Goodbye, Kenwood KA-7100- glad to have known you!

thedelihaus

Nocturnal transmissions
Well, this week I'll ship out my Kenwood KA-7100 to it's new owner.

Of all the vintage pieces I've owned, it was Kenwood gear I had the most of.

Now, maybe not my personal, top favorite, but surely in the top 3 or 4.

What makes this Kenwood so good?

For starters, the dual power supply, a unique to Kenwood version utilizing one transformer housing.

The layout is all-business, with machined knobs placed intuitively across the fascia of the unit.

Features? Items like speaker-reverse, although seemingly overkill, are excellent when trying to isolate elements of a recording or possible speaker driver mishap. Plenty of recording options. High and subsonic filter. And of course all the standards.

Then there's the recessed volume knob, with a healthy, soft click with each small turn, and a polished deep inset bezel, to me the most beautiful volume knob on any vintage gear.

What about the stamped lettering? Indeed, not just silkscreened on top of the aluminum, but actually embossed in the metal, with the paint comfortably nestled in the recesses. Pure class.

Build quality is very nice indeed- solid aluminum faceplate, felt-protected switches, quality caps and potentiometers, and rigid casing.

The speaker connectors are good- better than the Yamahas, Marantz and Sansui of the time, in my opinion- in fact, much better. I'd replace the others much quicker than even considering doing so with the Kenny, as they proved to me not to be perfect, but superior to the others and fairly easy to use.

The sound? Well, it absolutely shamed my later-model Kenwood integrated. although the later model is a toip of the line digital period piece, and twice the power, the Kenwood efortlessly showed it up. much cleaner and clearer, a bit rich with my personal matings of room and speakers, the 60-65wpc rated 7100 always sounded fabulous, and drew many a compliment.

Compatability? The 7100 played well with any pair of speakers. Polk Monitor 7s excelled with 'em, as did the boston Acoustics A70s and A150s, the DCM CX-27s, the JBL L-46s, and the Large Advents.

Downsides?

Only one, and I'm really nit-picking, really reaching here. No pre-out/main-ins. Not that I ever used them with any of my integrated amps. Ever. But if you that option, somewhere here at AK is AK member and tech Echowar's retrofit of such a pair of pre-out/main-ins. So it can be done.


Kenwood also supplied some models with lovely meters, such as the 5700 and 6100. and Kenwood's meters are lovely to watch. But the 7100 is much more stout than the (still excellent 5700), and more robust than the metered 6100 (though closer). and that inset volume knob, exclusively on the 7100, is far classier than the meters were.

I've always felt the 8100, though more powerful, isn't nearly as good looking, and the 9100, although the TOTL main integrated offered at that time (other than the supremes), not worth persuing due to the "unobtanium" (exclusively to the 9100 only) power supply parts that could render the unit a doorstop upon failure. sure, there's a work-around, I'm told, but at what cost to the sound of the unit, and at what cost to your wallet?




So, why am I selling this unit?

I had it at work as one of my office rotations, but was fearful, as the co-workers already blew up one unit, a Marantz 2225 on me.

so it came home, and sat idle among the at one time stacks of pieces I had around.

Spring cleaning came early, and 90% of my collection, which saw light rotation was sold off.

I kept this piece, as it was possibly the nicest of any of my kit, tied with a near pristine Marantz 1060.

No, not perfect, but exceptionally clean, well cared for, and fully serviced.

Alas, not quite enough power to run the notoriously hungry and demanding Thiels, Vandersteens, Dahlquists and AR9LSIs, and with the sale of the majority of my other speakers that played off this (my Polk monitor 7s, Large Advents, Boston Acoustics A150s, A200s, and many other classics), and without the remote-controlled ability I require of other pieces in my home (demanded, due to my paralysis), the Kenwood sat lonely.

It will be shipped off in a few days or so, as long as all goes well and as planned, freshly DeOxited, well packed, and singing strong, to an AK member, who I wish as much enjoyment with it as it has provided me.

Long live the ubiquitous Kenwood KA-7100. Maybe not a top of the line model, but definately up there, and a true classic in the silver faced period of hi-fi.
 
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That's a nice homage you wrote there. I'm sure you're going to miss that unit and will be sorry to see it go.

A cousin of mine told me that when he went to a recording studio school in Los Angeles back in the '70s they used many brand new KA-7100 because they sounded so good and were relatively inexpensive. When he got back from the school he bought one for himself and still has it.

I always liked the recessed plastic insert with the hash marks that surrounds the volume knob. That's a unique look for all the Kenwood models.
 
That's a nice homage you wrote there. I'm sure you're going to miss that unit and will be sorry to see it go...

Thank you for the kind words.

Indeed, it'll be sad to see it go, but with it not getting much use, I'll be happy to know this well-cared-for unit will be the centerpiece of a system enjoyed for a fellow AKer.

Now, gotta work on that ride over to FedEx...
 
Deli, that's as nice a eulogy as I've heard lately; and for audio gear, at that! A year or so ago I sold off a pristine 7100--although I needed the $, that's my biggest audio regret. It really is a beautiful piece, definitely on my radar screen for future acquisition!
 
I had one of those. It was okay. And a 6xxx series tuner. Paid $50 for them at a local thrift right around Christmas 06'. I used them until spring 07'. It was a very neat looking amp. But it had no bottom end. I think it needed some work in all fairness. I sold the set with a small set of cube speakers for $120. The best thing Kenwood ever made was their TT's. I still have not become emotional with this stuff yet. At least not when I can sell it for a nice profit.
If it wasn't so ugly I would have kept it. But I really liked an HK 505 Integrated that I gave to merrylander to fix an SX 850. That was one of the best sounding units I have used yet. I never asked Rob what he thought of it. I don't think he liked it. At least not as much as I did.
thedalihaus, there is so much great stuff out there as you well know. Just hang in there, and get another one restored to spec if you liked it so much.
 
I have one, got off CL for $60(?) I think. got it after selling all my rcvrs and going straight to integrated amp and it showed up so I grabbed it.
I agree with you in most areas sept 2.
I dispise those speaker terminal connectors with some kinda sideways insertion of wires and not spring loaded. My biggest gripe.
The dual power supply is a feeble attempt to compete with the other mfrs in that arena. A single xfmr with dual coils is really not all that much better that a single coil, but it's a step in the right direction and does an adequate job I guess. The filter caps are abit on the dimutive side I think, furthering my feeling of abit less than substantial.
Having said all that I have no complaint in performance from the pwr suply. It does produce quite substantial quality audio, so kinda fades to not a big deal after all.
It sure is a good looking piece of stereo and I'm not letting it go, but at the moment I'm running a Sansui AU517 65 watt integ amp with true seperate dual power supplies, so the KW is resting til I get another set of spkrs for it.
Besides, it's my 1st and only KW piece of vintage audio so a good candidate for preservation, by me. I'm glad I got it.
 
Sniff...that was...sweet. :tears:

Tonight, when I get home, I'm going to hug my KA-8100. Even if it's not as "nice" looking as the 7100, it's one of my babies and needs to be loved! :yes: I just hooked mine up again after a long hiatus and it sounds great!

Seriously, the 7100 is a nice looking and sounding unit, and whoever got yours is getting a gem. :thmbsp:
 
I had one for a while. Beautiful faceplate. Liked the 3 position loudness control. The knurled binding posts were too close together for my big hands, other than that they were fine. I had mine paired with Bose 901 IVs which are more efficient than the earlier ones and it sounded amazing in my basement. But when I moved up to better speakers I needed a more powerful amp, like you.

Plentiful and cheap on eBay. Haven't checked lately but used to go for easily less than $100, sometimes way less.

Nice writeup, Paul..
 
I agree, nice write-up and eulogy!

Particularly significant to me as a KA-7100 was my first piece of quality hi-fi gear. I can remember poring over product brochures from Pioneer and other manufacturers for weeks, and coming to the conclusion that the Kenwood was the way to go based on much lower distortion specs.

I used that amp for ages until a channel went out, replaced it with a newer and presumably better unit that didn't sound as good. I hauled the KA-7100 around with me for years and finally took it to Goodwill where I bet it got tossed....didn't find AK in time :tears:

I've almost pulled the trigger a couple of times on an eBay 7100 just for nostalgia purposes. And I have a $20 KT-7500 to go with it. But I may pick up a KA-7300 instead.
 
I still have my Kenny 7100 around and it's not going anywhere anytime soon. :no:

I agree that it's a very nice unit... goes along with all my other Kenwood amps
and receivers... and who am I to break up a set? ;)

Scott
 
I had one of those. It was okay....It was a very neat looking amp. But it had no bottom end...

I'm guessing you had a few caps out if the bottom end was that weak- I've come across a good handful of Kenwood tuners and amps with aged caps that didn't have the oomph.

This one has good kick to it. My guess is an easy life with light loads, and a well-ventilated location keeping the caps cool with plenty of circulation and cool fresh air.

...I agree with you in most areas sept 2.
I dispise those speaker terminal connectors with some kinda sideways insertion of wires and not spring loaded. My biggest gripe...

Yes, they are indeed loathed by many, as they are close together. Tough for big fingers and for folk who swap out speaker wire often.

I have medium-sized hands, and am pretty dexterous, so no issue for me. And I used a Niles speaker switcher to handle any frequent speaker in-out swaps.

...The dual power supply is a feeble attempt to compete with the other mfrs in that arena. A single xfmr with dual coils is really not all that much better that a single coil, but it's a step in the right direction and does an adequate job I guess...Having said all that I have no complaint in performance from the pwr suply. It does produce quite substantial quality audio, so kinda fades to not a big deal after all...I'm glad I got it.

I felt the same way about it, a corner-cut approach, but the performance is there somehow, and therefore convinced me it was more than adequate for the unit. I like it better than the true single power supply units from Kenwood and others.

...Seriously, the 7100 is a nice looking and sounding unit, and whoever got yours is getting a gem. :thmbsp:

Thanks, Doug. The 7100 isn't flawless or perfect, but it's the nicest condition one I've ever come across personally. I remember you commenting on how clean it was.

...Plentiful and cheap on eBay. Haven't checked lately but used to go for easily less than $100, sometimes way less.

Nice writeup, Paul..

Usually $65 to $120, depending on condition, up to $150 for really nice models.

They are plentiful, thus keeping the price down. I'm convinced they'd command more if not as common as they are.

The low s/n ratio you mentioned, the build quality, and the competitive price helped keep this Kenwood/Trio a best seller.
 
thedelihaus, you left out the part about "I think it needed some work in all fairness."

Oh, I saw that. I agree.

Indeed your post was well-written and informative, and I'm glad you contributed to the thread.

:thmbsp::thmbsp::thmbsp:
 
yeah thedelihaus, it is hard to fault that anemic looking power supply. The stellar audio performance belies what would seem to be a somewhat weak looking supply. And that's what matters in the final analysis. The KA7100 is a fine piece of hifi and not all that costly in the vintage market altho not all that many show up. Mine appeared out of the blu just when I was in the market for a good integ. amp. And I didn't have to pay shipping.
 
yeah thedelihaus, it is hard to fault that anemic looking power supply. The stellar audio performance belies what would seem to be a somewhat weak looking supply. And that's what matters in the final analysis. The KA7100 is a fine piece of hifi and not all that costly in the vintage market altho not all that many show up. Mine appeared out of the blu just when I was in the market for a good integ. amp. And I didn't have to pay shipping.

Priceless (and worth a few laughs) though, to the unknowing, to pop the hood after reading a "Dual Power Supply" and seeing a single transformer in there!:D

Glad with the help of one of some of Echowar's posts I figured it out and realized it's a modified single xfmr with dual coils. Before that, I was baffled!
 
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I'm guessing they are plentiful because they sold alot. The 7100 would have competed with, among others, the Pioneer SA-8500 and the Sansui AU-517. I had an 8500 back in the day. Listed for $400, on discount you could get them for $267, which is what I paid around '76. I loved it. Then I got the 7100 just a few years ago. The specs were the same for power but the Kenny had lower distortion. Not sure what the Kenny listed for, but could've been a little less. If so the value would explain the prevalence. The Sansui at 65 a side probably was a bit more than $400. Those 2 Sansuis were also heavily advertised.

I'm partial to the Sansui, mostly personal preference, but the Kenny probably rates a little better than the Pioneer in my book. All three are nice for different reasons.
 
wow. quite a tribute. i'll remember that, should i ever be in the market for another kenwood, or if my GAS (gear acquisition syndrome) gets worse.
 
wow. quite a tribute. i'll remember that, should i ever be in the market for another kenwood, or if my GAS (gear acquisition syndrome) gets worse.

Your 5700s are pretty nice too, Jim.

No dual power supply, and pushed to very loud levels they start to strain, but for the volume you're required to keep it at, the 5700 is more, more than plenty.

And those Kenwood style dancing meters on the 5700 are really nice to look at, no?:yes:
 
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