700 Series II Build
- Thread starter Hexis22
- Start date
I received the amp from Eric a week ago. The 700 sounds so clean and am so impressed with it.
Eric has gone above and beyond with all the help and answering all my questions. He did an amazing job with excellent customer service. Cant recommend him enough.
The amp has shown / highlighted a few issues I am having with the JBL l100t's which probably need some work.
A deal popped up on 2 pairs of the JBL l100 Century's and as much as I shouldn't have (wife is not happy lol), I picked them up.
Running just 1 pair of the l100 was a little underwhelming compared to the l100t's. Apparently the l100t's can take 200-400wpc vs the l100 is 50-100wpc. I like the highs and sub on the l100t and the l100 has better mids.
My shop is 2,000sf so its nice to be able to fill the space.
I tried running both pairs of the l100's in parallel and was pretty impressed on the higher end of volume. They really come alive at 70%+ volume but are not as nice for my ears at the lower volumes.
To my surprise when the 700 is running the 2 pair in parallel the amp got less hot then running the single pair of l100t's at 70-90% for a couple hours.
I dont want to hurt the amp and all the work Eric put into this thing. I really dont want to damage the WOPL 700II.
What do you guys think about running 2 pairs in parallel? At times this amp will run at 50-70%+
for 8-12hrs a day.
Might be more fitting to just make another dedicated post but thought I would start here.
Eric has gone above and beyond with all the help and answering all my questions. He did an amazing job with excellent customer service. Cant recommend him enough.
The amp has shown / highlighted a few issues I am having with the JBL l100t's which probably need some work.
A deal popped up on 2 pairs of the JBL l100 Century's and as much as I shouldn't have (wife is not happy lol), I picked them up.
Running just 1 pair of the l100 was a little underwhelming compared to the l100t's. Apparently the l100t's can take 200-400wpc vs the l100 is 50-100wpc. I like the highs and sub on the l100t and the l100 has better mids.
My shop is 2,000sf so its nice to be able to fill the space.
I tried running both pairs of the l100's in parallel and was pretty impressed on the higher end of volume. They really come alive at 70%+ volume but are not as nice for my ears at the lower volumes.
To my surprise when the 700 is running the 2 pair in parallel the amp got less hot then running the single pair of l100t's at 70-90% for a couple hours.
I dont want to hurt the amp and all the work Eric put into this thing. I really dont want to damage the WOPL 700II.
What do you guys think about running 2 pairs in parallel? At times this amp will run at 50-70%+
for 8-12hrs a day. Might be more fitting to just make another dedicated post but thought I would start here.
He suggested a lot more then that, but if you want to take that for face value go ahead.
"Running 2 sets of speakers off the same amp in either configuration will always have some form of compromise.
From an audio quality perspective, running in parallel will likely sound better but potentially cause issues with the amp. Depending on duration of listening, amp temperature, and volume level, the performance of the amp with low impedance loads below 4 ohms can degrade and potentially engage output protection circuits. Even when speakers are nominally rated at 8 ohms, the actual value depends on the frequency of the signal and can sometimes dip as low as 2 ohms.
Running with speakers in series places each crossover in series and will most likely degrade sound quality.
I would try each configuration to determine what works best, just be careful at loud levels in parallel config by listening for any abnormal sounds. The upgraded 700 is a very robust amp and may handle those speakers in parallel just fine.
See attached file for the original PL700 Series II owners manual for reference and general reading if you don't already have. See page 7 for mention of speaker connection and limitation of 4 Ohm speakers."
"Running 2 sets of speakers off the same amp in either configuration will always have some form of compromise.
From an audio quality perspective, running in parallel will likely sound better but potentially cause issues with the amp. Depending on duration of listening, amp temperature, and volume level, the performance of the amp with low impedance loads below 4 ohms can degrade and potentially engage output protection circuits. Even when speakers are nominally rated at 8 ohms, the actual value depends on the frequency of the signal and can sometimes dip as low as 2 ohms.
Running with speakers in series places each crossover in series and will most likely degrade sound quality.
I would try each configuration to determine what works best, just be careful at loud levels in parallel config by listening for any abnormal sounds. The upgraded 700 is a very robust amp and may handle those speakers in parallel just fine.
See attached file for the original PL700 Series II owners manual for reference and general reading if you don't already have. See page 7 for mention of speaker connection and limitation of 4 Ohm speakers."
Neither of those illustrations show a parallel set up but it IS your amp so you can connect it however you wish. I notify my customers that connecting in parallel would void any warranty. Had I known that Eric didn't recommend it either, I would have left it at that. But YOU asked. (What do you guys think about running 2 pairs in parallel? At times this amp will run at 50-70%+)
All the stuff out of the manual really has zilch to do with a WOPL since it replaced all that old crap and doesn't even resemble the original.. Carry On...... But, if you don't like the answers, you can ask the designer and THAT would trump anything us builders say. Why ask what we think if you are gonna get all indignant about it? (He suggested a lot more then that, but if you want to take that for face value go ahead. )
All the stuff out of the manual really has zilch to do with a WOPL since it replaced all that old crap and doesn't even resemble the original.. Carry On...... But, if you don't like the answers, you can ask the designer and THAT would trump anything us builders say. Why ask what we think if you are gonna get all indignant about it? (He suggested a lot more then that, but if you want to take that for face value go ahead. )