticeable in the presentation of detail. Eico hf81 manual stereo integrated tube amplifier hifi engine.

Get manual manualslib has more than 56 eico manuals checkout popular eico categories amplifier manuals. As per voltages in the manual, you should be measuring around 12. If you want to listen fairly loud, then you will require a speaker with sensitivity over 90db and with a fairly benign impedance curve. This is the 2 pages manual for eico hf 81 schematic. For the first time in 40 years it has been powered up and running. Eico hf81 service manual schematic eico hf81 connections map. But this was in direct comparison with my 299 not the lk48 which is the same scott amp as you thought didnt sound as good as the hf 81. Eico hf30tube sch service manual download, schematics. These high resolution downloads of the original photofact service folders cover 1946 through 1963. Eico stereophonic integrated amplifier hf81 rebuild rain. Below you will found our manuals on the eico hf 81. View and download eico hf60 instruction manual online.

Eicohf81 manual service manual,circuit diagram,users manual eicohft92 manual service manual,circuit diagram,users manual eicohft90 manual service manual,circuit diagram,users manual. While there are not as many vintage pieces here, a place is occupied by the hf81. Photofacts photofact downloads and service manuals. Below you will found our manuals on the eico hf 85. Visit us online for more information or to download service manuals today. In all cases, plug monophonic sources and one track of monophonicstereophonic sources in the channel 1 inputs. Save eico hf 81 to get email alerts and updates on your ebay feed. Eico hf 22 stereo amplifier amp original owners manual. There is a rating system of 15 stars and results are instantly tallied. Free eico diagrams, schematics, service manuals schematics. Brooklyn, build 1959, 10 pictures, 6 schematics, 10 tubes, united states of america, semiconductors. The service manual functions as a repair guide for troubleshooting and sometimes contains tips for refurbishing and modifications.

Vintage eico hf 12 hf 81 tube amplifier power indicator led lamp. This site helps you to save the earth from electronic waste. The model eico hf81 integrated tube amplifier is just one of several highly regarded products manufactured by eico during this period. It is assumed in what follows that a stereo phonic phono cartridgeis being used. The hf 81 also has a switch on the top of its chassis that can bridge the two amps to give 28w of mono output power. Well if it was me i would opt for a hf 14s you get better than what the hf 81 has to offer in the output section and loose the worst part of the hf 81 which is the preamp section. Eico hf81 sm service manual download, schematics, eeprom. Measurements although it does have 32 and 16 ohm output transformer taps, i measured the eico hf81 from its 8 and 4 ohm taps only, feeling that these will be optimal for use with modern speakers such as the mbls pb used for his auditioning. The musicality, warmth, smoothness and detail retrival is just amazing. Theelcomodel hf87re quires 215 watts at 110 to 120 volts, 60 cycles ac. Vintage instruction owners manual eico primer waveform. I have admired the buildquality of eico power amps such as the hf series. Eico hf30 hf32 hf35 hf50 restoration recap repair service rebuild kit fix. Ive owned big tannoys for over 8 years now dmt15 mkii studio monitors.

Service manuals, owners manuals, schematics, diagrams, datasheets, brochures online for free download and free to your amplifier, receiver. Eico hf81 service manual, schematics, circuit diagram. Nov 06, 2002 if the eico is picky in that respect than my older sony es might be the culprit here. Eico hf81 service manual, schematics, circuit diagram, parts.

Jul 02, 2006 the versatile hf 81 could be used to convert a mono to a stereo system. Now please dont every one jump out of there pants the fact is eico used same cheesy parts through out the preamp. And when you click on the file or icon it will count as a download. Get the best deals on eico hf vintage amplifier when you shop the largest online selection at. This hf12 amp was introduced in 1957 as a williamsontype integrated amplifier. Originals are also available from 1946 through 1970. The eico model hf81 is a complete high fidelity stereophonic control center and a pair of 14 watt amplifiers. This is the 40 pages manual for eico hf 85 owners manual.