Unfortunately for me, the amplifiers crossover section covers a HUGE swath of frequencies(2.5khz-10khz using the high-range setting) with one itty-bitty little dial for each bank of channels. The tweeters are crossed over using the HPF on the amplifier. The mids are band-passed using the HPF on the deck, and the LPF on the amplifier. I am using a combination of my my XR-4S and X-994 to run my component speakers active. I would probably have never turned the gain up this far had it not been for the DD-1, thus never truly getting out of this amp all that it has to offer in power.įirst, a little background on the situation. Honestly, it just looks like I need more capable mids if I want to crossover at 60-70 hz up front. I have lost a bit of the low end I was getting out of the mids with lower gain/lower crossover, but the fullness of the sound at any volume makes up for it, in my opinion. At the low and mid volume range the front stage now sounds well matched to the sub stage, where as previously I had to turn it up rather far to get it to match the lows. I did have to raise the HPF a little bit(to 90hz) after tuning, but with the extra volume its not all that noticable. When turning up the amp before, my speakers distorted, so it never reached its potential output. I had previously set the gains by ear with the decks front outputs HPF crossed at The gains on the amp went up substantially after tuning. I then set the gains on my four channel, a Kenwood Excelon XR-4S, using the track. However, since the subwoofer gain on the deck had been moved down, I think its safe to say I had it set too high. Overall, the position of the dial wasn't changed much. I used the 40hz track to set the gain on my sub amp, a MB Quart ONX.2000D, first.
I used the maximum sound quality tracks, which are 1khz and 40 hz -5db/octave. I had set them by ear, rather conservatively I might add, prior. I then set my amps gains following the directions provided.
This was all very easy, and I was now all set to match the amp gains to it. I played the 40hz tone at volume level 34/35(since that was the max volume that my other channels could play at, without distortion) and adjusted the subwoofer channel gain until zero distortion was detected. I know that the sub level on this particular deck is an attenuation level control, and not bass boost, so I was not expecting this. Distortion was detected at volume level 29/35. I then tested the subwoofer channels(obviously only the 40hz track was used for this), with the Sub level set at +15dB. With the 40hz tone, the instrument detected distortion at 34/35.
#Smd clipping detector tool full
When I played each track on each of my front, rear, and subwoofer outputs, I discovered the following:Īll four front and rear channels could be at full volume (35/35) at 1khz without any distortion. I used the 1khz and 40hz tracks on the provided test disc. Even the noobiest of noobs would be able to use these tools if they follow the directions properly.įirst, as per the directions, I tested my head unit, a Kenwood Excelon x-994. The directions that accompany both units are well written and clear. This makes using many brands of RCA's impossible to plug directly into it(when setting/testing head units and processors), requiring an adapter. My only dislike of the physical aspects are that the RCA input is recessed into the body of the unit. They aren't heavy, which makes me wonder why they couldn't be made slightly smaller. The silicone gloves makes holding onto the units easy and comfortable. This weekend I was able to to use the SMD Distortion Detector and Crossover Calibrator to set up my system.
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