The Hartke LH Series Combo Bass Amplifiers feature the following:
This manual covers the two Hartke LH Series combo bass amplifiers, the models LH5210 and LH5410, both of which use the Hartke LH500 amplifier head with a 12AX7 tube preamp. The LH5210 delivers 350 watts to its internal 8-ohm speaker system, or 500 watts when an extension cabinet is connected along with the internal speaker, while the LH5410 produces a full 500 watts into its internal 4-ohm, 4x10 speaker system.
The manual describes the front and rear panel controls, including separate passive and active inputs, volume, BRITE switch, BASS/MID/TREBLE tone stack equalizer, limiter, balanced XLR direct out, effects send and return jacks, and the LH5210's extension speaker output. It also walks through setup and speaker protection, and describes the Hydrive hybrid cone speakers and birch plywood cabinet construction.
| LH5210 output power (internal) | 350 watts into 8-ohm internal speaker system |
|---|---|
| LH5210 output power (with extension cabinet) | 500 watts |
| LH5410 output power | 500 watts into 4-ohm internal speaker system |
| Preamp | 12AX7 tube high-voltage preamp circuit |
| Passive input | 1/4-inch unbalanced, 1 Meg Ohm impedance, 77 mV sensitivity |
| Active input | 1/4-inch unbalanced, 100 k Ohm impedance, 250 mV sensitivity |
| Direct Out | Electronically balanced XLR, 100 ohm, approx. -30 to -20 dB |
| LH5210 speaker system | Two 10-inch 250-watt Hydrive drivers plus 1-inch titanium compression driver, sealed enclosure |
| LH5410 speaker system | Four 10-inch 250-watt Hydrive drivers plus 1-inch titanium compression driver, sealed enclosure |
| Speaker output (LH5210 only) | 1/4-inch jack for 8 or 16 ohm bass cabinets |
| Effects send level | Approx. 0 dB to +4 dB, post-EQ and post-Limiter |
| Fuses | 10 amp (115 VAC) / 5 amp (230 VAC), slow blow |
It delivers 350 watts to its internal 8-ohm speaker system, or 500 watts when an 8-ohm extension cabinet is connected along with the internal speaker.
The LH5410 produces a full 500 watts delivered to its internal 4-ohm speaker system.
Connect a passive bass to the PASSIVE input and a bass with active circuitry to the ACTIVE input on the front panel.
Make sure the rear panel AC voltage selection switch is set correctly for your country and that the fuse rating is correctly set.