Philips AG9018 question (Algemeen)
door ryanmerc 
, 19.10.2016, 21:43 (2959 dagen geleden)
Hi,
I have a ag9018. Can I use the 8/16 ohm output and the 800ohm output simultaneously? Example, 8/16 ohm driving woofers and 800ohms driving mids/and highs.
Ryan
Philips AG9018 question
door castafiore2010 , Winsum (Gn.), 20.10.2016, 04:32 (2958 dagen geleden) @ ryanmerc
It is theoretically possible to make such connections, but in practice it will probably cause problems that make the amplifier unstable. Limit yourself in using only the 8 Ohm connection for experiments. The 800 Ohm connection needs special designed dividing networks and speakers made by Philips. Beside that the amplifier has only 10 Watt power pro channel, so you need speaker designs of high efficiency.
Philips AG9018 question
door Laurens , Zaandam, 20.10.2016, 08:32 (2958 dagen geleden) @ ryanmerc
If you would use filters for the speakers, i don't see a problem. If you put full range speakers on both outputs, you will overload the amplifier a bit.
For instance: make sure the woofer only works from 0 to 80hz. Filter in such a way the impedance of that system rises and no current is drawn from the amplifier.
The other speakers are the opposite - make sure they start at 80.
A small overlap doesn't do much harm.
You might need to take phase shifts in consideration. I have not checked if the phase of the 800 and the 8 ohm outputs are shifted.
--
Ik neem op kleine schaal reparaties voor anderen aan voor een leuke prijs.
Stuur een mailtje bij interesse.
Philips AG9018 question
door John Hupse † 
, Schoonhoven, 20.10.2016, 08:50 (2958 dagen geleden) @ Laurens
You might need to take phase shifts in consideration. I have not checked if the phase of the 800 and the 8 ohm outputs are shifted.
The low-impedance and high-impedance output signals are in-phase.
Can I use the 8/16 ohm output and the 800ohm output simultaneously? Example, 8/16 ohm driving woofers and 800ohms driving mids/and highs.
this is possible, the Philips AG9018 amplifier offers a unique flexibility as it can handle 8/16 ohm loads and 800 ohm loads at the same time.
Of course you have to use an additional 8 or 16 ohm low-pass filter for the woofer, and an additional 800 ohm high-pass filter for the other speakers.
It is even possible to connect a 800 ohm speaker to the left channel, and a 8 ohm speaker to the right channel.
Philips AG9018 question
door ryanmerc , 27.10.2016, 20:59 (2951 dagen geleden) @ John Hupse †
Thanks so much!