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  1. REW Forum
    I want to measure and understand THD and THD+N for of an electrical component and it's various modes. For example, I want to measure the THD and THD+N of the subwoofer preamp output on a real world bass intense track like Finding Nemo, Darla tapping the fish tank. The attached picture shows what...
  2. AV Home Theater
    Hi All, I am new to the home theater scene and setting up a 7.1 system. My recieve is Onkyo - TX-N1007. This is the first reciever I have owned. The volume displays in dB. It starts out in the negatives and gets louder in lower negative numbers. For example moving from -30 to -20, the volume...
  3. Home Theater Receivers | Processors | Amps
    Happy Holidays - I just got a new Elite VSX-21THX to replace an older pioneer AVR. I wanted it so I could avoid having my blu-ray player kick out the sound via multi-channel out... I don't want my AVR's bass management and speaker settings to be by passed. So, I have the VSX. I am confused...
  4. Home Theater Receivers | Processors | Amps
    I have a BD 390 blu ray player hooked up to an older (3 years old) Pioneer receiver via 7.1 Multichannel inputs (I have a VSX-1016). My Pioneer receiver does not have an HDMI audio input... and I opted to connect the blu ray player via the multichannel inputs because the BD player has on-board...
  5. REW Forum
    Hey guys, Here is my first test of Rew using standard laptop soundcard with the RS 4050 meter. I calibrated soundcard/spl meter and then i put pink noise in the system to -18db under speaker cal. but once i got my signals to ok and did my sweep it gave me a distortion alert. I read about this...
  6. REW Forum
    I have a custom-built sub in me basement with a BFD 1124 doing the EQ. I had Eq'ed it with a desktop once after install, but after getting a Turtle Beach USB soundcard for my laptop to measure my parent's sub, I thought I'd play some with mine. Here is the frequency response with Wayne's "hard...
  7. REW Forum
    I have finally made my first few full range plots of my system. First, thanks to all who did such a great job with the software and the help files. This is a great boost to improving our audio experience. I am using an ECM 8000 on my Home Theater PC. I calibrated the audio card and have...
  8. Home Audio Subwoofers
    Hello All, I recently purchased an Energy S10.3 to replace a stock sub that came with a surround package (Polk Audio RM6750) that have. The frequency responses for the satellite speakers and center channels are: 100Hz-24kHz. The frequency response for the old Polk Audio sub was 40Hz-200Hz...
  9. DIY Subwoofers - General Discussion
    This thread is for all discussion of the Port Resonance article found on AV Sound Lab.
  10. REW Forum
    Just asking the simple and obvious to be sure I get the basic idea, while I buy everything to get started. 1 - The laptop analyzer can stand alone. With laptop, REW, Behringer, RS meter, and soundcard I can test room acoustics (so I can adjust speaker position and room panels before setting the...
  11. Movies | TV Shows | Hollywood
    As I am always learning more and more about the differences between the audio bitrates on HD DVDs and Blue ray I was directed to this Information. After reading it I can now understand why HD DVD may very well come out on top during this war. Dolby Digital (AC-3) and Dolby Digital Plus (E-AC-3)...
  12. DIY Subwoofers - General Discussion
    I must be having a major brain fart today since I feel like I missing something regarding port length with and without flares. I've read the WinISD help and Collo's website already. If you are supposed to add 1/2 of the flare radius to the straight tube length to get the effective port length...
  13. REW Forum
    For both Graphs the SPL was attached to the FastTrack Pro and the FastTrack Pro was connected to the receiver. The sub out on the receiver is going in to the 1124P and the 1124P is going to the sub. Ok, every time I created a set of filters, I all the sudden got a very big dip in my graphs at...
  14. Video Calibration
    Introduction When we shop for a projector, one of the specifications that we really want to be aware of is the Contrast Ratio (CR). In general, we know that it is the relationship between the black and white levels that a projector can show. Well, it is a little more complicated than that, and...
  15. REW Forum
    I have spent most of the weekend trying to get the best reading for my room as far as fq. is concerned. I have moved the sub. and tried lowering its volume. What I do not understand is with the 3 graphs I will show, the sub only graph is flatter, and when the fronts are added, they increase...
  16. REW Forum
    Hi, I am a real newbie at this so please bear with me. What I need is some help understanding the graph I am posting here. Just what does this show to you experts. Is this a poor result? I should explain what I am doing... I want to see how the monitors I have on my PC are performing in a...
  17. REW Forum
    Hi, I am a real newbie at this so please bear with me. What I need is some help understanding the graph I am posting here. Just what does this show to you experts. Is this a poor result? I should explain what I am doing... I want to see how the monitors I have on my PC are performing in a...
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