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Free Downloads!
Everyone loves free downloads so I'm going to dump all my free Brendan Macs Guitar Gear creations here! Get em while they're hot!
If you find these IR's great, buy me a coffee using the QR Code.  
It would be appreciated but you're not obliged to at all
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Guitar Cabinet Impulse Response Files
Last Updated 3rd August 2024
Click here to download → Celestion G12-T75 IR (recorded with Sennheiser E609) - Version 1.0
IR Specifications
WAV Files
16bit - 44.1k
Microphone
Sennheiser E609
Speaker
Celestion G12-T75 (well worn in, over 20yrs old)
Amp
Marshall DSL100H - Via the power amp section (via return loop)
Files Contain 2 types, Speaker Cap CENTRE and speaker CAP EDGE at different distances from the speaker.  These IR's are free for you to use at your own discretion! Enjoy!  Ill upload more versions later if I could be bothered.   I would like to IR my WSG ET-65 Speakers as well from the same cabinet.  Maybe even IR two speakers blended, that'd be interesting!
Peavey Basic 60 Bass Speaker Impulse Response Files
Last Updated 25th May 2025
Click here to download → Peavey Basic 60 Cabinet Impulse Response Captures
IR Specifications
WAV Files
24bit - 44.1k
Microphone
Sennheiser E609
Speaker
Either Peavey Scorpion speaker or a Peavey Black Widow speaker (the internet seems a bit fuzzy on what the actual speaker is but it sounds good to me!)
Amp
Peavey Basic 60- via the power amp section (via return loop)
The files ive modelled are done with white noise samples of about 100ms in length.  I used my awesome Sennheiser E609 microphone in three main central positions, Far (60cm), Medium (30cm) and Close (as close as I could get it, about 3 cms from the cloth).  Also did close edge micing and 45 degree outward facing from the cone.  Each impulse response contains a sample using white noise (I had pink noise samples in as well but there was some ringing sound in them but not the white samples).  BUT they are FREE and you can do what ever you like with them, just credit me where possible please.
Fender FM-65R Speaker Impulse Response Files
Last Updated 24th August 2026
Click here to download → Fender FM65R Speaker Cabinet Impulse Response Captures
IR Specifications
WAV Files
16bit - 44.1k
Microphone
Shure SM-57 (Brand New)
Speaker
Special Fender designed speaker driver. Typically rated around 75 watts at 8 ohms impedance for the 65W output stage.
Amp
FM65R Amplifier via the Power IN jack (basically the return loop)
This package contains impulse responses for my Fender FM65R guitar amplifier. Its a loud, punchy amp with a great 12 inch speaker.  I use this amp for demo's, song writing and jamming with mates at parties.  It has a wonderful sound and I think you'd like it too.  Especially if you're looking for a combo tone.  Each filename is descriptive of what was done actually done to record the impulse response.  As usual, these are free to download and use, just credit me where possible please.
Flush IR's are just the mic flush against the grill.  The distance ones are cap centre only and this pack also contains rear speaker impulse responses as its an open backed cab.  The furthest distance IR is 30cm, dust cap centre.