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How to eq 2+1 system
- Thread starter yigitboy
- Start date
PreSonus Eris E3.5 Powered Monitor Review
PreSonus Eris E3.5 Powered Monitor Review
www.erinsaudiocorner.com
*A more complex/better approach would be to implement the crossover between the mains/sub using a DSP which would have many more adjustments.
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- Thread Starter
- #3
hpf is on and lpf is set to 130hz but speakers still playing low frequencies , how can i block them ?
You might not be able to tell a difference with the Eris 3.5 between HPF on and off as its fixed at 80Hz and they are already rolling off by 80Hz.
Do you have an audio interface with phantom power? if so a ECM8000 is a cheap way of measuring whats going on.
Do you have an audio interface with phantom power? if so a ECM8000 is a cheap way of measuring whats going on.
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- Thread Starter
- #5
No interface only Topping D30 dac. I am trying to calibrate the system using an android spl meter. The sub starts to rattle around 85db. I am not sure if the spl meter software is accurate but the sound doesn't seem to be extremely loud. Is it normal or should i use %50 windows volume
This approach won't work. The SPL meter will not have flat response over frequency.
You could get this as a basic measurement setup:
www.thomann.de
www.thomann.de
www.thomann.de
www.thomann.de
Sub rattling could be the frequency is below its tuning frequency and the sub is running out of excursion.
You could get this as a basic measurement setup:
Behringer U-Phoria UM2 B-Stock
B-Stock, Behringer U-Phoria UM2, USB Audiointerface 16bit 48kHz, 2 inputs and 2 outputs, 1x combi input XLR/6,3mm jack, 1x 6,3mm jack, Xenyx Design mic-preamp incl. 48V phantom power, Hi-Z input, signal and clip indicator, direct monitoring, 6,3mm...
www.thomann.de
Behringer ECM8000
Condenser Measurement Microphone Polar pattern: Omnidirectional, Operation via phantom power from +15 V to + 48 V, Low-noise XLR output with gold-plated contacts, Diameter: 12.7 mm, Incl. storage box
www.thomann.de
the sssnake SM6BK
Microphone cable XLR 3-pin male - XLR 3-pin female, Length: 6 m, Diameter: 6 mm, Wire cross-section: 2 x 0.22 mm², Colour: Black
www.thomann.de
the sssnake SPR2030
Audio Cable 2x 6.3 mm jacks to RCA, One channel highlighted with red ring, Length: 3 m
www.thomann.de
Sub rattling could be the frequency is below its tuning frequency and the sub is running out of excursion.
- Thread Starter
- #7
Thanks for the advices , now i understood that my measurement is inaccurate . There is more than 5db spl difference when i move my phone 1 foot away. It is a complicated job. At least for meThis approach won't work. The SPL meter will not have flat response over frequency.
You could get this as a basic measurement setup:
Behringer U-Phoria UM2 B-Stock
B-Stock, Behringer U-Phoria UM2, USB Audiointerface 16bit 48kHz, 2 inputs and 2 outputs, 1x combi input XLR/6,3mm jack, 1x 6,3mm jack, Xenyx Design mic-preamp incl. 48V phantom power, Hi-Z input, signal and clip indicator, direct monitoring, 6,3mm...Behringer ECM8000
Condenser Measurement Microphone Polar pattern: Omnidirectional, Operation via phantom power from +15 V to + 48 V, Low-noise XLR output with gold-plated contacts, Diameter: 12.7 mm, Incl. storage boxthe sssnake SM6BK
Microphone cable XLR 3-pin male - XLR 3-pin female, Length: 6 m, Diameter: 6 mm, Wire cross-section: 2 x 0.22 mm², Colour: Blackthe sssnake SPR2030
Audio Cable 2x 6.3 mm jacks to RCA, One channel highlighted with red ring, Length: 3 m
Sub rattling could be the frequency is below its tuning frequency and the sub is running out of excursion.
You do get strong positional variation in spl if you are generating just one frequency no matter the meter. When you do frequency response sweeps you often average over multiple positions and or apply smoothing to reduce these variations.
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