EICO HF-81: Worth getting manual off ebay

Posted by mobile homeless (P) on August 20, 2003 at 23:13:22

In Reply to: Eico HF-81 question posted by kudret on August 18, 2003 at 17:26:00:

First, the switch is meant to be left TOWARD THE POWER TRANSFORMER in normal listening mode or in SEPERATE. If you move the switch to COMMON, you are tying the two amplifiers together internally in order to drive ONE speaker of a stereo pair. Channel 1 preamp tone control feeds the combined internal amplifiers. The preamp tone control channel 2 will feed out the channel 2 TAPE OUT jack to another EXTERNAL AMPLIFIER, hopefully, about the same rating (heh...). This is the only time you should select the COMBINED setting. The actual speaker connections and function setting are a whole other matter and I am already tired of typing!

I have known people to actually operate the beast with the combined setting totally unaware of the results, which is NOT lovely to say the least. I MUCH prefer the amp run in normal mode, not run in parallel. I have two EICO HF-81 and have tried to run them in monoblock fashion with mediocre results.

I really recommend getting a copy of the FULL manual off ebay from either an original sale or one of the places that does make digital copies. It is WELL WORTH the few ducats as it's one of the most comprehensive documents you can own, with step by step instructions for build.

This is perhaps one of the best amplifiers I know of and it STILL AMAZES ME after several hours of warmup. EVen compared to much higher priced brethren, the HF-81 can hold its own, outclassing brands and amps that would seem insurmountable. It renders much of the HIFI game obsolete.

kh
system

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Follow Ups Full Thread

Topic - Eico HF-81 question - kudret 17:26:00 08/18/03 (11)

Re: Eico HF-81 question - Tomp 19:28:17 08/23/03 (1)

Re: Eico HF-81 question - kudret 06:58:08 08/25/03 (0)

EICO HF-81: Worth getting manual off ebay - mobile homeless 08/20/0323:13:22 08/20/03 (4)

Re: EICO HF-81: Worth getting manual off ebay - kudret 15:41:42 08/22/03 (3)

Thanks ~ EICO HF-81 Manual reprint - mobile homeless 17:24:52 08/23/03 (0)

to determine if it was factory built - Skeptic 14:17:01 08/23/03 (1)

Re: to determine if it was factory built - kudret 07:06:53 08/25/03 (0)

Re: Eico HF-81 question - Ron Oehlert 20:04:58 08/18/03 (3)

Re: Eico HF-81 question - kudret 09:49:46 08/19/03 (2)

Re: Eico HF-81 question - Ron Oehlert 19:00:19 08/19/03 (1)

Re: Eico HF-81 question - kudret 19:55:56 08/19/03 (0)

Follow Ups

EICO HF-81: Worth getting manual off ebay - mobile homeless 08/20/0323:13:22 08/20/03 (4)

Re: EICO HF-81: Worth getting manual off ebay - kudret 15:41:42 08/22/03 (3)

Thanks ~ EICO HF-81 Manual reprint - mobile homeless 17:24:52 08/23/03 (0)

to determine if it was factory built - Skeptic 14:17:01 08/23/03 (1)

Re: to determine if it was factory built - kudret 07:06:53 08/25/03 (0)

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