TMP-8 8 CHANNEL TRANSFORMER MICROPHONE PREAMPLIFIER USER MANUAL SAFETY INSTRUCTIONS Caution To reduce the danger of electric shock, please do not remove the top or bottom cover of this unit. Refer servicing of the item to qualified personnel. Do not expose this product to water. JLM AUDIO PO BOX 424 RED HILL QLD 4059 BRISBANE AUSTRALIA PHONE + 61 7 38912244 MOBILE + 61 (0)419 625 663 WWW.JLMAUDIO.COM CAPTURING AUDIO WITHOUT INJURY
JLM TMP8 OVERVIEW Congratulations on purchasing this quality product from JLM AUDIO. The JLM TMP8 is a state of the art 8-channel mic-pre. It s cased in machine punched Stainless Steel and is 19 rack width and 1 Unit (44mm) high. One feature that makes the JLM TMP8 so unique is its extremely shallow depth, measuring a mere 75mm of rack depth or 95mm deep including the knobs featured on the front panel. The JLM TMP8 produces a uniquely transparent sound that is minimalist and it functions with an extreme signal to noise ratio. The JLM TMP8 has become recognised for its tight fat low end and silky top end which enhances its ability to represent a variety of sources from instruments to voice capturing the full body and texture of what is being recorded. With sophisticated aesthetic qualities, the highest of production standards and a superior design, the JLM TMP8 is the perfect addition to any professional studio set-up. JLM TMP8 FEATURES : Transformer input Mic Pre with solid state output : Eight Custom made high performance transformer inputs. : Two 1Meg High Impedance Unbalanced DI Inputs on Channel 1 & 2 for Electric Guitars and Peizo Pickup Bugs. : Six 1k Low Impedance Balanced DI Inputs on Channel 3 to 8 for Dynamic Microphones, Keyboards and Synths : 20db pad switch. : Phase reverse switch. : 48v phantom power switch and led. : 41 click positions gain pot control from 20 to 60db. : Soft limiters that can be set specifically so a/d converters don't clip. : Gold Neutrik XLR inputs and outputs. : External 48vdc 110v/240v Switchmode power Supply. : Casing is Stainless Steel, one rack unit high less than 95mm deep including front panel knobs. POWER The JLM TMP8 can be powered by most 48v 500mA Regulated power supplies. We have included a 110v/240v Mains Voltage 48Vdc Switch Mode Power Supply (SMPS) with the TMP8. The Mains voltage range for your country needs to be selected by a switch in the side of the SMPS unit before plugging the unit in. Then the SMPS is plugged into the 5pin gold XLR connector located on left hand side of the back panel (9), it can then be connected to the mains power by a IEC standard power cord with your countries power plug on the end and switched on by using the power switch located on the side of the SMPS. Turn on the power switch on the right hand side of the JLM TMP8 and a green LED will light up underneath the power switch on the front of the unit. Note 1 The SMPS if on when the TMP8 is switched off will sometimes make a soft hissing noise which will go way when the TMP8 is switched on. This is normal for the SMPS.
FRONT PANEL There are three push on/off switches, one socket and one dial per channel of the JLM TMP8. There functions are: (1) DI Jack this socket on channels 1 and 2 is a 1Meg high impedance unbalanced Fet buffered DI input for Guitars and Piezo Bugs. This jack on channels 3 to 8 is a 1k low Impedance balanced DI input for Dynamic Microphones, Keyboards and Synths. Inserting into any of the eight DI sockets automatically disconnects the rear XLR input for that channel until the jack is removed. All DI inputs still have the audio transformer in their audio path and Phase and Pad functions work on these inputs as well. (2) 48V Switch this switch facilitates the activation of phantom power for Condenser Microphones and active DIs, providing a regulated and smooth power source to the rear XLR input of each channel. A red LED (2A) at the top left will light up when phantom power is activated. (3) Pad Switch the Pad Switch inserts a 20dB pad in front of the input transformer. This will allows for microphones running up to line level to function when inserted without any clipping or transformer overload occurring. (4) Phase Reverse Switch the phase switch reverses the phase of the input signal by 180, effectively swapping pin 2 and pin 3 of the XLR input to correct bass cancellation between out of phase microphone placement and different microphone types. (5) Gain Control There are 41 click positions on the Gain Control Pot from 20dB to 60dB. The gain dial can be used to adjust the gain of the microphone preamplifier. The dial is very responsive and allows for detailed incremental adjustment of the gain.
(6) Soft Limit Function The Soft Limiters are effective over all eight channels and can be gauged by watching the blue LED. This light gives an indication to the level at which the Soft Limit is operating the light will become brighter as the Soft Limiter is driven harder. (The Blue Soft Limit LED comes standard with the clip indicator set to +29dBM to show that the mic-pre is about to clip as it runs out of head room at +30dBM. The Blue Soft limit light, when set as a clip indicator will rarely light under normal circumstances.) (7) The TMP8 comes with a White Chinagraph wax Pencil for writing on the scratch pads which are the black rectangles numbered 1 to 8 on the front panel. Only use chinagraph pencils to write on the pads and a slightly damp cloth to remove any writing afterwards. BACK PANEL Like the front panel, the rear panel of the TMP8 is laid out with ease of access and functionality in mind. (8) The soft limiter setting 3.5mm socket is locked below the input and output of each channel. If you have asked for the limiters to be set to match you re A/D then there will be a pack of 8 x 3.5mm Jacks supplied that can be plugged in to set the limiters to the right level. (9) Power Connector The rear panel also features the power 5pin XLR (9), with the switch for turning power on/off being located on the front panel directly in front of the power input. (10) Line Outputs There are 8 gold 3 pin male XLR connectors on the rear panel directly behind there associated front panel controls. (11) Mic/Line inputs There are 8 gold 3 pin female XLR connectors on the rear panel directly behind there associated front panel controls.
SPECIFICATIONS Maximum output into 10k load = +30dBM (limiter disabled) Maximum output into 600 load = +24dBM (limiter disabled) Maximum input pad out = 0dBM Maximum input pad in = 20dBM Minimum Gain with Pad in = 0dB Maximum Gain with Pad in = 40dB Minimum Gain with Pad out = 20dB Maximum Gain with Pad out = 60dB Input Impedance 600 ohm Output Impedance 600 ohm Frequency response is Flat with -1dB roll offs at 10Hz & 175kHz and -3dB roll offs at 3Hz & 225kHz. THD < 0.005% JLM AUDIO CAPTURING AUDIO WITHOUT INJURY WWW.JLMAUDIO.COM