Has anyone tried powering a He6 of any variant off the Pa5? @JohnYang1997
The same question has been asked many times, but the PA5 cannot be used with an unbalanced connection.Hi all,
can I use a RCA to TS (unbalanced) cable? Can it damage the amp?
EDIT: Just to answer your questions: #1 Yes. #2 No. It has been done and works as shown in the video.Hi all,
can I use a RCA to TS (unbalanced) cable? Can it damage the amp?
Sound will be produced even with such a connection. However, the distortion increases and the output power is reduced to less than half. The operation of the amplifier is similar to SE, and the ground is half the value of the power supply voltage. There is no point in using PA5 with this.It has been done and works.
So, it is safe, when turning off before plugging/unplugging cables and such, just reduced performance of the amp producing a lower quality sound?Sound will be produced even with such a connection. However, the distortion increases and the output power is reduced to less than half. The operation of the amplifier is similar to SE, and the ground is half the value of the power supply voltage. There is no point in using PA5 with this.
You shouldn't do it unless you have no knowledge of electronic circuits and just want to make a sound
Sound will be produced even with such a connection. However, the distortion increases and the output power is reduced to less than half. The operation of the amplifier is similar to SE, and the ground is half the value of the power supply voltage. There is no point in using PA5 with this.
You shouldn't do it unless you have no knowledge of electronic circuits and just want to make a sound.
Exactly what Gianni said. I did the same thing when I had to wait for balanced dac to come in. I wanted to make sure pa5 was not defective while I waited. Pa5 always had more power than I needed, and unbalanced was no exception. It worked fine and beats not being able to use my speakers until dac came in.I'm temporarily using an unbalanced DAC with the PA5, awaiting the release (and @amirm review) of the Topping DX5
With all of this RCA to TS adapter talk you should test the distortion and power with a standard 2v RCA feed and 2.6v RCA signal.Hello All,
I just purchased a silver one of these to test drive with the APx555.
This amplifier will take over tweeter duties driving JBL D2 compression drivers in a tri-amp system.
If things work out 3 of these things will take the place of the large bulky Crown amplifiers that I am using.
Thanks DT
With all of this RCA to TS adapter talk you should test the distortion and power with a standard 2v RCA feed and 2.6v RCA signal.
A few posts later it is said that PA5 should not make such connections with a subwoofer.So, odd question. Until/if I purchase a proper crossover DSP unit would wiring my active sub (Dayton SUB1200) this way be harmful?
Sometimes I want to play music with the sub off but speakers on to not bother the bedroom below mine.
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Do you have a reference for that - I couldn't find anything on the SVS website.A few posts later it is said that PA5 should not make such connections with a subwoofer.
This is not the case, however, for some subwoofers.
For example, in the case of SVS SB-1000 Pro subwoofer, the speaker level black (-) terminals are isolated from each other and from the amp chassis, so that you can safely use PA5 with a SB-1000 Pro with speaker level connections as you described .
For the same reason, a SB-1000 Pro can be used with no problem with speaker-level connections with a Class D amplifier whose black terminal output is always about 10 V higher than the chassis.
I checked the insulation of my SB-1000 Pro terminal blocks with a digital multimeter.Do you have a reference for that - I couldn't find anything on the SVS website.
I don't know if it matters but the voltage would typically be about half the power supply voltage, so a lot more than 10V in this case.A few posts later it is said that PA5 should not make such connections with a subwoofer.
This is not the case, however, for some subwoofers.
For example, in the case of SVS SB-1000 Pro subwoofer, the speaker level black (-) terminals are isolated from each other and from the amp chassis, so that you can safely use PA5 with a SB-1000 Pro with speaker level connections as you described .
For the same reason, a SB-1000 Pro can be used with no problem with speaker-level connections with a Class D amplifier whose black terminal output is always about 10 V higher than the chassis.
Yes, but since it is OK with the PA5 BTL outputs, I think it does not matter if it could raise up to +20 V or more.I don't know if it matters but the voltage would typically be about half the power supply voltage, so a lot more than 10V in this case.
I first set the A-DP 400 @ 40V / 10A, The PA5 simply refused to switch on, like it was going into protected mode
lucky one that you didnt damage it, they usually fail with a short. Vin on Vdd would blow up the tpa3255 or worse, the potted secret topping module.Approachingthe absolute maximum rating for the VIN pin may cause the voltage on the PH pin to exceed the absolute maximum rating.
That is because the PA5 uses a TPS5430 Step-down IC which is only rated up to 36Volts.
40V Absolute maximum with following note:
lucky one that you didnt damage it, they usually fail with a short. Vin on Vdd would blow up the tpa3255 or worse, the potted secret topping module.