- Digital signal processing
One of the best ways to get superior sound in your car is to add an amplifier to pump up the power, along with a digital signal processor to fine-tune the sound quality. Infinity’s incredibly small DSP4425 four-channel amplifier and processor will do both, providing four channels of 25 watts RMS (more than twice the power of a typical factory radio) while sculpting the sound with powerful tuning software using your Windows PC.
- Connecting to the whole system
Infinity designed the DSP4425 to take the signals meant for your vehicle’s front and rear speakers, process those signals to create four finely-tuned and powered outputs, and then send them on to your speakers. You can also use this DSP/amp to power front tweeters and midrange drivers, if you’re building a front-stage-only sound system.
- Bass expansion
The DSP4425 features a pair of full-range preamp outputs, channels 5 and 6, that can be used to send signals to a subwoofer amp’s inputs. An optional remote control works with these channels serving as a bass level controller.
- Tuning
Every powered channel features 31-band EQ, switchable from parametric to graphic; completely variable high-, low-, and band-pass filters with selectable slopes; time delay, up to 12ms in 0.2ms increments; 0/180° phase adjustment; plus a lot more. You can assign each input to an output, as well as sum different input signals in order to create a full-range signal to be processed.
Infinity DSP4425
DSP4425 adjustment software graphic interface
Product highlights:
- 4-channel car amplifier with digital signal processing
- 25 watts RMS x 4 at 4 ohms
- 35 watts RMS x 4 at 2 ohms
- Class AB amp technology
- DSP and EQ tuning tool adjustments made via USB connection to a Windows PC
- save up to 10 presets
- USB cable included
- inputs: 4 assignable preamp and speaker-level
- outputs: 4 processed speaker-level, 2 full-range preamp (4-volt)
Adjustment Details:
- 31-band EQ (selectable parametric or graphic)
- adjustable high-, low-, and band-pass filters (20-20,000 Hz)
- selectable filter slopes (6, 12, 18, 24, 30, 36, 42, 48 dB/octave)
- adjustable delay: 0 to 12ms in 0.2ms increments
- selectable phase: 0° or 180°
- programming done by your Windows-run PC
Other Features:
- optional wired remote (for ch 5/6) available (#108RBC)
- fuse rating: 15A x 1
- wiring and hardware not included with amplifier
- 8-gauge power and ground leads recommended
- dimensions: 5-11/16″W x 2″H x 7-15/16″D
- warranty: 1 year
- 60-day returns
- MFR # INFDSP4425AM
What’s in the box:
Infinity DSP4425 owner’s manual
4-Channel DSP amplifier
8″ Power/Speaker/Remote harness
Two 15-amp ATO fuses (1 installed/1 spare)
70″ USB Cable (type-A both ends)
Four 5/8″ Screws
4 Flat-washers
4 Split lock-washers
Four 5″ Zip ties
Owner’s manual (English/ French/ Spanish/ Chinese)
