Folter
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« Reply #45 on: April 07, 2025, 08:37:02 PM » |
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You wrote you had a pair AD3700AM to use. And you wanted to buy a pair more (succes, even in Holland rare). And you did not mention the AM with the AD4690(AM). Rather important. I was concentrating on your wish about the AD3700AM. The 3700 is too poor for a good bass, for that you need the 9710A f.e. Philips combined sometimes two OTL speakers to get 800 ohm, f.e. two of 400ohm in series. I have used that several times but in mono combinations. If you want two different 800ohm speakers in a cabinet you need a cross over filter. Or you need a bi-ampli stereo amp, or two bi-ampli mono blocks and a pre-amp. I wish you succes.  If I make two speakers with the same drivers (for example, one with two 3700AD drivers and the other with two of the same) can I do without a crossover filter? |
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Folter
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« Reply #46 on: April 07, 2025, 08:41:49 PM » |
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Folter
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« Reply #47 on: April 07, 2025, 08:46:54 PM » |
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Until now I had never heard the sound of a tube amplifier. And when a month ago I heard the AG9018 at a friend's vintage equipment dealer... My world turned upside down. I listened to an old tube Philips with 8-ohm Isophone speakers with my mouth open in amazement... Even though the sound source was an MD player(((. And after much deliberation we agreed on the price, and I can't wait to go to him again and pick up the AG9018!!!
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Folter
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« Reply #48 on: April 07, 2025, 08:49:06 PM » |
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Tell me where I can buy this?  |
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simon
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« Reply #49 on: April 07, 2025, 08:51:48 PM » |
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Philips AG9018 amplifier schematic is not OTL amplifier.
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Folter
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« Reply #50 on: April 07, 2025, 08:52:14 PM » |
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And this is it  |
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simon
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« Reply #51 on: April 07, 2025, 08:56:50 PM » |
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RR1957
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« Reply #52 on: April 07, 2025, 08:57:25 PM » |
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Tell me where I can buy this? As I wrote you can buy them still in metal. The old plastic ones are rare and not made annymore. |
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Kind regards, René.
Machines more sensitive than the ears they play to
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RR1957
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« Reply #53 on: April 07, 2025, 08:58:32 PM » |
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And this is it You do not need this one, typical Philips for a short time. |
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Kind regards, René.
Machines more sensitive than the ears they play to
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Folter
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« Reply #54 on: April 07, 2025, 08:59:10 PM » |
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Philips AG9018 amplifier schematic is not OTL amplifier.
How not? It works in two schemes: 8-16 Ohm and 800 Ohm |
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RR1957
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« Reply #55 on: April 07, 2025, 08:59:25 PM » |
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 btw  I repeat this one of me. |
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Kind regards, René.
Machines more sensitive than the ears they play to
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Folter
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« Reply #56 on: April 07, 2025, 09:01:41 PM » |
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You do not need this one, typical Philips for a short time.
Why is it not needed? The tuner and phono are connected to the AG9018 via this plug! |
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RR1957
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« Reply #57 on: April 07, 2025, 09:01:48 PM » |
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Philips AG9018 amplifier schematic is not OTL amplifier.
As I showed earlier here it IS. Please study carefully if you want something.  You can choose for OTL or 8-16 ohm. That is why the AG9018 is two different connections for each speaker side. |
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Kind regards, René.
Machines more sensitive than the ears they play to
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Folter
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« Reply #58 on: April 07, 2025, 09:03:00 PM » |
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As I wrote you can buy them still in metal.
The old plastic ones are rare and not made annymore.
Where i can buy? |
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simon
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« Reply #59 on: April 07, 2025, 09:03:52 PM » |
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