justin bieber audiophile and dynaco speakers - AVS Forum
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post #1 of 8 Old 12-19-2012, 05:39 PM - Thread Starter
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I made a good thrift store score today on a kenwood solid state receiver and a pair of dynaco a25 speakers. I messed with the kenwood receiver and justin bieber beauty and the beast song played. i had to make sure that the dynaco speakers weren't blown so i cranked up the bass and cranked up the volume. i know that it's not great music like jazz, but the other stations were commercials. would you describe justin biebers music as audiophile? it had good bass response when testing it. is the kenwood 5400 model. the kenwood was 13 bucks. the dynaco speakers 10 for the pair. i see they are much higher on ebay. anyone here like dynaco?
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post #2 of 8 Old 12-19-2012, 06:52 PM - Thread Starter
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do you like the dynaco speakers as much as the dynaco amps?
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post #3 of 8 Old 12-19-2012, 08:03 PM
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That KR-5400 for $13 is a great score. It has 35wpc so it isn't a powerhouse. I've owned many Kenwoods over the years - currently I only have one Kenwood - an integrated KA-4006 amp. Unlike today's Kenwood products the vintage stuff is well made - especially the 70's stuff. Audio gear was not only made well but they worked well. Your Kenwood has an excellent tuner. In the 70's it was important - unlike the attitude of receiver makers today where the tuner is more of an afterthought.

As for Justine Beiber - I'll leave that to you. I've never heard him that I know of - and have no plans on listening to him.

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post #4 of 8 Old 12-19-2012, 08:27 PM - Thread Starter
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the other kenwood that was at the store looked similar, but was much smaller so I got this one instead. I know that I have to many speakers and amps but I couldn't pass up the kenwood. it has a better tuner then my zenith. i laughed when i saw a cheaply made klh surround sound receiver for 50 bucks the other day at goodwill. the kenwood and jbl speakers and pioneer mini stereo system that used to cost 600 bucks when it first came out i got at different salvation army. the only goodwill deals that i scored big on ever were the mission speakers and the surround sound yamaha receiver for 15.
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post #5 of 8 Old 12-19-2012, 08:29 PM - Thread Starter
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justin bieber is a famous pop singer thaT a lot of teen girls drool over and go crazy for. he is not as good as a mozart lol.
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post #6 of 8 Old 12-19-2012, 08:30 PM - Thread Starter
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this kenwood even says the words solid state on it. to bad that it's only 35 watts.
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post #7 of 8 Old 12-20-2012, 03:59 AM - Thread Starter
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knucklehead did you ever get into the dynaco amps? I hear people still talk about making dynaco clone amps today. I never got to hear a dynaco amp, but from what I hear they were pretty amazing.
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post #8 of 8 Old 12-20-2012, 06:04 AM
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Quote:
Originally Posted by keyboardcat View Post

knucklehead did you ever get into the dynaco amps? I hear people still talk about making dynaco clone amps today. I never got to hear a dynaco amp, but from what I hear they were pretty amazing.

Speaking as an audiophile from back in the day when Dynaco tubed amps were mainstream, I can tell you that there really wasn't that much amazing about them. They were hardly unique. For example for about the same money you could buy a Dyna ST 70



or an Eico HF87



Their specs were:

Eico HF 87

Power Output: 35 watts continuous
Frequency Response: ±.5 dB from 5 cps to 100 kc.
Power Response: 20 cps to 20 kc within 1 dB of 35 watts at less than 1% distortion.
Intermodulation Distortion: Less than 1% at 35 watts (normally about .5%). Less than .05% at 1 watt.
Hum and Noise: Inaudible; better than 90 dB below rated power.
Sensitivity: 0.38 volts rms input for 35 watts out.
Output Impedances: 4, 8, and 16 ohms each channel.
Damping Factor: >11 20-20 KHz.
Minimum Channel Separation: 55 dB
Power Consumption: 215 watts 50/60 cps
Tube Complement: EL-34 (4), 2- 6SN7 , 1-12AX7, silicon diode rectifiers.
Size: 15" by 11" by 6" high.
Weight: 32 pounds.


Dyna ST 70

Power Output: 35 watts continuous, 80 watts peak each channel.
Frequency Response: ±.5 dB from 10 cps to 40 kc.
Power Response: 20 cps to 20 kc within 1 dB of 35 watts at less than 1% distortion.
Intermodulation Distortion: Less than 1% at 35 watts (normally about .5%). Less than .05% at 1 watt.
Hum and Noise: Inaudible; better than 90 dB below rated power.
Sensitivity: 1.3 volts rms input for 35 watts out.
Output Impedances: 4, 8, and 16 ohms each channel.
Damping Factor: 15.
Minimum Channel Separation: 55 dB
Power Consumption: 190 watts 50/60 cps
Tube Complement: EL-34 (4), 7199 (2), GZ-34.
Size: 13" by 9-1/2" by 6-1/2" high.
Weight: 32 pounds.

According to the 1964 Radio Shack Catalog the HF 87 could be had for $74.95 while the ST 70 could be had for $99.95, In 1965 the sales price of the Dyna dropped to $89.95. For comparison a similarly rated MacIntosh MC-240 ran about $288. On the test bench the Eico and the Dyna had similar technial characteristics while the MacIntosh had lower distortion at the frequency extremes and held its performance better as the tubes aged.
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