D AMORE E350.2 E Series Mobile Audio Amplifier
About the design
The E series amplifiers are based on the latest Texas Instruments class D controllers. This amplifier topology is the foundation for some of the world’s most efficient amplifiers. We took the typical Class D design, improved on it and made it suitable for car audio in all vehicles with sensitive electronics by using very high quality inductors and additional EMI filters for improved distortion, frequency response, clipping characteristics and reduced EMI compared to many (most) competitors Class D offerings. The power supply and the output stages use multiple N-Ch MOSFETs for efficiency and robustness Heat from the MOSFETs is transferred to an extruded aluminum heatsink via mechanical mounting. Extruded aluminum is superior to cast aluminum as a heatsink as it has higher density than a cast heatsink, which tend to be riddled with air pockets within the casting.
Mount it
When an amplifier is mounted in a car that is going 50 MPH and crashes the amplifier might continue traveling at 50 MPH and cause destruction and/or bodily injury if proper mounting techniques are not used. Use #6 or M3 screws in each of the mounting tabs to mount this amplifier to something very secure in the vehicle. The bottom plate is also electrically grounded, so it is best to mount it to something NOT grounded to avoid ground loops.
Power Requirements
Fuses
The amplifiers are shipped with the following fuse sizes. Always replace with the same rating. We have already oversized them for maximum performance. If fuse blows amplifier has serious fault or shorted speaker wire, or wrong impedance speakers connected.
| Model | Fuse arrangement |
| E350.2 | 40A x 1 |
| E400.4 | 25A x 2 (internal) |
| E660.5 | 35A x 2 (internal) |
| E700.4 | |
| E750.1 | 40A x 2 |
| E1000.1 | 40A x 3 |
| E1500.1 | Must Use External 150A |
DC Current Requirements
| Model | 4Ω sine to clip | 2Ω sine to clip | 1Ω sine to clip |
| E350.2 | 16A | 28A | N/A |
| E400.4 | 21A | 34A | N/A |
| E660.5 | 30A | 50A | N/A |
| E700.4 | 33A | 57A | N/A |
| E750.1 | 25A | 42A | 68A |
| E1000.1 | 31A | 57A | 90A |
| E1500.1 | 45A | 80A | 140A |
Fault conditions and symptoms
The E-Series amplifiers have LEDs on the side panel to indicate the status of the amplifier. Normal Condtion – Green LED under on Heatsink too hot – Red LED on. Amplifier will resume normal operation when Heatsink cools down Short Circuit on speaker wire or speaker impedance too low – Red LED may blink or not, audio is muted and automatically resets after several seconds. External Fuse blown or no power on B+, Green LED off, no sound.
Specifications
| E350.2 | E400.4 | |
| Continuous Sine Power | ||
| 4Ω | 100 x 2 | 60 x 4 |
| 2Ω | 175 x 2 | 100 x 4 |
| 1Ω | ———- | ———- |
| Continuous Sine Bridged | ||
| 4Ω | 350 x 1 | 200 x 2 |
| 2Ω | ———- | ———- |
| 1Ω | ———- | ———- |
| Crossovers 12dB/octave | LP/HP/OFF | LP/HP/OFF |
| Frequency Response | ||
| 20 – 20,000 Hz 4Ω | +/- 1.0dB | +/- 1.0dB |
| 20 – 20,000 Hz 2Ω | +/- 2.0dB | +/- 2.0dB |
| S/N Ratio A-wt Ref: | >102dB | >102dB |
| THD ½ power 1kHz, 4Ω | <0.05% | <0.05% |
| Remote Level Control | No | No |
| Idle Current | < 2A | < 2A |
| Efficiency at CTA power 4Ω | > 90% | > 90% |
| Input Impedance | 10kΩ | 10kΩ |
| Dims, inches including feet | 9.3 x 5.3 x 1.9 | 9.3 x 5.3 x 1.9 |
| Dims, mm including feet | 235 x 135 x 48 | 235 x 135 x 48 |
| Weight, lbs. / kg | 3.6 / 1.6 | 3.8 / 1.7 |
| Power Connector | 4 AWG | 4 AWG |
| Speaker Connectors | 12 AWG | 12 AWG |
| E660.5 | E700.4 | |
| Continuous Sine Power | ||
| 4Ω | 55 x 4 + 190 x 1 | 100 x4 |
| 2Ω | 90 x 4 + 300 x 1 | 175 x 4 |
| 1Ω | ———- | ———- |
| Continuous Sine Bridged | ||
| 4Ω high frequency channels 2Ω sub channel | 180 x 2 + 300 x 1 | 350 X 2 |
| 2Ω | ———- | ———- |
| 1Ω | ———- | ———- |
| Crossovers 12dB/octave | BP/LP/HP/OFF | LP/HP/OFF |
| Frequency Response | ||
| 20 – 20,000 Hz 4Ω | +/- 1.0dB | +/- 1.0dB |
| 20 – 20,000 Hz 2Ω | +/- 2.0dB | +/- 2.0dB |
| S/N Ratio A-wt Ref: | >102dB | >102dB |
| THD ½ power 1kHz, 4Ω | <0.05% | <0.05% |
| Remote Level Control | Yes | Yes |
| Idle Current | < 2A | < 2A |
| Efficiency at CTA power 4Ω | > 90% | > 90% |
| Input Impedance | 10kΩ | 10kΩ |
| Dims, inches including feet | 13.7 x 5.3 x 1.9 | 16 x 5.3 x 1.9 |
| Dims, mm including feet | 347 x 135 x 48 | 407 x 135 x 48 |
| Weight, lbs. / kg | 5.7 / 2.6 | 7.1 / 3.2 |
| Power Connector | 4 AWG | 4 AWG |
| Speaker Connectors | 12 AWG | 12 AWG |
| E750.1 | E1000.1 | E1500.1 | |
| Continuous Sine Power | |||
| 4Ω | 300 x 1 | 400 x 1 | 525 x 1 |
| 2Ω | 500 x 1 | 700 x 1 | 950 x 1 |
| 1Ω | 750 x 1 | 1000 x 1 | 1500 x 1 |
| Low Pass Filter 4th order | 50 -250 Hz | 50 -250 Hz | 50 -250 Hz |
| Infrasonic Filter 2nd order | 10 – 50 Hz | 10 – 50 Hz | 10 – 50 Hz |
| Frequency Response | |||
| 10 – 250 Hz 4Ω | |||
| 10 – 250 Hz 2Ω | |||
| S/N Ratio A-wt Ref: | >100dB | >100dB | >100dB |
| THD ½ power 50Hz, 4Ω | <0.05% | <0.05% | <0.05% |
| Remote Level Control | Yes | Yes | Yes |
| Idle Current | < 2A | < 2A | < 2A |
| Efficiency at CTA power 4Ω | > 90% | > 90% | > 90% |
| Input Impedance | 10kΩ | 10kΩ | 10kΩ |
| Dims, inches including feet | 12.1 x 5.3 x 1.9 | 12.9 x 5.3 x 1.9 | 16 x 5.3 x 1.9 |
| Dims, mm including feet | 307 x 135 x 48 | 327 x 135 x 48 | 407 x 135 x 48 |
| Weight, lbs. / kg | 5.1 / 2.3 | 5.5 / 2.5 | 7.3 / 3.3 |
| Power Connector | 4 AWG | 4 AWG | 2 AWG |
| Speaker Connectors | 12 AWG | 12 AWG | 12 AWG |
Limited Warranty
D’Amore Engineering warrants this product to be free of defects in materials and workmanship for a period of one year. This warranty is not transferrable and applies only to the original purchaser from an authorized D’Amore Engineering dealer. Should service be necessary under this warranty for any reason due to manufacturing defect or malfunction, D’Amore Engineering will (at its discretion) repair or replace the defective product with new or remanufactured product at no charge. Damage caused by the following is not covered under warranty: accident, misuse, abuse, product modification or neglect, unauthorized repair attempts, misrepresentations by the seller. This warranty does not cover incidental or consequential damages. Cosmetic damage due to accident or normal wear and tear is not covered under warranty. Warranty is void if the product’s serial number has been removed or defaced. Any applicable implied warranties are limited in duration to the period of one year beginning with the date of the original purchase. No warranties shall apply to this product thereafter. Some states do not allow limitations on implied warranties; therefore, these exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
If you need service:
All warranty returns should be sent to D’Amore Engineering accompanied by proof of purchase (a copy of the original sales receipt). Warranty expiration on products returned without proof of purchase will be determined from the manufacturing date code. Non-defective items received will be returned COD. Customer is responsible for shipping charges and insurance in sending the product to D’Amore Engineering. Shipping damage on returns is not covered under warranty.
To obtain service worldwide please e-mail D’Amore Engineering at [email protected]
E Series Amplifiers Owner’s Manual Rev. 3 D’Amore Engineering Camarillo, CA 93012 2021
