Hi
Tomorrow I am going to look at a 1983 Denon PMA 750 Hi Fi amplifier to purchase for my new set up. I'm intending to hook two subwoofers to it which will be powered by my new Crown XLI 800 PA amp
To do this I've already purchased some inline LFE LPF crossovers.
The Denon PMA 750 does not have a subwoofer out RCA on it so the input mismatch I am concerned about seems irrelevant. Crown XLI 800 has RCA inputs and selectable input sensitivity on it 0.775 to 1.4v It is made so it is compatible for home use. The Denon has an input sensitivity of 150mV (pic below)
Does the input sensitivity matter at all as it looks as if there is a mismatch in the specs below (PMA screenshot specs)
Im intending to use this method below as in screenshot, no RCA?
Denon PMA 750 input SPECS
Crown XLI 800
Tomorrow I am going to look at a 1983 Denon PMA 750 Hi Fi amplifier to purchase for my new set up. I'm intending to hook two subwoofers to it which will be powered by my new Crown XLI 800 PA amp
To do this I've already purchased some inline LFE LPF crossovers.
The Denon PMA 750 does not have a subwoofer out RCA on it so the input mismatch I am concerned about seems irrelevant. Crown XLI 800 has RCA inputs and selectable input sensitivity on it 0.775 to 1.4v It is made so it is compatible for home use. The Denon has an input sensitivity of 150mV (pic below)
Does the input sensitivity matter at all as it looks as if there is a mismatch in the specs below (PMA screenshot specs)
Im intending to use this method below as in screenshot, no RCA?
Denon PMA 750 input SPECS
Crown XLI 800
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Does the Denon have a preamp out? That would be the best way to go if there's no "sub out" jack. If not, it's not hard to add if you're handy. Do you have electronics experience?
The way you show will work but it's just terrible. I would consider finding a unit that matches your needs.
The way you show will work but it's just terrible. I would consider finding a unit that matches your needs.
Thanks Jack, I wanted to buy the Denon because I would enjoy a project amplifier I could restore for fun and this website below made it easy as it supplies all the capacitors in a kit.
But as I'm new to all this I have no idea what old amp to try first for a beginner upgrade and the sensitivity mismatch complecating things further meant that I can't use most of my modern equipment with a pre 1983 amp.
I decided against the Denon but am a little disappointed maybe someone could suggest a good amp for a beginner to start with 50 RMS or above that I could adapt for my two subwoofers. I am in Australia we have most of the big name brands here.
Denon capacitor kit.
Denon PMA-750 Upgrade Kit Audio Capacitors
But as I'm new to all this I have no idea what old amp to try first for a beginner upgrade and the sensitivity mismatch complecating things further meant that I can't use most of my modern equipment with a pre 1983 amp.
I decided against the Denon but am a little disappointed maybe someone could suggest a good amp for a beginner to start with 50 RMS or above that I could adapt for my two subwoofers. I am in Australia we have most of the big name brands here.
Denon capacitor kit.
Denon PMA-750 Upgrade Kit Audio Capacitors