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post #21 of 41 (permalink) Old 10-25-2004, 11:27 PM Thread Starter
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RE: Question for stereo electronics afficionados

All my newer HK stuff I bought refurb thru the factory web site. Haven't had a bit of problem with any of it. Some of the older stuff is fantastic. My Citation 19 weighs a ton and puts out 150 watts a channel, and has worked fine for the past 25 years. I also have an AV-25, one of the first AV amps they put out in the early 90s, that for some reaon is one of the most melodic and powerful sounding amps I have ever heard, even tho it was not a very expensive model. I use that now to run the center and the sub, and it makes the system sound killer. You see those on ebay for $100 or less all the time. I had the whole stereo system built around 1997 or so, and added the AV stuff last year. I got the AV receiver and surround speakers refurb for less than half price off their website, and even tho it is Korea made, it works great, but you can tell the sound quality has gone down.

I bought two more of the two ton Citation 19s on ebay cheap. They both have problems, but I am in the process of building one good one out of them. If I am successful, I am going to bridge them and run my Infinity Studio models, which will support all the additional power, so I can get in rickg's Hafleur league. One of them works great, but the right rear corner gets smoking hot - but if I run a fan on it it works fine. The other one has a dead channel. I may just mail them off to some one.

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post #22 of 41 (permalink) Old 10-26-2004, 09:50 AM
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RE: Question for stereo electronics afficionados

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kvining - 10/25/2004 12:27 AM

I got the AV receiver and surround speakers refurb for less than half price off their website, and even tho it is Korea made, it works great, but you can tell the sound quality has gone down.
It's Bush's fault! [;)]

It's hilarious when folks take stabs at stereo brands the way they do baseball teams!

Buy what you can, and enjoy all of it! HK, Macintosh, whatever!

My home system is an eclectic collection of brands I've picked up since college (many moons ago, when the components you guys tout as vintage were mainstream off-the shelf units, and Best Buy was the price you got on a great deal, not a consumer store). The components were modest in my college days, and my steadily improving income enhanced the quality of my future purchases.

Kind of moot these days, since I don't have much time to enjoy my system like I used to...

99 W163, 95 R129, 93 W124
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post #23 of 41 (permalink) Old 10-26-2004, 10:51 AM
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RE: Question for stereo electronics afficionados

I've got the HK AVR 25 in my office. Sometimes I use it by itself, sometimes as a tuner/preamp with a Jolida tube amp. I've also used it to run a couple passive subs in HT and as a main in a HT setup. The AVR 25 is a great unit. Versitile and very musical. I think it was one of those products a manufacturer occasionally screws up and gets right.

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post #24 of 41 (permalink) Old 10-26-2004, 11:09 AM
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RE: Question for stereo electronics afficionados

KT-88's or KT-90's, that is the question[:p]
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post #25 of 41 (permalink) Old 10-26-2004, 11:10 AM Thread Starter
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RE: Question for stereo electronics afficionados

The strange thing is the wattage rating. I believe it is only 25 watts a channel, hence the AVR-25 designation. But if I hook up a higher rated amp to the same set up speakers, even with double the rated wattage, it does not seem anywhere near as powerful. I can hook my two Infinity Reference 2000 speakers to the thing, which are rated at 200 watts, and that receiver will kick out wall shaking, and damn good sounding, jams. Its a real sleeper model.
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post #26 of 41 (permalink) Old 10-26-2004, 11:24 AM Thread Starter
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RE: Question for stereo electronics afficionados

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MRTIKKET - 10/26/2004 1:00 AM

I used to own a high end stereo shop, vintage HK is highly prized stuff. Wish I hadn't dumped all of mine.
The 60s and 70s preamps are especially good. I've bought a few off ebay, kept one and gave a couple to my kids, so I did get to do a little comparision. The silver-faced models are good, but not as good as the black-faced Citation models made around 1974. They are meant to be companion units to the black face Citation power amps, and when you combine the two, you get a sound you just don't get in most of the modern stuff, that seems to really bring out the tonal qualities of electric guitar.

I'm also using two other units I forgot to mention above, that were ebay finds - I also use two vintage HK EQ-8 graphic equalizers on the power amps, made in the late 70s, early 80s. They have 10 level controls per side and also have their own pre amp circuit with level controls for each channel, and sub-sonic filters. There is really nothing like having tonal control like that if your a classical music buff. I have noticed that since I bought all this six or seven years ago, the prices they are going for today on ebay vs what I paid for them, is double, so they are a good investment too.






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post #27 of 41 (permalink) Old 10-26-2004, 11:55 AM
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RE: Question for stereo electronics afficionados

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kvining - 10/26/2004 1:10 PM

The strange thing is the wattage rating. I believe it is only 25 watts a channel, hence the AVR-25 designation. But if I hook up a higher rated amp to the same set up speakers, even with double the rated wattage, it does not seem anywhere near as powerful. I can hook my two Infinity Reference 2000 speakers to the thing, which are rated at 200 watts, and that receiver will kick out wall shaking, and damn good sounding, jams. Its a real sleeper model.
I don't know much about electronics and maybe it was marketing hype, but HK touted them as high current amplifiers. If I remember right the AVR 25 had 40amps of current, which the salesman said was about double what the 100 watt amplifiers of the day had.

I think it is just a matter of bigger power supply(however you measure it) equals cleaner sound.

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post #28 of 41 (permalink) Old 10-26-2004, 01:49 PM Thread Starter
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RE: Question for stereo electronics afficionados

I've always heard some of the audiophile crowd poo-poo the "hi current" thing. I don't know that much about it either, maybe someone can enlighten us.
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post #29 of 41 (permalink) Old 10-26-2004, 02:21 PM
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RE: Question for stereo electronics afficionados

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kvining - 10/26/2004 3:49 PM

I've always heard some of the audiophile crowd poo-poo the "hi current" thing. I don't know that much about it either, maybe someone can enlighten us.
Maybe your talking about what Carver did with the Phase Linear stuff – it blowed up
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post #30 of 41 (permalink) Old 10-26-2004, 05:43 PM
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RE: Question for stereo electronics afficionados

Essentially ohms is a measure of resistance. The less resistance the more current the speaker will suck. An ideal amplifier has the ability to "double down" everytime impedance is halved. ie., if it's pushing out 100 watts at 8 ohms then it should push 200 at 4, 400 at 2, 800 at 1 ohm. In electronic jargon it's called a perfect voltage source. Largely theoretical at the moment.

Current matters because impedance isn't always the same throughout the speaker's frequency range. Although speaker sensitivity may be rated, say, 88db at 8 ohms, the impedance may drop below four ohms at different frequencies. I've seen impedance plots which dropped below 2 ohms at low frequencies. If your amp "sees" a low impedance load and can't produce enough current to maintain proper voltage then all kinds of distortion happens. Bad for everyone's hearing and general health.

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